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. 167-4773
Mfr. Part No.ENA1J-B28-L00100L
BrandBourns
R 608.98
Each (In a Tray of 42)
units
100 Optical 3000rpm Quadrature End - 5 V dc 2 Bit - IP40 - 47.05mm 21.21mm 15.88mm
RS stock no. 265-2928
Mfr. Part No.EC11B152442D
R 84.55
Each
units
- - - - - - - - - - - - - -
RS stock no. 252-3915
Mfr. Part No.EC11B152442D
R 81.018
Each (In a Pack of 5)
units
15 Incremental - Push Pull 6 mm Shaft 6mm 5 V dc - - - - 31.6mm 13.75mm 11.7mm
RS stock no. 167-4406
Mfr. Part No.ECW1J-B24-BC0024L
BrandBourns
R 71.776
Each (In a Tray of 45)
units
24 Incremental 120rpm Quadrature Solid 9mm - 2 Bit - IP40 - 27.51mm 28.49mm 23.37mm
RS stock no. 692-8614
Mfr. Part No.ECW1J-B24-BC0024L
BrandBourns
R 72.69
Each
units
24 Incremental 120rpm Quadrature Solid 9mm - 2 bit - IP40 - 27.51mm 28.49mm 23.37mm
RS stock no. 447-6209
Mfr. Part No.D5.3501.A111.0000
BrandKubler
R 7,581.84
Each
units
- Linear Measuring - Analogue - - 15 → 28 V dc - - - - 40mm 55mm 40mm
RS stock no. 172-7679
Mfr. Part No.EC11B152442D
R 57.016
Each (In a Tray of 100)
units
- - - - - - - - - - - - - -
RS stock no. 692-8623
Mfr. Part No.ENA1J-B28-L00100L
BrandBourns
R 783.98
Each
units
100 Optical 3000rpm Quadrature End - 5 V dc 2 bit - IP40 - 47.05mm 21.21mm 15.88mm
RS stock no. 291-4440
Mfr. Part No.RS0-532-318
BrandHengstler
R 6,515.88
Each
units
2500 Incremental 6000rpm Push Pull Hollow 12mm 10 → 30 V dc - - IP64, IP65 - 41.5mm - -
RS stock no. 492-9157
Mfr. Part No.ARS60-A4A08192
BrandSick
R 9,796.50
Each
units
8192 Absolute 10000rpm Gray, SSI Solid 10mm 10 → 32 V dc - 8192Steps IP64, IP65, IP66 SSI-Gray 78.5mm - -
RS stock no. 498-1818
Mfr. Part No.BDK 16 24K 360 L5 5
BrandBaumer
R 3,832.29
Each
units
360 Optical 6000rpm HTL/Push Pull Solid shaft 5mm 10 → 30 V dc - - IP64 - - 30 Dia.mm -
RS stock no. 388-5630
Mfr. Part No.WDG58B-4096-ABN-I05-K3
R 4,025.28
Each
units
4096 Incremental 8000rpm TTL Inverted Solid - 4.75 → 5.5 V dc - - IP65, IP67 - 83mm - -
RS stock no. 260-3897
Mfr. Part No.RS0-550-169
BrandHengstler
R 4,095.63
Each
units
2500 Incremental 10000rpm Push Pull - - 5 V dc - - IP64, IP65, IP67 - 57.5mm - -
RS stock no. 818-8836
Mfr. Part No.HEDS-5140#A06
BrandBroadcom
R 297.05
Each
units
- Optical 30000rpm - Hollow 1/4in - 500 CPR 500Steps - - 5.98mm 25.4mm -
RS stock no. 178-3120
Mfr. Part No.HEDS-5540#A12
BrandBroadcom
R 631.84
Each (In a Tray of 25)
units
- Incremental 30000rpm Digital Round - 4.5 → 5.5 V dc 500 CPR 500Steps - - 18.3mm 41.1mm 30mm
RS stock no. 447-6186
Mfr. Part No.D5.3501.A331.0000
BrandKubler
R 5,702.34
Each
units
- Linear Measuring - Analogue - - - - - - - 40mm 55mm 40mm
RS stock no. 918-9060
Mfr. Part No.8.KIS40.1342.0360
BrandKubler
R 2,057.68
Each
units
360 Incremental - Push Pull Solid 6mm 10 → 30 V dc - - IP64 - - 40mm 61.3mm
RS stock no. 178-3143
Mfr. Part No.HEDS-5140#A06
BrandBroadcom
R 242.038
Each (In a Tray of 50)
units
- Optical 30000rpm - Hollow 1/4in - 500 CPR 500Steps - - 5.98mm 25.4mm -
RS stock no. 291-4226
Mfr. Part No.RS38-O/100EQ.11KB
BrandHengstler
R 2,525.94
Each
units
100 Incremental 10000rpm Push Pull - - 10 → 30 V dc - - IP40 - 46.5mm - -
RS stock no. 499-7582
Mfr. Part No.BDK 16.05A.0500-5-4
BrandBaumer
R 5,598.49
Each
units
500 Optical 12000rpm RS422, TTL Solid shaft 5mm 5 V dc - - IP42 - - 30 Dia.mm -