Incremental encoder

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

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  • Tel.: +49 / 7424 - 89 - 0
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  • Hengstler GmbH
    Uhlandstr. 49
    78554 Aldingen
  • Tel. +49 / 7424 - 89 -286
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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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Incremental Encoder - ICURO RI58

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

ICURO RI76 Incremental Encoder

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

ICURO RI64 Incremental Encoder

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

ICURO RI36 Incremental Encoder

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

ICURO RI59 Incremental Encoder

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

ICURO RX70 Incremental Encoder

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

ICURO RX71 Incremental Encoder

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

HD20 Incremental

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

HD25 Incremental

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

HS35R Incremental

Rotary_encoders/Incremental_rotary_encoders/HS35R Incremental
Diameter
88,9 mm
Resolution
Number of Pulses: 1 ... 5000
Solid- / Hollow Shaft
Hollow 8 ... 28 mm
Protection case
IP67
Interface
Differential Line Driver, and 2 more
Approval
CE
Features
Rugged Design
Unbreakable Code Disc up to 5000PPR

HSD25 Incremental

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

HSD37 Incremental

Rotary_encoders/Incremental_rotary_encoders/HSD37 Incremental
Diameter
95 mm
Resolution
Number of Pulses: 15 ... 5000
Solid- / Hollow Shaft
Hollow 6 ... 24 mm
Protection case
IP67
Interface
Differential Line Driver, and 2 more
Approval
CE
Features
-40°C to +100°C
IP67, NEMA 4X
Aluminium or stainless steel housing

HSD38 Incremental

Rotary_encoders/Incremental_rotary_encoders/HSD38 Incremental
Diameter
96,5 mm
Resolution
Number of Pulses: 15 ... 5000
Solid- / Hollow Shaft
Hollow 12 ... 20 mm
Protection case
IP67
Interface
Differential Line Driver, and 2 more
Approval
CE
Features
-40°C to +100°C
IP67, NEMA 4X
Aluminium housing

ISD25 Incremental Encoder

Rotary_encoders/Incremental_rotary_encoders/ISD25 Incremental Encoder
Diameter
58 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, ATEX, CSA
Features
-40°C bis +100°C
IP67, NEMA 4X
Nickel plated or stainless steel
ATEX approval

ISD37 Incremental Encoder

Rotary_encoders/Incremental_rotary_encoders/ISD37 Incremental Encoder
Diameter
95,3 mm
Resolution
Number of Pulses: 15 ... 5000
Solid- / Hollow Shaft
Hollow 6 ... 25 mm
Protection case
IP67
Interface
Differential Line Driver, and 2 more
Approval
CE, ATEX, CSA
Features
-40°C bis +100°C
IP67, NEMA 4X
Aluminium or stainless steel
ATEX approval

ICURO RI30 Incremental Encoder

Rotary_encoders/Incremental_rotary_encoders/ICURO RI30 Incremental Encoder
Diameter
30 mm
Resolution
Number of Pulses: 5 ... 1500
Solid- / Hollow Shaft
Solid 5 mm
Protection case
IP50 / IP64
Interface
Push-pull, RS422
Approval
UL, CE
Features
-10°C to +70°C
10,000 rpm
IP64
pulse frequency up to 300 KHz

ICURO RI32 Incremental Encoder

Rotary_encoders/Incremental_rotary_encoders/ICURO RI32 Incremental Encoder
Diameter
30 mm
Resolution
Number of Pulses: 5 ... 1500
Solid- / Hollow Shaft
Solid 5 ... 6 mm
Protection case
IP50
Interface
Push-pull, RS422
Approval
UL
Features
up to 1500 pulses
-10°C to +60°C
6,000 rpm
IP50
Plastic housing

ICURO RI38 Incremental Encoder

Rotary_encoders/Incremental_rotary_encoders/ICURO RI38 Incremental Encoder
Diameter
39 mm
Resolution
Number of Pulses: 5 ... 1024
Solid- / Hollow Shaft
Solid 6 mm
Protection case
IP50
Interface
Push-pull, RS422
Approval
UL
Features
up to 1024 pulses
-10°C to +60°C
10,000 rpm
IP40
Plastic housing

ICURO RI41 Incremental Encoder

Rotary_encoders/Incremental_rotary_encoders/ICURO RI41 Incremental Encoder
Diameter
40 mm
Resolution
Number of Pulses: 5 ... 3600
Solid- / Hollow Shaft
Solid 6 mm
Protection case
IP50
Interface
Push-pull, RS422, and 2 more
Approval
UL, CE
Features
up to 3600 pulses
-10°C to +70°C
10,000 rpm
IP54
Aluminium housing

ICURO RI42 Incremental Encoder

Rotary_encoders/Incremental_rotary_encoders/ICURO RI42 Incremental Encoder
Diameter
40 mm
Resolution
Number of Pulses: 5 ... 1024
Solid- / Hollow Shaft
Solid 6 mm
Protection case
IP64
Interface
Push-pull, RS422, and 2 more
Approval
UL
Features
up to 1024 pulses
0°C to +60°C
10,000 rpm
IP64
Aluminium housing

HSD44T Incremental

Rotary_encoders/Incremental_rotary_encoders/HSD44T Incremental
Diameter
112 mm
Resolution
Number of Pulses: 1024
Solid- / Hollow Shaft
Hollow 16 mm
Protection case
NEMA 6
Interface
Differential Line Driver
Approval
CE
Features
-40°C to +100°C
IP67, NEMA 6
aluminium housing
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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