• Planetary gearbox is produced by modular design, and can be combined according to client's request
• Involuted planetary gear design
•  Nodular cast iron Housing to increase rigidity and antiknock
• Heavy duty bearing on low‐speed shaft, and can bear big radial load due to proportionate distribution of   torque
• All gears are case hardened to get high surface hardness, which guarantee transmission efficiency and whole gearbox's life
• Planetary gearbox has 16 models for different torque range, and each model have 1‐5 reduction stages to achieve different ratios
• Ratio range: 3.15‐9000
• Input power: 0.25‐55KW
• Permit torque rang: ≤ 800000N. M
• Output speed: 0.425‐445 r/min
• Structure mode: Possibility of flange, foot, or shaft mounting solutions
• Wide and comprehensive range of N series for industrial applications
• Low speed shaft design: Cylindrical with key, splined, hollow with shrink disc or splined hollow shaft
• Rigid and precise nodular cast iron casing
• Low noise running, high manufacturing quality standard
• High and reliable performance, load capacity and low speed shaft bearing

Characteristic of Quality Planetary Gearbox for Slewing Drive/Speed Reducer :

1. The wide and comprehensive range of N series for industrial applications
2. Low-speed shaft design: Cylindrical with key, splined, hollow with shrink disc or splined hollow shaft
3. Rigid and precise nodular cast iron casing
4. Low noise running, high manufacturing quality standard
5. High and reliable performance, load capacity and low-speed shaft bearing

With all our activities DNV-ISO 9001, SGS -certified, we stand for top-quality service. Entrusting your gearboxes to the care of our Services.

Help protect your gearbox from wear and grinding, SGR gearbox converts torque reliably and effi­ciently.
We customize our SGR planetary gear units, double enveloping worm gearbox, helical gear motor, modular design helical gear unit, worm gearbox, cycloidal gearbox etc to fit your application and meet your needs. 

These features enable a reliable and safe service life of over 200 000 operational hours. 

Our customers have been placing their trust in SGR gear units since 1997. More than 500 000 gear units of our gearbox are in use reliably around the world, in many cases under very harsh conditions.

Our Honour and Patent :                                                                                                      

ABOUT US:                                                                                         

Shanghai SGR Heavy Industry Machinery Co., Ltd.(formerly known as Shanghai Great Wall Reducer Co., Ltd. ) (sgrgear.en.made-in-china.com)  has accumulated rich original designing & manufacturing experience after being founded in 1996. SGR brand planetary gear reducer has won honor of "Science and Technology Advancement Prize" awarded by the National Speed Reducer & Variator Industry Association.

We produce planetary gear units, planar double-enveloping worm gear speed reducers (cone worm gear reducer), helical-bevel gear motors, worm gear reducers, helical worm gear motors, helical gear motors and many other types of gear units. SGR gear motors and gear units have given satisfactory performance in different industrial applications, including metallurgy, mineral, architecture, shipbuilding, petroleum combination, aviation space-flight, lift routeing, textile mechanic, cement, pharmaceuticals, pumps, general mechanic and other domain.

With the advantage of high quality & competitive price, SGR gear motor and gear units are widely welcomed in the domestic market and exported to Southeast Asia, Middle Asia, North America and European countries etc.

With the excellent testing program, SGR company is always keeping up with the most advanced technology in the world. We have already acquired DNV-ISO9001: 2008 certificate,SGS, CE etc and a patent on SGR branded gearbox. 

We have adopted advanced CAD and CIMS in design & manufacture, which help our engineers develop 3 - 5 series of new efficient products each year. All staff in sales & service department are well trained termly, thus you will be always warmly welcomed and understood by our company.