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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Description Price 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庫存編號 164-0519
製造零件編號DPL12SVN24A25K2
TWD161.40
個 (以毎盒:1000)
單位
24 Knurl 6.8 mm Incremental Digital Square Wave Through Hole 25mm Not Indexed 60rpm 1 mm, 1.1 mm -
全新
RS庫存編號 215-8849
製造零件編號E69-C04B
BrandOmron
TWD735.00
單位
- - 4 mm - - - - - - - -
RS庫存編號 172-7621
製造零件編號EC12E2430803
TWD61.70
Each (In a Tray of 95)
單位
24 Flat 6 mm Incremental Digital Square Wave Through Hole 25mm Not Indexed - 1 mm, 2.1 x 2 mm -
RS庫存編號 172-6320
製造零件編號EC16B242040R
TWD40.40
Each (In a Tray of 60)
單位
24 Flat 6 mm Incremental - Through Hole 25mm - - 1.2 mm, 2 x 2.1 mm -
RS庫存編號 161-6782
製造零件編號PEC12R-2120F-S0012
BrandBourns
TWD30.50
個 (以毎袋:75)
單位
12 Flat 6 mm Incremental Digital Square Wave Through Hole 9mm Not Indexed 100rpm 1 mm, 2 x 2.1 mm -
RS庫存編號 172-7669
製造零件編號EC11E15244G1
TWD111.90
Each (In a Tray of 120)
單位
15 Flat 6 mm Incremental Digital Square Wave Through Hole 20mm Not Indexed - 1 mm, 2.6 x 1.5 mm -
RS庫存編號 789-9598
製造零件編號PEC12R-2120F-N0012
BrandBourns
TWD31.00
單位
12 Flat 6 mm Incremental Digital Square Wave Through Hole 10mm Not Indexed 100rpm 1 mm, 2 x 2.1 mm -
RS庫存編號 789-9618
製造零件編號PEC12R-2230F-S0024
BrandBourns
TWD40.00
單位
24 Flat 6 mm Incremental Digital Square Wave Through Hole 19mm Not Indexed 100rpm 1 mm, 2 x 2.1 mm -
RS庫存編號 623-4186
製造零件編號EC12E1220401
TWD45.00
單位
12 Flat - - - Through Hole 20mm Not Indexed - - -
RS庫存編號 168-0822
製造零件編號DPL12V2424A20FR
TWD126.80
個 (在毎卷:1000)
單位
24 Flat 6 mm Incremental Digital Square Wave Through Hole 20mm Not Indexed 60rpm 1.1mm -
RS庫存編號 737-7758
製造零件編號PEC11R-4220F-S0012
BrandBourns
TWD57.00
單位
12 Flat 6 mm Incremental Digital Square Wave - 20mm Not Indexed 60rpm 7mm -
RS庫存編號 729-5808
製造零件編號EC12E2420301
TWD78.00
單位
24 Hollow 6 mm Incremental Digital Square Wave Through Hole 8.5mm Not Indexed - 1 mm, 2.1 x 2 mm -
RS庫存編號 167-4657
製造零件編號PEC11R-4225F-S0024
BrandBourns
TWD37.60
個 (以毎袋:75)
單位
24 Flat 6 mm Incremental Digital Square Wave - 25mm Not Indexed 60rpm 7mm -
RS庫存編號 161-6783
製造零件編號PEC12R-2220F-S0024
BrandBourns
TWD27.80
個 (以毎袋:75)
單位
24 Flat 6 mm Incremental Digital Square Wave Through Hole 9mm Not Indexed 100rpm 1 mm, 2 x 2.1 mm -
RS庫存編號 663-3230
製造零件編號DPL12SV2424A25K3
TWD277.00
單位
24 Knurl 6.8 mm Incremental Digital Square Wave Through Hole 25mm Not Indexed 60rpm 1 mm, 1.1 mm -
RS庫存編號 172-8098
製造零件編號EC12E2424407
TWD77.90
Each (In a Tray of 120)
單位
24 Flat - - - Through Hole 14mm Not Indexed - - -
RS庫存編號 189-4750
製造零件編號AEAT-6012-A06
BrandBroadcom
TWD737.70
毎管:280 個
單位
1024 (Positions) - 6 mm Absolute - Screw Mount 8.5mm - 12000rpm 17mm 20mA
RS庫存編號 263-2930
製造零件編號EC11B152420G
TWD155.00
單位
15 Slot - Incremental Digital Square Wave Through Hole 25mm - - 1 mm, 2.1 x 1.8 mm -
RS庫存編號 737-7739
製造零件編號PEC11R-4015F-S0024
BrandBourns
TWD69.00
單位
24 Flat 6 mm Incremental Digital Square Wave Through Hole 15mm Not Indexed 60rpm 1 mm, 2.6 x 1.8 mm -
RS庫存編號 172-8047
製造零件編號EC12E2420404
TWD47.60
Each (In a Tray of 120)
單位
24 Flat - - - Through Hole 15mm Not Indexed - - -