China Good quality Sc14 Slewing Drive Gear Motor for Aerial Working Platform with high quality

Product Description

CHINAMFG Drive slew worm drive system is a compactly constructed unit which consists of a slewing ring, base plate and worm.
This unit brings the advantages of a slewing ring and a worm into 1 unit. It is suitable for applications which demand slow rotation with a continuous or cyclical movement capable of handling combined loads.

Slewing drives are perfect for situations requiring both load-holding and rotational torque from the same gearbox.Ttypical applications include solar trackers, wind turbines, satellite and radar dishes, truck cranes, man lifts, utility equipment, hydraulic equipment attachments, oil tool equipment, tire handlers, digger derricks, and automotive lifts.


The performance ranges from 6kNm to 220kNm of holding torque, 200Nm to 63kNm of output torque, 500Nm to 271kNm of overturning moment load capacity, and gearbox reduction ratios of 30:1 up to 156,600:1. The mounting can be done horizontally, vertically, or across a combination of multiple axes.

The product is with standard dimensions for coupling an electric or hydraulic motor as well as coupling a whole system to equipment. Due to its compactness, high rigidity and other mentioned advantages, a worm drive system is used in varying equipment such as mobile assembly platforms, satellite system, hydraulic loading cranes on haulage vehicles, small marine cranes, extendable rotating ladders, in wheel units of large marine portal transporters.

CHINAMFG lies at the largest mechanical center in China,which has been engaged in producing and designing slewing bearing for the past 30 years.The company specializes in 6 types slewing bearings,the productions are widely used in engineering machinery,building machinery,metallurgical and mining machinery,shipping port machinery and so on.

Coresun company have a full assembly line production capacity from forging,heat treatment,machining process,tooth making and to finished product assembly.The series of products produced by our company have passed the quality inspection identification of the national special type mechanical part quality testing and played a leading role in the industry.Our products are sold throughout the country and exported to more than 42 countries,such as Malaysia,France,Singapore,Germany,Italy and so on.

1. Rotation 360 degrees
2. Connection of a driving motor from the left or right side
3. During installation, it is not necessary to adjust the gearing clearance; this is already set by the producer before factory
4. Simple installation and low maintenance
5. Rational space utilization
6. The gear is self-locking; therefore a brake is not necessary
7. Easy and fluent method of starting and stopping

Model Slewing Drive SC14 Brand Coresun Drive
Holding Torque 48Kn.m Tilting Moment Torque 67.8Kn.m
Self-locking Yes Gear Ratio 85:1
Outer Dia. 390mm Inner Dia. 295mm
IP Class IP65 Precision ≤0.12°

There are no special limitations of mounting angles and positions of this series of products.  It can be mounted horizontally, vertically and inclined.  Enclosed slewing drives are assembled of enclosed housing, slewing bearing, worm shaft and other parts.  Users can choose electric motors or hydraulic motors as the driving power.  It can slew 360 degrees clock-wise or otherwise.  The slewing drive is compact and it is also easy to mount and maintain in comparison with other types of driving devises.
It adopts enclosed design and the protection level can reach IP65.  It can effectively prevent dust, rain and other hostile environments.  It suits field usage such as desert, alpine and other hostile environments.
1.Products are easy to mount and maintain.
2.The design and mounting dimensions are international or domestic universal dimensions.  It is easy for the users’ replacements in the future.

Tilting Moment Torque: Torque is the load multiplied by distance between the position of load and the center of slewing bearing. If the qorque generated by load and distance is greater than the rated tilting moment torque, slewing drive will be overturned.

Radial load: Load vertical to the axis of slewing bearing

Axial load: Load parallel to the axis of slewing bearing

Holding torque:It is the reverse torque.When the drive is rotating reversely, and parts are not damaged,The maximum torque achieved is called holding torque.

Self-locking: Only when loaded, the slewing drive is not able to reverse rotate and thus called self-locking.

Coresun Drive Slewing Bearing Production Precision and Backlash Testing.Ensuring smooth operation.

