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EWA25-2 Series Slewing Drive

A double worm slewing drive is a brand new slewing drive product or service, which includes a casing, worm gear ring, worm, motor, and other parts. The double worm slewing bearing abandons the core element slewing bearing in style and theoretically types a double row area cross-roller slewing bearing through the outer casing along with the built-in worm gear. Compared with the single worm slewing drive, the double worm slewing drive still has the qualities of modularization, security, and simplified principal engine layout. The load capacity is superior, and the output torque is much more significant than that of the single worm rotary drive.

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A double worm slewing drive is a brand new slewing drive product or service, which includes a casing, worm gear ring, worm, motor, and other parts. The double worm slewing bearing abandons the core element slewing bearing in style and theoretically types a double row area cross-roller slewing bearing through the outer casing along with the built-in worm gear. Compared with the single worm slewing drive, the double worm slewing drive still has the qualities of modularization, security, and simplified principal engine layout. The load capacity is superior, and the output torque is much more significant than that of the single worm rotary drive. Rotation guarantees increased output torque while achieving higher load capacity.

Performance Parameters

Front View Top View

 

Output torque Tilting moment torque Holding torque Axial load Radial load Ratio Backlash Weight
输出转矩 倾覆力矩 保持力矩 轴向承载力 径向承载力 速比 精度 重量
58 kN.m 310 kN.m 275 kN.m 2400 KN 950 KN 108:1 <= 0.13 ° 270Kg
42800 Lbf.ft 229000 Lbf.ft 203000 Lbf.ft 539500 Lbf 213600 Lbf

The Features of Slewing Drive

Slewing drive is an integration of driving power source of the week rotary reducer transmission mechanism, it with rotary bearing as transmission follower and adhesion mechanism, through the rotary bearing inner and outer circle a circle on the initiative of the cover, driving source and shell, and the other a circle both as a follower, and the connection of the base as driven working parts, so using the rotary bearing itself is the week characteristics of rotary joints, efficient allocation of driving power source and the main transmission parts, make it become an integrating rotary, slow down and drive function and structure is simple, Easy to manufacture and maintain the general - purpose gear reducer.

Slewing drive is a highly integrated week rotary retarding mechanism. It is more than that. The characteristics of the maximum and minimum of the slewing drive can be driven part load gap several times. Still, their size and the axial difference are insignificant, especially in the transmission chain. It benefits the structure of serial transmission connection parts, narrowing the whole machinery and equipment.

In addition, whether it is a gear or worm slewing drive, the size difference between the primary and driven parts is enormous, so it is easier to achieve a large transmission ratio of the transmission, which is not easy to do in many other types of variable speed transmission mechanisms.

Three Advantages of The Slewing Drive

Modularization of slewing drive: due to the high integration degree of slewing drive, users do not have to purchase and process each part of the rotating device one by one, which also reduces the preparation process at the beginning of product production to a certain extent, thus significantly improving labor productivity.

Safety of slewing drive: the worm wheel and worm drive feature reverse self-locking, which can realize reverse self-locking. In other words, the worm wheel can only be driven by the worm wheel, not the worm wheel. This feature enables slewing drive to be widely used in hoisting, high-altitude operation, and other equipment. It not only improves the technology content of the host but also dramatically improves the host's operation stability and safety factor. Slewing drive is easier to install and maintain and more space-efficient than traditional slewing devices.

Slewing drive machine design: compared with the traditional gear drive, worm gear drive can get a relatively large reduction ratio, in some cases, can save reducer parts for the host, to reduce the procurement cost for customers, but also significantly reduce the rate of host failure.

Typical Case of Slewing Drive

Slewing drives can be found in many applications, including:

— Construction Equipment.
— Renewable energy solar trackers and wind turbines.
— Turntable and Welding Positioner.
— Packaging and packaging equipment.
—  assembly line.
—  Air platform.
—  vacuum truck.
—  public transport.
Many of these applications are OEM. OEM slewing drives can be customized to fit these high-volume OEM applications.

