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Best gearboxes gearheads speed reducers - July 2026

Last Updated - July 8, 2026

1
Best Choice

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Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

GTPBAO

Gearbox Speed 6GN Reduction Gearbox 104x104mm Frame 15mm Shaft Reducer Gear Head for 180W 200W 250W AC Asynchronous Speed Regulating Motor Reducer Shaft(50K)

GTPBAO

$162.00

More Details
Main highlights
- It has a low friction motor, low operating noise, and easy operation
- High transmission efficiency, wide speed range, high precision
- 6GN Reduction Gearbox 104x104mm Frame 15mm Shaft Reducer Gear Head for 180W 200W 250W AC Asynchronous Speed Regulating Motor
$162.00
2

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Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Bestopper

Ratio 10:1 Planetary Gearbox Nema 34 Gear Speed Reducer 1/2" (12.7mm) Input Shaft 16mm Output Match 86mm Flange Stepper Motor for CNC Router Bandsaw Benchtop Machine

Bestopper

$120.00

More Details
Main highlights
- This nema 34 planetary gearbox mainly matches the stepper motor to reduce speed and increase torque. Widely used in CNC field on mill,lathe,bench,packaging machine etc.
- The gearhead has nema 34 Input & ouput flange,suitable for flange 86mm stepper motor and other motors which can completely match the installation size .
- Rated speed is 3000RPM, 10:1 gear ratio ,the rated holding torque is 50N.m and the Max. holding torque is 80N.m
- Input shaft hole is 1/2" that can match the 12.7mm shaft motor (without keyed). The output shaft diameter is 16mm
- Easy installtion and small size, you can mount the gear reducer with 4pcs screws , and the gear reducer body length is 94mm，very convenient to the machine which has limited space for a gearbox
$120.00
3

✖
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

TOSEASTARS

Nema 34 Planetary Gearbox Ratio 5:1 Speed Reducer Backlash <18 arc-min 3000RPM Gear Head 14 Inch Input Shaft for Stepper Motor, Speed Reducers with Screw for CNC

TOSEASTARS

$51.99

More Details
Main highlights
- Wide Application: Planetary gear is a good solution in applications that need low rotation speeds and/or lots of huge torque. It is mainly used to reduce the speed of the 86mm stepper motor, widely working on mill, lathe, bench, and bandsaw machines.
- 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).
- Included:1pc x Planetary Gearbo, 4pc x Screws. High-precision gears, low noise, professional engineers design, high hardness.
- Gearbox Type: Planetary gearbox for nema34 86mm stepper motor, gear reduction box Backlash 18 arc-min. Rated load (N.M): 30Nm, Maximum load (N.M): 50Nm. Material: Alloy Steel.
- Gear Ratio: 5 :1. Long life - 20000h, usage durable,Full Load Efficiency: 95%, Low noise. Protection Class: IP65.
$51.99
4
Best Value

✖
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

TOSEASTARS

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

TOSEASTARS

$72.99

More Details
Main highlights
- 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).
- Planetary gear is a good solution in applications that need low rotation speeds and/or lots of huge torque.
- Included:1pc x Planetary Gearbo, 4pc x Screws. High-precision gears, low noise, professional engineers design, high hardness.
- Gearbox Type: Planetary gearbox, reduction box Backlash < 35 arc-min, Material: Alloy Steel, Quantity: 1 piece, Flange: 86mm, for nema34 86mm stepper motor.
- Gear Ratio: 100 :1. Long life - 20000h, usage durable, Low noise - less than 60dB. Rated load (N.M): 60Nm, Maximum load (N.M): 100Nm.
$72.99
5

✖
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

TOSEASTARS

Planetary Gearbox Speed Reducer Ratio 10:1 Backlash 18 arc-min 3000RPM Gear Head Gearboxes for 14mm Input Shaft Nema34 86mm Stepper Motor

TOSEASTARS

$52.99

More Details
Main highlights
- Wide Application: Planetary gear is a good solution in applications that need low rotation speeds and/or lots of huge torque. It is mainly used to reduce the speed of the Nema 34 stepper motor, widely working on mill, lathe, bench, and bandsaw machines.
- Planetary gearbox for Nema34 86mm Stepper Motor. Reduction box frame size: 85x85 mm(3.35 inch). Gear reduction box output shaft: 16mm(0.63 inch); gear reducer input shaft: 14mm( 0.55 inch).
- Included:1pc x Planetary Gearbox, 4pc x Screws. High-precision gears, low noise, professional engineers design, high hardness.
- Gearbox Type: Planetary gearbox for nema34 86mm stepper motor. Planetary gear box Backlash < 18 arc-min, Rated load (N.M): 30Nm, Maximum load (N.M): 50Nm.
- Gear Ratio: 10 :1. Long life - 20000h, usage durable,Full Load Efficiency: 95%, Low noise. Protection Class: IP65.
$52.99

Best gearboxes gearheads speed reducers - July 2026

Gearbox Speed 6GN Reduction Gearbox 104x104mm Frame 15mm Shaft Reducer Gear Head for 180W 200W 250W AC Asynchronous Speed Regulating Motor Reducer Shaft(50K)

Ratio 10:1 Planetary Gearbox Nema 34 Gear Speed Reducer 1/2" (12.7mm) Input Shaft 16mm Output Match 86mm Flange Stepper Motor for CNC Router Bandsaw Benchtop Machine

Nema 34 Planetary Gearbox Ratio 5:1 Speed Reducer Backlash <18 arc-min 3000RPM Gear Head 14 Inch Input Shaft for Stepper Motor, Speed Reducers with Screw for CNC

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 Speed Reducer Ratio 10:1 Backlash 18 arc-min 3000RPM Gear Head Gearboxes for 14mm Input Shaft Nema34 86mm Stepper Motor

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