Coresun Drive testing reports for WH products on measurement, material and finished production.


It is sincerely looking CHINAMFG to cooperating with you and providing the best quality product & service with all of our heart!

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Holding Torque: 48kn.M
Tilting Moment Torque: 67.8kn.M
Static Axial Load: 920kn
Static Radial Laod: 343kn
Slewing Bearing: Worm Gear
Application: Man Lift Crane


Customized Request

worm gear

How do you prevent backlash and gear play in a worm gear mechanism?

Preventing backlash and gear play is essential for maintaining the accuracy and performance of a worm gear mechanism. Here’s a detailed explanation of how to prevent backlash and gear play in a worm gear mechanism:

Backlash refers to the play or clearance between the teeth of the worm and the worm wheel in a worm gear mechanism. It can result in inaccuracies, positioning errors, and reduced efficiency. Here are some measures to prevent or minimize backlash and gear play:

  • Precision manufacturing: Accurate and precise manufacturing of the worm and worm wheel is crucial to minimize backlash. High-quality machining techniques, such as grinding, can be employed to achieve precise tooth profiles and minimize any gaps between the teeth. Careful attention to the design and manufacturing tolerances can help reduce backlash.
  • Tight meshing clearance: Proper adjustment of the meshing clearance between the worm and the worm wheel can help minimize backlash. The meshing clearance should be set as small as possible without causing interference or excessive friction. Close clearance ensures a tighter fit between the teeth, reducing the amount of play or backlash.
  • Anti-backlash mechanisms: Anti-backlash mechanisms can be incorporated into the worm gear system to reduce or eliminate backlash. These mechanisms typically consist of spring-loaded components or adjustable devices that help compensate for any clearance between the teeth. They apply a constant pressure to keep the teeth engaged tightly, reducing the effects of backlash.
  • Preload: Applying a preload to the worm gear system can help minimize backlash. Preload involves applying a slight compressive force or tension to the components, ensuring they remain engaged and eliminating any clearance. However, it is important to apply the appropriate preload to avoid excessive friction and wear.
  • Lubrication: Proper lubrication is crucial for minimizing backlash and reducing gear play. Lubricants with suitable viscosity and properties should be used to ensure smooth and consistent operation of the worm gear mechanism. Good lubrication helps reduce friction, wear, and any potential clearance that can contribute to backlash.
  • Regular maintenance: Regular inspection and maintenance of the worm gear mechanism can help detect and address any developing backlash or gear play. Routine checks can identify signs of wear, misalignment, or improper lubrication, allowing for timely adjustments or replacements to minimize backlash and maintain optimal performance.

It’s important to note that completely eliminating backlash in a worm gear mechanism may not always be possible or desirable. Some applications require a certain level of backlash to accommodate thermal expansion, compensate for positional errors, or allow for smooth operation. The acceptable level of backlash depends on the specific requirements of the application.

When implementing measures to prevent backlash and gear play, it is crucial to strike a balance between minimizing backlash and ensuring smooth, reliable operation. The specific techniques and approaches used to minimize backlash may vary depending on the design, manufacturing, and application requirements of the worm gear mechanism.

worm gear

Can worm gears be used in both horizontal and vertical orientations?

Yes, worm gears can be used in both horizontal and vertical orientations. Here’s a detailed explanation of the suitability of worm gears for different orientations:

1. Horizontal Orientation: Worm gears are commonly used in horizontal orientations and are well-suited for such applications. In a horizontal configuration, the worm gear’s weight is primarily supported by the bearings and housing. The lubrication and load-carrying capabilities of the gear design are optimized for horizontal operation, allowing for efficient power transmission and torque generation. Horizontal worm gear applications include conveyor systems, mixers, mills, and many other industrial machinery setups.