We Are Always Improving

Since we started to design and produce the first slewing drive, optimization design and improvement plan are always in progress. We improve the processing technology of the housing, reduce processing costs, ensure the stability of the housing, and the manufacturing process of the housing is not limited. We improved the sealing solution of the slewing drive to make the sealing of the slewing drive more reliable and the design more reasonable. Sealing guarantees the high reliability of the slewing drive. It can quickly and cheaply for customers to customize non-standard products to meet customers' different use requirements.

We improved the design of slewing drive, unified and standardized the creation of the input end to provide convenience for designing different solutions, reduce manufacturing costs, reduce the design complexity and minimize errors. Through continuous efforts, we have accumulated rich experience in design, processing, debugging, and assembly, using 3D design software for modular design, which can quickly design solutions and solve customer problems. Through repeated optimization design and scientific follow-up of the processing process, designers assemble and debug by themselves from a mature and perfect design idea and processing technology.

FAQ About Slew Drives

1. What is the prime mover for slew drive?

A: An electric or hydraulic motor is the prime mover for slew drive.

2. Does slew drive requires a brake or not?

A: Depends upon the requirement and application.
3: Where is slew drive used?

A: Slew drive is used for any machine having turning movement. Usually, it is used with slew bearings with internal or external teeth, and the gearbox has a pinion on the output shaft that drives the big gear of the slew bearing.

4. What type of gearbox is used in slew drive?

A: Planetary gearbox is used in slew drive.

5: What kind of braking arrangement is provided for slew drive?

A: Normally, slew drives are electric or hydraulic. The electric type has got shoe type brake or Negative electromagnetic brake on the motor. At the same time, the hydraulic type has got a multidisc hydraulic brake.

6. What type of bearings are used in this slew drive?

A: Spherical or roller bearings are usually used in the slew gearbox output shafts to take care of high radial loading.
7. Which type of pinion is used in the slew drive?
A: Normally, the slew drive has a pinion with a corrected profile to ensure a complete contact pattern with bearing gear.
8. How is backlash adjusted in slew drive?

A: To adjust the backlash between the pinion and slew gear, the gearbox's mounting is slightly eccentric to adjust the backlash precisely.

9. Slew drive is used for which applications?
A:  Slew drive is used for stacker, ash handling reclaimer, windmill, tower cranes, and excavators.

Additional information

Edited

Yjx

Product Quick Detail:

  • Standard and non-standard available
  • With high quality and competitive price
  • Prompt delivery
  • Packing as per customer’s demand.

We promise will offer the best price by the high quality in china! We also accept special order about the products. If you are interested in our products. Please do not hesitate to let us know.We are pleased to give you the detailed information.We promise that our products would be safety and were in high quality and reasonable price. If you are interested in our products, please contact us asap.We are sincerely looking for your cooperation.

Most of our products are exported to Europe or Americas, both standard and nonstandard products available. We can produce as per your drawing or sample. Material can be standard or as per your special request. If you choose us, you choose reliable.

pruduct quality report

Materials Available

1. Stainless Steel: SS201, SS303, SS304, SS316, SS416, SS420
2. Steel:C45(K1045), C46(K1046),C20
3. Brass:C36000 ( C26800), C37700 ( HPb59), C38500( HPb58), C27200(CuZn37), C28000(CuZn40)
4. Bronze: C51000, C52100, C54400, etc
5. Iron: 1213, 12L14,1215
6. Aluminum: Al6061, Al6063
7.OEM according to your request
product materials available

Surface Treatment

Annealing, natural canonization, heat treatment, polishing, nickel plating, chrome plating, zinc plating,yellow passivization, gold passivization, satin, Black surface painted etc.

Processing Method

CNC machining, punch,turning, milling, drilling, grinding, broaching, welding and assembly
product finishing

QC & Certificate

Technicians self-check in production,final-check before package by professional Quality inspector
ISO9001:2008 , ISO14001:2001,ISO/TS 16949:2009

Package & Lead Time

Size: Drawings
Wooden Case/Container and pallet, or as per customized specifications.
15-25days samples. 30-45days offcial order
Port: Shanghai/Ningbo port
product packages