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Mining equipment operates in some of the most demanding industrial environments. Heavy loads, high torque, continuous operation, dust, vibration, shock loads, a...
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SGR develops and manufactures specialized worm gear red...
● 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 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.
Factory Environment
Factory Environment
Monitoring Unit
Monitoring Unit
Loading Transportation
Loading Transportation
Loading Transportation
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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
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.
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.
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.
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.
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.
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.
SGR gear reducers can be purchased directly from SGR factory. Request a quote or contact us at any time.
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.
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.
Yes, SGR has its own factory with the area of 15000㎡.
Mining equipment operates in some of the most demanding industrial environments. Heavy loads, high torque, continuous operation, dust, vibration, shock loads, a...
READ MOREWhen purchasing a gearbox, many buyers compare products based on basic specifications such as rated torque, gear ratio, input speed, output speed, power, and mo...
READ MOREA mixer manufacturer came to us after two standard-issue gear reducers failed on the same agitator within eighteen months. The catalog ratings looked correct, b...
READ MOREFor decades, imported planetary gearboxes have been widely used in heavy-duty industrial equipment because of their established technology, product reliability,...
READ MOREShanghai SGR Heavy Industry Machinery Co., Ltd. is a high-tech enterprise and a professional Single-Stage Cylindrical Worm Gear Reducer manufacturer in China. Our single-stage cylindrical worm gear reducers deliver high torque in a compact, right-angle drive package, engineered for applications where space is limited and reliability is non-negotiable.
With over 15 years of gear transmission experience, we design and produce these reducers for industries such as material handling, construction, mining, and marine equipment. Our factory in Shanghai integrates R&D, precision machining, and full-load testing under one roof, ensuring each unit meets your operational demands.
Explore our related Products to see the broader range of gearboxes we offer.
Our single-stage cylindrical worm gear reducers are available in multiple center distances and ratios, covering a wide torque spectrum. They are designed as a modular family, allowing customization of shafts, flanges, and mounting configurations to match your existing equipment.
| Model Series | Center Distance (mm) | Ratio Range | Typical Applications |
|---|---|---|---|
| SGR-WS | 40 – 250 | 10:1 – 60:1 | Conveyors, packaging machinery |
| SGR-WM | 63 – 315 | 10:1 – 60:1 | Cranes, hoists, winches |
| SGR-WL | 100 – 500 | 10:1 – 60:1 | Crushers, shredders, mud pumps |
We also offer specialized versions for forklift attachments, as seen in our Worm Gear Reducer for Forklift Attachments, which demonstrates our ability to adapt the base design to unique OEM requirements.
Single-stage cylindrical worm gear reducers are chosen for their high reduction ratio in a single mesh, right-angle output, and self-locking capability (depending on ratio and lead angle). Our designs are optimized for:
Our engineering team uses advanced CAD and FEA to optimize gear tooth geometry, ensuring smooth meshing, low noise, and high efficiency. We also apply a planar double-enveloping worm optimization design system to refine the tooth profile, reducing vibration and extending service life.
We select materials based on the duty cycle and environmental conditions. Worm gears are typically made from high-strength bronze alloys (e.g., ZCuSn10P1) for excellent wear resistance and low friction, while worms are case-hardened alloy steel (e.g., 20CrMnTi) ground to achieve high surface hardness and accuracy. Housings are cast iron or fabricated steel for rigidity and vibration damping.
Key specifications we confirm during the design phase include:
Our single-stage reducers are available with center distances up to 500 mm, handling input powers from fractional kW to over 100 kW depending on ratio and duty. We achieve transmission efficiencies of 75-90% for single-stage worm gears, with higher efficiency at lower ratios.
Precision is ensured through our in-house measurement capabilities, including a domestically innovated toroidal worm and hob measuring instrument (a first in China) and 3D coordinate measuring machines. This allows us to control tooth profile accuracy and assembly tolerances, resulting in smooth, quiet operation even under full load.
We offer a wide range of configuration options to match your system:
For automation integration, we can provide reducers with encoder mounting provisions or integrated speed sensors. Our gearboxes are compatible with standard AC motors, servo motors, and variable frequency drives, and we can supply the complete motor-gearbox assembly if required.
As an ISO 9001 certified manufacturer, we implement strict quality control from incoming materials to final assembly. Each reducer undergoes a full-load performance test on our power and efficiency test system, verifying torque, efficiency, temperature rise, and noise levels. We also conduct dimensional inspections using 3D measuring machines and gear tooth profile checks with our specialized instruments.
Our testing procedures ensure that every unit meets the specified performance criteria before shipment. We provide test reports and certificates upon request, including material certifications and dimensional inspection results.
We provide detailed installation and maintenance manuals with every reducer. Our technical team is available for on-site commissioning support and troubleshooting. We recommend regular oil changes (typically every 10,000 hours or annually) and periodic inspection of seals and bearings.
Spare parts are available for all models, and our modular design ensures quick replacement of worn components. We maintain a stock of common wear parts to minimize downtime.
To prepare an accurate quotation and technical proposal, we need the following details from you:
With this information, our engineers can select the optimal model, confirm the service factor, and provide a detailed dimensional drawing for your approval.
Efficiency ranges from 75% to 90% depending on the ratio and lead angle. Higher ratios (e.g., 60:1) have lower efficiency due to increased sliding friction. We can optimize the lead angle for your specific speed and torque requirements to maximize efficiency.
Yes, self-locking is achievable with higher ratios (typically above 30:1) and low lead angles. However, self-locking is not guaranteed under vibration or shock loads. We can advise on the appropriate ratio and add a backstop if absolute safety is required.
Standard models with common ratios are typically in stock and ship within 2-3 weeks. Customized units with special shafts, materials, or accessories usually require 4-8 weeks depending on complexity. We provide a confirmed lead time with your quotation.
Yes, we can supply reducers with explosion-proof motor adapters and special seals for hazardous areas. Please specify the required ATEX or IECEx classification, and we will configure the appropriate solution.
Every reducer is tested on our power and efficiency test system under load. We measure torque, speed, temperature, and noise, and provide a test report. This ensures the unit meets the agreed performance criteria before shipment.
Yes, we can reverse-engineer from your sample or drawings. Our R&D team will measure the gear geometry and create a compatible design. We often replace legacy units from other manufacturers with improved materials and precision.
Our portfolio also includes VIEW MORE for applications with different operating ranges, interfaces or integration requirements.
SGR is an ISO 9001 certified, DNV-accredited industry gearbox manufacturer since 1996. We supply different gear reducers to brands worldwide.
