Resolvers

Solid shaft:
Hollow shaft:
Incremental:
Singleturn:
Multiturn:

Interested in our rotary encoders, but still have change requests? We are happy to modify it for you so that it fits perfectly.

Learn more

  • Tel.: +49 / 7424 - 89 - 0
We will be pleased to help you.

  • Hengstler GmbH
    Uhlandstr. 49
    78554 Aldingen
  • Tel. +49 / 7424 - 89 -286
  • Support request

Brushless resolvers are the ideal rotor position indicators for the position feedback of brushless motors, robots or direct drives. They are robust, reliable and suitable for high operating temperatures until 155 °C and resistant to most process liquids, contaminations, radiation and EMC-Interferences as well as highly shock-proof and vibration-resistant.

1 - 4 of 4
Rotary_encoder/Resolvers/BRCX Series Resolver
Diameter
25,4 ... 139,7 mm
Resolution
ST: depends on signal processing Bit
Solid- / Hollow Shaft
Hollow 4 ... 92,71 mm
Protection case
< IP40
Interface
Analog
Approval
n/a
Features
Housing Diameter up to 140 mm
Robust
Shock and vibration resistance
Rotary_encoder/Resolvers/BRX Series Resolver
Diameter
38,1 ... 53,34 mm
Resolution
ST: depends on signal processing Bit
Solid- / Hollow Shaft
Hollow 9,52 ... 22 mm
Protection case
< IP40
Interface
Analog
Approval
n/a
Features

Housing Diameter up to 53 mm
Robust
Shock and vibration resistance
Rotary_encoder/Resolvers/R11 Series Resolver
Diameter
27,94 mm
Resolution
ST: depends on signal processing Bit
Solid- / Hollow Shaft
Solid 4 ... 6 mm
Protection case
IP40
Interface
Analog
Approval
n/a
Features
Brushless construction
Rugged housing
Shock and vibration resistant
high operating temperature
Rotary_encoder/Resolvers/R25 Series Resolver
Diameter
66,55 mm
Resolution
ST: depends on signal processing Bit
Solid- / Hollow Shaft
Solid 9,25 mm
Protection case
IP64 / IP65
Interface
Analog
Approval
n/a
Features
Brushless construction
Rugged housing
Shock and vibration resistant
high operating temperature
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Frequently asked questions

A rotary encoder, often referred to as simply a shaft encoder, is an electro-mechanical device that converts angular positioning into output signals. Rotary encoders can be broadly segmented by their feedback type as incremental or absolute.
Rotary encoders translate the mechanical rotational motion of an object such as a motor shaft into an electronic signal. Optical rotary encoders measure rotation by shining a LED light through a disc with markings onto an optical sensor to detect motion. Magnetic rotary encoders use a similar principle but measure motion as a magnetized wheel turns and is detected by a magnetic sensor. 
Incremental rotary encoders output a stream of ubiquitous pulses over 360 degrees of rotation, hence the term pulses per revolution of PPR. Incremental rotary encoders can have one channel output (A), two channel output (AB, known as quadrature) as well as an optional index channel (Z).

Absolute rotary encoders output a unique digital word or bit for each position over 360 degrees of rotation. This digital word must be communicated in the same language as the controlling system with options including parallel, serial, field bus and ethernet based communication protocols.

Rotary encoders should be used in any application that requires precision motion control. While a power can be supplied to a motor to make it turn, to control exactly how fast it actually turns  requires real time feedback so that the controlling device can increase or decrease power to achieve a consistent motor speed or shaft position. Rotary encoders are therefore indispensable in precision motion control applications including servo motor feedback, robotics, factory automation and more.
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