China high quality Light-Load Slewing Gear for Space Communications 17′′ worm and wheel gear

Product Description


.; Introduction of CHINAMFG heavy load slewing drive
Slewing Drive is also called slewing gear,; worm gear,; worm drive,; rotary drive,; slew drive,; worm gear reducer and rotary drive unit.; At present the majority of such devices are caller Slewing Drive.;
LYHY heavy load slewing drive is usually composed of a slewing ring,; worm,; casting housing,; and standard components likebearing and bolts,; etc.; While used in photovoltaic power generation system,; the slewing drive is usually used in combination with DC planetary speed reducer motor and AC speed reducer motor.; While used in engineering equipment,; it is regularly used in combination with hydraulic motor to function as power driving system.;

2.; Structure
According to the raceway diameter of the slewing ring,; a heavy load slewing drive include M3 ich,; M5 inch,; M7 inch,; M9 inch,; M12 inch,; M14 inch,; M17 inch,; M21 inch,; M25inch,; H14 inch,; H17 inch,; H21 inch and H25 inch.;

3.; Features:;
Heavy load slewing drive is a special bearing.; And a slewing drive is usually composed of a slewing ring,; worm,; casting housing,; and standard components like bearing and bolts,; etc.;
Slewing drive is able to sustain more axial load,; radial load and tilting moment.; Turntable or frame rotates at azimuth and elevation driven by slewing drive.;

4.; Application:;
Slewing drives are widely used in solar power generation tracking system,; timber grab,; special vehicle,; heavy-duty flat-panel truck,; container cranes,; overhead working truck,; truck mounted crane,; automobile crane and aerial vehicles,; cranes,; gantry cranes,; small wind power stations,; space communications,; satellite receiver,; etc.;

LYHY can also design and make other standard and non-standard Slewing Drives as per customer’s different technical requirements.; For more information about the slewing drive,; please contact CHINAMFG Bearing sales department.; We will give you the best technical support.;

Model Rated output torque /KN-m Tilting Moment torque /KN-m Load /KN Gear ratio Self-locking gears Weight (KG);
Static load rating,; axial Static load rating,;radial Dynamic load rating,; axial Dynamic load rating,;radial
3″ 0.;25 0.;5 30 16.;6 9.;6 8.;4 62:;01:;00 yes 12
5″ 0.;37 0.;8 76 22.;6 13.;8 11.;8 62:;01:;00 yes 18
7″ 1.;3 13.;5 133 53 32 28 73:;01:;00 yes 23
9″ 9.;2 33.;9 338 135 81 71 61:;01:;00 yes 50
12″ 11.;7 54.;3 475 190 114 100 78:;01:;00 yes 60
14″ 12.;7 67.;8 555 222 133 117 85:;01:;00 yes 73
17″ 18.;5 135.;6 975 390 235 205 102:;01:;00 yes 110
21″ 29 203 1598 640 385 335 125:;01:;00 yes 158
25″ 34 271 2360 945 590 470 150:;01:;00 yes 230

Application: Space Communications
Hardness: Hardened
Manufacturing Method: Rolling Gear
Toothed Portion Shape: Curved Gear
Material: Bearing Steel
Type: Worm And Wormwheel


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worm gear

Can worm gears be used in precision manufacturing equipment?

Yes, worm gears can be used in precision manufacturing equipment. Here’s a detailed explanation of their use in precision manufacturing:

1. Precision Motion Control: Worm gears can provide precise motion control in manufacturing equipment. Their design allows for high gear ratios, which enables fine adjustments and precise positioning. This is particularly useful in applications where accurate and repeatable movement is required, such as CNC machines, robotic arms, and coordinate measuring machines (CMMs).

2. Load Holding and Backdriving Prevention: Worm gears have a self-locking characteristic, meaning they can hold loads in position without the need for additional brakes or clutches. This feature is advantageous in precision manufacturing equipment where holding a position is critical. The self-locking property also helps prevent backdriving, ensuring stability and accuracy during operation.

3. Compact Design: Worm gears have a compact design, which can be beneficial in space-constrained manufacturing equipment. Their worm and worm wheel configuration allows for a compact footprint, making them suitable for applications where size limitations exist.

4. High Torque Transmission: Worm gears can transmit high torque, making them suitable for heavy-duty precision manufacturing equipment. The meshing of the worm and worm wheel generates a large contact area, enabling efficient power transfer and load handling capabilities.

5. Reduced Noise and Vibration: Worm gears operate with a sliding motion rather than a rolling motion, resulting in reduced noise and vibration levels. This characteristic is advantageous in precision manufacturing equipment, as it helps maintain a quieter working environment and minimizes potential disturbances that could affect the precision of the manufacturing process.

6. Lubrication and Maintenance: Proper lubrication is crucial for the efficient and reliable operation of worm gears in precision manufacturing equipment. Lubricants help reduce friction and wear between the gear teeth, ensuring smooth and accurate motion. Regular maintenance and lubrication schedules should be followed to optimize gear performance and extend their service life.

While worm gears offer several advantages in precision manufacturing equipment, it’s important to consider the specific requirements of the application. Factors such as gear ratio, efficiency, backlash, and operating conditions should be carefully evaluated to ensure that worm gears are the appropriate choice for achieving the desired precision and performance.

