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Incremental Optical Encoders

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The simplest and most commonly used encoders are incremental rotary encoders, which provide information about the instantaneous position of a rotating shaft. The encoder does this by producing one square wave cycle per increment of shaft movement. This increment, referred to as the resolution of the encoder, is built directly into the internal hardware of the device on the code disc. By rotating this code disc in the path of a light source, it acts like a shutter to alternately shut off or transmit the light to a photodetector. And encoder resolution of 360 means that 360 square wave cycles are produced in one complete rotation of the shaft. By counting the number of cycles, you can tell the position of the shaft, relative to its starting position.

Incremental encoders are ideal for rotary encoder applications where relative movement is desired.

Shafted Body StyleShafted Body Style

30mm and 40mm Body Diameters

BEI GHM3 optical incremental encoder

Model GHM3 Incremental Rotary Encoder

This 30mm size shafted rotary encoder offers high accuracy in a robust, compact package.

  • Shaft Size: 4-6mm (0.16" to 0.24")
  • Resolution (Max): 1024
  • Mechanical Speed RPM (Max): 6,000
  • Standard Operating Temperature: -20°C to +80°C
  • Extreme Environments: Wet, Dirty/Dusty
Encoders for wet environmentsEncoders for dirty and dusty environmentsView Data Sheet
BEI GHM4 optical incremental encoder

Model GHM4 Incremental Rotary Encoder

Shafted 40mm sized rotary encoder offers robust mechanical and opto-electrical components in a solid, compact package.

  • Shaft Size: 4-6mm (0.16" to 0.24")
  • Resolution (Max): 2,500
  • Mechanical Speed RPM (Max): 9,000
  • Standard Operating Temperature: -20°C to +80°C
  • Extreme Environments: Wet, Dirty/Dusty
Encoders for wet environmentsEncoders for dirty and dusty environmentsView Data Sheet

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2", 58mm, and 2.5" Body Diameters

H20 optical incremental encoder from BEI

Model H20® Incremental Rotary Encoder

Compact 2.0" rotary encoder designed with rugged features including a shock resistant disc, heavy duty bearings, and EMI shielding.

  • Shaft Size: 0.25 to 0.375" (6.35 to 9.53mm)
  • Resolution (Max): 4,096
  • Mechanical Speed RPM (Max): 8,000
  • Standard Operating Temperature: 0°C to +70°C
  • Available Certifications: Intrinsically safe, Nonincendive
  • Extreme Environments: Wet, Dirty/Dusty, Extended temp, Corrosive/Washdown,Hazardous Area, High Shock/Vibration
Encoders for wet environmentsEncoders for dirty and dusty environmentsEncoders for extended temperature environmentsEncoders and sensors for high shaft load environmentsEncoders for corrosive or washdown environmentsEncoders for hazardous areasEncoder products high shock and vibration environments View Data Sheet
BEI DHM5 optical incremental encoder shafted design for shock and vibration

Model DHM5 Shafted Incremental Encoder

58mm shafted rotary encoder featuring high resolution options, high ingress protection and excellent resistance to shock and vibration.

  • Shaft Size: 6 to 10mm (0.24" to 0.39")
  • Resolution (Max): 80,000
  • Mechanical Speed RPM (Max):9,000
  • Standard Operating Temperature: -30°C to +100°C
  • Extreme Environments: Wet, Dirty/Dusty, Extended temp
Encoders for wet environmentsEncoders for dirty and dusty environmentsEncoders for extended temperature environmentsView Data Sheet ATEX: (PDF -163KB)
Incremental: (PDF -338KB)
Programmable: (PDF -333KB)
IBM5/IHM5 Intrinsic Safety Encoder

Model IBM5 / Model IHM5 Intrinsically Safe Encoder

58mm intrinsically safe rotary encoder specially designed for hazardous areas. Model IBM5 is offered with a stainless steel body, and Model IHM5 is offered with an aluminum body.

  • Shaft Size: 6 to 10mm (0.24" to 0.39")
  • Resolution (Max): 80,000
  • Mechanical Speed RPM (Max) 9,000:
  • Standard Operating Temperature °C: -30 to +70
  • Available Certifications: Intrinsically safe
  • Extreme Environments: Wet, Dirty/Dusty, Extended temp, Hazardous Area
Encoders for wet environmentsEncoders for dirty and dusty environmentsEncoders for extended temperature environmentsEncoders for hazardous areaIBM5 Data Sheet (PDF -153KB)
IHM5 Data Sheet (PDF -152KB)
Optical incremental encoder DXM5 from BEI

Model DXM5 Stainless Steel Optical Encoder

58mm stainless steel (316) encoder featuring high IP69K protection and high temperature performance.

