Since 1985 ELTRA is an Italian Company present in the market of encoders, proximity sensors and linear transducers both nationally and in foreign Countries.
In those years the company constantly grew extending its product range (currently more than 15.000 articles and 3.000 customers) maintaining flexibility and the capability to manufacture products designed according to Customer specifications. This is possible thanks to continuous investments designated to Research and Development and to the high know how of our employees.
ELTRA manufactures a wide range of products (incremental, absolute, explosionproof, rope and magnetic encoders; linear and optical incremental systems working also of field busses, several accessories, etc.) and makes the ability to manufacture custom products one of the main strengths Thanks to our extended Sales Network and the establishment of new facilities (China, Slovak Republic and USA) we are able to quickly satisfy different Customer needs maintaining the highest level of reliability and a prompt after-sales service.
All our products are tested according to the severe ISO 9001:2000 quality standards. We also are UL/CSA certified and many of our products satisfy the ATEX standards.
| Incremental Encoders |
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Encoders are designed in order to control the position and the angular speed of moving mechanical axels.
Main application field are: wood-working machinery, textile machines, CNC machinery, and so forth.
ELTRA brand encoders offers a complete range of encoders with resolution up to 10.000 pulses per turn (ppr) with a wide flange choice andseveral electronic outputs.
Shaft, blind hollow shaft and through hollow shaft up to a diameter of 75 mm (2.95″) are available. |
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ø 30 mm [EL30 E/H/I]
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Miniaturized Ø30 encoder series. Used when a minimal size is required even providing excellent performances.
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Up to 1024 ppr with Zero.
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Several output types available.
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Up to 24 Vdc input voltage.
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Up to 100 kHz frequency response
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Output cable. Cable connector available on request.
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Several flanges available
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Up to 3.000 rpm rotation speed
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Up to IP54 sealing
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ø 38 mm [EH38 A/B/D]
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Miniaturized encoder series for general applications.
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Up to 1024 ppr.
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Several output types available.
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Up to 24 Vdc input voltage.
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Up to 100 kHz frequency response
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Output cable. Cable connector available on request.
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Several flanges available
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Up to 3000 rpm speed rotation
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Up to IP54 sealing
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ø 42 mm [EL40 A/B/C/E/H/I]
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Miniaturized Ø42 encoder series for general applications.
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Up to 2000 ppr with zero.
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Several output types available.
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Up to 28 Vdc input voltage.
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Up to 100 kHz frequency response.
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Output cable. Cable connector available on request.
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Several flanges available.
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Up to 6000 rpm speed rotation.
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Up to IP65 sealing.
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ø 58 mm [EH – EL58 B/C/H/T]
Standard ø 58 encoder series for industrial applications with high mechanical resistance requirements. These encoders are designed to support high radial and axial shaft load andthey can be mounted by means of flanges or servo-fasteners.
- Up to 10000 ppr with zero signal for EL series, up to 1024 ppr for EH series
- Several output types available
- Up to 28 V DC power supply for EL series and up to 24 V DC for EH series
- Up to 300 kHz output frequency for EL series and up to 100 kHz for EH series
- Cable or connector output
- Several flanges available
- Up to 6000 RPM rotation speed
- Up to IP66 sealing
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ø 63 mm [EH – EL63 A/D/E]
Standard ø 63 encoder series for industrial applications with high mechanical resistance requirements. These encoders are designed to support high radial and axial shaft load andthey can be mounted by means of flanges or servo-fasteners.
- Up to 10000 ppr with zero signal for EL series, up to 1024 ppr for EH series
- Several output types available
- Up to 28 V DC power supply for EL series and up to 24 V DC for EH series
- Up to 300 kHz output frequency for EL series and up to 100 kHz for EH series
- Cable or connector output
- Several flanges available
- Up to 6000 RPM rotation speed
- Up to IP66 sealing
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ø 63 mm [EL 63 AX/DX]
Thanks to the stainless steel enclosure, this encoder is suitable for food and beverage machinery, cranes and winches for ships, offshore applications, washing systems and for all those environments where high corrosion resistance is required.
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ø 63 mm [EL 63 M]
Standard ø 63 encoder series for industrial applications with high mechanical resistance requirements. These encoders are designed to support high radial and axial shaft load and they can be mounted by means of flanges or servo-fasteners.
- Up to 2500 ppr with zero.
- Several output types available.
- Up to 28 V DC power supply.
- Up to 150 kHz output frequency.
- Cable or connector output.
- Up to 6000 RPM rotation speed.
- Up to IP 54 sealing.
