Rotatary Encoders

Light Duty Axial Shaft
Light-duty rotary incremental encoders are cost-effective for small applications and have the following features.

Small body with 38mm diameter and 30mm depth
In-stock models include 100, 360, 500, 1000, or 2500 pulses per revolution (ppr)
Non-stock models include open collector or line driver outputs in 200, 250, 300, 400, 600, 800, 1200, and 2000 pulses per revolution (ppr)
6mm standard shaft
200 KHz maximum response frequency
Available in 5 V line driver or 12-24 VDC models
IP40 Rating (dust proof)

Light Hollow Shaft
Hollow shaft models have a built-in coupling for accurate alignment and long bearing life.

8mm hollow shaft models

Med. Duty Axial Shaft
Medium-duty rotary incremental encoders are the most popular encoders we offer. The product line has the greatest flexibility of choice while maintaining very high quality, all for a very low price.

Small body with 50mm diameter and 35mm depth
In-stock models include 60, 100, 360, 500, 1000, or 2500 pulses per revolution (ppr)
Non-stock models include totem pole or line driver outputs in 3, 4, 5, 10, 30, 40, 50, 120, 200, 240, 250, 300, 400, 480, 600, 720, 1200, and 2000 pulses per revolution (ppr)
8mm standard shaft
Accept source voltages from 5 V to 30 VDC
100 KHz maximum response frequency
IP65 Rating (splash proof)

Med. Duty Hollow Shaft
Hollow shaft models have a built-in coupling for accurate alignment and long bearing life.

8mm hollow shaft models

Heavy Duty
These heavy-duty rotary incremental encoders are the most rugged encoders you can buy. Top-of-the-line Koyo bearings help maintain a service life of 12 billion revolutions.

Rugged body with 78mm diameter and 60mm depth
In-stock models include 100, 200, 360, 500, or 1000 pulses per revolution
Non-stock models include totem pole outputs in 30, 120, 240, 250, 300, 400, 600, 800, 1200, 1500, 1800, 2000, 2500, 3600, and 5000 pulses per revolution
10 mm standard solid shaft
Accept source voltages from 10 V to 30 VDC
100 KHz maximum response frequency
IP65 Rating (splash proof)

Absolute Encoders
An absolute encoder uses gray code to describe each position, so position data is not lost when power is cycled. When power is cycled using an incremental encoder, any positioning information is lost until “home” position is triggered.

Small body with 50mm diameter and 35mm depth
Stock and non-stock models range from 5 bit to 10 bit Gray code outputs
8 mm stainless steel solid shaft
Accept source voltages from 10 V to 26 VDC
20 KHz maximum response frequency
IP65 Rating (splash proof)

Encoder Accessories
Couplings: Metric-to-metric and metric-to-S.A.E. couplings available.
Mounting Brackets: Available for the medium and heavy duty encoders.

Encoders

All optical encoders and rotary encoders feature a reinforced aluminum diecast casing, have an operating temperature range of -10 to +70 degrees C (except for the NA series, whose operating range is -10 to +60 degrees C), and come equipped with a two meter cable exit. Flexible couplings in aluminum and glass reinforced resin and mounting brackets will also be available.

To offer you access to the widest array of Koyo absolute encoder models, in addition to our in-stock rotary optical encoders ready for delivery, we also offer many models designated as "non-stock", meaning their normal delivery is 6-8 weeks for quantities less than 100; larger quantities will require more time.

(1.3Mb) (links) (links)

Light Duty Axial Shaft
Light-duty rotary incremental encoders are cost-effective for small applications and have the following features.

Small body with 38mm diameter and 30mm depth
In-stock models include 100, 360, 500, 1000, or 2500 pulses per revolution (ppr)
Non-stock models include open collector or line driver outputs in 200, 250, 300, 400, 600, 800, 1200, and 2000 pulses per revolution (ppr)
6mm standard shaft
200 KHz maximum response frequency
Available in 5 V line driver or 12-24 VDC models
IP40 Rating (dust proof)

Light Hollow Shaft
Hollow shaft models have a built-in coupling for accurate alignment and long bearing life.

8mm hollow shaft models

Small body with 50mm diameter and 35mm depth
In-stock models include 60, 100, 360, 500, 1000, or 2500 pulses per revolution (ppr)
Non-stock models include totem pole or line driver outputs in 3, 4, 5, 10, 30, 40, 50, 120, 200, 240, 250, 300, 400, 480, 600, 720, 1200, and 2000 pulses per revolution (ppr)
8mm standard shaft
Accept source voltages from 5 V to 30 VDC
100 KHz maximum response frequency
IP65 Rating (splash proof)

Med. Duty Hollow Shaft
Hollow shaft models have a built-in coupling for accurate alignment and long bearing life.

8mm hollow shaft models

Heavy Duty
These heavy-duty rotary incremental encoders are the most rugged encoders you can buy. Top-of-the-line Koyo bearings help maintain a service life of 12 billion revolutions.

Rugged body with 78mm diameter and 60mm depth
In-stock models include 100, 200, 360, 500, or 1000 pulses per revolution
Non-stock models include totem pole outputs in 30, 120, 240, 250, 300, 400, 600, 800, 1200, 1500, 1800, 2000, 2500, 3600, and 5000 pulses per revolution
10 mm standard solid shaft
Accept source voltages from 10 V to 30 VDC
100 KHz maximum response frequency
IP65 Rating (splash proof)

Small body with 50mm diameter and 35mm depth
Stock and non-stock models range from 5 bit to 10 bit Gray code outputs
8 mm stainless steel solid shaft
Accept source voltages from 10 V to 26 VDC
20 KHz maximum response frequency
IP65 Rating (splash proof)

Encoder Accessories
Couplings: Metric-to-metric and metric-to-S.A.E. couplings available.
Mounting Brackets: Available for the medium and heavy duty encoders.