Product Details

AV32

[Product Discontinuation June 2025] Upgrade it to HS35 or AV56

Replaces Hollow Shaft Models Directly
No Moving Wearing Parts
Universal 5-24V Operation
LED & Remote Alarm Diagnostics
-40°C to +100°C Operation
2 Year No-Hassle Warranty

CONFIGURE & PRICE ENCODER

Product Manual

Data sheet

Accessories

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Description

The AV32 Encoder will be discontinued on June 2025. Last time opportunity to buy is June 30, 2025 with full production shutdown on October 31, 2025.
The AV32's successor is the hollow shaft HS35X or modular AV56A encoder. We are committed to supporting our customers through this transition. For any questions on the best replacement or general support questions, please reach out to our encoder helpdesk at encoderhelpdesk@nidec-industrial.com.
Want a super-simple, ultra-reliable OEM encoder? Bullseye!
Avtron Bullseye32™ (AV32) encoders eliminate the top culprits that cause encoder failures: there are no bearings, no seals, no optics, no glass disks!
And they don't require expensive mounting flanges like other no-bearing encoders.
Bullseye32 self-centers without a pilot and mounts in seconds: Tighten the rotor clamp on the shaft, bolt the housing in place, and unlock the patented centering mechanism by removing the red end cap. Top it off with the shaft cap. It's so simple, we've created a visual instruction sheet (in our documents tab) for installation.
Bullseye32 is protected against dust, dirt and water. Why waste installation time protecting encoders with baskets? How about a Bullseye instead - it's tougher than most "protective baskets"! And Bullseye32 includes complete self-diagnostics, right down to the signal quality and wiring!
Bullseye32 is also electrically tough: in addition to a built-in voltage regulator, Bullseye32 is fully protected from reverse voltage wiring and shorting.

Specifications

Electrical:

Operating Power: Volts: 5 - 24 VDC; Current: 60mA, no load

Output Format: A Quad B with gated marker (A, /A, B, /B, Z, /Z)

Frequency Range: 0 to 250 kHz

PPR: 32 - 5000

Mechanical:

Speed: 6000 RPM Max., (for higher speeds, consult factory)

Temperature: -40° to 100°C

Environmental: IP65 Electronic Protection

Vibration: 5-2000Hz

Shock: 50G, 11ms duration

Weight: 0.7 lbs [350g]

All dimensions are in inches [millimeters].

Specifications and features are subject to change without notice.

More Advantages

Replaces HS25, HS35, HOG and many other hollow shaft models
Replaces H25® and many other shafted, flange-mounted encoders
Shrugs off dirt, oil, and water contamination
Wide-Gap™ technology
No protective basket needed
Includes wiring self-diagnostics and protection
Slashes installation time
Survives shaft runout errors

Markets & Applications

Industry	Mining	General	Wind Power	Pulp & Paper	Oil & Gas	Marine	Metals	Machinery	Crane & Hoist
Light Mill Duty HS4 Encoder Programming Tool Cables and Connectors Encoder Couplings RUSH AV4 AV25 HS25A AV6A HS6A K661 AV6M AV4 HS35A AV20 DW6
Mill Duty M185 DW6 Cables and Connectors Encoder Couplings AV32 HS35M HS6M K661 M3 HS35X
Heavy Mill Duty XRB3 AVSK Cables and Connectors AV56S XR45 AV44 AV45 AV56A XR5 XR12 AV85A HS45 K661 XP5 XR115 XR125 XR4F XR56A XR850 XR85A AV115 AV125 AV67A HS44 AV850 SMT1
Severe Mill Duty XRB3 Cables and Connectors Encoder Couplings AV5 AV30 XR5 AV12 XR12 HS40 K661 M6C XP5 XPH1 XPH8 XR485 XR685 M7 AV685 AV485 AV30B

Documents

Related Material

No Related Materials Available

Competitive Products

Avtron Bullseye32 Encoders replace a huge range of shafted and hollow shaft encoders.

BEI Encoders:
H20®, H25®, HS25, HS35

Dynapar Encoders:
HS20, HS35, HS35R

Encoder Products (EPC) Encoders
755A, 260, 702, 225A, 225Q, 25T, 25H

Hubner Encoders:
HOG7, HOG8, HOG9

And many, many other models.

All trademarks are the property of their respective owners.

Accessories

Cables and Connectors

PRODUCT GLOSSARY

A Quad B

A Quad B refers to the set of output quadrature signals from an incremental quadrature encoder to indicate speed and direction, including complements: A, A NOT, B, B NOT (, , , ). Most Avtron encoders offer A Quad B output at no extra cost. For more information on quadrature- Wikipedia: http://en.wikipedia.org/wiki/Quadrature_phase
C-Face

A machined flange or elevated/recessed face provided on motors for mounting accessories. Typically provided on the drive end for gearbox/load mounting, C-faces may also be provided on the non-drive end for mounting encoders, brakes, and other accessories.
Contamination

Also known as contaminants, such as water, dirt, dust, oil, and other compounds which enter an encoder through seal failure and can cause optical errors. If the contamination is abrasive, it can also cause bearing failures in the encoder. Modular encoders are very resistant to contamination as they use magnetoresistive sensors and have no bearings.
Encoder

A device which indicates position and speed via a set of digital outputs. Incremental encoders output quadrature (A Quad B) signals, and may add a marker pulse once per revolution. Absolute encoders typically indicate position via a digital message, a set of parallel outputs, or analog values.
Flange Adapter

A Flange Adapter provides the NEMA 56C motor mounting face and properly locates the encoder shaft. The encoder shaft and motor shaft are then connected using a flexible coupling. (Drawing "A") Often flange adapters can be eliminated by directly mounting a modular encoder such as an Avtron AV125, AV850, AV56, AV67, AV85, AV115 unit on the motor flange. (Drawing "B")
Incremental Encoder

