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.

...
Read more Read less

Filters

Viewing 81 - 100 of 266 products
Results per page
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 Stock No. 789-9513
Mfr. Part No.PEC11R-4020F-N0012
BrandBourns
$1.85
Each
units
12 Flat 6 mm Incremental Digital Square Wave Through Hole 20mm Not Indexed 60rpm 2.6 x 1.8 mm, 1 mm -
RS Stock No. 263-2918
Mfr. Part No.EAW0J-B24-AE0128L
BrandBourns
$11.91
Each
units
128 Plain with Slot 6.35 mm Absolute Digital Bracket Mount 19.05mm Not Indexed 120rpm 9mm -
RS Stock No. 172-8121
Mfr. Part No.EC11E18244A5
$3.98
Each (In a Tray of 120)
units
18 Flat 6 mm Incremental Digital Square Wave Through Hole 20mm Not Indexed - 1 mm, 2.6 x 1.5 mm -
RS Stock No. 161-6779
Mfr. Part No.PEC11R-4225F-N0024
BrandBourns
$1.41
Each (In a Bag of 75)
units
24 Flat 6 mm Incremental Digital Square Wave Through Hole 25mm Not Indexed 60rpm 1 mm, 2.6 x 1.8 mm -
RS Stock No. 167-5400
Mfr. Part No.PEC12R-4220F-S0012
BrandBourns
$1.24
Each (In a Bag of 75)
units
12 Flat 6 mm Incremental Digital Square Wave Through Hole 20mm Not Indexed 100rpm 1 mm, 2 x 2.1 mm -
RS Stock No. 623-4136
Mfr. Part No.EC11B202440M
$11.07
Each
units
20 Flat - - - Through Hole 20mm Not Indexed - - -
RS Stock No. 789-9652
Mfr. Part No.PEC12R-4220F-S0012
BrandBourns
$1.64
Each
units
12 Flat 6 mm Incremental Digital Square Wave Through Hole 20mm Not Indexed 100rpm 1 mm, 2 x 2.1 mm -
RS Stock No. 737-7764
Mfr. Part No.PEC11R-4230F-S0024
BrandBourns
$2.86
Each
units
24 Flat 6 mm Incremental Digital Square Wave Through Hole 30mm Not Indexed 60rpm 2.6 x 1.8 mm, 1 mm -
RS Stock No. 167-4658
Mfr. Part No.PEC11R-4230F-S0024
BrandBourns
$2.17
Each (In a Bag of 75)
units
24 Flat 6 mm Incremental Digital Square Wave Through Hole 30mm Not Indexed 60rpm 1 mm, 2.6 x 1.8 mm -
RS Stock No. 167-5088
Mfr. Part No.PEC11R-4020F-N0012
BrandBourns
$1.92
Each (In a Bag of 75)
units
12 Flat 6 mm Incremental Digital Square Wave Through Hole 20mm Not Indexed 60rpm 1 mm, 2.6 x 1.8 mm -
RS Stock No. 729-5606
Mfr. Part No.EC11E18244A5
$6.30
Each
units
18 Flat 6 mm Incremental Digital Square Wave Through Hole 20mm Not Indexed - 2.6 x 1.5 mm, 1 mm -
RS Stock No. 172-6433
Mfr. Part No.EM11B16140A4
$27.112
Each (In a Tray of 100)
units
16 Flat 6 mm Incremental Digital Square Wave Through Hole 15mm - - 0.7 mm, 1.3 mm, 2.1 x 1.5 mm -
RS Stock No. 729-5851
Mfr. Part No.EC12E2460802
$3.08
Each
units
24 Flat 6 mm Incremental Digital Square Wave Through Hole 30mm Not Indexed - 2.1 x 2 mm, 1 mm -
RS Stock No. 789-9490
Mfr. Part No.EMS22A50-D28-LT6
BrandBourns
$69.02
Each
units
1024 (Position) Plain 3.17 mm Absolute Digital Square Wave Through Hole 22.23mm Not Indexed 10000rpm 10.67mm -
RS Stock No. 172-7678
Mfr. Part No.EC11K1525401
$4.21
Each (In a Tray of 100)
units
15 Flat 5.975 mm Incremental Digital Square Wave Through Hole 20mm Not Indexed - 1.05 mm, 2.1 mm, 1.6 x 1.9 mm, 2.65 x 1.55 mm -
RS Stock No. 737-7751
Mfr. Part No.PEC11R-4220F-N0012
BrandBourns
$2.10
Each
units
12 Flat 6 mm Incremental Digital Square Wave - 20mm Not Indexed 60rpm 7mm -
RS Stock No. 172-6324
Mfr. Part No.EC12E2460802
$1.32
Each (In a Tray of 95)
units
24 Flat 6 mm Incremental Digital Square Wave Through Hole 30mm Not Indexed - 1 mm, 2.1 x 2 mm -
RS Stock No. 265-2906
Mfr. Part No.EC11B1520206
$6.50
Each
units
15 Slot - Incremental Digital Square Wave Through Hole 25mm - - 2.1 x 1.8 mm, 1 mm -
RS Stock No. 167-5399
Mfr. Part No.PEC12R-4025F-S0024
BrandBourns
$1.41
Each (In a Bag of 75)
units
24 Flat 6 mm Incremental Digital Square Wave Through Hole 25mm Not Indexed 100rpm 1 mm, 2 x 2.1 mm -
RS Stock No. 789-9649
Mfr. Part No.PEC12R-4025F-S0024
BrandBourns
$1.81
Each
units
24 Flat 6 mm Incremental Digital Square Wave Through Hole 25mm Not Indexed 100rpm 1 mm, 2 x 2.1 mm -
Related Products
Pro Audio 12 mm Incremental Encoder with a ...
Description:
Pro Audio 12 mm Incremental Encoder with a momentary push switch option Highly reliable and compact design available in a variety of configurations Applications include level control, tuning and timer settings in:- Audio-visual equipment Consumer electric appliances RadiosMusical instruments Communications ...
Snap-in PCB mountable Knurled or flatted plastic shaft ...
Description:
Snap-in PCB mountable Knurled or flatted plastic shaft types Contacts 100 mΩ max rated at 05mA 5Vdc Optional push switch rated at 10mA 5Vdc Single LED for non switch types and dual LED for switched types Insulation resistance 250 Vac ...
Low profile with high reliability 11mm encoders, suitable ...
Description:
Low profile with high reliability 11mm encoders, suitable for automotive applications, image and sound devices Incremental type 15000 operating cycles Push switch variant (stock No.623-4293)15 pulse 30 detents Rated at max. 10mA 5Vdc min. 1mA 5Vdc Detent Torque 6 +/- ...
Insulated shaft type with a wide variety of ...
Description:
Insulated shaft type with a wide variety of applicationsEC12D series comes with Push-on Switch Typical rating 5Vdc, 05mAOperating life 15,000 cycles (without Detent) 30,000 cycles (with Detent)Operating Temperature ー10 to +70℃ (EC12E) ー40 to +85℃ (EC12D).