2. Vertical Orientation: Worm gears can also be used in vertical orientations, although there are some additional considerations to address in such cases. In a vertical configuration, the weight of the worm gear exerts an axial force on the worm shaft, which can introduce additional load and affect the gear’s performance. To ensure proper operation in a vertical orientation, the following factors should be considered:

  • Thrust load handling: Vertical orientations impose a thrust load on the worm gear due to the weight of the gear and any additional external loads. The gear design should be capable of handling and transmitting this thrust load without excessive wear or deformation. Proper bearing selection and lubrication are crucial to support the axial load and maintain optimal performance.
  • Lubrication: Lubrication becomes even more critical in vertical worm gear applications. Adequate lubrication ensures proper lubricant film formation to minimize friction, reduce wear, and dissipate heat generated during operation. Careful consideration should be given to the lubricant type, viscosity, and lubrication method to ensure effective lubrication, particularly in the upper parts of the gear where lubricant distribution may be more challenging.
  • Backlash control: In vertical orientations, gravity can cause the load to act on the gear in the opposite direction, potentially leading to increased backlash. Proper gear design, including tooth geometry and clearance adjustments, can help minimize backlash and ensure precise motion control and positional stability.
  • Bearing selection: The choice of bearings becomes crucial in vertical worm gear applications. Thrust bearings or combinations of thrust and radial bearings may be required to handle the axial and radial loads effectively. Bearings with appropriate load-carrying capacities and stiffness are selected to ensure smooth operation and minimize deflection under vertical loads.
  • Sealing: Vertical orientations may require additional sealing measures to prevent lubricant leakage and ingress of contaminants. Proper sealing and protection mechanisms, such as seals or gaskets, should be implemented to maintain the integrity of the gear system and ensure reliable operation.

In summary, worm gears can be utilized in both horizontal and vertical orientations. However, certain considerations related to thrust load handling, lubrication, backlash control, bearing selection, and sealing should be taken into account for vertical applications. By addressing these factors appropriately, worm gears can effectively transmit power and torque, whether in horizontal or vertical configurations.

worm gear

What are the applications of a worm gear?

A worm gear is a type of gear mechanism that consists of a threaded worm and a mating gear, known as the worm wheel or worm gear. It is widely used in various applications where a high gear ratio and compact size are required. Here are some specific applications of worm gears:

  1. Elevators and Lifts: Worm gears are extensively used in elevator and lift systems. They provide the necessary gear reduction to lift heavy loads while maintaining smooth and controlled vertical movement.
  2. Steering Systems: Worm gears are commonly found in automotive steering systems. They convert the rotational motion of the steering wheel into the linear motion required to turn the vehicle’s wheels.
  3. Conveyors: Worm gears are employed in conveyor systems, particularly for applications that require moving materials at an inclined angle. They offer the necessary torque and control for efficient material handling.
  4. Machine Tools: Worm gears are used in machine tools such as milling machines, lathes, and grinders. They enable precise control over the machine’s speed and feed rate, resulting in accurate machining operations.
  5. Packaging Equipment: Worm gears are utilized in packaging machinery to drive various components such as conveyor belts, rotary tables, and filling mechanisms. They ensure synchronized and efficient packaging processes.
  6. Rotary Actuators: Worm gears find applications in rotary actuators, which are used in robotics, industrial automation, and valve control. They provide precise positioning and torque output for rotational movements.
  7. Textile Machinery: Worm gears are employed in textile machinery for applications like yarn winding, loom mechanisms, and fabric tensioning. They ensure smooth and controlled movement of threads and fabrics.
  8. Raising and Lowering Mechanisms: Worm gears are used in raising and lowering mechanisms, such as those found in stage platforms, scissor lifts, and adjustable workbenches. They enable controlled vertical movement with high load capacity.

These are just a few examples of the applications of worm gears. Their unique characteristics, including high gear reduction ratios, compact size, and self-locking capabilities, make them suitable for a wide range of industries and mechanical systems.

China Good quality Sc14 Slewing Drive Gear Motor for Aerial Working Platform with high qualityChina Good quality Sc14 Slewing Drive Gear Motor for Aerial Working Platform with high quality
editor by CX 2024-01-04