  • Shaft Size: 10mm (0.39")
  • Resolution (Max): 80,000
  • Mechanical Speed RPM (Max):9,000
  • Standard Operating Temperature: -30°C to +100°C
  • Available Certifications:
  • Extreme Environments: Wet, Dirty/Dusty, High Shaft Load, Corrosive/Washdown, High Shock/Vibration
Encoders for wet environmentsEncoders for dirty and dusty environmentsEncoders and sensors for high shaft load environmentsEncoders for corrosive or washdown environmentsEncoder products high shock and vibration environmentsView Data Sheet
58mm rotary encoder incremental GHM5 for extreme environments

Model GHM5 Shafted Incremental Encoder

58mm shafted rotary encoder featuring high resolution options and IP65 or IP67 protection levels.

  • Shaft Size: 6 to 12mm (0.24" to 0.47")
  • Resolution (Max): 2,500
  • Mechanical Speed RPM (Max): 9,000
  • Standard Operating Temperature: -20°C to +80°C
  • Extreme Environments: Wet, Dirty/Dusty
Encoders for wet environmentsEncoders for dirty and dusty environmentsView Data Sheet
H25 optical incremental encoder rugged design for shock/vibration, wet/dusty environments

Model H25 ® Shafted Incremental Encoder

2.5" shafted rotary encoder featuring EMI shielding, 40lb ABEC 7 bearings and a variety of hazardous area certifications. Available with programmable resolution as the Model H25® Omnicoder®.

  • Shaft Size: 0.375 to 0.5" (9.53 to 12.7mm)
  • Resolution (Max): 72,000
  • Mechanical Speed RPM (Max): 30,000
  • Standard Operating Temperature: 0°C to +70°C
  • Available Certifications: Intrinsically safe, Nonincendive
  • Extreme Environments: Wet, Dirty/Dusty, Extended temp, High Shaft Load, Corrosive/Washdown, Hazardous Area, High Shock/Vibration
Encoders for wet environmentsEncoders for dirty and dusty environmentsEncoders for extended temperature environmentsEncoders and sensors for high shaft load environmentsEncoders for corrosive or washdown environmentsEncoders for hazardous areaEncoder products high shock and vibration environmentsView Data Sheet
Model H25® Standard: (PDF -512KB)
Model H25® Omnicoder® Programmable: (PDF -500KB)

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90mm and 3.8" Body Diameters

Optical encoder incremental GHM9

Model GHM9/GXM9 Incremental Shaft Encoder

90mm shafted rotary encoder especially designed for heavy duty applications. Featuring optional mechanical over-speed switch and stainless steel housing.

  • Shaft Size: 11 to 14mm (0.43" to 0.55")
  • Resolution (Max): 10,000
  • Mechanical Speed RPM (Max):6,000
  • Standard Operating Temperature: -20°C to +80°C
  • Extreme Environments: Dirty/Dusty, Extended Temp, High Shaft Load, Corrosive/Washdown, High Shock/Vibration
Encoders for dirty and dusty environmentsEncoders for extended temperature environmentsEncoders and sensors for high shaft load environmentsEncoders for corrosive or washdown environmentsEncoder products high shock and vibration environmentsView Data Sheet GHM9/GXM9: (PDF -314KB)
GHM9 Overspeed: (PDF -170KB)
Optical encoder incremental NHM9

Model NHM9 / NXM9 Incremental Shaft Encoder

90mm shafted encoder offers a current (0/4...20mA) or voltage output (0...10Vdc) proportional to the rotation speed. Available with additional incremental output and stainless steel housing.

