Incremental encoder

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

Incremental Encoder by Hengstler

From cost-aware standard types through to extremely robust heavy-duty products, HENGSTLER can supply the right incremental encoder for every application. With optical incremental encoders, a line-coded disc made of metal, plastic or glass and mounted on a rotary bearing interrupts a beam of light from a light-emitting diode. The number of lines determines the resolution, i.e. the number of measured points in one revolution. The interruptions of the light beam are sensed by the receptor element and electronically processed. The information is then made available as a rectangular signal at the encoder output. HENGSTLER can provide rotary encoders with up to 10,000 pulses per revolution.


Our Product Highlight:

ICURO RI58 Incremental Encoder

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Rotary_encoders/Incremental_rotary_encoders/Incremental Encoder - ICURO RI58
Diameter
58 mm
Resolution
Number of Pulses: 1 ... 10000
Solid- / Hollow Shaft
Hollow 6 ... 15 mm, Solid 6 ... 12 mm
Protection case
IP40 / IP50 / IP64 / IP67
Interface
Push-pull, Push-pull complementary, RS422
Approval
UL, CE
Features
up to 10,000 pulses
-25°C to +85°C
max. 10,000 rpm
up to IP67
Aluminium housing
Rotary_encoders/Incremental_rotary_encoders/ICURO RI76 Incremental Encoder
Diameter
76 mm
Resolution
Number of Pulses: 20 ... 10000
Solid- / Hollow Shaft
Hollow 15 ... 42 mm
Protection case
IP50 / IP64
Interface
Push-pull, Push-pull complementary, RS422
Approval
UL, CE
Features
up to 10,000 pulses
Hollow shaft with Ø up to 42 mm
IP64
Rotary_encoders/Incremental_rotary_encoders/ICURO RI64 Incremental Encoder
Diameter
63 mm
Resolution
Number of Pulses: 1000 ... 4096
Solid- / Hollow Shaft
Hollow 10 ... 16 mm
Protection case
IP64 / IP67
Interface
Push-pull, Push-pull complementary, RS422
Approval
CE
Features
up to 4096 pulses
Insulated shafts
Hollow shaft with Ø up to 16 mm
IP67
Rotary_encoders/Incremental_rotary_encoders/ICURO RI36 Incremental Encoder
Diameter
36 mm
Resolution
Number of Pulses: 5 ... 3600
Solid- / Hollow Shaft
Hollow 4 ... 10 mm, Solid 4 ... 6,35 mm
Protection case
IP50 / IP64
Interface
Push-pull, RS422, and 2 more
Approval
UL, CE
Features
up to 3600 pulses
-10°C to +70°C
10,000 rpm
IP64
pulse frequency up to 300 KHz
Rotary_encoders/Incremental_rotary_encoders/ICURO RI59 Incremental Encoder
Diameter
58 mm
Resolution
Number of Pulses: 2 ... 10000
Solid- / Hollow Shaft
Solid 9,52 ... 10 mm
Protection case
IP67
Interface
Push-pull, Push-pull complementary, RS422
Approval
UL, CE
Features
up to 10,000 pulses
-25°C to +85°C
max. 10,000 rpm
up to IP67
Aluminium housing
Rotary_encoders/Incremental_rotary_encoders/ICURO RX70 Incremental Encoder
Diameter
70 mm
Resolution
Number of Pulses: 1 ... 10000
Solid- / Hollow Shaft
Solid 10 mm
Protection case
IP64 / IP67
Interface
Push-pull, Push-pull complementary, RS422
Approval
CE, ATEX, IECEx
Features
ATEX certified
IECEx certified
up to 10,000 pulses
IP67
Rotary_encoders/Incremental_rotary_encoders/ICURO RX71 Incremental Encoder
Diameter
70 mm
Resolution
Number of Pulses: 2 ... 10000
Solid- / Hollow Shaft
Solid 10 mm
Protection case
IP64 / IP67
Interface
Push-pull, Push-pull complementary, RS422
Approval
CE, ATEX, IECEx
Features
ATEX certified
IECEx certified
up to 10,000 pulses
IP67
Rotary_encoders/Incremental_rotary_encoders/HD20 Incremental
Diameter
51 mm
Resolution
Number of Pulses: 1 ... 3600
Solid- / Hollow Shaft
Solid 10 mm
Protection case
IP67
Interface
Open Collector NPN, Push-pull
Approval
CE, ATEX, CSA
Features
up to 3600 pulses
-40°C to +100°C
6,000 rpm
IP67
NEMA 4X
ATEX variants
Rotary_encoders/Incremental_rotary_encoders/HD25 Incremental
Diameter
67 mm
Resolution
Number of Pulses: 1 ... 5000
Solid- / Hollow Shaft
Solid 10 ... 12 mm
Protection case
IP67
Interface
Differential Line Driver, and 2 more
Approval
CE, ATEX, CSA
Features
up to 5000 pulses
-40°C to +100°C
6,000 rpm
IP67
NEMA 4X
ATEX variants
Rotary_encoders/Incremental_rotary_encoders/HSD25 Incremental
Diameter
58,9 mm
Resolution
Number of Pulses: 1 ... 3600
Solid- / Hollow Shaft
Hollow 6 ... 19 mm
Protection case
IP67
Interface
Differential Line Driver, and 2 more
Approval
CE
Features
Shaft diameter up to 25.4 mm
-40°C to +100°C
IP67, NEMA 4X
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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.

Incremental Encoder by Hengstler


ICURO RI58 Incremental Encoder