Nema 34 Planetary Gearbox with NEMA34 Motor
Planetary Gearbox with NEMA34 Motor 80mm size inline planetary reducer for NEMA34 (flange 86mm) or NEMA42 stepper motor. Precision less than 18 Arcmin. High torque, compact size and competitive price. The 16mm shaft diameter ensures stability in applications with belt transmission. Fast mounting…
Planetary Gearbox With NEMA34 Motor
80mm inline planetary reducer for NEMA34 (flange 86mm) or NEMA42 stepper motor. Precision less than 18 Arcmin. High torque, compact size, and competitive price. The 16mm shaft diameter ensures stability in applications with belt transmission. Fast mounting for your equipment.
80mm inline planetary reducer for NEMA34 (flange 86mm) or NEMA42 stepper motor. Precision less than 18 Arcmin. High torque, compact size, and competitive price. The 16mm shaft diameter ensures stability in applications with belt transmission. Fast mounting for your equipment.
- Planetary ring gear material: metal steel
- Bearing at output type: Ball bearing
- Max radial load (12mm distance from flange): 550N
- Max shaft axial load: 500N
- Backlash: 18 arcmin
- Gear ratio from 3 to 216
- Planetary gearbox length from 79 to 107mm
NEMA34 Precision type Planetary Gearbox for NEMA 34 Gear Stepper Motor 50N.m (6944oz-in) Rated Torque
This gear ratio is 5:1. Please contact us if you need other gear ratios.
Input motor shaft request: Suitable with standard nema34 stepper motor shaft 14mm diameter*32 length(Including pad height). (plane and Round shaft and key shaft are both available)
Gearbox Specification:
| Specifications | First stage | Second stage | |
| Gear ratio | 4,5,7,9,10 | 16,20,25,28,35,36,40,45,49,50,63,70,81,90,100 | |
| Length | mm | 53 | 70 |
| Rated load | N.m | 6 | 25 |
| Max load | N.m | 12 | 40 |
| Efficiency | % | 95 | 90 |
| Backlash | arcmin | ≤15 | ≤25 |
| Weight | Kg | 0.8 | 1.1 |
| Rated input speed | rpm | 3000 | 3000 |
| Max input speed | rpm | 5000 | 5000 |
| Protection class | IP | 65 | 65 |
| Lubrication | grease(lifelong Lubrication) | grease(lifelong Lubrication) | |
| Noise | dB | ≤45 | ≤45 |
| Life | h | ~20000 | ~20000 |
Motor Specification:
| Model No. | Step Angle(°) | Voltage /Phase (V) | Current /Phase (A) | Resistance /Phase(Ω) | Inductance Phase (mH) | Holding Torque (kg.cm) | Detent Torque (g.cm.Max) | Rotor Inertia (g.cm²) | Motor Length (mm) | Lead Wires No. | Motor Weight (kg) |
| 57HS41-2004 | 1.8 | 2 | 2 | 1 | 1.2 | 3.2 | 210 | 120 | 41 | 4 | 0.45 |
| 57HS41-1004 | 1.8 | 5.4 | 1 | 5.4 | 9.5 | 5.5 | 210 | 120 | 41 | 4 | 0.45 |
| 57HS41-2004 | 1.8 | 2 | 2 | 1 | 2.2 | 5 | 210 | 120 | 41 | 4 | 0.45 |
| 57HS51-1504 | 1.8 | 2.4 | 1.5 | 1.6 | 3.8 | 8.2 | 360 | 275 | 51 | 4 | 0.65 |
| 57HS51-2004 | 1.8 | 2.4 | 2 | 1.2 | 3 | 9 | 360 | 275 | 51 | 4 | 0.65 |
| 57HS51-2006 | 1.8 | 2 | 2 | 1 | 1.6 | 7 | 360 | 275 | 51 | 6 | 0.65 |
| 57HS56-1504 | 1.8 | 5.7 | 1.5 | 3.8 | 12 | 13.5 | 400 | 300 | 56 | 4 | 0.7 |
| 57HS56-3004 | 1.8 | 2.85 | 3 | 0.95 | 2.8 | 12 | 400 | 300 | 56 | 4 | 0.7 |
| 57HS56-2006 | 1.8 | 3.6 | 2 | 1.8 | 2.8 | 9 | 400 | 300 | 56 | 6 | 0.7 |
| 57HS64-3004 | 1.8 | 3.9 | 3 | 1.3 | 2.2 | 15 | 500 | 380 | 64 | 4 | 0.8 |
| 57HS76-2004 | 1.8 | 8.6 | 2 | 4.3 | 16.2 | 24 | 680 | 480 | 76 | 4 | 1 |
| 57HS76-3004 | 1.8 | 2.7 | 3 | 0.9 | 3.5 | 20 | 680 | 480 | 76 | 4 | 1 |
| 57HS76-4004 | 1.8 | 2.4 | 4 | 0.6 | 2.2 | 20 | 680 | 480 | 76 | 4 | 1 |
| 57HS82-3004 | 1.8 | 4.2 | 3 | 1.4 | 5 | 22 | 700 | 510 | 82 | 4 | 1.2 |
| 57HS82-4004 | 1.8 | 3 | 4 | 0.75 | 3.5 | 20 | 700 | 510 | 82 | 4 | 1.2 |
| 57HS100-3004 | 1.8 | 3 | 3 | 1 | 4.5 | 25 | 1000 | 680 | 100 | 4 | 1.4 |
| 57HS112-3004 | 1.8 | 3.9 | 3 | 1.3 | 6.5 | 30 | 1200 | 800 | 112 | 4 | 1.7 |
| 57HS112-3504 | 1.8 | 2.45 | 3.5 | 0.7 | 3 | 28 | 1200 | 800 | 112 | 4 | 1.7 |
Custom design
If this motor does not match your requirements. Please feel free to contact us, we can customize shaft / winding / mounting flange / Cable / connector / encoder / brake / gearbox, etc. We will work with you and your team to design a motor that meets the precise needs of your application. All engineering and support are done internally.
Shaft Types you can choose:

