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 Pulses Per Revolution Encoder Technology 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. 818-2977
Mfr. Part No.EIL580P-TT12.5FF.01024.B
BrandBaumer
SGD485.95
Each
units
1 → 65536 Optical 6000rpm TTL/HTL Hollow shaft 12mm 4.75 → 30 V dc - - IP65 - - 58 Dia.mm -
RS Stock No. 818-8833
Mfr. Part No.HEDL-5640#A13
BrandBroadcom
SGD74.69
Each
units
500 Incremental 30000rpm Push Pull Hollow 8mm 4.5 → 5.5 V dc 500 CPR 500Steps - - 18.3mm 41.1mm 30mm
RS Stock No. 388-5646
Mfr. Part No.WDG58B-2500-ABN-I05-K3
SGD329.05
Each
units
2500 Incremental 8000rpm TTL Inverted - - 4.75 → 5.5 V dc - - IP65, IP67 - 83mm - -
RS Stock No. 188-3536
Mfr. Part No.EAM580-SY6.7L4G.13120.A
BrandBaumer
SGD825.61
Each
units
- Magnetic 6000rpm - Solid shaft 6mm 4.5 → 30 V dc MT 12 bit, ST 13 bit - IP67 SSI-Gray - 58mm -
RS Stock No. 291-4305
Mfr. Part No.RS58-O/500EK.42KB
BrandHengstler
SGD330.60
Each
units
500 Incremental 10000rpm Push Pull Solid 10mm 10 → 30 V dc - - IP64, IP65 - 50mm - -
RS Stock No. 167-4554
Mfr. Part No.EM14C0D-E24-L064S
BrandBourns
SGD36.57
Each (In a Tube of 25)
units
64 Optical 120rpm Quadrature Slotted 1/8in 5 V dc 2 Bit - IP54 - 14.76mm 14.25mm 32.05mm
RS Stock No. 291-4412
Mfr. Part No.0532219
BrandHengstler
SGD542.48
Each
units
360 Incremental 6000rpm Push Pull Hollow 12mm 10 → 30 V dc - 360Steps IP65 - 41.5mm - -
RS Stock No. 167-4682
Mfr. Part No.3315C-001-016L
BrandBourns
SGD3.06
Each (In a Tray of 100)
units
16 Incremental 120rpm Quadrature Solid 1/4in - 2 Bit - IP67 - 9.53mm 9.53mm 17.88mm
RS Stock No. 122-4627
Mfr. Part No.AFM60A-S4NB018X12
BrandSick
SGD958.40
Each
units
262144 Absolute 4096rpm - Solid 10mm 10 → 30 V dc 18 Bit 262144Steps IP65, IP67 PROFINET - 60 Dia.mm 65mm
RS Stock No. 179-9862
Mfr. Part No.XCCPM23121L2
SGD133.86
Each
units
- Incremental - - - - - - - IP65 - - - -
RS Stock No. 388-5501
Mfr. Part No.WDG58B-1024-ABN-G24-K3
SGD338.46
Each
units
1024 Incremental 8000rpm HTL Solid - 10 → 30 V dc - - IP65, IP67 - 83mm - -
RS Stock No. 481-7543
Mfr. Part No.GI356.170R030
BrandBaumer
SGD427.71
Each
units
2500 Optical 10000rpm HTL/Push Pull Solid shaft 6mm 4.75 → 30 V dc - - IP54 - - 58 Dia.mm -
RS Stock No. 481-7357
Mfr. Part No.GI355.070R006
BrandBaumer
SGD427.71
Each
units
200 Optical 10000rpm HTL/Push Pull Solid shaft 10mm 4.75 → 30 V dc - - IP54 - - 58 Dia.mm -
RS Stock No. 666-6883
Mfr. Part No.0541068
BrandHengstler
SGD643.01
Each
units
2048 Absolute 10000rpm Gray, SSI Hollow 8mm 5 V dc 13 bit - IP40 SSI-Gray 23.65mm - -
New
RS Stock No. 200-6334
Mfr. Part No.AS5134-ZSSM
Brandams
SGD9.99
Each (In a Pack of 2)
units
90 ppr, 180 ppr, 360 ppr Absolute 76875rpm Digital - - 4.5 → 5.5 V - - - IO-Link - - -
RS Stock No. 909-3304
Mfr. Part No.ROP520
SGD414.81
Each
units
10000 Incremental 12000rpm HTL, TTL Hollow 12mm 4.5 → 30 V dc 10000 I/U - IP64 IO-Link 64mm 58.5mm 67.7mm
RS Stock No. 481-7458
Mfr. Part No.GI355.070R041
BrandBaumer
SGD441.06
Each
units
100 Optical 10000rpm HTL/Push Pull Solid shaft 10mm 4.75 → 30 V dc - - IP54 - - 58 Dia.mm -
RS Stock No. 173-5551
Mfr. Part No.DPL12HN24A20FB
SGD8.936
Each (In a Box of 500)
units
24 Incremental 60rpm Quadrature Solid 6mm 5 V dc - - - - 27.4mm 13.2mm 12.4mm
New
RS Stock No. 201-3671
Mfr. Part No.AHM36B-BDQC012X12
BrandSick
SGD776.35
Each
units
1-4096 Absolute 4096 X 4096rpm - Blind Hollow - 30 V - - - IO-Link - - -
RS Stock No. 181-4479
Mfr. Part No.PEC16-4220F-N0024
BrandBourns
SGD1.968
Each (In a Pack of 5)
units
24 Incremental - Quadrature Solid 6mm 5 V dc 2 Bit - IP40 - 17.7mm 16mm 31.5mm
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