Mechanical Rotary Encoders

Mechanical rotary encoders, also called shaft encoders, are electro-mechanical devices that convert the angular motions (movement around fixed points) of rotary shafts into either analogue or digital signals.

What are mechanical rotary encoders used for?

Applications that require precision shaft rotation (movement around a specific point) make use of mechanical rotary encoders.

These include industrial control machinery in factories, rotating radar platforms in satellite structures or computer input devices like trackballs and mice.


Types of mechanical rotary encoders

Absolute encoders:

  • have tracking functions to determine specific shaft positioning points in industrial equipment like CNC machines, lathes and bore machines.
  • maintain positioning data even when power is cut from the system. When the system is switched on again it begins operating from the point where it stopped previously.


Incremental (relative) encoders:

  • record deviations in shaft position points over certain time frames. With each new time frame after power is cut and switched on again the encoder starts recording from a predetermined reference and measures the distance between the previous point and the current point.

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Beskrivning Pris Pulses Per Revolution Shaft Style Shaft Diameter Encoder Reading Encoder Signal Mounting Type Shaft Length Index Output Maximum Operating Speed Mounting Hole Diameter Current Rating
RS-artikelnummer 729-5804
Tillv. art.nrEC12E24204A9
VarumärkeAlps Alpine
10,55 kr
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24 Flat 6 mm Incremental Digital Square Wave Through Hole 25mm Not Indexed - 1 mm, 2.1 x 2 mm -
RS-artikelnummer 789-9554
Tillv. art.nrPEC11R-4220K-N0024
VarumärkeBourns
13,13 kr
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24 Knurl 6 mm Incremental Digital Square Wave Through Hole 20mm Not Indexed 60rpm 1 mm, 2.6 x 1.8 mm -
RS-artikelnummer 729-5722
Tillv. art.nrEC11J1524413
VarumärkeAlps Alpine
38,05 kr
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15 Flat 5.975 mm Incremental Digital Square Wave Surface Mount 20mm Not Indexed - 1.6 x 1.9 mm, 2.1 mm -
RS-artikelnummer 663-3233
Tillv. art.nrDPL12SV2424A21F3
VarumärkeTE Connectivity
55,73 kr
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24 Flat 6.8 mm Incremental Digital Square Wave Through Hole 21mm Not Indexed 60rpm 1 mm, 1.1 mm -
RS-artikelnummer 729-5684
Tillv. art.nrEC1110120201
VarumärkeAlps Alpine
160,27 kr
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- Flat 6 mm Incremental Digital Square Wave Through Hole 20mm Not Indexed - 1 mm, 2.6 x 1.5 mm -
RS-artikelnummer 168-0810
Tillv. art.nrDPL12SV2424A25K1
VarumärkeTE Connectivity
30,692 kr
Each (In a Box of 250)
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24 Knurl 6.8 mm Incremental Digital Square Wave Through Hole 25mm Not Indexed 60rpm 1 mm, 1.1 mm -
RS-artikelnummer 623-4136
Tillv. art.nrEC11B202440M
VarumärkeAlps Alpine
32,16 kr
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20 Flat - - - Through Hole 20mm Not Indexed - - -
RS-artikelnummer 663-3182
Tillv. art.nrDPL12V2424A24KG
VarumärkeTE Connectivity
22,98 kr
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24 Knurl 6 mm Incremental Digital Square Wave Through Hole 24mm Not Indexed 60rpm 1.1mm -
RS-artikelnummer 167-4651
Tillv. art.nrPEC11R-4215K-S0024
VarumärkeBourns
10,741 kr
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24 Knurl 6 mm Incremental Digital Square Wave Through Hole 15mm Not Indexed 60rpm 1 mm, 2.6 x 1.8 mm -
RS-artikelnummer 789-9624
Tillv. art.nrPEC12R-4020F-S0012
VarumärkeBourns
5,36 kr
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12 Flat 6 mm Incremental Digital Square Wave Through Hole 20mm Not Indexed 100rpm 1 mm, 2 x 2.1 mm -
RS-artikelnummer 263-2839
Tillv. art.nrECW0J-B24-AC0006L
VarumärkeBourns
40,33 kr
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6 Plain with Slot 6.35 mm Incremental Digital Square Wave Panel Mount 19mm Not Indexed 120rpm 9mm -
RS-artikelnummer 729-5842
Tillv. art.nrEC12E2430803
VarumärkeAlps Alpine
5,09 kr
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24 Flat 6 mm Incremental Digital Square Wave Through Hole 25mm Not Indexed - 1 mm, 2.1 x 2 mm -
RS-artikelnummer 168-0822
Tillv. art.nrDPL12V2424A20FR
VarumärkeTE Connectivity
22,449 kr
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24 Flat 6 mm Incremental Digital Square Wave Through Hole 20mm Not Indexed 60rpm 1.1mm -
RS-artikelnummer 167-5394
Tillv. art.nrPEC11R-4220K-N0024
VarumärkeBourns
9,431 kr
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24 Knurl 6 mm Incremental Digital Square Wave Through Hole 20mm Not Indexed 60rpm 1 mm, 2.6 x 1.8 mm -
RS-artikelnummer 729-5561
Tillv. art.nrEC11E15204A3
VarumärkeAlps Alpine
26,26 kr
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15 Flat 6 mm Incremental Digital Square Wave Through Hole 20mm Not Indexed - 1 mm, 2.6 x 1.5 mm -
RS-artikelnummer 789-9614
Tillv. art.nrPEC12R-2225F-S0024
VarumärkeBourns
10,86 kr
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24 Flat 6 mm Incremental Digital Square Wave Through Hole 14mm Not Indexed 100rpm 1 mm, 2 x 2.1 mm -
RS-artikelnummer 185-4446
Tillv. art.nr482020514001
VarumärkeWurth Elektronik
36,705 kr
Each (In a Pack of 2)
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20 - 6 mm Incremental - Through Hole 20mm - - - 10mA
RS-artikelnummer 167-5400
Tillv. art.nrPEC12R-4220F-S0012
VarumärkeBourns
7,949 kr
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12 Flat 6 mm Incremental Digital Square Wave Through Hole 20mm Not Indexed 100rpm 1 mm, 2 x 2.1 mm -
RS-artikelnummer 663-3195
Tillv. art.nrDPL12V2424A24KB
VarumärkeTE Connectivity
21,61 kr
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24 Knurl 6 mm Incremental Digital Square Wave Through Hole 24mm Not Indexed 60rpm 1.1mm -
RS-artikelnummer 169-1876
Tillv. art.nrRAME027R10712AB
VarumärkeVishay
4 083,51 kr
1 Box of 1
Låda(or)
- Plain 3 mm Absolute - Panel Mount 18.9mm Not Indexed - - 20mA
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