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PG71 Gearmotor, 10 mm Round Output with 775 Motor and Encoder (am-2971)

Price: $89.00

Stock Status: In Stock

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Product Overview:
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.

Physical Specs:
  • 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
  • Pulses Per Revolution: 7
  • Operating Voltage: 5VDC
  • Pinout:
    • Pin 1: 5Vdc
    • Pin 2: Gnd
    • Pin 3: Encoder Output Cha. A*
    • Pin 4: Encoder Output Cha. B*
* 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.

Performance Specs:
  • 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.

Average Customer Review: 4.5 of 5 Total Reviews: 9 Write your own review!

  0 of 0 people found the following review helpful:
Great gear motor! March 17, 2017
Reviewer: Chris Hafner from Wolfeboro, NH United States  
These worked great in our winching system! We used two with the matching planetary gear bracket, series 25 sprocket, and chain.

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  0 of 0 people found the following review helpful:
February 16, 2017
Reviewer: Sue from Columbus, OH United States  

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  0 of 0 people found the following review helpful:
Perfect July 7, 2016
Reviewer: Omar Khaled from Cairo, Cairo Egypt  
The motors more than perfect , powerful , the consumption of power is good driven by normal pwm motor drivers .
The key of the shaft make a little bit problem.

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  0 of 0 people found the following review helpful:
Great gearbox, but keyway too narrow June 15, 2016
Reviewer: Gustave A Michel II from Slidell, LA United States  
I was unable to insert the 4mm machine key into the keyway without first filing the key down a pretty good bit at one end.  The key fit into the hub OK, so I'm presuming the issue was with the gearbox shaft.

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  1 of 1 people found the following review helpful:
An excellent purchase December 30, 2015
Reviewer: Dilip Kumar Pratihar from Kharagpur, West Bengal India  
Thank you for your cooperation before purchasing and nice behaviour throughout the whole time. Regarding the technical assistant, we are also very much satisfied for your quick response. Though we may need some more help from you.
Overall we are very much happy to do business with you.
Abhishek Rudra Pal
c/o Prof. Dilip Kumar Pratihar
IIT Kharagpur

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