The four-point contact ball slewing bearing has a high static load capacity and can provide smooth rotation. The toothless four-point contact ball slewing bearing has the advantages of high transmission efficiency, reliable work, and simple and compact structure. There are raceways in the inner and outer rings, and the inner and outer rings are connected by steel balls. The inner and outer rings are equipped with mounting holes, which can be fixed on the corresponding tooling with bolts, and the inner ring can be rotated, or the outer ring can be rotated as needed, or the inner and outer rings can be rotated at the same time.
Slewing bearings generally use 50Mn or 42CrMo as raw materials. The nature and quality of the raw materials have a great impact on the performance and service life of the slewing bearing. Longwei transmission slewing bearings only use materials from qualified suppliers. We will conduct strict inspections on forgings, including ultrasonic inspection, hardness inspection and metallographic inspection.
50Mn is a high-quality carbon structural steel. It has high strength, elasticity and hardness, and is often used after quenching and tempering. 50Mn has poor welding performance, and has a tendency to overheat sensitivity and temper brittleness. 50Mn is usually used to manufacture parts with higher requirements for wear resistance and load capacity, such as gears and gear shafts.
42CrMo material is an alloy steel, very suitable for forging processing. It has high strength, high hardenability and good toughness. The deformation of 42CrMo during quenching is very small, and it has high creep strength and durability under high temperature. Compared with 50Mn, 42CrMo has better fatigue strength, but the cost is higher.
Longwe Transmission slewing bearing team is committed to keep the spirit of continuous improvement and focus our strategy of strict quality control standards, quick response, prompt delivery and low price.We look forward to working on all of our customers’ growing demands. Our ability to optimize the bearing design for your specific needs is unparalleled and we will assist you throughout the design, manufacturing and implementation process.
Products type | 1.single – row four – point contact ball |
Special services | 1.slewing bearing design |
Business type | manufacturer,trading company |
Advantages | 1.ISO 9001:2008 certificate,12 years experience2.High qualified material,low MOQ,excellent quality,competitive prices, |
Material | 50Mn/42CrMo or as your requirements |
Package | 1.First lubricated, Second circled with plastic film,kraft paper,blue belt,then packaged inwooden case,last gathered in Wooden pallet.2 According to your requirements
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Delivery time | 1.For general product , our delivery time need only 5 days is enough (goods in stock).2.If you have special technical requirements or need additional processing,we first rder need only 45 ys, if that is roller continuous order, our delivery time only need 35 ys.
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Application fields | Mine machine, port hoisting machine, port oil transfer equipment onshore and offshorecrane,excavator,concrete machine,paper machine, plastic and rubber machine, weavemachine, steel plant, electronic power plant, wind power generator, other construction and industry machines or equipment.
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We supplied high quality product & good service to every end user and valued distributors all over the world. We’ve enjoyed a very good reputation up to now.
Our manufacturing standard is according to machinery standard JB/T2300-2011, we also has been found the efficient Quality Management Systems(QMS) of ISO 9001:2015 and GB/T19001-2008. We devote ourselves to the R &D of customized slewing bearing with high precision,special purpose and requirements and has acquired certificate of China Classification Society .
If you have any questions, pls do not hesitate to contact us.
FAQ :
1 LW Slewing Bearing Heat Treatment
Heat Gear Slewing Bearings are in the majority of cases supplied with spur tooth. Stub teeth also is ok.There are two kinds of tooth hardening. They are normalizing and tempering, According to the different applications, there are two ways of quenching. They’re whole tooth quenching and single-tooth quenching. Single-tooth quenching can be divided into tooth surface & root quenching and tooth surface quenching.
2 . The Calculation of Slewing Bearing.
Static load capacity
The determined loads must be multiplied with a factor fstat allocated to the application. The product Fa’ or Mk’ must be below the static critical load curve of the selected bearing.
With regard to radial loads in load combinations
Fa = axial load
Fr = radial load
Mr = tilting moment
3 Protection Against Corrosion
We make Protection Against Corrosion on surface of bearing,and make couple of packing paper.
4.Customize.
Yes,we have professional technical terms.
5.Warranty:
General 1 year.
- Reliable reputation.
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