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ø 90/115 mm [EH – EL90 A -115 A/R ]
Encoder series for critical environments with high mechanical resistance requirements. The 90 model can be mounted with flanges or servo-fasteners; the 115 model has a tachometer generator type REO-444 compatible plug.
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Up to 10000 ppr with zero for EL series, up to 1024 ppr for EH series.
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Several output types available.
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Up to 28 Vdc input voltage for EL series and up to 24 Vdc for EH series.
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Up to 300 kHz frequency response for EL series and up to 100 kHz for EH series.
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Output cable with connector.
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Several flanges available.
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Up to 6000 rpm speed rotation.
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Up to IP66 sealing model 90A.
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| Hollow Shaft |
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ø 36 mm [EF36 K]
ø 36 encoder series recommended in feedback control systems on AC servomotors. It includes a traditional incremental encoder and the Hall effect phases.
- Interchangeable with size 15 Resolver; it allows easy and cost effective mounting.
- Easy mechanical mounting.
- Small dimensions.
- Wide range of resolutions available.
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ø 38 mm [EL38 F/G]
Miniaturized ø 38 encoder series for general applications.
- Up to 7200 ppr
- Several output types available
- Up to 28 V DC power supply
- Up to 150 kHz output frequency
- Radial cable output
- Up to 3000 RPM rotation speed
- Up to IP 65 as protection grade
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ø 42 mm [EL40 G/GR ]
Miniaturised encoder ø 42 series for general applications.
- Up to 2000 ppr with zero for EL series
- Different output types available
- Up to 28 Vdc input voltage
- Up to 100 kHz frequency response
- Output cable. Cable connector available on request
- Several flanges available
- Up to 3000 rpm speed rotation
- IP54 sealing
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ø 53 mm [EL40 M]
Small size encoder to be mounted directly on motors. The internal coupling allows radial and axial compensations. Thanks to the possibility of full rotation, the easy zero setting is one of the main features of this transducer.
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ø 46 mm [EF 40 F]
ø 40 encoder series recommended in feedback control systems on AC servomotors. It includes a traditional incremental encoder and the Hall effect phases.
- Easy mechanical mounting
- Small dimensions
- Wide resolution range available
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ø 49 mm [EL – EF 49 C/P]
Ø49 encoder series used in feedback systems on AC servomotor. They integrate a traditional incremental encoder with the optic generation of “Hall effect phases”.
Main characteristics are:
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Interchangeability with size 19 resolver representing a cost-effective solution because it is sufficient to have only one predisposition on the motor.
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Wiring simplification using the connector kit
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Contained dimensions
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Wide resolution range available
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High temperature resistance
EL series
Basic version with incremental outputs.
Several output types available.
EF series
Optic engendering of the “commutation phases” integrated to the basic version.
Signals transmission by parallel connection.
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ø 50 mm [EL50 F/G/K]
ø 50 encoder series recommended as motor feedback.
- Several ways to fix it
- Easy mechanical mounting
- Small dimensions
- Up to 5000 ppr with zero signal
- Several output types available
- Up to 150 kHz output frequency
- Up to 6000 RPM rotation speed
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ø 50 mm [EL50 FA/GA/FP/GP]
ø 50 encoder series recommended as motor feedback.
- Several ways to fix it
- Easy mechanical mounting
- Small dimensions
- Up to 5000 ppr with zero signal
- Several output types available
- Up to 150 kHz output frequency
- Up to 6000 RPM rotation speed
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ø 53 mm [EH – EL53 A/B]
Encoder series to be mounted directly on motors. Our integrated elastic coupling allows radial and axial slack compensation.
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Resolution up to 10000 ppr with zero for EL series, up to 1024 ppr for EH series.
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Different output types available.
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Up to 28 Vdc input voltage for EL series and up to 24 Vdc for EH series.
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Up to 300 kHz frequency response for EL series and up to 100 kHz for EH series.
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Output cable with connector.
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Several flanges available.
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Up to 6000 rpm speed rotation.
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ø 58 mm [EL58 PFA/PFP/PGA/PGP]
Through hollow shaft encoders series designed for industrial application and medium / big size motors with a bore size up to 20 mm diameter. The insulated bearing option prevents encoder damages that result from induced currents through the shaft.
- Insulated through hollow shaft option
- Compact design
- Resolution up to 4096 ppr
- Line driver, push-pull or NPN electronic interfaces
- Up to IP 66
- 6000 rpm max (IP 54)
- Cable or connector output
- Working temperature range: -20° … 70 °
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ø 58-63 mm [EH – EL58 / 63]
Hollow shaft encoder series for industrial applications with high mechanical resistance requirements. These encoders are designed to withstand high radial and axial shaft loads.
