H3 Ball Bearing Optical Shaft Encoder
- Ball bearing option tracks to 10,000 RPM
- 2-channel quadrature, TTL squarewave outputs
- 3rd channel index option available on some resolutions
- 64 to 10,000 cycles per revolution (CPR)
- 256 to 40,000 pulses per revolution (PPR)
- Wide operating temperature
- Single +5VDC supply
See more info below
Configure the H3
H3 Product Description
The H3 series ball bearing optical shaft encoder has a glass-filled polymer enclosure. This non-contacting rotary to digital converter is designed to provide digital feedback information.
The H3 is fully assembled with a brass shaft, two 1/4" ID by 1/2" OD ball bearings and a mounting plate. The mounting plate comes with 4 mounting holes for #2 - #4 size screws.
The H3 is designed to drive cables up to 10 feet long. For longer cable lengths, adding a PC4 / PC5 differential line driver is recommended.
A connection to the H3 series encoder is made through a 5-pin standard connector. The mating connectors are available from US Digital with several cable options and lengths.
View here or download the specifications
|Operating Temperature (CPR < 3600)||-40 to 100||C|
|Operating Temperature (CPR ≥ 3600)||-25 to 100||C|
|Vibration (5Hz to 2kHz)||20||G|
|Electrostatic Discharge, IEC-61000-4-2
|Max. Acceleration||100000 rad/sec²|
|Max. Shaft Speed (mechanical)||10000 RPM (1)|
|Max. Shaft Torque||0.05 in-oz|
|Max. Shaft Loading||2 lbs.|
|Bearing Life||life in millions of revs = (90/P)³
where P = radial load in pounds.
|Max. Shaft Runout||0.006 in. T.I.R.|
|Mounting Plate Screw Torque||(#2-56) 2-3|
|Moment of Inertia||0.001 oz-in-s²|
|Technical Bulletin TB1001 - Shaft and Bore Tolerances||Download|
B leads A for clockwise shaft rotation, and A leads B for counterclockwise rotation when viewed from the shaft side of the encoder.
- 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 EM2 product pages.
|Supply Current||27||33||mA||CPR < 1000, no load|
|54||62||mA||CPR ≥ 1000 and < 3600, no load|
|72||85||mA||CPR ≥ 3600, no load|
|Low-level Output||0.5||V||IOL = 8mA max., CPR < 3600|
|0.5||mA||IOL = 5mA max., CPR ≥ 3600|
|0.05||mA||no load, CPR < 3600|
|0.25||mA||no load, CPR ≥ 3600|
|High-level Output||2.0||V||IOH = -8mA max., CPR < 3600|
|2.0||V||IOH = -5mA max., CPR ≥ 3600|
|4.8||V||no load, CPR < 3600|
|3.5||V||no load, CPR ≥ 3600|
|Output Current Per Channel||-8||8||mA||CPR < 3600|
|-5||5||mA||CPR ≥ 3600|
|Output Rise Time||110||nS||CPR < 3600|
|50||nS||CPR ≥ 3600|
|Output Fall Time||35||nS||CPR < 3600|
|50||nS||CPR ≥ 3600|
Product Change Notifications
|Laser Marking - PCN 5253||6/17/2015||As part of our ongoing continuous improvement efforts, US Digital is changing the labeling/marking method for our E3, E6, H3, H6, S1, S2 and S6 products.||Download|
|EM1 & EM2 Update - PCN 4199||1/14/2014||Based on our continuous process improvement program, US Digital is changing the current marking method for our EM1 and EM2 encoder modules to a serialization method. This change will allow for each module to have a unique code; the current marking method is based on a date code system that includes all encoder modules produced within a specific week / year. The serialization system will be based on a hexadecimal system.||Download|
|EOL Sealed Housing Option - PCN 1021||4/11/2013||This PCN is a formal notification that US Digital is discontinuing the Sealed Housing option for the following products:
|EM1 LED Die - PCN 1016||2/7/2013||As part of US Digital's continual assurance of supply strategy, we have qualified additional sources for our LED die used in our EM1 encoder module, which in turn impacts all of the following products:
EM1, E2, E3, E5, E6, H1, H15, H3, H5, H6, HB5M, HB6M, HD25, PE, S1, S2, S5, S6, T5 and T6
The device specification will remain the same, i.e. there will be no change to form, fit or function of the product(s) as specified by US Digital. The appropriate quality and reliability testing has been performed on representative products to ensure normal parametric distribution, consistent with US Digital's quality and reliability standards.
- 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.
3D Model Downloads
Please configure your product first to download a 3D model.
(Note: The formats below will become links if there are 3D models available.)
- SolidWorks format
- IGES format
- Parasolid format
- STEP format
Related Products & Accessories
The following are related products for the H3
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