Different planetary Gearbox Types

The difference between the economical and precision Nema34 planetary reducer
- First of all: the economic and precise installation methods are different. The input of the economical retarder assembly is the keyway (i.e., the motor's output shaft is an assemble able keyway motor); the input of the precision reducer assembly is clamped, and the input motor shaft is a flat or circular shaft or keyway. The shaft can be mounted (note: the keyway shaft can be removed after the key is removed).
- Second, the economical and precision planetary gearboxes have duplicate drawings and dimensions. The main difference is: that the material is different. Accurate gear units are superior to economic gear units in transmission efficiency and accuracy, heat, noise, and torque output stability.

FAQ about planetary gearbox
Q: What fields are your products mainly used in?
A: We currently have two main products: a precision planetary gear reducer and a solar gear motor. Most precision planetary reducers are used in automation fields, such as medical equipment, 3D printers, door openers, tapping machines, CNC lathes, and a series of automation equipment. In addition, our solar gear motor is used in photovoltaic power generation projects, mainly combined with a rotary drive to drive solar panels to track sunlight.
Q: How to choose the right planetary gearbox?
A: First, we need you to be able to provide relevant parameters. We will recommend a suitable gearbox more quickly if you have a motor drawing. If not, we hope you can provide the following motor parameters: output speed, output torque, voltage, current, IP, noise, operating conditions, motor size, power, etc.
Product Quick Detail:
- Standard and non-standard available
- With high quality and competitive price
- Prompt delivery
- Packing as per customer’s demand.
We promise will offer the best price by the high quality in china! We also accept special order about the products. If you are interested in our products. Please do not hesitate to let us know.We are pleased to give you the detailed information.We promise that our products would be safety and were in high quality and reasonable price. If you are interested in our products, please contact us asap.We are sincerely looking for your cooperation.
Most of our products are exported to Europe or Americas, both standard and nonstandard products available. We can produce as per your drawing or sample. Material can be standard or as per your special request. If you choose us, you choose reliable.

Materials Available
1. Stainless Steel: SS201, SS303, SS304, SS316, SS416, SS420
2. Steel:C45(K1045), C46(K1046),C20
3. Brass:C36000 ( C26800), C37700 ( HPb59), C38500( HPb58), C27200(CuZn37), C28000(CuZn40)
4. Bronze: C51000, C52100, C54400, etc
5. Iron: 1213, 12L14,1215
6. Aluminum: Al6061, Al6063
7.OEM according to your request
Surface Treatment
Annealing, natural canonization, heat treatment, polishing, nickel plating, chrome plating, zinc plating,yellow passivization, gold passivization, satin, Black surface painted etc.
Processing Method
CNC machining, punch,turning, milling, drilling, grinding, broaching, welding and assembly
QC & Certificate
Technicians self-check in production,final-check before package by professional Quality inspector
ISO9001:2008 , ISO14001:2001,ISO/TS 16949:2009
Package & Lead Time
Size: Drawings
Wooden Case/Container and pallet, or as per customized specifications.
15-25days samples. 30-45days offcial order
Port: Shanghai/Ningbo port





