Why Choose Us

● We are a professional industrial gearbox solution research and development design manufacturer with more than 15 years of experience that will support you with more competitive technical and price support.

● We have rich application experience to provide you with more professional, precise, and better service support

● High-grand components and strict product quality control procedures offer reliable product quality.

● We have years of exporting experience to decades of regions worldwide, and multi-competitive shipping choices, which can give you more reliable, fast, and cost-effective shipping.

● TUV CE approved test item based on IEC 61000 AND IEC 62477 series standards

SGR Gearboxes Projects

SGR gearboxes are used in garbage salvage boats and waterweed salvage boats
SGR gearboxes are used in mud pumps
SGR gearboxes are used in crushers and shredders
SGR gearboxes are used in lead-acid battery plate rolling
SGR gearboxes are used in cranes and construction cranes.
SGR gearboxes are used in trenchless horizontal directional drillings.
SGR gearboxes are used in palm oil equipment.
SGR gearboxes are used in palm oil equipment.

SGR Factory

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Factory Environment
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SGR Gearboxes On Exhibition

SGR gearboxes on PTC ASIA 2024
SGR gearboxes on PTC ASIA 2024
SGR gearboxes on PTC ASIA 2024
SGR gearboxes on PTC ASIA 2024
SGR gearboxes on bauma CHINA2024
SGR gearboxes on bauma CHINA 2024
SGR gearboxes on bauma CHINA 2024
SGR gearboxes on bauma CHINA 2024
SGR gearboxes on ITTC2024
SGR gearboxes on ITTC2024
SGR gearboxes on ITTC2024
SGR gearboxes on ITTC2024
SGR gearboxes on DMP2023
SGR gearboxes on DMP2023
SGR gearboxes on DMP2023
SGR gearboxes on DMP2023
SGR gearboxes on PTC ASIA2023
SGR gearboxes on PTC ASIA2023
SGR gearboxes on PTC ASIA2023
SGR gearboxes on PTC ASIA2023

FAQ

Q. What is a gear reducer or gearbox?

A gear reducer,also commonly know as a gearbox, is a mechanical device used to increase torque while decreasing speed between two rotating shafts. This change in speed-to-torque ratio allows machines to operate more efficiently and safely.
Q. What are the benefits of using a SGR gear reducer?

SGR gear reducers are known for their reliability, efficiency, and durability. They offer superior performance and are crafted using cutting-edge technology, which makes them suitable for a wide range of industrial and mechanical applications.
Q. How shall I select the right gear reducer for my requirements?

When selecting a gear reducer, consider factors such as the required speed and torque output, the operating environment, and the type of motor or machinery it will be connected to. You can also directly consult SGR technical expert.
Q. Can gear reducers be used in high-temperature environments?

Most gear reducers can handle a range of operating conditions, extremely high temperatures may affect their performance and lifespan. Special high-temperature gear reducers are available for such environments.
Q. How shall I maintain gear reducer after I buy it from SGR?

Regular inspection, lubrication, and replacement of worn parts are key to maintaining your speed reducer. SGR provides guidelines for maintenance when you buy gear reducers.
Q. What happens if a gear reducer fails?

Failure of a gear reducer can lead to a reduction in machinery efficiency, excessive noise, and even machinery breakdown. Regular maintenance and inspections can prevent most failures.
Q. Where can I buy SGR gear reducers?

SGR gear reducers can be purchased directly from SGR factory. Request a quote or contact us at any time.
Q. How long does a SGR gear reducer last?

With proper maintenance and under normal operating conditions, SGR gear reducers can last for many years. The exact lifespan depends on usage and environmental factors.
Q. Are SGR reducers customizable?

Yes, SGR offers custom solutions to meet unique operational requirements in different industries. If you need customized reducer solutions, feel free to contact with us.
Q. Does SGR have own factory?

Yes, SGR has its own factory with the area of 15000㎡.

About

Shanghai SGR Heavy Industry Machinery Co., Ltd.

Shanghai SGR Heavy Industry Machinery Co., Ltd. is China Planetary Gearbox Manufacturers and Custom Planetary Gearbox Factory. The company focuses on gear transmission, following the industry trend towards compact, modular, standardized designs with low vibration and low noise. After more than 10 years of deep engagement in the field of gear transmission, we have established a research and development team composed of PhDs and senior engineers. They have successfully developed the Planetary Gearbox, the Four-Axis Linkage Complex Profile Grinding Machine, and the Planar Double-Enveloping Worm Gear Optimization Design System.
Equipped with advanced machinery such as CNC machines, the domestically innovated Toroidal Worm and Hob Measuring Instrument (a first in China), 3D Measuring Machines, and a Power and Efficiency Test System for Gearboxes, the company has formed a specialized system that integrates design, production, and technical services.

