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What is slew drive?
A slew drive is a ready-to-install unit consisting of a ball or roller slewing ring for the simultaneous transfer of axial and radial forces as well as tilting moments with hydraulic or electric drives in a completely enclosed housing.
1.Slewing drive for solar tracking system
Vertical rotary slewing drive use enveloping worm, multi-tooth contact, adopts the characteristics of high bearing capacity, reliable static self-locking, stable operation, etc., in order to cope with the required driving torque and holding torque caused by the increasing size of the current components.
In view of the harsh environment of the photovoltaic industry, the company currently has C5 anti-corrosion grade, IP65 protection grade products, and achieves full model coverage, the existing SE3/VSE7/SE8/SE9/SE10 ect single-point slewing drive and VD7PA multi-point slewing drive and other models, the matching square tube range mold is 90-150mm, and can provide various shapes of output designs, providing customers with a variety of models to choose from, mainly used for flat uniaxial photovoltaic tracking brackets.
2.Slewing drive for engineering machinery
The horizontal rotary reducer adopts the meshing transmission of the enveloping worm or the straight worm and the slewing bearing. It not only has a large contact surface of the teeth, high hardness, strong wear resistance, but also has the strong anti-overturning performance of the slewing bearing and the radial force of the shaft. The bearing capacity is high and the service life is long. The horizontal rotary reducer can be adapted to most of the power equipment on the market (hydraulic motor, DC motor, AC motor, servo, stepper motor, etc.) to meet the overall equipment needs of customers. The existing products are fully covered from 5-25 inches , widely used in ship cranes, cranes, coal mining machinery, cutting equipment, aerial work vehicles, automatic rotating platforms and other fields.
1.Spur gear unit or worm drive
2.Max. torques of up to 450 kNm
3.Max. tilting moment load of up to 1,200 kNm
4.Raceway diameter of up to approx. 1,000 mm
5.Unlimited slewing range
6.Fast installation
7.Smooth, jolt-free movement - no stick/slip effect
8.Maximum safety through full encapsulation
9.Cost-efficient, proven technology
10.Compact, space-saving, heavy duty
The mechanics behind it is built on the concept of a worm wheel where a slewing ring with external teeth is meshed with complementing worm gear with a predefined gear ratio. Internal components are contained and assembled inside a cast iron or aluminum housing for protection and installation.
The unique design of a slew drive allows it to utilize two perpendicular planes transmitting high output rotational torque with a relative speed ratio to its inputs. As the worm gear rotates through a low input torque on the horizontal plane, its hardened teeth translate rotational motion onto the external slewing teeth. This force creates a rotation around the perpendicular axis of the slew drive through the slewing outer ring.
The use of a worm-wheel design makes room for a wide range of low torque inputs to the slew drive to transmit or hold high torque applications. Slew drives can be found across several constructions and heavy machinery equipment. The versatility and weight allow slew drives to act as an immediate solution to rotary-related issues.
High power density: While slewing rings are most commonly used to generate slew rotation, slew drive technology capitalizes on the capacity of its internal slewing ring while introducing a built-in driving force through the worm gear. Speed and reduction ratios are better controlled through the worm wheel design as opposed to a standard slew ring and pinion.
Space-saving: Slew drives allow for considerable space saving in the perpendicular planes as no additional gearboxes are required for speed reduction.
Protection for internal components: In harsh environments, an enclosed housing slewing drive protects the internal components from debris and contamination through different sealing solutions.
Plug and play: Slew drives can be integrated and installed into any system once they are in place and attached to a power source. This setup is an improvement from the corrective adjustments made on older systems.
Customizable: Slew drives can be customized to meet their application, such as including multiple drive motors to double the torque capacity.
Construction equipment.
Renewable energy solar trackers and wind turbines.
Turntables and welding positioners.
Packing and packaging equipment.
Assembly lines.
Aerial platforms.
Vacuum Trucks.
Public transportation.
Slew drives, also known as worm driven bearings, slewing rings or four-point contact ball bearings, are used in a wide range of applications in various sectors. Some examples of sectors where slew drives are used include:
Construction machinery: Slew drives are used in excavators, cranes, and other construction equipment to provide smooth and precise rotation. This allows the equipment to perform tasks such as digging and lifting more efficiently.
Wind energy: Slew drives are used in wind turbines to provide rotational movement for the blades. This allows the turbine to capture wind energy more efficiently.
Wind energy: Slew drives are used in wind turbines to provide rotational movement for the blades. This allows the turbine to capture wind energy more efficiently.
Industrial automation: Slew drives are used in robotic systems and other automated equipment to provide precise and reliable rotation. This allows the equipment to perform tasks such as sorting, packaging, and assembly with greater efficiency.
Mining equipment: Slew drives are used in mining equipment such as excavators, conveyors, and crushers. This allows the equipment to perform tasks such as digging, moving, and crushing ore more efficiently.
Marine equipment: Slew drives are used in marine equipment such as cranes, winches, and davits. This allows the equipment to perform tasks such as lifting and positioning heavy loads with greater precision.
Defense and aerospace: Slew drives are used in militari and aerospace equipment such as radar systems and missile launchers. This allows the equipment to track targets and move in a precise and controlled manner.
Agriculture: Slew drives are used in agricultural equipment such as irrigation systems, sprayers, and harvesters. This allows the equipment to perform tasks such as watering, spraying, and harvesting crops with greater efficiency.
Transportation: Slew drives are used in transportation equipment such as cranes and gantries used for loading and unloading cargo. They are also used in bridge and tunnel construction equipment to provide smooth and precise rotation.
Entertainment industry: Slew drives are used in amusement park rides, such as Ferris wheels and roller coasters, to provide smooth and controlled rotational movement.
Medical equipment: Slew drives are used in medical equipment such as patient lifts and adjustable hospital beds. This allows the equipment to provide smooth and controlled movement for patient comfort and safety.
Environmental equipment: Slew drives are used in environmental equipment such as water treatment plants and waste management systems. This allows the equipment to perform tasks such as filtering, separating, and treating waste and water with greater efficiency.
Oil and gas industry: Slew drives are used in oil and gas equipment such as drilling rigs and offshore cranes. This allows the equipment to perform tasks such as drilling, lifting, and positioning with greater precision.
Aerospace industry: Slew drives are used in aerospace equipment such as satellite dishes and solar panels on space missions. This allows the equipment to track and move with precision in the harsh conditions of spaceIn summary, slew drives are used in a diverse range of sectors and applications where precise and efficient rotational movement is required. They play a critical role in improving productivity, safety, and performance in various industries.
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