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Best Gearboxes Gearheads Speed Reducers Deals Online in the US (10 deals found)

Last Updated - March 15, 2026 Sort By:

Best Choice

New
Nema 34 Planetary Gearbox Ratio 100:1 Speed Reducer Gear Head Gearbox Backlash <35 arc-min for 4mm Input Shafe Nema34 86mm Stepper Motor for CNC Benchtop Lathe Machine 3D Printer Router
Planetary gearbox for Nema34 86mm Stepper Motor. Reduction box frame size: 86x86 mm(3.38 inch). Gear reduction box output shaft: 16mm(0.63 inch); gear reducer input shaft: 14mm( 0.55 inch).

$69.99
New
FPBIGCHA WPA WPS WPO WPX40 50 60 70 80 100 Gearbox Iron Shell Worm Gear Reducer Small Motor Transmission Gears Reduction Box(60-1,WPA40)
You can change the wiring-connection to change motor rotation

$91.90
New
5:1 Right Angle Worm Gearbox, 8 mm Shaft 90 Degree Gearbox, Drive Steering Gear Reducer, 20T Reduction Gearbox, Simple Mechanical DIY Module
The gearbox features 20 teeth, an 8mm shaft, and one input shaft that connects to one output shaft for right angle steering

$31.73
Best Value

New
Ratio 5:1 Planetary Gearbox Nema34 Gearheads Speed Reducer Backlash 7 arc-min for 14mm / 12.7mm Shaft Nema34 86mm Stepper Motor, Planetary Reducers 3500RPM Gear Reduction Box
Planetary gearbox for Nema34 86mm Stepper Motor. Reduction box frame size: 90x90 mm(3.54 inch). Gear reduction box output shaft: 20mm(0.78 inch); gear reducer input shaft: 14mm( 0.55 inch) and 12.7mm(0.5 or ½inch).

$92.99
Used
Ratio 5:1 Planetary Gearbox Nema34 Gearheads Speed Reducer Backlash 7 arc-min for 14mm / 12.7mm Shaft Nema34 86mm Stepper Motor, Planetary Reducers 3500RPM Gear Reduction Box
Planetary gearbox for Nema34 86mm Stepper Motor. Reduction box frame size: 90x90 mm(3.54 inch). Gear reduction box output shaft: 20mm(0.78 inch); gear reducer input shaft: 14mm( 0.55 inch) and 12.7mm(0.5 or ½inch).

$83.69
New
CNCTOPBAOS NMRV040 Worm Gearbox Speed Reducer Ratio 20:1 RV40 NMRV-040 Metal Gearheads Worm Gear Reducer for Nema34 Stepper Motor Servo Motor NMRV40 (20:1)
Model: NMRV040

$42.99
New
CNCTOPBAOS NMRV040 Worm Gearbox Speed Reducer Ratio 30:1, NMRV40 RV40 High Torque Metal Gearheads 86mm Flange Worm Gear Reducer 14mm Input 18mm Output for Nema34 Stepper Motor Servo Motor (30:1)
Model: NMRV040

$42.99 $45.90
New
Planetary Gearbox Speed Reducer Gear Head Ratio 20:1 Backlash <= 7 arc-min for 19mm Input Shaft 750w 80mm Servo Motor, Planetary Reducers 3500RPM Gear Box for Reducer CNC Lathe Machine
Planetary Reducer for 80mm Servo Motor. Planetary Gear Frame Size: 80x80 mm; Output Shaft: 20mm; Input Shaft: 19mm, adapter motors: Fit for 19mm Shaft 80mm servo motor. Gearbox Body length: 136.5mm (not including output shaft length).

$129.00
New
Nema23 Planetary Gearbox Speed Reducer Backlash 12 arc-min Gear Ratio 50:1 for 8mm/6.35mm Shaft 57mm Stepper Motor 40Nm 4000rpm for CNC Router Benchtop Lathe Machine 3D Printer
Planetary Reducer for Nema23 (Flange=57mm) Stepper Motor. Planetary Gear Frame Size: 60x60 mm; Output Shaft: 14mm; Input Shaft: 8mmand 6.35mm, adapter motors: Fit for 8mm and 6.35mm Shaft Nema 23 Stepper Motor; Gear Ratio: 50:1. Nema 23 Gearbox Body length: 58mm.

$69.99
Used
Nema23 Planetary Gearbox Speed Reducer Backlash 12 arc-min Gear Ratio 50:1 for 8mm/6.35mm Shaft 57mm Stepper Motor 40Nm 4000rpm for CNC Router Benchtop Lathe Machine 3D Printer
Planetary Reducer for Nema23 (Flange=57mm) Stepper Motor. Planetary Gear Frame Size: 60x60 mm; Output Shaft: 14mm; Input Shaft: 8mmand 6.35mm, adapter motors: Fit for 8mm and 6.35mm Shaft Nema 23 Stepper Motor; Gear Ratio: 50:1. Nema 23 Gearbox Body length: 58mm.

$66.49

10 Gearboxes Gearheads Speed Reducers deals are available from: Amazon stores, starting from $31.73.
The biggest discount we found is 6% on CNCTOPBAOS NMRV040 Worm Gearbox Speed Reducer Ratio 30:1, NMRV40 RV40 High Torque Metal Gearheads 86mm Flange Worm Gear Reducer 14mm Input 18mm Output for Nema34 Stepper Motor Servo Motor (30:1) at Amazon.
The lowest price we found is $31.73 while the highest is $129.00.
Prices for the best Gearboxes Gearheads Speed Reducers deals average at $72.18.
Last updated on March 15, 2026.
We scanned these quality online stores and more to deliver you with the best offers online available for Gearboxes Gearheads Speed Reducers.