  • Shaft Size: 11 to 14mm (0.43" to 0.55")
  • Resolution (Max): 10,000
  • Mechanical Speed RPM (Max): 6,000
  • Standard Operating Temperature: -20°C to +80°C
  • Extreme Environments: Wet, Dirty/Dusty, High Shaft Load, High Shock/Vibration
Encoders for wet environmentsEncoders for dirty and dusty environmentsEncoders and sensors for high shaft load environmentsEncoder products high shock and vibration environmentsView Data Sheet NHM9/NXM9 Opto-current/voltage output [FR] (PDF -114KB)
NHM9/NXM9 Opto Programmable-current/voltage output [FR] (PDF -339KB)
NHM9/NXM9 Tachy - current/voltage & incremental output [FR] (PDF -138KB)
NHM9/NXM9 Tachy Programmable - current/voltage & incremental output [FR] (PDF -364KB)
Optical encoder incremental IHM9

Model IHM9 Incremental Intrinsically Safe Encoder

90mm shafted, intrinsically safe rotary encoder specially designed for hazardous areas.

  • Shaft Size: 11 to 14mm (0.43" to 0.55")
  • Resolution (Max): 80,000
  • Mechanical Speed RPM (Max): 6,000
  • Standard Operating Temperature: -30°C to +70°C
  • Available Certifications: Intrinsic-Safety
  • Extreme Environments: Wet, Dirty/Dusty, High Shaft Load, High Shock/Vibration
Encoders for wet environmentsEncoders for dirty and dusty environmentsEncoders and sensors for high shaft load environmentsEncoder products high shock and vibration environmentsEncoders for hazardous areaView Data Sheet
Incremental encoder H38 for explosion proof sensor solutions

Model H38 Incremental Explosion-Proof Encoder

3.8" shafted explosion-proof encoder features double bearing seals and cast aluminum housing with hard anodized and dichromate sealed finish.

  • Shaft Size: 0.375" (9.53mm)
  • Resolution (Max): 72,000
  • Mechanical Speed RPM (Max): 10,000
  • Standard Operating Temperature: 0°C to +70°C
  • Available Certifications: Explosion Proof, Intrinsic-Safety
  • Extreme Environments: Wet, Dirty/Dusty, Extended temp, Corrosive/Washdown, Hazardous Area, High Shock/Vibration
Encoders for wet environmentsEncoders for dirty and dusty environmentsEncoders for extended temperature environmentsEncoders for corrosive or washdown environmentsEncoders for hazardous areaEncoder products high shock and vibration environmentsView Data Sheet

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4.0" and 116mm Body Diameters

H40 incremental-encoder shock-proof motion control applications

Model H40 Incremental Shock-Proof Encoder

4.0" shafted shock-proof incremental encoder offers the precision of an optical encoder with an internal structure that is totally isolated from severe shock and shaft loading conditions.

  • Shaft Size: 0.625" (15.88mm)
  • Resolution (Max) 72,000:
  • Mechanical Speed RPM (Max): 10,000
  • Standard Operating Temperature: 0°C to+70°C
  • Available Certifications : Explosion Proof, Intrinsic-Safety
  • Extreme Environments: Wet, Dirty/Dusty, Extended temp, High Shaft Load, Hazardous Area, High Shock/Vibration
Encoders for wet environmentsEncoders for dirty and dusty environmentsEncoders for extended temperature environmentsEncoders and sensors for high shaft load environmentsEncoders for hazardous areaEncoder products high shock and vibration environmentsView Data Sheet
Flame-proof encoder GAMX from BEI

Model GAMX / GEMX Incremental Flame-Proof Encoder

116mm shafted flame proof encoder offers a robust, heavy-duty design for hazardous areas. Available with stainless steel housing as model GEMX.

  • Shaft Size: 12mm (0.47")
  • Resolution (Max): 10,000
  • Mechanical Speed RPM (Max): 6,000
  • Standard Operating Temperature : -20°C to +60°C
  • Available Certifications: Flame Proof
  • Extreme Environments: Dirty/Dusty, High Shaft Load, Hazardous Area, Corrosive/Washdown
Encoders for dirty and dusty environmentsEncoders and sensors for high shaft load environmentsEncoders for hazardous areaEncoders for corrosive or washdown environmentsView Data Sheet GAMX / GEMX (PDF -177KB)

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Through Shaft Body StyleThrough Shaft Body Style

2", 2.5" and 58mm Body Diameters

BEI Encoder Model HS20 optical incremental encoders

Model HS20 Incremental Hollow Shaft Encoder

2.0" through-shaft optical encoder featuring a compact design for tight installations and a well-sealed housing to stand up to dust, dirt, and splashing liquids. Also available as a blind shaft encoder.

