This is a gearmotor consisting of a 3-stage planetary gearbox and a RS775 series motor and it comes with a Hall Effect Encoder attached to the motor.
This gearmotor uses am-2161 as the input motor portion of this product.
This gearmotor uses a Hall-Effect Encoder on the back, am-2816a
Reading the encoder can be done with our Hall Effect Encoder Cable, am-2993.
We also have a convenient bracket (am-2197, not included) which can mount this motor.
- Overall Length: 6.26 inches
- Maximum Diameter: 1.775 inches
- Output Shaft size: 10mm (0.393") dia with 4mm (0.157") keyway
- Weight: 2 pounds
- Mounting Holes: M4x0.7 threaded hole (4) x 9mm deep
- Electrical Connection Geometry: 3/16" wide spade connectors (2)
- Gear Material: steel, formed from powdered metal
- Body Material: steel
- Lubrication: this gearbox is pre-greased and needs no further lubrication
* Note: Because the encoder is connected to the back of the motor shaft, the rotation is backwards from normal front mounted encoders so you will need compensate for this in software or simply connect Ch. A output to your Ch. B input and Ch. B output to your Ch. A input.
- Pulses Per Revolution: 7
- Operating Voltage: 5VDC
- Pin 1: 5Vdc
- Pin 2: Gnd
- Pin 3: Encoder Output Cha. A*
- Pin 4: Encoder Output Cha. B*
- Gearbox Reduction: 71:1
- Total Counts per revolution: 497 (7 Counts per motor rotation multiplied by gearbox reduction, 71)
- Voltage: 12 volt DC
- No Load Free Speed: 75 rpm
- No Load Current: 0.6 amps
- Tested Gearbox Output Power: 44 Watts*
- Stall Torque: 16.6 ft-lbf*
- Stall Current: 22 amps*
- Minimum torque needed to back drive a non-powered PG71: 1.3ft-lb
- Maximum torque applied at shaft which breaks gearbox: 39 ft-lbs (breakage point is shearing of shaft)
* - These performance numbers were made by Dr. Richard Wallace, and his team at the Whirlpool Motor Lab in Benton Harbor, Michigan. Thanks to Richard and his colleagues for this testing and service to the FIRST community. Here are the documented results from the testing at Whirlpool:
* - All of these numbers were the result of the testing voltage at 12 volts and with a 10 gauge, 15 foot long wire for each motor lead.