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 781-6830
製造零件編號PEC11R-4220K-S0024
BrandBourns
TWD50.00
單位
24 Knurl 6 mm Incremental Digital Square Wave Through Hole 20mm - 60rpm 1mm -
RS庫存編號 172-8305
製造零件編號DPL12VN24A24KR
TWD126.80
個 (以毎盒:1000)
單位
24 Knurl 6 mm Incremental Digital Square Wave Through Hole 24mm Not Indexed 60rpm 1.1mm -
RS庫存編號 136-1847
製造零件編號DPL12SV2424A21F3
TWD161.80
個 (以毎盒:1000)
單位
24 Flat 6.8 mm Incremental Digital Square Wave Through Hole 21mm Not Indexed 60rpm 1 mm, 1.1 mm -
RS庫存編號 167-5091
製造零件編號PEC12R-2230F-S0024
BrandBourns
TWD28.10
個 (以毎袋:75)
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 172-6302
製造零件編號EC12E1220406
TWD37.30
Each (In a Tray of 120)
單位
12 Flat 6 mm Incremental Digital Square Wave Through Hole 20mm Not Indexed - 1 mm, 2.1 x 2 mm -
RS庫存編號 729-5918
製造零件編號SRGP300100
TWD86.00
單位
9 Hollow 7.6 mm Incremental Digital Square Wave Surface Mount - Not Indexed - 1.6mm -
RS庫存編號 2509637327
製造零件編號702-01-16
TWD252.00
單位
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RS庫存編號 2509637355
製造零件編號703-10-00
TWD201.00
單位
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RS庫存編號 2509638780
製造零件編號PEC11-4125F-N0018
BrandBourns
TWD49.00
單位
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