010.30.630 single row ball slewing bearing without gear for XCMG Impact rotary drilling machine

If pits are required without pit inclinations, as is the case for fence posts, fountains or heat pumps, drilling equipment can be used. For this, great depths must be conquered, which will result in high speeds and long intervals of operation on the slewing ring. Their malfunctioning would delay the work, and perhaps even lead to the tool being damaged.   LONGWEI  can draw on its experience from various different areas of application here and develop robust and long-lasting solutions.

Slewing ring bearings have unique load-bearing characteristics and are usually used in hoisting machinery, excavators, slewing tables, wind power generators, telescopes and tank turrets. Through the improvement of processing methods and the renewal of design concepts, slewing bearings can be applied to occasions with smaller dimensions, more complex structures and more precision. Construction machinery is the initial application field of slewing bearings and is also widely used in ground treatment machinery: impact reverse circulation drilling rig, rotary drilling rig, impact rotary drilling rig, reverse circulation rotary drilling rig, positive circulation rotary drilling rig, long spiral engineering drilling rig, diving engineering drilling rig, static pressure pile machine, pile drive

Single row spherical type

The single-row four point contact ball type slewing bearing is composed of two socket sleeves and is compact in structure and light in weight .Due to its steel balls contact with circular rollingtrack on four points,it can bear axialforce ,radial force and overturning moment at the same time,and it can be selected for use in engineering machinerysuch as rotary conveyer,welding operation machine,medium and small-scale hoists,and excavator.

Drawing of single row ball slewing bearing without gear
Single-row four point contact ball type


  • n1 is No. of lube holes, the user can specify the lube hole position.
  • n-φ can be changed to threading holes, hole diameter M, thread depth 2M.
  • There are standard products in the catalog, and the inner and outer diameters are random tolerances. If there is a locating requirement for slewing bearing, please indicate the site and tolerance.
  • It is standard type of our products, if you need more please contact with engineer.
  • Why choose Longwei transmission  slewing bearings
    A pioneer in slewing bearing field, rich experience, can do design, produce, mounting guide
    Small order accepted
    ISO certified company
    Variorum models
    7*24hours hotline to help you with your cranes
    Strict quality control system to ensure quality for slewing bearing

About Longwei

Provide you with customized industry solutions

longwei factory

More than ten years of production experience, strict quality control can be the guarantee of the best solution in the industry.
China’s leading supplier of slewing bearings, its products have passed ISO 9001 and CAPE certification, and has a number of product patents.

The flexibility of our dialogue and approach with our clients is combined with responsive design and development innovation to ensure exceptional delivery.


Do you have any questions about our slewing bearing? Maybe you can find the answer below. If the answer below does not solve your problem, please contact us and our engineer will answer it for you.

1. Where is your slewing bearing manufactured?
Our slewing bearings are all manufactured in China. We not only have the ability to design and produce slewing bearings but the quality can also be guaranteed. At the same time, our slewing-bearing price is more favorable.

2. I don’t know which slewing bearing to use, can you choose for me?
Yes, of course, Each model has a parameter list on the website. You can choose the suitable slewing bearing according to these parameter lists. If you don’t know how to choose, you can get in touch with us and our engineers will work with you to choose the suitable product. We can also design a new slewing bearing solution for you according to your equipment.

3. Can I get your product catalog?
You can get our product catalog in the download or contact us, we will send the product catalog to you by email or other ways.

4. Can you customize products?
Yes, we can. Our engineers have very rich experience in slewing bearing design. On the customized slewing bearing page, you can see some special customized products designed by our engineers. These design solutions meet the special needs of many customers. Our engineers can also work with you to design a new slewing bearing.

5. Can you provide accessories?
Yes, we can provide matching spare parts such as motors, hydraulic motors, and encoders that are compatible with slewing bearings.

6. Can you provide a 3D model?
Yes. All our slewing bearings have 3D models, you can contact us to get them. At the same time, we can also provide CAD files and PDF files.

7. How long is your slewing bearing warranty period?
Our slewing bearing warranty time is 12 months. When you install, use, and store the slewing bearing, please refer to the slewing bearing instruction manual.

8. Can you choose the color of your slewing bearing?
Yes. Our slewing bearing is available in many colors. If you have special requirements, please tell our sales engineers, we are happy to provide services for you.


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