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Home » Products » Encoders » Incremental » Rotary » Shaft

This product has been succeeded by the H6 Ball Bearing Optical Shaft Encoder.

This next generation product is highly recommended for all new designs and applications. Learn more »

Overview

Heavy duty ball bearings track up to 10,000 RPM
2-channel quadrature, TTL squarewave outputs
Optional index (3rd channel)
64 to 2500 cycles per revolution (CPR)
256 to 10,000 pulses per revolution (PPR)
Tracks from 0 to 100,000 cycles/sec
-40 to +100C operating temperature
Single +5VDC supply

The H3 series ball bearing optical shaft encoder has a molded polycarbonate enclosure, which utilizes either a 5-pin locking or standard connector. This non-contacting rotary to digital converter is designed to provide...

Parameter	Dimension / Units
Shaft Speed	10,000 RPM max. continuous
Acceleration	10,000 rad/sec²
Shaft Torque	0.05 in. oz. max.
Shaft Loading	2 lbs. max.
Bearing Life	(90/P)³ = life in millions of revs. where P = radial load in pounds.
Weight	2.69 oz.
Shaft Runout	0.006 T.I.R. max.
Moment of Inertia	0.001 oz. in. s²
Vibration	20 g. 5 to 2KHz

Specifications apply over entire operating temperature range.
Typical values are specified at Vcc = 5.0Vdc and 25°C.
For complete details see the EM1 and HEDS product pages.

	Supply Current	Output voltage low	Output voltage high
Resolution	Typ / Max	Max	Min	Based on
1000, 1024 CPR, non-index	17 / 40 mA	0.4 volts @ 3.2mA	2.4 volts @ -200uA	Low-res HEDS
2000, 2048 CPR, non-index	57 / 85 mA	0.5 volts @ 8mA	2.4 volts @ -40uA	High-res HEDS
64 CPR, with index	27 / 30 mA	0.5 volts @ 8mA	2.0 volts @ -8mA	EM1
1000, 1024 CPR, with index	57 / 85 mA	0.5 volts @ 8mA	2.4 volts @ -40uA	High-res HEDS
1800 CPR, with index	55 / 57 mA	0.5 volts @ 8mA	2.0 volts @ -8mA	EM1
2000, 2048 CPR, with index	57 / 85 mA	0.5 volts @ 8mA	2.4 volts @ -40uA	High-res HEDS
2500 CPR, with index	55 / 57 mA	0.5 volts @ 8mA	2.0 volts @ -8mA	EM1

Pin	Description
1	Ground
2	Index
3	A channel
4	+5VDC power
5	B channel

Product Description

The H3 is fully assembled with a shaft, two 1/4" ID by 1/2" OD heavy duty ball bearings and a mounting plate. The shaft is made of brass. This design allows for an optional rear shaft extension. The mounting plate comes with 2 mounting holes for screws #4 or smaller.

The H3 is normally designed for applications of 6 feet or less. For longer cable lengths, adding a PC4 / PC5 differential line driver is recommended.

A connection to the H3 series encoder is made through either a 5-pin locking or standard connector (sold separately). The mating connectors are available from US Digital with several cable options and lengths.

Product Notes

Cables and connectors are not included and must be ordered separately.
US Digital warrants its products against defects in materials and workmanship for two years. See complete warranty for details.