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 21 - 40 of 272 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. 729-5895
Mfr. Part No.SRGAV80601
HK$35.40
Each
units
8 (Positions) Hollow 5 mm Absolute Gray Code Through Hole - Not Indexed - 0.9 mm, 1.5 mm, 1.55 mm -
RS Stock No. 172-8047
Mfr. Part No.EC12E2420404
HK$4.93
Each (In a Tray of 120)
units
24 Flat - - - Through Hole 15mm Not Indexed - - -
RS Stock No. 172-6422
Mfr. Part No.EC11EBB24C03
HK$106.79
Each (In a Tray of 70)
units
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 Stock No. 729-5527
Mfr. Part No.EC05E1220203
HK$14.90
Each
units
12 Hollow 2 mm Incremental - Bracket Mount, Surface Mount - Not Indexed - 1.5mm -
RS Stock No. 172-6281
Mfr. Part No.EC10E1220505
HK$3.80
Each (In a Bag of 400)
units
12 Hollow 3.6 mm Incremental Digital Square Wave Through Hole - Not Indexed - 1 mm, 2.1 x 1.8 mm -
RS Stock No. 729-5703
Mfr. Part No.EC11EBB24C03
HK$125.53
Each
units
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 Stock No. 623-4221
Mfr. Part No.EC12E2420404
HK$14.00
Each
units
24 Flat - - - Through Hole 15mm Not Indexed - - -
RS Stock No. 729-5545
Mfr. Part No.EC10E1220505
HK$4.62
Each
units
12 Hollow 3.6 mm Incremental Digital Square Wave Through Hole - Not Indexed - 1 mm, 2.1 x 1.8 mm -
RS Stock No. 265-1723
Mfr. Part No.EC16B2410408
HK$21.91
Each
units
24 Flat 6 mm Incremental - Through Hole 25mm - - 1.2 mm, 2 x 2.1 mm 0.5mA
RS Stock No. 172-7688
Mfr. Part No.SRGAV80601
HK$26.32
Each (In a Tray of 84)
units
8 (Positions) Hollow 5 mm Absolute Gray Code Through Hole - Not Indexed - 0.9 mm, 1.5 mm, 1.55 mm -
RS Stock No. 172-8112
Mfr. Part No.EC11E18244AU
HK$16.10
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. 714-0234
Mfr. Part No.AEAT-6010-A06
BrandBroadcom
HK$186.53
Each
units
- Plain 6 mm Absolute - Screw Mount 8.5mm Not Indexed 12000rpm 0.13mm -
RS Stock No. 623-4287
Mfr. Part No.EM11B16140A4
HK$220.50
Each
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. 172-8133
Mfr. Part No.SRGAR10100
HK$38.84
Each (On a Tape of 300)
units
13 (Positions) Hollow 5 mm Absolute Gray Code Through Hole - Not Indexed - 1.55 mm, 1.6 x 2 mm, 2.1 mm -
RS Stock No. 167-5088
Mfr. Part No.PEC11R-4020F-N0012
BrandBourns
HK$10.95
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. 729-5583
Mfr. Part No.EC11E153440D
HK$28.24
Each
units
15 Flat 6 mm Incremental Digital Square Wave Through Hole 20mm Not Indexed - 1 mm, 2.6 x 1.5 mm -
RS Stock No. 729-5595
Mfr. Part No.EC11E183440C
HK$42.65
Each
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. 172-8120
Mfr. Part No.EC11E1834403
HK$26.485
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. 729-5592
Mfr. Part No.EC11E18244AU
HK$24.30
Each
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. 729-5637
Mfr. Part No.EC11K1525401
HK$31.59
Each
units
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 -
Related Products
A range of real-time clock products from Maxim ...
Description:
A range of real-time clock products from Maxim incorporating non-volatile RAM memory for data retention. The clock/calendar functions provide seconds, minutes, hours, day, date, month, and year information. The clocks generally operate in either the 12 or 24-hour format with ...
A range of real-time clock products from Maxim ...
Description:
A range of real-time clock products from Maxim incorporating non-volatile RAM memory for data retention. The clock/calendar functions provide seconds, minutes, hours, day, date, month, and year information. The clocks generally operate in either the 12 or 24-hour format with ...
The Microchip Technology MCP79401 8-pin, SOIC package, surface ...
Description:
The Microchip Technology MCP79401 8-pin, SOIC package, surface mount device has a voltage rating between 1.8V and 5.5V. It is a general-purpose I2CTM compatible real-time clock/calendar (RTCC) which is integrated with memory and advanced features normally found in higher priced ...
The MCP7940N series of low-power Real-Time Clocks (RTC) ...
Description:
The MCP7940N series of low-power Real-Time Clocks (RTC) uses digital timing compensation for an accurate clock/calendar, a programmable output control for versatility, and a power sense circuit that automatically switches to the backup supply. Using a low-cost 32.768 kHz crystal, ...