  • Bore Size: 0.25" to 0.625" (6.35 to 15.88mm)
  • Resolution (Max): 1,024
  • Mechanical Speed RPM (Max): 6,000
  • Standard Operating Temperature: 0°C to +70°C
  • Available Certifications: Intrinsic-Safety
  • Extreme Environments: Dirty/Dusty, Extended temp, Hazardous Areas, High Shock/Vibration
Encoders for dirty and dusty environmentsEncoders for extended temperature environmentsEncoders for hazardous areaEncoder products high shock and vibration environmentsView Data Sheet
Rotary encoder DHO5 optical incremental for harsh environments

Model DHO5 Incremental Hollow Shaft Encoder

58mm through-shaft optical encoder featuring high resolution, IP65 protection and options for high operating temperature or ATEX certification for hazardous areas.

  • Bore Size: 6mm to 15mm (0.24" to 0.59")
  • Resolution (Max): 80,000
  • Mechanical Speed RPM (Max): 6000
  • Standard Operating Temperature: -30°C to +100°C
  • Extreme Environments: Dirty/Dusty, Extended temp
Encoders for dirty and dusty environmentsEncoders for extended temperature environmentsView Data Sheet ATEX: (PDF -182KB)
Incremental: (PDF -380KB)
High Temp, Stainless: (PDF -125KB)
IBO5/IHO5 Intrinsic Safety Encoder

Model IHO5 / IBO5 Incremental Intrinsically Safe Encoder

58mm intrinsically safe rotary encoder specially designed for hazardous areas. Model IBO5 is offered with a stainless steel body, and Model IHO5 is offered with an aluminum body.

  • Bore Size: 6mm to 15mm (0.24" to 0.59")
  • Resolution (Max): 80,000
  • Mechanical Speed RPM (Max): 6000
  • Standard Operating Temperature: -30°C to +70°C
  • Available Certifications: Intrinsic-Safety
  • Extreme Environments: Dirty/Dusty, Hazardous Area, Corrosive/Washdown
Encoders for dirty and dusty environmentsEncoders for hazardous areaEncoders for corrosive or washdown environmentsView Data Sheet IHO5 ATEX: (PDF -180KB)
IBO5 ATEX (PDF -103KB)
58mm though-shaft optical encoder

Model GHT514 Incremental Hollow Shaft Encoder

58mm though shaft optical encoder specially designed for heavy, industrial motor applications. Available with Incremental or UVW outputs, or ATEX certification for hazardous areas.

  • Bore Size: 6mm to 14mm (0.24" to 0.55")
  • Resolution (Max): 2,500
  • Mechanical Speed RPM (Max): 6,000
  • Standard Operating Temperature : -20°C to +80°C
  • Extreme Environments: Dirty/Dusty, High Shaft Load, Hazardous Area, High Shock/Vibration
Encoders for dirty and dusty environmentsEncoders and sensors for high shaft load environmentsEncoders for hazardous areaEncoder products high shock and vibration environmentsView Data Sheet ATEX [FR] (PDF -157KB)
Incremental: (PDF -149KB)
UVW [FR] (PDF -305KB)
HS25 hollow-shaft incremental encoder with rugged metal housing and IP65 environmental rating

Model HS25 Incremental Hollow Shaft Encoder

2.5" hollow shaft rotary encoder provides a low-profile (2") package with heavy-duty features such as dual bearings, IP65 environmental rating and a rugged metal housing. Available with optional hazardous area certifications.

  • Bore Size: 0.375" to 0.75" (9.53 to 19.05mm)
  • Resolution (Max): 2048
  • Mechanical Speed RPM (Max): 6,000
  • Standard Operating Temperature: 0°C to +70°C
  • Available Certifications: Intrinsic-Safety, Nonincendive
  • Extreme Environments: Dirty/Dusty, Extended Temperature, Hazardous Area, High Shock/Vibration, Corrosive/Washdown
Encoders for dirty and dusty environmentsEncoders for extended temperature environmentsEncoders for hazardous areaEncoder products high shock and vibration environmentsEncoders for corrosive or washdown environmentsView Data Sheet

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3.5", 3.8", and 90mm Body Diameters

HS35 optical hollow shaft
encoder

Model HS35 Incremental Hollow Shaft Encoder

3.5" hollow shaft rotary encoder is available as a through-shaft or blind shaft, and features dual bearings, IP65 environmental rating, rugged metal housing, and optional dual outputs. Available with optional hazardous area certifications.