- Resolution up to 10000 ppr with zero signal for EL series,up to 1024 ppr for EH series
- Several output types available
- Up to 28 V DC power supply for EL series and up to 24 V DC for EH series
- Up to 300 kHz output frequency for EL series and up to 100 kHz for EH series
- Cable or connector output
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ø 63.5 mm [EL63 GBM/FBM]
Encoders for industrial environments with hollow shaft, aluminum lid and insulated bearings, with excellent mechanical strength and the possibility of high radial and axial load.
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ø 72 mm [EH – EL 72A/B]
Standard encoder series for industrial environments with high mechanical resistance requirements. Those encoders are designed to face high radial and axial shaft load and they can be mounted with flanges or servo-fasteners. Specifically designed for direct mounting on motors or tachometer generators. Our integrated elastic couplings allows radial and axial slack compensation.
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Several output types available.
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Up to 28 Vdc input voltage for EL series and up to 24 Vdc for EH series.
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Up to 300 kHz frequency response for EL series and up to 100 kHz for EH series
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Output cable with connector
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Several flanges available
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Up to 6000 rpm speed rotation
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Up to IP66 sealing
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ø 80 mm [EH – EF80 C/P/K]
Ø80 encoder series used to feedback systems on AC servomotor. They integrate a traditional incremental encoder and the optic generation of “Hall effect phases”. Main characteristics are:
EH series
Basic version with incremental outputs.
Several output types available.
EF series
Optic engendering of the “ commutation phases” integrated to the basic version. Signals transmission by parallel connection.
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ø 80 mm [EH80 PFA/PFP]
Sturdy, encoder suitable for heavy duty applications.
- Compact size
- Bidirectional signal with zero
- Up to 1440 ppr
- Line driver output
- 3000 rpm max
- Working temperature: -20° … +85 °C
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ø 88 mm [EH88 PE/PET]
Cost effective series for asynchronous motors.
- Suitable for elevators and stage machinery
- Sturdy frame
- Up to ø 40 mm bore size
- Resolution up to 2500 ppr with Z reference signal
- Torque arm fixing available up to ø 30mm through hollow shaft
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ø 88 mm [EL88 P]
ø 88 mm through hollow shaft encoder designed for middle size asyncronous motors.
- Up to 38mm bore diameter
- Easy mounting
- Sturdy mechanic
- Resolution up to 2048 ppr with zero signal
- Several output electronics
- Power supply up to 28 V DC
- Responce frequency up to 105 KHz
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ø 120 mm [EL120 P]
Ø 120 encoder series with through hollow shaft used on motors.
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Up to 60 mm bore diameter
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Easy and safe fixing
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Rugged mechanics
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Up to 2048 ppr with Zero
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Several output types available
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Up to 28 Vdc input voltage
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Up to 100 kHz frequency response
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Up to 3000 rpm speed rotation
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Up to IP54 sealing
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ø 22 mm [EMI22 A/AY]
EMI series encoders are suitable for several application fields like electric motors marine industry, iron and steel industry, textile machines, woodworking, paper-working, glass working, marble-working machinery and, more generally, automation and process control fields.
- Compact dimensions
- Absence of physical contact between encoder and motor shaft
- High temperature resistant
- High resolution and precision
- High protection rating
- High operating speed
- Excellent mechanical sturdiness
- Very easy mounting
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ø 38 mm [EMI38 F/G]
Thanks to the magnetic technology, the EMI 38 series is suitable for harsh environment applications such as marble and glass working machines, washing systems and generally for industrial automation.
- Up to 2048 ppr
- Several output types available
- Up to 100°C working temperature
- Radial cable output
- Up to IP 66 as protection grade
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ø 42 mm [EMI40 A]
Thanks to the magnetic technology, the EMI 40 series is suitable for harsh environment applications such as marble and glass working machines, washing systems and generally for industrial automation.
- Up to 2048 ppr
- Several output types available
- Up to 100°C working temperature
- Axial or radial cable output
- Up to IP 66 as protection grade
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ø 55 mm [EMI55 A/AY]
EMI series encoders are suitable for several application fields like electric motors marine industry, iron and steel industry, textile machines, woodworking, paper-working, glass working, marble-working machinery and, more generally, automation and process control fields.
