Product Description
Detailed Images
Detailed Images of Three Types Helical shaft mount gear unit gearbox
Detailed Dimensions of Helical shaft mount gear unit gearbox
Product Description
Helical shaft mount gear unit gearbox
1. Precision High Quality Gearing
Computer designed helical gears, strong alloy materials for high load capacity, ground profile (some intermediate pinions are shaved). CHINAMFG tooth profile, in conformance with ISO 1328-1997, 98% efficiency for per stage, smooth quiet operation with several teeth in mesh.
2. Output Hub
*Standard or alternative output hole diameter for choice as follow.
ITEM | Standard output hole diameter | Alternative output hole ø |
B5 | ø30 | ø25/35/40 |
B13/20 | ø30 | ø25/35/40 |
C5 | ø40 | ø35/45/50 |
C13/20 | ø40 | ø35/45/50 |
D5 | ø50 | ø45/55/60/65 |
D13/20 | ø50 | ø45/55/60/65 |
E5 | ø55 | ø50/60/65 |
E13/20 | ø55 | ø50/60/65 |
F5 | ø65 | ø60/70/75 |
F13/20 | ø65 | ø60/70/75 |
G5 | ø75 | ø70/80/85 |
G13/20 | ø75 | ø70/80/85 |
H5 | ø85 | ø80/90/95/100 |
H13/20 | ø85 | ø80/90/95/100 |
J5 | ø100 | ø90/95/105/110/15710 |
J13/20 | ø100 | ø90/95/105/110/15710 |
3. Strong Alloy Steel Shafts
Strong alloy steel, hardened, ground on journals, gear seatings and extensions, for maximum torsional loads. Generous size shaft keys for shock loading and conform to ISO standards.
4, Back Stops
Alternative parts, anti-run back device, are available on all 13:1 and 20:1. Ratio units and do not recommend for 5:1.
5. Torque Arm Assembly
For easy adjustment of the belt.
Packing & Delivery
Packing Images of Helical shaft mount gear unit gearbox
Inner Packing: PP bag with carton;
Outer Packing: Caton boxed and wooden cases;
Shipment: 20-30 days CHINAMFG receiving the deposit.
Related Products
Fixedstar FCN Worm Reducer
Fixedstar Right Angle Geared Motor
Fixedstar Inch Size Worm Reducer
Fixedstar Inline Geared Motor
Fixedstar Shaft Mounted Geared Motor
Fixedstar Cyclodial Reducer
About Us
CHINAMFG GROUP is the first and largest worm gearbox manufacturer in China, established in 1976, specialising in the production of a wide variety of transmission machinery. With more than 40 years experience in the industry, our assets now total 117.2 million dollars, and we have 2 subsidiary companies, 8 holding companies, and 12 joint-stock companies.
We can produce 400,000 units of worm gearboxes, 100,000 units of gear reducers, 50,000 units of other speed reducers, 150,000 units of flexible couplings, and 100,000 units of speed-reducer accessories every year.
70% of our products have been exported to 40 more countries, and our customers come from Italy, Germany, USA, Canada, Spain, UK, India, Mexico, Brazil, Argentina, Turkey, Singapore and other main industrial countries. 30% of them are OEM made for direct manufacturers of other products.
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| Application: | Motor, Motorcycle, Machinery |
|---|---|
| Hardness: | Hardened Tooth Surface |
| Installation: | Vertical Type |
| Layout: | Parallel |
| Gear Shape: | Bevel Gear |
| Step: | Double-Step |
| Customization: | Available | Customized Request |
|---|

Calculating Gear Ratio in a Worm Reducer
The gear ratio in a worm reducer is determined by the number of teeth on the worm wheel (also known as the worm gear) and the number of threads on the worm shaft. The gear ratio formula for a worm reducer is:
Gear Ratio = Number of Teeth on Worm Wheel / Number of Threads on Worm Shaft
For example, if the worm wheel has 60 teeth and the worm shaft has a single thread, the gear ratio would be 60:1.
It’s important to note that worm reducers have an inherent self-locking property due to the angle of the worm threads. As a result, the gear ratio also affects the mechanical advantage and the system’s ability to resist backdriving.
When calculating the gear ratio, ensure that the worm reducer is properly designed and that the gear ratio aligns with the desired mechanical characteristics for your application. Additionally, consider factors such as efficiency, load capacity, and speed limitations when selecting a gear ratio for a worm reducer.

Worm Gearbox Applications in Robotics and Automation
Worm gearboxes play a crucial role in various robotics and automation applications due to their unique characteristics and benefits. Here are some common applications where worm gearboxes are used:
- Robotic Arm Movement: Worm gearboxes are employed in robotic arms to provide precise and controlled movement. The self-locking property of worm gearboxes helps maintain the arm’s position without requiring additional brakes.
- Conveyor Systems: In automated production lines, worm gearboxes are used to drive conveyor belts and move materials or products along assembly lines with accuracy.
- Precision Positioning: Worm gearboxes are used in precision positioning systems, such as those found in pick-and-place robots and CNC machines. They ensure accurate and repeatable movements.
- Pan and Tilt Mechanisms: Worm gearboxes are utilized in pan and tilt mechanisms of surveillance cameras, robotic cameras, and sensors. The self-locking feature helps stabilize and maintain the desired angle.
- Automated Gates and Doors: Worm gearboxes are used in automated gate and door systems to control their opening and closing movements smoothly and safely.
- Material Handling: Robots in warehouses and distribution centers use worm gearboxes to manipulate and lift objects, enhancing efficiency in material handling.
- Medical Robotics: Worm gearboxes are employed in medical robots for surgical procedures, diagnostic equipment, and rehabilitation devices, ensuring precise and controlled movements.
- Industrial Robots: Industrial robots rely on worm gearboxes for various tasks, including welding, painting, assembly, and packaging, where precise movements are essential.
- Automated Testing Equipment: In testing and inspection applications, worm gearboxes provide the necessary movement and positioning for accurate testing and measurements.
- Food and Beverage Industry: Worm gearboxes are used in automated food processing and packaging systems, ensuring hygienic and precise movement of products.
Worm gearboxes are preferred in these applications due to their compact size, high torque output, self-locking feature, and ability to provide a right-angle drive. However, selecting the right gearbox requires considering factors such as load, speed, efficiency, and environmental conditions.

Preventing Backlash in a Worm Gearbox
Backlash in a worm gearbox can lead to reduced accuracy, positioning errors, and decreased overall efficiency. Here are steps to prevent or minimize backlash:
- High-Quality Components: Use high-quality worm gears and worm wheels with tight manufacturing tolerances. Precision components will help reduce backlash.
- Proper Meshing: Ensure the worm gear and worm wheel are properly aligned and meshed. Improper meshing can lead to increased backlash.
- Preload: Applying a small amount of preload to the worm gear can help reduce backlash. However, excessive preload can increase friction and wear.
- Anti-Backlash Mechanisms: Consider using anti-backlash mechanisms, such as spring-loaded systems or adjustable shims, to compensate for any inherent backlash.
- Lubrication: Proper lubrication can reduce friction and play a role in minimizing backlash. Use a lubricant that provides good film strength and reduces wear.
- Maintenance: Regularly inspect and maintain the gearbox to identify and address any changes in backlash over time.
It’s important to strike a balance between reducing backlash and maintaining smooth operation. Consulting with gearbox experts and following manufacturer guidelines will help you optimize your worm gearbox’s performance while minimizing backlash.


editor by CX 2024-04-04