Certificate Of Honor

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Planetary Gearbox Industry knowledge

Planetary Gearbox Manufacturer and Custom Gear Reducer Factory

Shanghai SGR Heavy Industry Machinery Co., Ltd. is a high-tech enterprise specializing in gear transmission. As a Planetary Gearbox manufacturer and custom gear reducer factory, we design and produce compact, modular, and standardized planetary reducers that deliver high torque density, low vibration, and low noise for demanding industrial applications.

Our planetary gearbox range covers two main configurations: Coaxial Planetary Gear Reducer and Right Angle Planetary Gear Reducer. Each is engineered for specific mounting and shaft layout requirements, ensuring optimal integration into your machinery.

Our Planetary Gearbox Range

Type	Key Features	Typical Applications
Coaxial Planetary Gear Reducer	Input and output shafts on the same axis; compact design; high torque-to-weight ratio; available with flange, foot, or shaft mounting.	Conveyors, mixers, cranes, winches, and general industrial machinery where space is limited.
Right Angle Planetary Gear Reducer	Input and output shafts at 90°; bevel gear stage combined with planetary stages; ideal for tight spaces requiring direction change.	Slewing drives, rotary tables, packaging machines, and robotic arms.

Engineering and Customization

We understand that every application has unique demands. Our engineering team works with you to configure the right planetary gearbox based on your specific torque, speed, and mounting requirements. We offer:

Ratio range from 3.15 to 9000, covering a wide spectrum of speed reduction needs.
Input power up to 55 kW, with permissible output torque up to 800,000 N·m.
Low-speed shaft options: solid with key, splined, hollow with shrink disc, or splined hollow shaft.
Housing materials: rigid nodular cast iron for durability and vibration damping.
Gear materials: high-quality 20CrMnTi alloy steel, carburized, quenched, and precision ground for long service life.

For example, our N series coaxial reducers are used in agricultural machinery in Argentina, where they withstand heavy dust, vibration, and temperature variations. The fully sealed housing protects internal components, and precision-ground gears with optimized tooth profiles reduce noise and stress.

Quality Assurance and Testing

As a factory, we maintain strict quality control throughout production. Our in-house laboratory is equipped with advanced testing instruments, including a coordinate measuring machine and a gearbox power performance test platform. Each unit undergoes full inspection according to customer requirements, ensuring reliable performance and compliance with international standards.

We are ISO 9001 certified and have TUV CE approval for EMC and safety standards (IEC 61000 and IEC 62477 series). Our quality system ensures traceability from raw materials to final assembly.

Integration and Support

We provide comprehensive technical support to ensure smooth integration of our planetary gearboxes into your equipment. Our services include:

Assistance with motor selection and coupling design.
Guidance on installation, alignment, and lubrication.
Documentation including dimensional drawings, CAD models, and maintenance manuals.
After-sales support with a 1-year warranty and spare parts availability.

Information We Use to Configure Your Solution

To prepare an accurate proposal, we need the following details about your application:

Required output torque and speed.
Input speed and motor type (electric, hydraulic, etc.).
Duty cycle and operating environment (temperature, dust, humidity).
Mounting orientation and space constraints.
Shaft connection requirements (keyed, splined, hollow).
Any applicable standards or certifications.

With this information, we can recommend the most suitable planetary gearbox configuration and provide a detailed quotation.

Frequently Asked Questions

What is the difference between coaxial and right angle planetary gearboxes?

Coaxial units have input and output shafts aligned on the same axis, offering a compact inline solution. Right angle units incorporate a bevel gear stage to change the direction of power flow by 90°, which is useful when space is constrained or when the drive needs to turn a corner.

Can you customize the output shaft or mounting arrangement?

Yes, we offer multiple shaft options (solid, hollow, splined) and mounting configurations (foot, flange, shaft). We can also design custom flanges or adapters to match your existing equipment.

What is the typical lead time for a custom planetary gearbox?

Lead time depends on the complexity and quantity. For standard configurations, we can often ship within a few weeks. Custom designs may require additional engineering and production time. We provide a confirmed schedule with each quotation.

How do you ensure the gearbox meets our performance requirements?

We use your specified torque, speed, and duty cycle to select the appropriate gearbox size and ratio. Our engineering team performs calculations and, if needed, can conduct prototype testing. Final units are tested on our power performance platform before shipment.

Do you provide installation and maintenance documentation?

Yes, each gearbox is supplied with a user manual covering installation, lubrication, and maintenance procedures. We also offer remote technical support to assist with any issues.

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Q. What is a gear reducer or gearbox?

Q. What are the benefits of using a SGR gear reducer?

Q. How shall I select the right gear reducer for my requirements?

Q. Can gear reducers be used in high-temperature environments?

Q. How shall I maintain gear reducer after I buy it from SGR?

Q. What happens if a gear reducer fails?

Q. Where can I buy SGR gear reducers?

Q. How long does a SGR gear reducer last?

Q. Are SGR reducers customizable?

Q. Does SGR have own factory?