Selecting the correct gearbox, gearhead, or speed reducer is crucial for optimizing performance and longevity in industrial applications. These components are essential for controlling motor speed and torque, directly impacting efficiency and the operational success of machinery. Understanding their nuances ensures a reliable and cost-effective solution for your specific needs.
Looking for the best Gearboxes, Gearheads & Speed Reducers?
Discover now our comparison of the best Gearboxes, Gearheads & Speed Reducers. It is never easy to choose from the wide range of offers. On the market, you will find an incalculable number of models, all at different prices. And as you will discover, the best Gearboxes, Gearheads & Speed Reducers are not always the ones at the highest prices! Many criteria are used, and they make the richness and relevance of this comparison.
To help you make the best choice among the hundreds of products available, we have decided to offer you a comparison of the Gearboxes, Gearheads & Speed Reducers in order to find the best quality/price ratio. In this ranking, you will find products listed according to their price, but also their characteristics and the opinions of other customers. Also discover our comparisons by categories. You won’t have to choose your products at random anymore.
No. 1
Nema 34 Planetary Gearbox Ratio 100:1 Speed Reducer Gear Head Gearbox Backlash <35 arc-min for 4mm Input Shafe...
- 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).
- Gear Ratio: 100 :1. Long life - 20000h, usage durable, Low noise - less than 60dB. Rated load (N.M): 60Nm, Maximum load (N.M): 100Nm.
- Gearbox Type: Planetary gearbox, reduction box Backlash < 35 arc-min, Material: Alloy Steel, Quantity: 1 piece, Flange: 86mm, for nema34 86mm stepper motor.
- 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.
SaleNo. 2
FPBIGCHA WPA WPS WPO WPX40 50 60 70 80 100 Gearbox Iron Shell Worm Gear Reducer Small Motor Transmission Gears...
- You can change the wiring-connection to change motor rotation
- With time delay and increased torque function,It is widely used in light industry, food industry, chemical construction, machinery and equipment, textile industry, building materials, logistics, environmental protection and other fields.
- Offers the flexibility to change the direction of rotation by simply altering the wiring connection, accommodating various operational requirements and enhancing the motor's versatility in different setups.
- The direction of the output shaft of the is perpendicular to the motor shaft, so the output shaft direction of the main body will be shorter than that of the ordinary geared motor.
No. 3
Ratio 5:1 Planetary Gearbox Nema34 Gearheads Speed Reducer Backlash 7 arc-min for 14mm / 12.7mm Shaft Nema...
- 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).
- Gear Ratio: 5:1. High torque - 122Nm; long life - 20000h, usage durable, Low noise - less than 60dB.
- Gearbox Type: Planetary gearbox, Material: Alloy Steel, Quantity: 1 piece, Flange: 90mm, for nema34 86mm stepper motor.
- 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, 1pc x 14mm to 12.7mm shaft adapter - the function of the shaft adapter is to modifies the input bore of the gearbox. The standard 14mm input bore fits a NEMA 34 stepper motor with a 14mm output shaft, when...
No. 4
CNCTOPBAOS NMRV040 Worm Gearbox Speed Reducer Ratio 20:1 RV40 NMRV-040 Metal Gearheads Worm Gear Reducer for...
- Model: NMRV040
- Flange side length: 86mm/3.38"; Spigot length: 73mm/2.87"; Diagonal pitch: 95mm/3.74"; Input Bore Size: 14mm/0.55"; Output Bore Size: 18mm/0.7"
- Speed Ratio: 20:1
- Application:Matched with Nema34 Stepper Motor/Nema34 Servo Motor
- Advantage: Smooth transmission, low noise; The multi-faceted installation;High-quality aluminum alloy enclosure, thermal performance, large carrying capacity
No. 5
Nema23 Planetary Gearbox Speed Reducer Backlash 12 arc-min Gear Ratio 50:1 for 8mm/6.35mm Shaft 57mm Stepper...
- 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...
- Gear Reduction Box Backlash Precision: <= 12 Arcmin, Full load efficiency: 96%, max input speed:8000rpm, rated input speed: 4000 rpm, Torsion rigidity: 1.8Nm/arcmin.
- Applications: Compact design, flexible and easy installation, space-saving. This planetary gearbox is mainly used to reduce speed and increase holding torque, widely applied in CNC machine, such as engraving machine, milling machine, lathe, work bench...
- Maximum radial force/torque: 240N; Maximum axial force/torque:220N. It's a good solution in applications that need low rotation speeds and/or lots of huge torque.
- Advantages: Special grease, non-solidifying, long-lasting lubrication,lifespan is around 20000h; High-precision gears, low noise, professional engineers design, high hardness, 20CrMnTi steel, hard hobbing after carburizing, hardness up to 50 degrees...