  • Bore Size: 0.50" to 1.00" (12.7 to 25.4mm)
  • Resolution (Max): 80,000
  • Mechanical Speed RPM (Max): 6,000
  • Standard Operating Temperature: 0°C to +70°C:
  • Available Certifications: Intrinsic-Safety, Nonincendive
  • Extreme Environments: Dirty/Dusty, Extended Temperature, Hazardous Area, High Shock/Vibration, Corrosive/Washdown
Encoders for dirty and dusty environmentsEncoders for extended temperature environmentsEncoders for hazardous areaEncoder products high shock and vibration environmentsEncoders for corrosive or washdown environmentsView Data Sheet
Model HS35 Incremental Drawworks Encoder

Model HS35 Incremental Drawworks Encoder

3.5" specially designed drawworks encoder combines rugged, heavy-duty features into a unique through shaft style for use as a winch-turns counter in the drawworks system of oil rigs.

  • Bore Size: 1.00" (25.4mm)
  • Resolution (Max): 5,000
  • Mechanical Speed RPM (Max): 6,000
  • Standard Operating Temperature: -40°C to +85°C
  • Available Certifications: Intrinsic-Safety, Nonincendive
  • Extreme Environments: Dirty/Dusty, Extended Temperature, Hazardous Area, High Shock/Vibration, Corrosive/Washdown
Encoders for dirty and dusty environmentsEncoders for extended temperature environmentsEncoders for hazardous areaEncoder products high shock and vibration environmentsEncoders for corrosive or washdown environmentsView Data Sheet
GHU9 optical incremental encoder for heavy duty applications

Model GHU9 / GXU9 Incremental Hollow Shaft Encoder

90mm through shaft optical encoder especially design for heavy-duty applications, featuring IP65 environmental protection, optional stainless steel housing and optional overspeed switch function.

  • Bore Size: 30mm (1.18")
  • Resolution (Max): 10,000
  • Mechanical Speed RPM (Max): 3,600
  • Standard Operating Temperature: -20°C to +80°C
  • Extreme Environments: Wet, Dirty/Dusty, Corrosive/Washdown, High Shock/Vibration
Encoders for wet environmentsEncoders for dirty and dusty environmentsEncoders for corrosive or washdown environmentsEncoder products high shock and vibration environmentsView Data Sheet Incremental: (PDF -391KB)
Overspeed: (PDF -177KB)
GHU9 optical incremental encoder for heavy duty applications

Model NHU9 / NXU9 Incremental Hollow Shaft Encoder

90mm through shaft encoder offers a current (0/4...20mA) or voltage output (0...10Vdc) proportional to the rotation speed. Available with additional incremental output and stainless steel housing.

  • Bore Size: 30mm (1.18")
  • Resolution (Max): 10,000
  • Mechanical Speed RPM (Max): 3,600
  • Standard Operating Temperature: -20°C to +80°C
  • Extreme Environments: Wet, Dirty/Dusty, High Shock/Vibration, Corrosive/Washdown
Encoders for wet environmentsEncoders for dirty and dusty environmentsEncoder products high shock and vibration environmentsEncoders for corrosive or washdown environmentsView Data Sheet NHU9/NXU9 Opto-current/voltage output [FR] (PDF -186KB)
NHU9/NXU9 Opto Programmable-current/voltage output [FR] (PDF -309KB)
NHU9/NXU9 Tachy - current/voltage & incremental output [FR] (PDF -368KB)
NHU9/NXU9 Tachy Programmable - current/voltage & incremental output [FR] (PDF -331KB)

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109mm and 4.5" Body Diameters

Heavy Duty encoder GAUX flame proof design with hazardous area certifications

Model GAUX / GEUX Incremental Flame Proof Encoder

116mm flame proof encoder offers a robust, heavy-duty design for hazardous areas. Available with stainless steel housing as model GEUX.

  • Bore Size: 16mm to 30mm (0.63" to 1.18")
  • Resolution (Max): 10,000
  • Mechanical Speed RPM (Max): 3,000
  • Standard Operating Temperature: -20°C to +60°C
  • Available Certifications: Explosion Proof
  • Extreme Environments: Dirty/Dusty, High Shaft Load, Corrosive/Washdown, Hazardous Area.
Encoders for dirty and dusty environmentsEncoders and sensors for high shaft load environmentsEncoders for corrosive or washdown environmentsEncoders for hazardous areaView Data Sheet
HS45 optical incremental encoder

Model HS45 Incremental Heavy Duty Encoder

4.5" large bore, heavy duty rotary encoder designed to operate in extreme environments, featuring single or dual output versions, preloaded bearings for mechanical stability and long service life, and hazardous area certifications.