- Compact dimensions
- Absence of physical contact between encoder and motor shaft
- High temperature resistant
- High resolution and precision
- High protection rating
- High operating speed
- Excellent mechanical sturdiness
- Very easy mounting
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ø 58 mm [EMI58 RY]
Thanks to the magnetic technology , the EMI 58 series is suitable for harsh environment applications such as marble and glass working machines, washing systems, metal working machines and all the applications where high temperature resistance is required.
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ø 63 mm [EMI63 A/D]
Thanks to the magnetic technology , the EMI 63 series is suitable for harsh environment applications such as marble and glass working machines, washing systems, metal working machines and all the applications where high temperature resistance is required.
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ø 63 mm [EMI63 AX/DX]
Thanks to the stainless steel enclosure, the encoder is suitable for food and beverage machinery, cranes and winches for ships, offshore applications, washing systems and for all those environments where high corrosion resistance is required.
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Magnetic incremental encoder [ETMR]
It is a no-contact encoder with through hollow shaft up to 35 mm. The compact size (only 11 mm of axial thickness), the high IP grade and resistance to vibrations make this product an excellent solutions for heavy duty applications.
- Up to 4096 ppr
- Line driver / push pull output
- Fixing with Star-ring
- 8000 rpm max
- IP 67 protection degree
- Working temperature: -20° … +85°C
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Linear [ER A/B/C/D/E/F]
Incremental linear system.
- Working stroke up to 500 mm.
- Available with or without zero mark on left, right or central position.
- Several electronic output configurations available. Up to 24 V DC power supply.
- Cable output. Cable with connector at the end available on demand.
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Linear [ETMA 1/2]
ETMA 1
- 0,025 mm resolution
- Zero pulse every 5 mm
- IP 67 as protection grade
- Working temperature -10° … +60°C
ETMA 2
- 0,01 mm resolution
- Zero pulse every 2 mm
- IP 67 as protection grade
- Working temperature -10° … +60°C
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Magnetic tape [EBMA]
Magnetic Tape to be used with ETMA.
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| Other products |
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Explosionproof encoder [EX80 A/D/AX/DX]
Flameproof encoders for applications within explosive and hazardous areas.
- Up to 10000 ppr with zero
- Several output types available. Up to 28 V dc input voltage
- Output cable
- Several flanges available
- Up to 3000 rpm speed rotation
- Up to IP 65 sealing
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Encoder for racks [EC34]
Encoder for rack with automatic slack recovery. If compared to an incremental linear system, this type of encoder extremely simplifies linear measurements and overcomes measurement problems on long distance. Our models are sealed in a solid aluminium body and integrate a preloading system that allows automatic slack recovery between rack and pinion.
- Up to 2000 ppr with zero signal
- Several output types available
- Up to 24 V DC power supply
- Up to 300 kHz output frequency
- Cable or connector output
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Metric Wheels [RH – RM]
Metric wheel series designed for specific industrial applications where is required to measure a linear movement (i.e. continuous sheet cutting machines of wood, textiles, glass, etc.). Precise reading and high stress resistance are the main features of these encoders. The body is entirelydesigned of aluminium and mounted using an oscillating arm pivoted on the shaft. It comes with an integrated self-lubricating compact box to assure a long operation period without any maintenance. The weight of the metric wheel keeps a stable contact with the material, allowing anaccurate measurement of both length and speed. The wheel surface can be in crossed-knurl aluminium, special anti-oil oranti-sliding rubber.
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Electronic Hand Wheel [EV A/B/C]
Electronic handwheel series designed for positioning on CNC machines with manual drive.
- Resolution up to 10000 ppr with zero signal
- Several electronic output configurations available
- Up to 28 V DC power supply
- Output frequency up to 100 kHz
- Cable or connector output
- Several flanges available
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Potentiometer [EP A/B]
Encoders with potentiometric output signal. The potentiometer is fitted in a sturdy housing and it is supported by two bearings. It assures excellent lifetime, speed and high accuracy.
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Rope encoder [FE]
Rope encoder series available for lengths up to 6 m. The applied encoder could be incremental or absolute (bothavailable with SSI or PROFIBUS® interface). Perfectly suitable also for harsh environments, thanks to its high mechanical strength. It can be used in wide range of applications such as: vertical storehouses, presses, extruders, etc.
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Sin / cos encoder [ES53]
Hollow shaft encoders used for medium size servo feedback. Electronic Sin / Cos output is compatible with 1Vpp standard. Single sine and cosine track can be used to track motor poles without index search upon power up.
- Compact dimensions
- Sin-Cos resolution: 2048 sin / turn
- Operating temperature: -20° … 110 °
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Absolute Encoders
Absolute encoders are capable to provide the correct data after a power-down event without needing to be reset to the zero point.