No. 6
Planetary Gearbox Speed Reducer Gear Head Ratio 20:1 Backlash <= 7 arc-min for 19mm Input Shaft 750w 80mm...
- 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).
- Gear Ratio: 20 :1, Gear Reduction Box Backlash Precision: <= 12 Arcmin, Full load efficiency: 94%, max input speed: 6000rpm, rated input speed: 3500 rpm, Torsion rigidity: 1.8Nm/arcmin.
- Applications: Compact design, flexible and easy installation, space-saving. This planetary gearbox is mainly used to reduce speed and increase holding torque, widely applied in CNC machine, such as engraving machine, milling machine, lathe, work bench...
- Maximum torque: 122N. It's a good solution in applications that need low rotation speeds and/or lots of huge torque.
- Advantages: High-precision gears, low noise, professional engineers design, high hardness, 20CrMnTi steel, hard hobbing after carburizing, hardness up to 50 degrees, wear-resistant, no tooth chipping. Included:1pc x Planetary Gearbo, 4pc x Screws.
No. 8
CNCTOPBAOS NMRV040 Worm Gearbox Speed Reducer Ratio 30:1, NMRV40 RV40 High Torque Metal Gearheads 86mm Flange...
- Model: NMRV040
- Speed Ratio: 30:1
- Flange side length: 86mm; Spigot length: 73mm; Diagonal pitch: 95mm; Input Bore Size: 14mm; Output Bore Size: 18mm
- Application: Matched with Nema34 Stepper Motor/Nema34 Servo Motor
- Advantage: Smooth transmission, low noise; The multi-faceted installation;High-quality aluminum alloy enclosure, thermal performance, large carrying capacity
No. 9
MIAOSHE NMRV050 Worm Gearbox Speed Reducer 80B14 Round Flange with 19mm Input Shaft 24mm Output Bore Metal...
- Precision Engineering: The 80B14 Input Flange features a 19mm input bore and 6mm keyway, with a 24mm output bore and 8mm keyway for optimal performance.
- Versatile Applications: Ideal for automotive, elevators, petrochemicals, construction, textiles, and lifting operations, this worm gear reducer adapts to various industrial needs.
- Sturdy Construction: Made from high strength 20CR carburized alloy structural steel, our worm gear ensures exceptional durability and reliability in demanding environments.
- Smooth and Quiet Operation: Enjoy a smooth operation with engineering that minimizes noise levels while delivering stable performance and reduced vibrations.
- Vertical Precision Design: The output bore is expertly crafted to exit at a precise angle, making it the perfect choice for CNC machines, 3D printers, robotics, and industrial automation.
No. 10
PGFUN 20:1 Right Angle Worm Gearbox 90° Angle Drive Steering Gear Reducer 20T Reduction Gearbox Simple...
- 20:1 Right Angle Worm Gearbox for Simple DIY Mechanical Application.
- Specification: 20 teeth, 6mm shaft, 1 input shaft drive 1 right angle steering output shafts.
- Motor drive can be realized with coupling and belt pulley gear.
- Material: Aluminum alloy & #45 Steel, Overall Size: 82 x 82 x 50 mm.
- Note: it's simple steering gear, can not used for high troque and high rotating speed CNC application.
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Last update on 2026-04-17 / Affiliate links / Images from Amazon Product Advertising API
How to Choose the Best Gearboxes, Gearheads & Speed Reducers
Making Your Choice
When selecting, consider the operating environment (temperature, dust, moisture), duty cycle, and required precision. For high-torque, low-speed applications, worm or planetary gears might be best. If smooth, quiet operation is paramount, helical or cycloidal drives are good options. Always consult manufacturer specifications and consider consulting with an engineer if your requirements are complex.Frequently Asked Questions
What is the difference between a gearbox and a gearhead?
A gearbox is a general term for a mechanical system that alters speed and torque using gears. A gearhead often refers to a specific type of gearbox designed to attach directly to a motor, often as a single unit.
How do I calculate the required gear ratio?
Divide the motor's speed by the desired output speed. For example, if your motor runs at 1800 RPM and you need 300 RPM output, you'll need a 6:1 gear ratio.
What does 'backlash' mean in a gearbox?
Backlash is the small amount of play or lost motion between mating gear teeth. Low backlash is critical for applications demanding precise positioning, like robotics.
How does torque rating affect my choice?
The torque rating indicates the maximum rotational force the reducer can handle. You must select a unit with a torque rating that exceeds your application's maximum torque requirement, including any startup or shock loads.
Are gear reducers suitable for high-temperature environments?
Some gear reducers are designed for high-temperature operation, but it depends on the materials and lubrication used. Always check the product specifications for operating temperature limits.
What maintenance do these components typically require?
Maintenance usually involves checking and topping up or replacing lubricant at recommended intervals. Regular inspection for leaks or unusual noises is also important for early detection of potential issues.