  • Bore Size: 1.75 (44.45mm)
  • Resolution (Max): 8192
  • Mechanical Speed RPM (Max): 5,000
  • Standard Operating Temperature : 0°C to +70°C
  • Available Certifications: Intrinsic-Safety, Nonincendive
  • Extreme Environments: Dirty/Dusty, Extended Temperature, Hazardous Area, High Shock/Vibration, Corrosive/Washdown
Encoders for dirty and dusty environmentsEncoders for extended temperature environmentsEncoders for hazardous areaEncoder products high shock and vibration environmentsEncoders for corrosive or washdown environmentsView Data Sheet

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Blind Shaft Body StyleBlind Shaft Body Style

2", 2.5" and 58mm Body Diameters

BEI Encoder Model HS20 optical incremental encoders

Model HS20 Incremental Hollow Shaft Encoder

2.0" blind shaft optical encoder featuring a compact design for tight installations and a well-sealed housing to stand up to dust, dirt, and splashing liquids. Also available as a through-shaft encoder.

  • Bore Size: 0.25" to 0.625" (6.35 to 15.88mm)
  • Resolution (Max): 1,024
  • Mechanical Speed RPM (Max): 6,000
  • Standard Operating Temperature: 0°C to +70°C
  • Available Certifications: Intrinsic-Safety
  • Extreme Environments: Dirty/Dusty, Extended temp, Hazardous Areas, High Shock/Vibration
Encoders for dirty and dusty environmentsEncoders for extended temperature environmentsEncoders for hazardous areaEncoder products high shock and vibration environmentsView Data Sheet
ES20 incremental encoder IP67 environmental rating

Model ES20 Incremental Encoder

2.0" encoder with unique magnetic shaft coupling connection offers high IP67 environmental rating. The magnetic coupling provides complete isolation from high shock, vibration, dust and liquid, and is tolerant of shaft misalignment. Also available as a 2.5" encoder.

  • Bore Size: 0.25" to 0.375" (6.35 to 9.53mm)
  • Resolution (Max): 1,024
  • Mechanical Speed RPM (Max): 5,000
  • Standard Operating Temperature: 0°C to +70°C
  • Available Certifications: Intrinsic-Safety, Nonincendive
  • Extreme Environments: Wet, Dirty/Dusty, Extended temp, Corrosive/Washdown, Hazardous Area, High Shock/Vibration
Encoders for wet environmentsEncoders for dirty and dusty environmentsEncoders for extended temperature environmentsEncoders for corrosive or washdown environmentsEncoders for hazardous areaEncoder products high shock and vibration environmentsView Data Sheet
Installation (PDF -90KB)
Rotary encoder IHK5/IBK5

Model IHK5 / IBK5 Incremental Hollow Shaft Encoder

58mm blind shaft, optical encoder specially designed for hazardous area environments.

  • Bore Size: 6mm to 15mm (0.24" to 0.59")
  • Resolution (Max): 80,000
  • Mechanical Speed RPM (Max): 6000
  • Standard Operating Temperature: -30°C to +70°C
  • Available Certifications: Intrinsic-Safety
  • Extreme Environments: Dirty/Dusty, Hazardous Area
Encoders for dirty and dusty environmentsEncoders for hazardous areaView Data Sheet ATEX
Programmable
HS25 hollow-shaft incremental encoder with rugged metal housing and IP65 environmental rating

Model HS25 Incremental Hollow Shaft Encoder

2.5" blind shaft, optical encoder provides a low-profile (2") package with heavy-duty features such as dual bearings, IP65 environmental rating and a rugged metal housing. Available with optional hazardous area certifications.