Thanks to these specifications and the possibility to transfer data over a field bus, absolute encoders are nowadays used more frequently in various application fields.
Max resolution: higher than 8.192 information per turn (13 bits). Max number of turns: 8.192 (12 bits).
Supported output interfaces are: parallel, ICO, SSI, Profibus.
| Absolute Singleturn |
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Parallel Output (ø 42 mm) [EA40 A/B]
Reduced dimensions absolute encoder.
Main characteristics:
- Up to 256 ppr (8 bit)
- Several output types available
- Output cable
- Up to 6000 rpm
- Up to IP 66 sealing
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Parallel, SSI Output [EA58 – 63 – 90 – 115]
ABSOLUTE SINGLETURN PARALLEL ENCODER DESCRIPTION
Resolutions available up to 13 bit and 8192 ppr. Wide application range thanks to several models and different flange types. This series assures high reliability even in the most tough industrial applications. It is available with cable connector output and protection class up to IP 66. Gray and binary code output with several electronics available: NPN, NPN OPEN COLLECTOR, PNP, PNP OPEN COLLECTOR and PUSH PULL.
ABSOLUTE SINGLETURN SSI ENCODER DESCRIPTION
This series is designed to satisfy the new serial transmission philosophy of data output. A 13 bit word data is the standard output for these encoders. Meaningful bits are proportionally to the chosen encoder resolution. This type of transmission reduces wiring issues in order to maintain outstanding device performances. Only a four wire connection is needed: a pair for the position code and the other one for the clock signal. Both signals are transmitted by differential logic. In order to satisfy all dimensional requirements, a wide and complete range of mechanical combinations are available.
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PROFIBUS output [EA58 – 63 – 90 – 115]
The Eltra singleturn Profibus encoder series (Identification Number 0x0599) is complying to the Profibus DP standard as described on the European Standard EN 50170 Volume 2. Particularly, Eltra Profibus encoders are according to “PROFIBUS-Profile for Encoders, Order No. 3.062”. The Profibus DP interface maintains the same maximumresolution and characteristics (8192 ppr) of the stand-alone version and adds the plus of the Profibus DP network.
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ICO output [EA58 – 63]
The only encoder available on the market featuring an absolute output with the simplicity of the incremental one and adding an easy wiring system. Thanks to the integration of a micro-controller, it provides all the advantages of an absolute encoder transmitting the data as an incremental one (A, B) with a transmission frequency between 0 and 10 KHz. As for Parallel and SSI series, a broad selection of mechanical configuration is available in order to assure an easy mounting according to customer requirements.
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SSI Output [EA63 AX/DX]
Thanks to the stainless steel enclosure, the encoder is suitable for food and beverage machinery, cranes and winches for ships, offshore applications, washing systems and all those environments where high corrosion resistance is required. EA 63 AX / DX is available with SSI output.
- Up to 13 bit
- Up tp IP 66 sealing
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PROFIBUS output [EA63 AX/DX]
Thanks to the stainless steel enclosure, the encoder is suitable for food and beverage machinery, cranes and winches for ships, offshore applications, washing systems and all those environments where high corrosion resistance is required.
- Up to 13 bit
- Up tp IP 66 sealing
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ø 120 mm [EA120 P]
The EA 120 is an absolute encoder with through hollow shaft suitable for textile machine, elevator motors and generally all the applications where big diameter shaft is required. EA 120 P is available with SSI and ICO output.
- Up to 13 bit
- Through hollow shaft from 30 to 50.8 mm
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| Multiturn absolute |
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Parallel, SSI Output [EAM 58 – 63 – 90 – 115]
ABSOLUTE MULTITURN PARALLEL ENCODER DESCRIPTION
This series is designed for application where a very high precision is required, even also on extended linear distances. Resolutions up to 13 bits on the single turn (8192 ppr) and 12 bits as number of turns (4096 turns) are available. Sturdy mechanic parts and several flanges make this series suitable in such a wide range of applications assuring high performances even in the most tough industrial applications. This series is available with cable or connector output both with Gray or binary code. The PUSH PULL electronic is suitable for all industrial application fields.
ABSOLUTE SINGLETURN SSI ENCODER DESCRIPTION
The absolute multiturn encoder series with SSI output provides data with the same format as previously described for singleturn encoders. Considering the high data volume in multiturn encoders, the serial data transfer is an efficient solution in order to curb the number of wires and the SSI standard is a valuable one. The output data is a 25 bit word and useful bits are proportional to the resolution chosen for the encoder. This transmission standard efficiently reduces wiring issues maintaining the highest level of performances. Similary to singleturn encoders, number of wires for the transmission is 4 (2 for the data and 2 for the clock signal -both are transmitted in differential logic). A wide range of mechanical parts and flanges designed to satisfy different requirements is available.
