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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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Center distance: 100~710 mm Speed ratio: i ≥ 10. Design...
Center distance: 100~710 mm Speed ratio: i ≥ 10. Design...
SGR's C Series double enveloping worm gear reducerMod...
Parameters of SGR's Cast Iron Reducer Double Enveloping...
Description :1, High torque double enveloping worm gear...
As one of famous double enveloping worm gear manufactu...
Product Description Series C double enveloping worm ge...
In term of difference of double enveloping worm gear d...
Product Description Series C double enveloping worm ge...
Product Description 1, High torque double enveloping wo...
Product Description Series C double enveloping worm ge...
● 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
Loading Transportation
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 China-based Double-Enveloping Worm Gearbox manufacturer and factory. We design and produce toroidal worm gear reducers that deliver higher torque density, smoother meshing, and greater efficiency than conventional cylindrical worm units. Our range covers single-stage and double-stage configurations, with center distances from 100 to 710 mm and speed ratios i ≥ 10, engineered for heavy-duty industrial applications.
Our in-house R&D team, including PhDs and senior engineers, developed the Planar Double-Enveloping Worm Gear Optimization Design System. This allows us to tailor tooth geometry, materials, and housing designs to your specific load profile, duty cycle, and mounting constraints. We combine CNC machining, a domestically innovated toroidal worm and hob measuring instrument, and a power/efficiency test system to ensure each gearbox meets its performance target before shipment.
We offer two primary configurations under our Double-Enveloping Worm Gearbox line:
Provides high reduction ratios in a compact, right-angle package. Ideal for applications where space is limited and high torque is required, such as conveyors, mixers, and rotary tables.
Achieves very high reduction ratios by combining two toroidal stages. Suitable for heavy-duty applications like crushers, shredders, and hoists where extreme torque multiplication is needed.
Both types are available with modular designs, allowing for various input shaft configurations, mounting positions, and output flange options. We also offer custom engineering for special applications, such as marine salvage boats, mud pumps, and trenchless horizontal directional drills.
Our double-enveloping worm gearboxes are designed with a concave-convex meshing profile that increases contact area, distributing load more evenly. This results in higher load-carrying capacity, reduced wear, and lower operating noise compared to standard worm gears. We optimize the tooth profile using our proprietary design system, ensuring efficient power transmission even under shock loads.
We can customize:
| Parameter | Single-Stage | Double-Stage |
|---|---|---|
| Center Distance (mm) | 100 – 710 | 100 – 710 |
| Speed Ratio (i) | ≥ 10 | ≥ 10 (combined) |
| Efficiency | Up to 90% (at optimal ratio) | Lower due to two stages |
| Torque Capacity | High | Very high |
| Noise Level | Low | Low |
We confirm exact performance data through our power and efficiency test system, which measures torque, speed, temperature, and vibration under load. This ensures the gearbox meets your specified duty cycle and service factor.
Our gearboxes can be integrated with motors, brakes, and encoders for automated systems. We offer flange or shaft input options compatible with IEC or NEMA motors. For applications requiring precise positioning, we can provide low-backlash versions and mount encoders directly on the input or output shaft. We also supply gearboxes with integrated torque limiters or backstops for safety-critical applications.
We follow a strict quality control process from incoming material inspection to final assembly. Each gearbox undergoes:
Our factory is ISO 9001 certified, and we have TUV CE approved test items based on IEC 61000 and IEC 62477 series standards. We provide test reports and certificates upon request.
We supply detailed installation and maintenance manuals with every gearbox. Our design allows for easy access to lubrication points and inspection covers. We recommend regular oil level checks and periodic oil changes using recommended lubricants. Our team is available for technical support during installation and commissioning, and we offer spare parts kits for long-term serviceability.
To prepare a precise proposal, we need the following project information:
| Data Point | Why It Matters |
|---|---|
| Required output torque (Nm) and speed (rpm) | Determines center distance and ratio |
| Input motor power and speed | Ensures correct input shaft and coupling |
| Duty cycle and load profile | Affects service factor and thermal rating |
| Mounting position and space envelope | Defines housing design and shaft orientation |
| Ambient temperature and environment | Selects seals, lubricants, and cooling |
| Any special requirements (backlash, corrosion, etc.) | Enables custom engineering |
Share your application details, and our engineers will work with you to select or design the optimal gearbox.
Lead time depends on complexity and current production schedule. For standard sizes, we typically ship within 30-45 days. Custom designs may require additional engineering time. We provide a confirmed lead time with your quotation.
Yes, we offer various shaft configurations including solid shafts, hollow bores, and flanged outputs. We can also design gearboxes with multiple input or output shafts for specific machinery.
We recommend synthetic gear oils with high load-carrying capacity, such as PAO or PAG types. The exact viscosity grade depends on operating temperature and speed. Our manual provides specific recommendations for each model.
Yes, we can integrate backstops to prevent reverse rotation and brakes for holding loads. These are common in hoisting and conveyor applications. Specify your requirement, and we will include it in the design.
We run a full-load performance test on our test bench, measuring torque, speed, temperature, and vibration. We provide a test report with each unit, confirming it meets the agreed specifications.
Our portfolio also includes See Details, See Details, 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.
