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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Omschrijving Prijs 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-stocknr. 265-1723
FabrikantnummerEC16B2410408
FabrikantAlps Alpine
1,26 €
Each
Aantal stuks
24 Flat 6 mm Incremental - Through Hole 25mm - - 1.2 mm, 2 x 2.1 mm 0.5mA
RS-stocknr. 172-8066
FabrikantnummerEC16B2410408
FabrikantAlps Alpine
1,343 €
Each (In a Tray of 60)
Aantal stuks
24 Flat 6 mm Incremental - Through Hole 25mm - - 1.2 mm, 2 x 2.1 mm -
RS-stocknr. 172-6320
FabrikantnummerEC16B242040R
FabrikantAlps Alpine
1,167 €
Each (In a Tray of 60)
Aantal stuks
24 Flat 6 mm Incremental - Through Hole 25mm - - 1.2 mm, 2 x 2.1 mm -
RS-stocknr. 265-1739
FabrikantnummerEC16B242040R
FabrikantAlps Alpine
1,10 €
Each
Aantal stuks
24 Flat 6 mm Incremental - Through Hole 25mm - - 1.2 mm, 2 x 2.1 mm -
RS-stocknr. 789-9490
FabrikantnummerEMS22A50-D28-LT6
FabrikantBourns
54,04 €
Each
Aantal stuks
1024 (Position) Plain 3.17 mm Absolute Digital Square Wave Through Hole 22.23mm Not Indexed 10000rpm 10.67mm -
RS-stocknr. 167-5430
FabrikantnummerEMS22A50-D28-LT6
FabrikantBourns
38,443 €
Each (In a Box of 42)
Aantal stuks
1024 (Position) Plain 3.17 mm Absolute Digital Square Wave Through Hole 22.23mm Not Indexed 10000rpm 10.67mm -
RS-stocknr. 729-5564
FabrikantnummerEC11B15242AF
FabrikantAlps Alpine
5,37 €
Each
Aantal stuks
15 Flat 6 mm Incremental Digital Square Wave Through Hole 20mm Not Indexed - 1 mm, 2.1 x 1.8 mm -
RS-stocknr. 172-8134
FabrikantnummerEC11B15242AF
FabrikantAlps Alpine
4,543 €
Each (In a Tray of 70)
Aantal stuks
15 Flat 6 mm Incremental Digital Square Wave Through Hole 20mm Not Indexed - 1 mm, 2.1 x 1.8 mm -
RS-stocknr. 781-6830
FabrikantnummerPEC11R-4220K-S0024
FabrikantBourns
1,73 €
Each
Aantal stuks
24 Knurl 6 mm Incremental Digital Square Wave Through Hole 20mm - 60rpm 1mm -
RS-stocknr. 167-5385
FabrikantnummerPEC11R-4220K-S0024
FabrikantBourns
1,235 €
Each (In a Bag of 75)
Aantal stuks
24 Knurl 6 mm Incremental Digital Square Wave Through Hole 20mm - 60rpm 1mm -
RS-stocknr. 737-7767
FabrikantnummerPEC11R-4220F-S0024
FabrikantBourns
1,48 €
Each
Aantal stuks
24 Flat 6 mm Incremental Digital Square Wave Through Hole 20mm Not Indexed 60rpm 1 mm, 2.6 x 1.8 mm -
RS-stocknr. 167-4659
FabrikantnummerPEC11R-4220F-S0024
FabrikantBourns
1,049 €
Each (In a Bag of 75)
Aantal stuks
24 Flat 6 mm Incremental Digital Square Wave Through Hole 20mm Not Indexed 60rpm 1 mm, 2.6 x 1.8 mm -
RS-stocknr. 172-6422
FabrikantnummerEC11EBB24C03
FabrikantAlps Alpine
12,424 €
Each (In a Tray of 70)
Aantal stuks
15 Flat (Inner Shaft), Slot (Outer Shaft) 3.5 (Inner Shaft) mm, 6 (Outer Shaft) mm Incremental Digital Square Wave Through Hole 25mm Not Indexed - 1 mm, 2.6 x 1.5 mm -
RS-stocknr. 172-7688
FabrikantnummerSRGAV80601
FabrikantAlps Alpine
2,158 €
Each (In a Tray of 84)
Aantal stuks
8 (Positions) Hollow 5 mm Absolute Gray Code Through Hole - Not Indexed - 0.9 mm, 1.5 mm, 1.55 mm -
RS-stocknr. 729-5895
FabrikantnummerSRGAV80601
FabrikantAlps Alpine
2,31 €
Each
Aantal stuks
8 (Positions) Hollow 5 mm Absolute Gray Code Through Hole - Not Indexed - 0.9 mm, 1.5 mm, 1.55 mm -
RS-stocknr. 729-5703
FabrikantnummerEC11EBB24C03
FabrikantAlps Alpine
13,54 €
Each
Aantal stuks
15 Flat (Inner Shaft), Slot (Outer Shaft) 3.5 (Inner Shaft) mm, 6 (Outer Shaft) mm Incremental Digital Square Wave Through Hole 25mm Not Indexed - 1 mm, 2.6 x 1.5 mm -
RS-stocknr. 172-8123
FabrikantnummerEC11B152420G
FabrikantAlps Alpine
3,279 €
Each (In a Tray of 70)
Aantal stuks
15 Slot - Incremental Digital Square Wave Through Hole 25mm - - 1 mm, 2.1 x 1.8 mm -
RS-stocknr. 789-9658
FabrikantnummerPEC12R-4217F-S0012
FabrikantBourns
0,98 €
Each
Aantal stuks
12 Flat 6 mm Incremental Digital Square Wave Through Hole 17.5mm Not Indexed 100rpm 1 mm, 2 x 2.1 mm -
RS-stocknr. 263-2930
FabrikantnummerEC11B152420G
FabrikantAlps Alpine
3,74 €
Each
Aantal stuks
15 Slot - Incremental Digital Square Wave Through Hole 25mm - - 1 mm, 2.1 x 1.8 mm -
RS-stocknr. 172-7597
FabrikantnummerEC12E24404A8
FabrikantAlps Alpine
0,797 €
Each (In a Tray of 120)
Aantal stuks
24 Flat 6 mm Incremental Digital Square Wave Through Hole 20mm Not Indexed - 1 mm, 2.1 x 2 mm -
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