An encoder that produces pulses in proportion to distance moved or rotated. Incremental encoders can also have a marker pulse Z, Z NOT (, ) once per revolution to provide a position reference. Avtron produces a full range of incremental rotary encoders.
Line Driver

The chip or output circuit that forms the electrical pulses output from the encoder. Avtron has extremely advanced line driver technology to prevent damage from overvoltage and short circuits. Avtron offers optional high-power line drivers to permit Avtron encoder signals to travel farther down long wires to remote controller/drive locations without the need for repeaters or amplifiers.
MS Connector

The most used encoder connector style in North America. Available in 6, 7, and 10 pin versions, with 10 pins being the most common. Avtron offers pin-for-pin exact replacements for competitors� models using MS connectors. MS connectors are extremely reliable but require soldering. Many users prefer industrial EPIC � style connectors instead. EPIC� is a registered trademark of the Lapp Group.
Magnetic Encoder

Magnetic and magnetoresistive encoders typically use a magnetized rotor with north and south poles lined up around the perimeter of the disk. A magnetoresistive sensor detects the transitions, and these are the counts or pulses generated by the encoder. Magnetic encoders withstand dirt, dust, water, and temperature changes far better than optical encoders.
Magnetic Rotor

A magnetized disk with multiple north and south poles lined up around the perimeter of the disk. A magnetoresistive sensor detects the transitions and generates the pulses generated by the magnetic encoder.
Marker Pulse

The Marker Pulse occurs once per revolution. The purpose of the marker pulse is to provide a repeatable home position location for positioning applications. The marker pulse is often abbreviated as "�Z" or "Z" in the USA and "C" or "N" in Europe.
Mini-MS Connector

This is a 10 pin military style connector used for encoders. It includes a set of locking pins and slots instead of the threaded mating system on most MS connectors. It is also known as "Mini-Twist-Lock", "Bayonet", and "Baldor connector".
Mini-Twist-Lock Connector

This is a 10 pin military style connector used for encoders. It includes a set of locking pins and slots instead of the threaded mating system on most MS connectors. It is also known as "Bayonet", "MS Mini", and "Baldor connector".
Modular Encoders

Modular Encoders mount to a machined C-face or flange adapter on the motor (drive or non-drive end). Modular encoders consist of a rotor that mounts on the shaft, and a stator that bolts to the motor frame. Modular encoders are very rugged, and Avtron encoders feature Wide-Gap sensors to avoid complex shimming or fitting to the motor. Modular C-face encoders are typically used on DC motors; but some AC motors, such as Rockwell�s RPM III AC and Marathon�s Blue and Black Max motors, have C-faces standard on the non-drive end for mounting an encoder.
Optical Disk

An Optical Disk is typically a glass, metal, or plastic disk with fine lines or slots etched around the perimeter that interrupt the beam of light from the light source to an optical sensor. Optical disks can be quite fragile. Avtron uses only shatterproof optical disks with Wide-Gap technology.
Optical Sensors

Optical Sensors are typically phototransistors or other light sensors which sense the light emitted by the light source, as interrupted by, or passed through, the optical disk.
Pulses

Pulses are also known as counts and are the low voltage output transitions which indicate movement of the encoder. Encoders are rated by resolution or PPR (pulses per revolution). Pulses are not the same as lines.
Quadrature

To determine which direction an encoder is revolving, encoders output quadrature signals: two streams of pulses, A & B, generated at 90� timing angles. (Also called A Quad B) A leading B indicates rotation in one direction; B leading A indicates the encoder is rotating in the opposite direction. Example: �A leads B with clockwise rotation as viewed from the encoder face on an HS45 encoder." Many encoders with quadrature outputs also have complementary outputs: A NOT and B NOT signals.
Rotary Encoder

A rotary encoder provides position and/or speed feedback information about a rotating shaft. Rotary encoders may be hollow shaft, no-bearing modular, coupled solid shaft style. They may provide absolute positioning information, or incremental velocity feedback. Avtron rotary encoders are designed and built to be far more reliable than ordinary rotary encoders. Avtron encoder white papers on our blog provide more details of how and why Avtron rotary encoders are more reliable.
Rotor

The disk-shaped portion of the modular encoder that is mounted on the motor shaft. Avtron modular encoders use magnetic rotors.
Seal Failure

Many encoders come sealed from the factory, but as they are temperature cycled, the air inside expands and contracts at a different rate from the air outside the encoder. This puts pressure on the seals of the encoder and eventually breaks them down, creating an unobstructed path to the inside of the encoder. Likewise, external pressure (wash-downs, submersion) creates the same path. If an encoder has seal failure, contaminants get into the encoder and cause errors in optical encoders. Avtron heavy mill duty and severe duty encoders are highly resistant to seal failure, and feature magnetic technology to ignore most contaminants.
Torque Arm

A type of anti-rotation arm used to mount hollow shaft encoders to large frame motors. It features a threaded rod for adjustable radius.
Wide-Gap Technology

Avtron encoders use special optical sensors and magnetoresistive sensors, combined with proprietary circuit designs to allow the sensor to be located much farther from the magnetic rotor or optical disk. This eliminates sensor crashes and makes mounting easy and forgiving of mechanical variation.

Related Products

AV56A

AV67A

AV85A

HS35X

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Product Details

AV32

Description

Specifications

More Advantages

Markets & Applications

Light Mill Duty

Mill Duty

Heavy Mill Duty

Severe Mill Duty

Documents

Related Material

Competitive Products

Competitive Products

Related Products

Rating & review