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 178-2944
製造零件編號AEAT-6010-A06
BrandBroadcom
TWD664.10
Each (In a Tray of 280)
單位
- Plain 6 mm Absolute - Screw Mount 8.5mm Not Indexed 12000rpm 0.13mm -
RS庫存編號 714-0234
製造零件編號AEAT-6010-A06
BrandBroadcom
TWD870.00
單位
- Plain 6 mm Absolute - Screw Mount 8.5mm Not Indexed 12000rpm 0.13mm -
RS庫存編號 167-4653
製造零件編號PEC11R-4215F-S0024
BrandBourns
TWD40.40
個 (以毎袋:75)
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 737-7748
製造零件編號PEC11R-4215F-S0024
BrandBourns
TWD50.00
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 623-4120
製造零件編號EC11B2024201
TWD162.00
單位
20 Flat - - - Through Hole 20mm Not Indexed - - -
RS庫存編號 172-7691
製造零件編號EC11B2024201
TWD122.10
Each (In a Tray of 70)
單位
20 Flat - - - Through Hole 20mm Not Indexed - - -
RS庫存編號 167-5390
製造零件編號PEC11R-4115K-S0018
BrandBourns
TWD49.20
個 (以毎袋:75)
單位
18 Knurl 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 789-9523
製造零件編號PEC11R-4115K-S0018
BrandBourns
TWD64.00
單位
18 Knurl 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 729-5637
製造零件編號EC11K1525401
TWD153.00
單位
15 Flat 5.975 mm Incremental Digital Square Wave Through Hole 20mm Not Indexed - 1.05 mm, 1.6 x 1.9 mm, 2.1 mm, 2.65 x 1.55 mm -
RS庫存編號 167-5399
製造零件編號PEC12R-4025F-S0024
BrandBourns
TWD31.40
個 (以毎袋:75)
單位
24 Flat 6 mm Incremental Digital Square Wave Through Hole 25mm Not Indexed 100rpm 1 mm, 2 x 2.1 mm -
RS庫存編號 623-4136
製造零件編號EC11B202440M
TWD213.00
單位
20 Flat - - - Through Hole 20mm Not Indexed - - -
RS庫存編號 729-5536
製造零件編號EC05E1220401
TWD105.00
單位
12 Hollow 2.2 mm Incremental - Bracket Mount, Surface Mount - Not Indexed - 0.62mm -
RS庫存編號 789-9649
製造零件編號PEC12R-4025F-S0024
BrandBourns
TWD45.00
單位
24 Flat 6 mm Incremental Digital Square Wave Through Hole 25mm Not Indexed 100rpm 1 mm, 2 x 2.1 mm -
RS庫存編號 729-5564
製造零件編號EC11B15242AF
TWD169.00
單位
15 Flat 6 mm Incremental Digital Square Wave Through Hole 20mm Not Indexed - 1 mm, 2.1 x 1.8 mm -
RS庫存編號 729-5545
製造零件編號EC10E1220505
TWD29.00
單位
12 Hollow 3.6 mm Incremental Digital Square Wave Through Hole - Not Indexed - 1 mm, 2.1 x 1.8 mm -
RS庫存編號 172-6281
製造零件編號EC10E1220505
TWD20.40
個 (以毎袋:400)
單位
12 Hollow 3.6 mm Incremental Digital Square Wave Through Hole - Not Indexed - 1 mm, 2.1 x 1.8 mm -
RS庫存編號 172-8134
製造零件編號EC11B15242AF
TWD167.90
Each (In a Tray of 70)
單位
15 Flat 6 mm Incremental Digital Square Wave Through Hole 20mm Not Indexed - 1 mm, 2.1 x 1.8 mm -
RS庫存編號 167-5310
製造零件編號PEC12R-4225F-S0024
BrandBourns
TWD30.50
個 (以毎袋:75)
單位
24 Flat 6 mm Incremental Digital Square Wave Through Hole 25mm - 100rpm 1mm -
RS庫存編號 690-6724
製造零件編號26ASD45-01-1-AJS
BrandGrayhill
TWD469.00
單位
8 Flat 3.18 mm Incremental BCD Output - 15.88mm Not Indexed - 12.7mm 10 mA @ 5 V dc
RS庫存編號 167-5382
製造零件編號PEC11R-4215F-S0012
BrandBourns
TWD42.10
個 (以毎袋:75)
單位
12 Flat 6 mm Incremental Digital Square Wave Through Hole 15mm - 60rpm 1mm -