Overall, worm gears can be successfully utilized in precision manufacturing equipment, providing precise motion control, load holding capabilities, compactness, and high torque transmission. When properly selected, installed, and maintained, worm gears can contribute to the accuracy, reliability, and efficiency of precision manufacturing processes.

worm gear

How do you ensure proper alignment when connecting a worm gear?

Ensuring proper alignment when connecting a worm gear is crucial for the smooth and efficient operation of the gear system. Here’s a detailed explanation of the steps involved in achieving proper alignment:

  1. Pre-alignment preparation: Before connecting the worm gear, it is essential to prepare the components for alignment. This includes cleaning the mating surfaces of the gear and shaft, removing any debris or contaminants, and inspecting for any signs of damage or wear that could affect the alignment process.
  2. Measurement and analysis: Accurate measurement and analysis of the gear and shaft alignment are essential for achieving proper alignment. This typically involves using precision alignment tools such as dial indicators, laser alignment systems, or optical alignment instruments. These tools help measure the relative positions and angles of the gear and shaft and identify any misalignment.
  3. Adjustment of mounting surfaces: Based on the measurement results, adjustments may be required to align the mounting surfaces of the gear and shaft. This can involve shimming or machining the mounting surfaces to achieve the desired alignment. Care should be taken to ensure that the adjustments are made evenly and symmetrically to maintain the integrity of the gear system.
  4. Alignment correction: Once the mounting surfaces are prepared, the gear and shaft can be connected. During this process, it is important to carefully align the gear and shaft to minimize misalignment. This can be done by observing the alignment readings and making incremental adjustments as necessary. The specific adjustment method may vary depending on the type of coupling used to connect the gear and shaft (e.g., keyway, spline, or flange coupling).
  5. Verification and final adjustment: After connecting the gear and shaft, it is crucial to verify the alignment once again. This involves re-measuring the alignment using the alignment tools to ensure that the desired alignment specifications have been achieved. If any deviations are detected, final adjustments can be made to fine-tune the alignment until the desired readings are obtained.
  6. Secure fastening: Once the proper alignment is achieved, the gear and shaft should be securely fastened using appropriate fasteners and tightening procedures. It is important to follow the manufacturer’s recommendations for torque values and tightening sequences to ensure proper clamping force and prevent any loosening or slippage.

It is worth noting that the alignment process may vary depending on the specific gear system, coupling type, and alignment tools available. Additionally, it is important to refer to the manufacturer’s guidelines and specifications for the particular gear and coupling being used, as they may provide specific instructions or requirements for alignment.

Proper alignment should not be considered a one-time task but an ongoing maintenance practice. Regular inspections and realignment checks should be performed periodically or whenever there are indications of misalignment, such as abnormal noise, vibration, or accelerated wear. By ensuring proper alignment during the initial connection and maintaining it throughout the gear’s operational life, the gear system can operate optimally, minimize wear, and extend its service life.

worm gear

How do you choose the right size worm gear for your application?

Choosing the right size worm gear for your application involves considering several factors to ensure optimal performance and longevity. Here are the key considerations:

Load Requirements:

Determine the maximum load that the worm gear will need to transmit. This includes both the torque (rotational force) and the axial load (force along the axis of the gear). Calculate or estimate the peak and continuous loads that the gear will experience during operation. Consider factors such as shock loads, dynamic forces, and variations in load conditions. This information will help determine the required load-carrying capacity of the worm gear.

Gear Ratio:

Determine the desired gear ratio for your application. The gear ratio determines the speed reduction and torque multiplication provided by the worm gear system. Consider the specific requirements of your application, such as the desired output speed and the torque needed to drive the load. Select a worm gear with a gear ratio that meets your application’s requirements while considering the limitations of the available gear options.


Consider the efficiency requirements of your application. Worm gears typically have lower efficiency compared to other types of gears due to the sliding action between the worm and worm wheel. If efficiency is critical for your application, choose a worm gear design and materials that offer higher efficiency, such as a double enveloping worm gear.

Space Constraints:

Evaluate the available space for the worm gear assembly in your application. Consider the dimensions of the worm gear, including the diameter, length, and mounting requirements. Ensure that the chosen worm gear can fit within the available space without compromising other components or functionality.

Speed and Operating Conditions:

Consider the operating speed and environmental conditions in which the worm gear will operate. Some worm gears have speed limitations due to factors such as heat generation and lubrication requirements. Ensure that the selected worm gear is suitable for the anticipated speed range and can withstand the temperature, humidity, and other environmental factors of your application.

Manufacturing Standards and Quality:

Select a worm gear that conforms to recognized manufacturing standards and quality requirements. Look for worm gears from reputable manufacturers that offer reliable and durable products. Consider factors such as material quality, surface finish, and precision in the gear manufacturing process.

By carefully evaluating these factors and considering the specific requirements of your application, you can choose the right size worm gear that meets your performance, load, and space requirements, resulting in a reliable and efficient gear system.

China high quality Light-Load Slewing Gear for Space Communications 17′′ worm and wheel gearChina high quality Light-Load Slewing Gear for Space Communications 17′′ worm and wheel gear
editor by CX 2023-10-03