Rotary Encoders

Rotary Encoders are devices that convert a motion into an analogue or digital signal. These devices are electro-mechanical sensors that monitor the position of the shaft or axle and convert it into the signal readable for digital devices. Rotary Encoders are also known as shaft encoders.
Rotary Encoders can be divided into 2 main types:
· Absolute – Digital Absolute encoders produce a unique digital code for each angle of shaft. These type of encoders maintains position information when a system power is off. The position of encoder is available again on applying power. The relationship between the encoder value and the physical position of the controlled machinery is set at assembly, the system does not need to return to a calibration point to maintain position accuracy.
Types of absolute encoders:
o Mechanical
o Optical
o Magnetic
o Capacitive
· Incremental – These encoders accurately records the changes in position of the shaft but does not power up with fixed relation between encoder state and physical position. The point where the counting begins depends on the external device counting system and not the position of the encoder. To provide useful position information, the encoder position must be referenced to the device to which is attached.
Rotary Encoders are commonly used in many applications that require precise shaft unlimited rotation. It means they can be used across industries such as robotics industry, electronic industry, and machinery production but are also very popular parts of many household devices.

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Description Price Encoder Technology Pulses Per Revolution Maximum Revolutions Output Signal Type Shaft Type Shaft Diameter Supply Voltage Resolution Steps Per Revolution IP Rating Interface Overall Height Overall Width Overall Depth
RS Stock No. 691-7705
Mfr. Part No.EM14A0D-C24-L064S
BrandBourns
$42.28
Each
units
Optical 64 120rpm Quadrature Flatted 1/4in 5 V dc 2 bit - IP54 - 14.76mm 14.25mm 32.05mm
RS Stock No. 818-8833
Mfr. Part No.HEDL-5640#A13
BrandBroadcom
$85.02
Each
units
Incremental 500 30000rpm Push Pull Hollow 8mm 4.5 → 5.5 V dc 500 CPR 500Steps - - 18.3mm 41.1mm 30mm
RS Stock No. 291-4210
Mfr. Part No.RS0-529-178
BrandHengstler
$364.01
Each
units
Incremental 50 10000rpm Push Pull - - 10 → 30 V dc - - IP40, IP50 - 44.7mm 39mm 39mm
RS Stock No. 701-4264
Mfr. Part No.DPL12H2424A24KR
$9.83
Each
units
Incremental 24 60rpm Quadrature Solid 6mm 5 V dc - - - - 26.4mm 13.2mm 12.4mm
RS Stock No. 168-0817
Mfr. Part No.DPL12H2424A24KR
$6.519
Each (In a Box of 500)
units
Incremental 24 60rpm Quadrature Solid 6mm 5 V dc - - - - 26.4mm 13.2mm 12.4mm
RS Stock No. 666-6899
Mfr. Part No.AD36/1213EF.0RSCB
BrandHengstler
$1,048.01
Each
units
Absolute 2048 10000rpm Gray, SSI Hollow 8mm 7 → 30 V dc 12 Bit - IP40 SSI-Gray 32.8mm - -
RS Stock No. 447-6186
Mfr. Part No.D5.3501.A331.0000
BrandKubler
$587.06
Each
units
Linear Measuring - - Analogue - - - - - - - 40mm 55mm 40mm
RS Stock No. 265-1717
Mfr. Part No.EC11B152040G
$9.19
Each
units
- - - - - - - - - - - - - -
RS Stock No. 167-8669
Mfr. Part No.ECS78RBA103
BrandVishay
$25.727
Each (In a Box of 20)
units
Linear Measuring - 150rpm - - - - - - - - 30.2mm 22.2 Dia.mm -
RS Stock No. 480-0517
Mfr. Part No.RC58/0012EK.42SGB
BrandHengstler
$622.90
Each
units
Absolute - 10000rpm Gray, SSI Solid 10mm 10 → 30 V dc 12 bit - IP64, IP67 SSI-Gray - - -
RS Stock No. 692-8468
Mfr. Part No.3315C-001-016L
BrandBourns
$4.45
Each
units
Incremental 16 120rpm Quadrature Solid 1/4in - 2 bit - IP67 - 9.53mm 9.53mm 17.88mm
RS Stock No. 441-6106
Mfr. Part No.8.3720.5621.0360
BrandKubler
$261.07
Each
units
Incremental 360 6000rpm Push Pull Hollow 8mm 5 → 30 V dc - - IP65 - 44.5mm - -
RS Stock No. 172-6376
Mfr. Part No.EC11B152040G
$3.335
Each (In a Tray of 100)
units
- - - - - - - - - - - - - -
RS Stock No. 167-4682
Mfr. Part No.3315C-001-016L
BrandBourns
$2.84
Each (In a Tray of 100)
units
Incremental 16 120rpm Quadrature Solid 1/4in - 2 Bit - IP67 - 9.53mm 9.53mm 17.88mm
RS Stock No. 806-8297
Mfr. Part No.ECS78RBA103
BrandVishay
$25.70
Each
units
Linear Measuring - 150rpm - - - - - - - - 30.2mm 22.2 Dia.mm -
RS Stock No. 291-4282
Mfr. Part No.RS0-550-172
BrandHengstler
$400.67
Each
units
Incremental 100 10000rpm Push Pull - - 10 → 30 V dc - - IP64, IP65, IP67 - 57.5mm - -
RS Stock No. 122-4629
Mfr. Part No.AFM60A-BHNB018X12
BrandSick
$855.00
Each
units
Absolute - 4096rpm - Hollow 15mm 10 → 30 V dc 18 Bit 262144Steps IP65, IP67 PROFINET - 60 Dia.mm 71.5mm
RS Stock No. 691-7718
Mfr. Part No.EM14C0D-E24-L064S
BrandBourns
$42.28
Each
units
Optical 64 120rpm Quadrature Slotted 1/8in 5 V dc 2 bit - IP54 - 14.76mm 14.25mm 32.05mm
RS Stock No. 712-5437
Mfr. Part No.DFS60B-BHPA10000
BrandSick
$593.78
Each
units
Incremental 10000 - HTL, TTL Hollow 15mm 5 → 32 V dc - - IP65, IP67 - 45.5mm - -
RS Stock No. 744-5328
Mfr. Part No.E6B2-CWZ6C 2000P/R 2M BY OMS
BrandOmron
$834.23
Each
units
Incremental 2000 6000rpm NPN Open Collector Solid 6mm 5 → 24 V dc - - IP50 - 59mm - -
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