Product Description
SMR Reducer Specification
1 Output Hub
Standard or alternative hubs with metric bores are available to suit international standard shaft diameters.
2 Precision High Quality Gearing
Computer Designed Helical Gears, Strong Alloy Materials for High Load Capacity, Case Carburized for long life, Ground Profile(some intermediate pinions are shaved) Crown tooth Profile, In Conformance with ISO 1328-1997, 98% Efficiency for Per Stage, Smooth Quiet Operation with Several Teeth in Mesh.
3 Maximum Capacity Housing Design
Close Grain Cast Iron Construction, Excellent Vibration Dampening & Shock Resistance Features, Precision Bored and Dowelled to Ensure Accurate In-Line Assembly.
4 Strong Alloy Steel Shafts
Strong Alloy Steel, Hardened, Ground on Journals, Gear Seatings and Extensions, for
Maximum Load and Maximum Torsional Loads. Generous Size Shaft
Keys for Shock Loading and Conform to ISO Standards.
5 Additional Case Lugs Except H and J Gear Case
Eliminates the Need for Critical Tightening of Torque Arm Bolts. Controls Position of
Standard Torque Arm Mounting within Recommended limits.
6 BackStops
Alternative Parts, Antirun Back Device, AreAvailable on all 13:1 and 20:1 Ratio Units and do not recommend for 5:1 Units.
7 Bearings and Oilseals
Bearings are Adequately Proportioned and Conform to ISO Dimension Plan, Readily
Available WorldWide. Oilseals are Double Lipped Garter Spring Type, Ensuring Effective Oil Sealing.
8 Rubberised End Caps
Self Sealing Intermediate Cover Plates, to Standard ISO Housing Dimensions.
9 Torque Arm Assembly
For Easy Adjustment of the Belt.
SIZE : SMR B C D E F G H
RATIO : 5:1 13:1 20:1
Contact Me
Welcome to contact William for more details!
| Model | B13/B20 | C13/C20 | D13/D20 | E13/C20 | F13/E20 | G13/F20 | H13/G20 | J13/J20 |
| Output(RPM) | 10-115 | 10-110 | 10-110 | 10-105 | 10-105 | 10-100 | 10-100 | 10-100 |
| Power Rating(KW) | 0.29-3.11 | 0.49-4.62 | 0.82-7.81 | 1.25-11.55 | 1.97-17.01 | 3.11-27.09 | 4.9-40.7 | 7.8-60.5 |
| Permissible torque(Nm) | 277 | 468 | 783 | 1194 | 1881 | 2970 | 4680 | 7449 |
| Model | B5 | C5 | D5 | E5 | F5 | G5 | H5 | J5 |
| Output(RPM) | 100-400 | 100-400 | 100-400 | 100-400 | 100-400 | 100-400 | 100-400 | 100-400 |
| Power Rating(KW) | 2.68-7.14 | 4.2-9.66 | 6.62-15.65 | 10.29-24.57 | 15.12-35.91 | 25.2-59.9 | 36.2-81.9 | 62.2-134.2 |
| Permissible torque(Nm) | 256 | 401 | 632 | 983 | 1444 | 2407 | 3457 | 5940 |
| Dimension(mm) | SMR Size | |||||||
| SMR-B | SMR-C | SMR-D | SMR-E | SMR-F | SMR-G | SMR-H | SMR-J | |
| Standard size of shaft | 30 | 40 | 50 | 55 | 65 | 75 | 85 | 100 |
| Alternative size of shaft | 40 | 50 | 55 | 65 | 75 | 85 | 100 | 120 |
| Input shaft keyway | 6×3.5×50 | 6×3.5×59 | 8x4x63 | 8x4x70 | 10x5x70 | 12x5x90 | 14×5.5×100 | 16x6x100 |
Company Profile
l The largest manufacturer and exporter of worm gear reducers in Asia.
l Established in 1976, we transformed from a county owned factory to private 1 in 1996. HangZhou SINO-DEUTSCH POWER TRANSMISSION EQUIPMENT CO.,LTD is our new name since 2001.
l We are the first manufacturer of reducers and gearboxes in China who was given export license since year 1993.
l “Fixedstar” brand gearboxes and reducers are the first owner of CHINA TOP BRAND and Most Famous Trade Mark for reducers.
First to achieve ISO9001 and CE Certificate among all manufacturers of gearboxes in China.
As a professional manufacturer of worm gearbox and worm gear reducers in China, we mainly produce reduction gearbox,aluminum case worm gearboxes,arc gear cylindrical worm gearboxes, worm gear reducers, in line helical gearboxes, and cyclo drive reducers, etc. These products feature rational structure, stable performance, and reliable quality, and so on. They are widely used in power, mining, metallurgy, building material, chemical, food, printing, ceramic, paper-making, tobacco, and other industries.
We have 600 workers in our factory, which covers 70,000 square CHINAMFG in HangZhou. We have been making 2,500 units of reducers everyday since 2012. We are proudly exporting 70% of our products to more than 40 countries all over the word. Our customers come from Italy, Germany, USA, Canada, Spain, UK, Mexico, Brazil, Argentina, Turkey, Singapore and other main industrial countries in the world. 30% of them are OEM made for direct manufacturers of other products.
We warmly welcome customers from other parts of the world to visit us. Seeing is believing. We are very confident that after visiting our facility, you will have confidence on our products. We have the latest automatic equipments and experienced workers to ensure the stable quality and large output. We have the most sophisticated technical and engineering team to support most demanding requirement on standard and OEM products.
Looking CHINAMFG to meeting you in HangZhou, China.
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| Application: | Reducer |
|---|---|
| Hardness: | Hardened |
| Type: | Bevel Gear |
| Size: | B C D E F G H J |
| Material: | Cast Iron |
| Manipulate Way: | Robotics |
| Customization: |
Available
| Customized Request |
|---|

