PG Series Gearboxes

$65.00 – $99.00

The Planetary Gearbox (PG) series of gearboxes and gearmotors feature robust planetary gearing inside paired with reliable motors. You asked for it, we delivered. This gearbox now features two hex ...Read More

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Product Overview

The Planetary Gearbox (PG) series of gearboxes and gearmotors feature robust planetary gearing inside paired with reliable motors. You asked for it, we delivered. This gearbox now features two hex output shaft options to easily attach to 3/8 in. or 1/2 in. hex bore wheels, sprockets, and other motion products without the need for adapters.

The PG Series of Planetary Gearboxes are designed for the following motors for the specific ratios RS775-125 Motor, with Encoder For PG27 Gearbox and RS775-5 Motor, with Encoder For PG71 and PG188 Gearbox, or the AndyMark 9015 Motor using a Hardware Kit for PG 71 and 188 Gearbox with Pinion Gear for 9015 Motor

COVID-19 related information:

These gearmotors are being used for the recent ventilator development efforts. We are ramping up production of am-3656, which is the 1/2" hex output shaft, 188:1 ratio, with motor included.

PG Gearmotor Part Numbers (click below to select by part number):
Useful Additional PG Parts: Physical Specifications Common Among all PG Series Gearboxes:
  • Pre-Lubricated Gear Material: Steel and Plastic
  • Body Material: Steel
  • Input Voltage: 12 Volt DC
  • Mounting Holes: 4x M4-0.7 on 35mm Bolt Circle, AND 4x #10-32 on 2.00"
PG977 Specifications:
  • Gearbox Reduction: 977:1
  • No Load Free Speed: 6.4 RPM
  • Stall Torque: 117 ft-lbf
  • Minimum Backdrive Torque: 14.5 ft-lbs
PG516 Specifications:
  • Gearbox Reduction: 516:1
  • No Load Free Speed: 11 RPM
  • Stall Torque: 92 ft-lbf
  • Minimum Backdrive Torque: 7 ft-lbs
PG188 Specifications:
  • Gearbox Reduction: 188:1
  • No Load Free Speed: 28 RPM
  • Stall Torque: 33 ft-lbf
  • Minimum Backdrive Torque: 3.5 ft-lbs
PG71 Specifications:
  • Gearbox Reduction: 71:1
  • No Load Free Speed: 75 RPM
  • Stall Torque: 16.6 ft-lbf
  • Minimum Backdrive Torque: 1.3 ft-lbs
PG27 Specifications:
  • Gearbox Reduction: 26.9:1
  • No Load Free Speed: 198 RPM
  • Stall Torque: 6.3 ft-lbf
  • Minimum Backdrive Torque: 0.3 ft-lbs
Encoder Specifications:
  • 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.

FRC Parts Legality
The following gearmotors (gearbox + motor) contain or have contained motors with part numbers that have been deemed legal for the 2020 FIRST Robotics Competition Season: am-0576, am-0586, am-0629, am-0914, am-0915, am-0939, am-2082, am-2083, am-2084, am-2161. am-2193, am-2193, am-2194, am-2389, am-2542, am-2549, am-2550, am-2765, am-2766, am-2923, am-2924, am-2937, am-2938, am-2971, am-3108, am-3109, am-3183, am-3651, am-3652, am-3653, am-3654, am-3655, am-3656
Variants of these part numbers that include additional letters are also legal.

Specifications

  • Lubrication: Included with Gearbox,Pre-lubricated Gears
  • Material: Steel
  • Maximum Torque Recommendation: Estimated 35-ft lbs maximum torque
  • Motor Input: PG
  • Motor Quantity: 1
  • Mounting Geometry: 4 10-32 threaded holes on a 2.00" Bolt Circle, 4 M4x0.7 Threaded Holes on a 1.378" Bolt Circle,Mounting holes for 500 and 775 series motors,4 10-32 threaded holes on a 2.00" Bolt Circle,4 M4x0.7 Threaded Holes on a 1.378" Bolt Circle,4 10-32 threaded holes on a 2.00 in. Bolt Circle,4 M4x0.7 Threaded Holes on a 1.378 in. Bolt Circle
  • Overall Depth: 2.892 in.,3.33 in.,3.78 in.,3.787 in.,4.48 in.
  • Ratio: 27:1,71:1,188:1,516:1,977:1
  • Voltage: 12V DC
  • Weight: 1.66 lbs,0.840 lbs,1.96 lbs,1.14 lbs,2.20 lbs,1.4 lbs,1.98 lbs,2.23 lbs,2.49 lbs

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