  • Bore Size: 0.375" to 0.75" (9.53 to 19.05mm)
  • Resolution (Max): 2048
  • Mechanical Speed RPM (Max): 6,000
  • Standard Operating Temperature: 0°C to +70°C
  • Available Certifications: Intrinsic-Safety, Nonincendive
  • Extreme Environments: Dirty/Dusty, Extended Temperature, Hazardous Area, High Shock/Vibration, Corrosive/Washdown
Encoders for dirty and dusty environmentsEncoders for extended temperature environmentsEncoders for hazardous areaEncoder products high shock and vibration environmentsEncoders for corrosive or washdown environmentsView Data Sheet
Encoder ES25 with IP67 environmental rating

Model ES25 Incremental Encoder

2.5" encoder with unique magnetic shaft coupling connection offers high IP67 environmental rating. The magnetic coupling provides complete isolation from high shock, vibration, dust and liquid, and is tolerant of shaft misalignment. Also available as a 2.0" encoder.

  • Bore Size: 0.25" to 0.375" (6.35 to 9.53mm)
  • Resolution (Max): 2,048
  • Mechanical Speed RPM (Max): 5,000
  • Standard Operating Temperature: 0°C to +70°C
  • Available Certifications: Intrinsic-Safety, Nonincendive
  • Extreme Environments: Wet, Dirty/Dusty, Extended temp, Corrosive/Washdown, Hazardous Area, High Shock/Vibration
Encoders for wet environmentsEncoders for dirty and dusty environmentsEncoders for extended temperature environmentsEncoders for corrosive or washdown environmentsEncoders for hazardous areaEncoder products high shock and vibration environmentsView Data Sheet
Installation (PDF -90KB)

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3.5", 4.5", and 5.2" Body Diameters

HS35 optical hollow shaft
encoder

Model HS35 Incremental Hollow Shaft Encoder

3.5" hollow shaft rotary encoder is available as a through-shaft or blind shaft, and features dual bearings, IP65 environmental rating, rugged metal housing, and optional dual outputs. Available with optional hazardous are certifications.

  • Bore Size: 0.50" to 1.00" (12.7 to 25.4mm)
  • Resolution (Max): 80,000
  • Mechanical Speed RPM (Max): 6,000
  • Standard Operating Temperature: 0°C to +70°C:
  • Available Certifications: Intrinsic-Safety, Nonincendive
  • Extreme Environments: Dirty/Dusty, Extended Temperature, Hazardous Area, High Shock/Vibration, Corrosive/Washdown
Encoders for dirty and dusty environmentsEncoders for extended temperature environmentsEncoders for hazardous areaEncoder products high shock and vibration environmentsEncoders for corrosive or washdown environmentsView Data Sheet
HS45 optical incremental encoder

Model HS45 Incremental Heavy Duty Encoder

4.5" large bore, heavy duty rotary encoder designed to operate in extreme environments, featuring single or dual output versions, preloaded bearings for mechanical stability and long service life, and hazardous area certifications.

  • Bore Size: 1.75 (44.45mm)
  • Resolution (Max): 8192
  • Mechanical Speed RPM (Max): 5,000
  • Standard Operating Temperature : 0°C to +70°C
  • Available Certifications: Intrinsic-Safety, Nonincendive
  • Extreme Environments: Dirty/Dusty, Extended Temperature, Hazardous Area, High Shock/Vibration, Corrosive/Washdown
Encoders for dirty and dusty environmentsEncoders for extended temperature environmentsEncoders for hazardous areaEncoder products high shock and vibration environmentsEncoders for corrosive or washdown environmentsView Data Sheet
HS52 explosion-proof, incremental encoder for Division 1 or Zone 1 hazardous environments

Model HS52 Incremental Explosion Proof Encoder

5.2" explosion proof encoder with UL and ATEX ratings, is capable of operating directly in Division 1 or Zone 1 environments. Designed with a flex shaft in the bore, the HS52 can be rigidly mounted, preventing stress to encoder bearings and providing a more secure attachment for the required hazardous area conduit fittings.

  • Bore Size: 0.39" Spline (9.91mm)
  • Resolution (Max): 80,000
  • Mechanical Speed RPM (Max): 6,000
  • Standard Operating Temperature °C: 0°C to +70°C
  • Available Certifications: Explosion Proof
  • Extreme Environments: Dirty/Dusty, Extended Temperature, Corrosive/Washdown, Hazardous Area, High Shock/Vibration
Encoders for dirty and dusty environmentsEncoders for extended temperature environmentsEncoders for corrosive or washdown environmentsEncoders for hazardous areaEncoder products high shock and vibration environmentsView Data Sheet

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