We provide professional advice for our customers about installation and maintenance for slewing bearings.

SWBTEC Slewing Bearings Installation

A. Flatness requirement of the mounting surface

In order to avoid localized overload and make sure the slewing rings can be turned smoothly, the flatness of the mounting surface should be clean, flat and controlled as the following table:

	Flatness Deviation
Race way center diameter	Four Point Contact Ball Type	Double Row Type	Roller Type
≤1000mm	0.15	0.20	0.10
1000-1500	0.19	0.25	0.12
1500-2000	0.22	0.30	0.15
2000-2500	0.25	0.35	0.17
2500-4000	0.30	0.40	0.20

B. The soft zone (marked by the letter ”S”) and the loading plug should be located at non-loading area or light-loading area.

C. The strength grade of mounting bolt must be no less than 8.8 grade. The bolt must have enough pre-lightening force and the pre-tightening force must be in the range of 0.6-0.7 times of the bolt material yield strength.

D. The pinion must be installed from the gear which painted green.

SWBTEC Slewing Bearings Maintenance

● The slewing rings can not been cleaned with water directly, preventing water and any other objects into the raceway.

● The slewing rings had been filled with a little EP2 based grease in the raceway before delivery. Make sure to fill the slewing rings with enough grease before installation and fill the grease again every 50-60 working hours(except bad environment). Also, In order to make sure the grease evenly lubricated, the slewing rings must be rotate smoothly when filling.

● In order to prevent any objects falling into the raceway, please check the seals often to make sure it is ok.

● If there is any abnormal phenomenon, such as noise, shock, and suddenly increasing driving force, Please stop working, find out the problem and remove it.

● If the slewing rings stocked in the warehouse for more than 6 months, please filling the grease again and do rust prevention with anti-rust oil.

● If there is noise when turning the slewing rings, please try to check the gear clearance is ok between the slewing rings and pinion or try to fill more grease or check the flatness of the mounting table or check the load capacity of the slewing rings is enough or check the uneven pre-tension force of the mounting bole.

● We don’t advise non-professionals person to disassemble the slewing rings and mixed assemble the slewing ring with different outer ring and inner ring due to clearance problem.

Technical Support

Product Catalog / Technical Documentation

● SWBTEC Products Catalog

● Slewing bearing specification document

● Installation Instructions

Document Download

Customer Service

FAQS

1.Which industries are your slewing bearings used in?

Our slewing bearings are widely used in excavators, cranes, aerial work platform, packing machine, Medical equipment, forestry and farming, water treatment, filling machine, Mining Industry and precision robot.

2.Do you offer custom designs?

Yes, we offer custom design and manufacturing based on customer drawings or technical requirements.

3.What is your typical lead time?

For standard models, the lead time is 15–30 days. Custom products may take longer depending on specifications.

4.Which countries do you export to?

We export to countries including Germany, the USA, Japan, South Korea, Italy, Spain, and the UK, among others.

5.What certifications do you have?

We are ISO 9001 certified and continuously improve our manufacturing and inspection processes.

6.How do you ensure product quality?

Every product is tested for dimensions, hardness, gear and raceway quenching quality, and operational performance before delivery.

7.Do you provide installation guidance?

Yes, we provide installation manuals and can offer remote technical support if needed.

8.What if there’s a problem with the product?

We offer warranty support. If any quality issue occurs, please contact our after-sales team for prompt assistance.

9.How can I choose the right slewing bearing model?

We can recommend the appropriate model based on your load, installation space, and working conditions. Custom designs based on drawings are also available.

10.Do you provide 3D drawings or technical documents?

Yes, we can provide 2D drawings, 3D CAD models, and technical documents to assist in your design and selection process.

11.Do slewing bearings require maintenance?

Yes, regular lubrication and inspection are required. We provide maintenance manuals to help extend the bearing’s service life.

12.Is there a minimum order quantity (MOQ)?

We accept small trial orders. The MOQ can be negotiated based on the product type.