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PROFIBUS output [EAM 58 – 63 – 90 – 115]
The Eltra multiturn Profibus encoder series (Identification Number 0x0599) is complying to the Profibus DP standard as described on the European Standard EN 50170 Volume 2. Particularly, Eltra Profibus encoders are according to “PROFIBUS-Profile for Encoders, Order No. 3.062”. The Profibus DP interface maintains the same maximumresolution and characteristics (8192 ppr and 4096 revolutions) of the stand-alone version and adds the plus of the Profibus DP network.
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PROFIBUS output [EAM 63 AX/DX]
Thanks to the stainless steel enclosure, the encoder is suitable for food and beverage machinery, cranes and winches for ships, offshore applications, washing systems and all those environments where high corrosion resistance is required.
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SSI Output [EAM 63 AX/DX]
Thanks to the stainless steel enclosure, the encoder is suitable for food and beverage machinery, cranes and winches for ships, offshore applications, washing systems and all those environments where high corrosion resistance is required.EAM 63 AX / DX is available with SSI output.
- Maximum frequency 1 MHz
- Up tp IP 66 sealing
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ø 22 mm [EMA – EMS 22]
EM series encoders are suitable for several application fields like electric motors marine industry, iron and steel industry, textile machines, woodworking, paper-working, glass working, marble-working machinery and, more generally, automation and process control fields. Main characteristics:
- Compact dimensions
- Absence of physical contact between encoder and motor shaft
- High temperature resistant
- High resolution and precision
- High protection rating
- High operating speed
- Excellent mechanical sturdiness
- Very easy mounting
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ø 38 mm [EMA – EMS 38]
EMA – EMS 38 series encoders are suitable for several application like electric motors marine industry, iron and steel industry, textile machines, wood-working, paper-working, glass working, marbleworking machinery and, more generally, automation and process control fields. Main characteristics:
- Compact dimensions
- High temperature resistant
- High resolution and accuracy
- High protection rating
- High operating speed
- Excellent mechanical sturdiness
- Very easy mounting
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ø 50 mm [EMA 50 A/AY/B/BY]
Singleturn absolute magnetic encoder size 50 mm. Main characteristics:
- Up to 8192 ppr.
- Parallel and SSI electronic interface.
- Several mechanical flanges.
- Up to IP 67 protection grade.
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ø 42 mm [EMA – EMS 40]
Thanks to the magnetic technology, EMA – EMS 40 is suitable for harsh environment applications such as marble and glass working machine, metal working machine, washing system and generally for industrial automation.
EMA – EMS 40 is available with SSI and analog output.
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ø 50 mm [EMA 50 F/FY/G/GY]
Singleturn absolute magnetic encoder size 50 mm. Main characteristics:
- Up to 8192 ppr.
- Parallel and SSI electronic interface.
- Several mechanical flanges.
- Up to IP 67 protection grade.
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ø 55 mm [EMA – EMS 55]
EM series encoders are suitable for several application fields like electric motors marine industry, iron and steel industry, textile machines, woodworking, paper-working, glass working, marble-working machinery and, more generally, automation and process control fields. Main characteristics:
- Compact dimensions
- Absence of physical contact between encoder and motor shaft
- High temperature resistant
- High resolution and precision
- High protection rating
- High operating speed
- Excellent mechanical sturdiness
- Very easy mounting
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ø 63 mm [EMA – EMS 63 A/D]
Thanks to the magnetic technology, EMA – EMS 63 is suitable for harsh enviroment applications such as marble and glass working machines, washing system, metalworking, laser/flame/water-jet cutting and all the applications where high temperature resistance is required. EMA – EMS 63 is available with SSI, parallel and analog output.
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ø 63 mm [EMA – EMS 63 AX/DX]
Thanks to the magnetic technology and to the stainless steel enclosure, the EMA – EMS 63 is suitable for harsh enviroment applications such as marble and glass working machines, washing system, metalworking, laser/flame/water-jet cutting, food and beverage machinery, cranes and winches for ships, offshore applications, washing systems and those environments where high corrosion and high temperature resistance are required.
EMA – EMS 63 is available with SSI, parallel and analog output.