Customization of Speed Reducer Gearboxes for Specific Industrial Needs
Yes, speed reducer gearboxes can be customized to meet specific industrial requirements. Manufacturers offer various customization options to ensure that the gearboxes align with the unique needs of different applications:
- Design Flexibility: Manufacturers can modify the design of speed reducer gearboxes to accommodate specific space constraints, mounting arrangements, and input-output shaft configurations.
- Gear Ratio Selection: Custom gear ratios can be selected to optimize the speed reduction or increase for a particular application, allowing for tailored torque and speed requirements.
- Material Selection: Gearbox components can be crafted from different materials based on factors such as corrosion resistance, temperature tolerance, and load-bearing capacity.
- Sealing and Protection: Customized sealing solutions, such as IP-rated enclosures and specialized gaskets, can be integrated to enhance protection against dust, moisture, and harsh environments.
- Lubrication Systems: Gearboxes can be equipped with specialized lubrication systems to ensure consistent and efficient lubrication in specific operating conditions.
- Accessories and Attachments: Manufacturers can add accessories like external cooling fans, temperature sensors, and mounting flanges to enhance gearbox performance and monitoring.
- Compliance with Standards: Customized gearboxes can be designed to meet industry-specific standards, certifications, and safety requirements.
By collaborating with manufacturers and providing detailed specifications, industries can obtain speed reducer gearboxes that are tailor-made to their specific needs, ensuring optimal performance and reliability in their applications.

Impact of Gear Ratios on Performance of Speed Reducer Gearboxes
Gear ratios in speed reducer gearboxes play a crucial role in determining their performance characteristics and capabilities. The gear ratio represents the ratio of the number of teeth on the driving (input) gear to the number of teeth on the driven (output) gear within the gearbox. This ratio directly affects how the gearbox transforms the input speed and torque into the desired output speed and torque.
Speed Reduction: A higher gear ratio in a speed reducer gearbox results in greater speed reduction. In this case, the input shaft’s higher rotational speed is converted into a lower rotational speed at the output shaft. This is advantageous for applications that require increased torque and reduced speed, such as heavy-duty machinery and conveyor systems.
Speed Increase: Conversely, a lower gear ratio in a speed reducer gearbox leads to speed increase. The input shaft’s rotational speed is transformed into a higher rotational speed at the output shaft, albeit with decreased torque. This configuration is useful in applications where higher speed is necessary, such as certain types of pumps and fans.
The choice of gear ratio is a critical design consideration when selecting a speed reducer gearbox for a specific application. It determines the trade-off between speed and torque, allowing engineers to tailor the gearbox’s performance to match the requirements of the machinery and equipment it will drive.

Handling Variations in Input and Output Speeds with Speed Reducer Gearboxes
Speed reducer gearboxes are designed to efficiently handle variations in input and output speeds, ensuring that mechanical systems can operate at desired levels of torque and rotational motion. Here’s how they accomplish this:
Versatile Gear Ratios: Speed reducer gearboxes are equipped with a combination of gears, typically including multiple stages of gear reduction. Each stage contains gears with specific gear ratios. By strategically selecting gear ratios for each stage, the gearbox can adjust the speed and torque output according to the input from the motor or initial power source.
Multi-Stage Reduction: In many speed reducer gearboxes, the input shaft connects to a series of gears, each progressively smaller in size. As the input gear turns, it drives the next gear in the sequence. This process continues through multiple stages, resulting in a significant reduction in rotational speed while increasing torque output.
Helical and Planetary Gears: Some speed reducer gearboxes use helical gears or planetary gear sets. Helical gears have angled teeth that engage gradually, reducing noise and providing smoother transitions between gears. Planetary gears consist of a central sun gear, multiple planet gears, and an outer ring gear. They allow for compact designs and efficient speed reduction.
Frictional and Mechanical Efficiency: Speed reducer gearboxes are designed to minimize friction and mechanical losses during operation. High-quality materials, precision manufacturing, and proper lubrication contribute to higher efficiency and reduced energy waste.
Adjustable Configurations: Speed reducer gearboxes can be configured to achieve different output speeds and torque levels based on the specific requirements of the application. This adjustability allows for customization and fine-tuning of performance.
Torque and Speed Ratings: Manufacturers provide torque and speed ratings for their speed reducer gearboxes, indicating the maximum torque load they can handle while maintaining specified speed reductions. These ratings guide the selection of an appropriate gearbox for a given application.
Overall, speed reducer gearboxes effectively manage variations in input and output speeds through the use of gear ratios, multi-stage reduction, specialized gear designs, and careful engineering. This enables them to adapt to the changing demands of mechanical systems while providing precise control over motion and torque.


editor by CX 2024-02-15