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ø 38 mm [EML 38 F/G]
The EML 38 is a magnetic rotary encoder with blind hollow shaft. Its sturdiness, compact size and easy mounting system make the EML 38 suitable for heavy duty applications such as marble and glass working machinery, marine and industrial applications.
- Analogue linear voltage or current output
- IP 67 protection class
- Wide temperature range (-25 … 100 °C)
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ø 50 mm [EML 50 A/AY/B/BY]
The EML 50 is a magnetic rotary encoder. Its sturdiness, compact size and easy mounting system make the EML 50 suitable for heavy duty applications such as marble and glass working machinery, marine and industrial applications.
- Analogue linear voltage or current output
- IP 67 protection class
- Wide temperature range (-25° … +85 °C)
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ø 50 mm [EML 50 F/FY/G/GY]
The EML 50 is a magnetic rotary encoder. Its sturdiness, compact size and easy mounting system make the EML 50 suitable for heavy duty applications such as marble and glass working machinery, marine and industrial applications.
- Analogue linear voltage or current output
- IP 67 protection class
- Wide temperature range (-25° … +85 °C)
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Tool change applications [EA 40 T/U]
ø 40 T / U absolute encoders are specifically designed to be directly mounted on machine tools and they are suitable for being mounted on turrets for tool change (8 or 12 positions). The timing between encoder and turret can be overwiewed by a led mounted on the enclosure. According to that it is possible to visualise the position of the first tool making easier and quicker the mounting for the operator. Main characteristics:
- Easy mechanical mounting
- Several output types available
- 8 and 12 position turn configuration
- IP 66 sealing
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Explosionproof [EAX 80 A/D/AX/DX]
Flameproof encoders for applications within explosive and hazardous areas.
- Up to 8192 ppr (13 bit)
- Several output types available. Up to 28 V dc input voltage
- Output cable
- Several flanges available
- Up to 3000 rpm speed rotation
- IP 65 as protection grade
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Explosionproof [EAMX 80 A/D/AX/DX]
Flameproof encoders for applications within explosive and hazardous areas.
- Up to 8192 (13 bit) as single turn
- Up to 16384 (14 bit) as multi turn
- Several output types available. Up to 28 V dc input voltage
- Output cable
- Several flanges available
- Up to 3000 rpm speed rotation
- IP 65 as protection grade
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| Linear Absolute Transducers |
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 Linear potentiometer transducers assure high reliability even in the heavier environments. Easy installation made easier for the presence of a groove in the housing potentiometer represent an ideal solution for the most used machine of material manufacture, for example injection press for plastic and gum. These devices can be also used in explosive environment in presence of gas and inflammable powders.ELTRA’s linear transducers are engineered for high accuracy, high cycle-life and easy installation. Standard strokes are from 10 (4/10″) mm to 1250 mm (4 ft).ELTRA’s magnetostrictive transducers provide accurate, non-contact position sensing in a wide range of configurations. Rod style for fi tting within hydraulic pistons or profile housing for a convenient mounting are available. ELTRA’s magnetostrictive sensors feature absolute positioning, greater reliability, easy control, noise reduction, robustness, increased productivity, reduced shock and stress on mechanical parts, high precision for high performances, cost-effective solutions. |
| Linear Potentiometers |
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Linear Potentiometer [EPLA]
EPLA is an absolute linear potentiometer assuring great reliability even in tough applications with heavy vibrations and shocks. The groove on the enclosure of the transducer represents an excellent alternative to the usual system of fastening with brackets. Installation is also made simpler by the absence of variations on the electrical output signal outside of the theoretical electrical stroke. EPLA represents a great solution in most machinery for material processing such as injection presses for plastic, rubber and so on. This transducer is also suitable for being used in explosive environment or in presence of gas or infl ammable powders.
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Cylindric Linear Potentiometer [EPLB]
EPLB is an absolute linear potentiometer transducer. Mechanical mounting is made simpler by the presence of two spherical joints on the two sides and by the enclosure’s cylindrical shape. The main characteristic is the absence of variations on the electrical output signal outside of the theoretical electrical stroke. Thanks to its robustness and precision EPLB represents a great solution in most mechanical application for automation.
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Linear Potentiometer with Cursor [EPLC]
EPLC is an absolute linear potentiometer transducer without internal rod. This transducer is characterized by a cursor with integrated coupling sliding on the axis. This system eliminates problems due to air compression generated from the insertion of the rod and longer strokes are reached. The main characteristic is the absence of variations on the electrical output signal outside of the theoretical electrical stroke.
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Linear Potentiometer with sensing system [EPLT]
EPLT is an absolute linear potentiometer transducer. This model is characterized by the absence of cursor and the presence of a sensing system, composed by a moving rod, stainless steel sphere mounted on a threaded prod and a spring. This transducer is suitable for applications where short strokes are requested. Moreover, the connector output is disaligned respect to the axis of the device in order to allow the through rod structure and giving greater robustness.The presence of the spring assures an automatic head positioning making this device suitable for being used in precise applications on cams or on product outputs coming from automatic production lines. EPLT is also characterized by the absence of variations on the electrical output signal outside of the theoretical electrical stroke.
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| Magnetostrictive |
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Analog Output Magnetosctrictive [EMSPA]
EMSPA is an absolute linear magnetostrictive transducer with analog interface.Thanks to the absence of electric contact on the enclosure there is no issue of wear and deterioration during working life. Magnetostrictive technology guaranties great performances of speed and precision. High reliability and simple installation even for applications with mechanical stresses, shocks or high contamination are assured by the compact size and the rugged enclosure.
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Analog Output Magnetosctrictive [EMSPB]
EMSPB is an absolute linear magnetostrictive transducer with analog interface. Thanks to the absence of electrical contact on the enclosure there is no issue of wear and deterioration during working life. Magnetostrictive technology guaranties great performances of speed and precision. High reliability and simple installation even for applications with mechanical stresses, shocks or high contamination are assured by the compact size and the rugged enclosure.
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SSI Output Magnetostrictive [EMSPS]
EMSPS is an absolute linear magnetostrictive transducer featuring a digital RS422-SSI compliant output. The main characteristic of magnetostrictive transducers is the absence of electric contact on the enclosure there is no issue of wear and deterioration during working life guaranteeing high displacement speed and precision. High reliability and simple installation even for applications with mechanical stresses, shocks or high contamination are assured by the compact size and the rugged enclosure.
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Rod Magnetostrictive with Analog Output [EMSSA]
EMSSA is an absolute linear magnetostrictive transducer featuring an analog interface. Main characteristics of magnetostrictive transducers is the absence of electric contact on the enclosure there is no issue of wear and deterioration during working life guaranteeing high displacement speed and precision. High reliability and simple installation even for applications with mechanical stresses, shocks or high contamination are assured by the compact size and the rugged enclosure. This series has been designed for being mounted internally to high applications (350 bar, 700 bar peak) such as hydraulic and pneumatic cylinders and so forth.
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SSI Output Rode Magnetostrictive T [EMSSS]
EMSSS is an absolute linear magnetostrictive transducer featuring a SSI output. Main characteristics of magnetostrictive transducer is the absence of electric contact on the enclosure so there is no issue of wear and deterioration during working life guaranteeing high displacement speed and precision. High reliability and simple installation even for applications with mechanical stresses, shocks or high contamination are assured by the compact size and the rugged enclosure. This series has been designed for being mounted internally to high preassure (350 bar, 700 bar peak) such as hydraulic and pneumatic cylinders and so forth.
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| For Linear Potentiometers |
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Accessories
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| For Magnetostrictive |
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Magnetostricitve Accessories
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Accessories for Rod Magnetostrictive
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| Conditioning Boards |
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Adapter Signal Splitter [EMB]
This board is used when it is necessay to adapt the encoder electronic characteristics to the controller one than one board reducing drastically wiring by mounting boards in a single support. Main functions of the EMB are output signal splitting and adaption of output stages. For instance, it happens to have an encoder with a 5 Vdc output and a control accepting only 24 Vdc data. It may also happen to use an encoder connected with a controller at the same voltage, but having different electronics. It can solve a wide range of problems: check the ordering code in the back page to find further information. On the board there can be present up to two different voltages and it must be supplied through the X4 connector with the higher voltage used. Moreover, it is possible to obtain up to eight outputs by assembling more.
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Encoder Signal Selector [EMD]
This board is used when is necessary to carry out a selected signal among a maximum of three inputs. The EMD board accepts as input signals coming from a maximum of three encoders and supplies as output the signals electronically selected of one of these. The output signal is selected by opportunately suppling the two inputs, IN1 and IN2, according to the working diagram (see back side). Output and encoder type to be connected have to be within the range described in the ordering code. All electronic types of the connected encoders have to be the same. Moreover, the EMD supplies three contacts normally open switching to close when the respective input is selected.
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Since the beginning our philosophy has always been to provide a 360° service to our Customers delivering alsoaccessories like converting boards, couplings, flanges and so forth in order to semplify our Customers’ job. ELTRA can also make cables and wiring based on Customer’s specifications.
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