GET A QUOTE: Eric.wang@ltzzc.com
Eric.wang@ltzzc.com +86 135 2599 6918 Message

How to manufacture a slew ring bearing?

Slewing bearings are key components of large mechanical equipment, widely used in construction machinery, wind power generation and other fields. Their manufacturing involves multiple precision processes.

1. Raw Material Selection

Medum-carbon alloy steels such as 42CrMo are mostly used. For special working conditions, stainless steel or heat-resistant alloy steel may be selected. Raw materials must undergo strict inspections including chemical composition analysis and hardness testing.

2. Forging Process

Steel billets are heated to 1000-1200°C and undergo operations such as upsetting and drawing to improve the internal structure. The forged blanks need to be inspected by flaw detection.

3. Machining

  1. Turning: Divided into rough turning and finish turning. Rough turning removes excess material, while finish turning ensures high precision and good surface roughness.

  1. Milling: Used to machine tooth profiles for bearings with gear rings, ensuring accurate tooth profiles and good tooth surface quality.

  1. Drilling and Boring: Used to machine various hole systems, ensuring positional accuracy, dimensional accuracy and perpendicularity.

  2. Machining

4. Heat Treatment

  1. Quenching: Key parts adopt induction quenching to form a 2-6mm hardened layer, improving hardness and wear resistance.

  1. Tempering: Performed at 150-250°C to eliminate residual stress and adjust hardness and toughness.


Heat treatment

5. Grinding Process

  1. Raceway Grinding: Ensures high precision and low roughness of the raceway, improving bearing life and rotation accuracy.

  1. Surface Grinding: Ensures the flatness and perpendicularity of the end face, making the force evenly distributed.

  2. Grinding

6. Part Cleaning and Inspection

  1. Cleaning: Uses ultrasonic or spray methods to remove impurities, and drying is done to prevent rusting.

    spection: Conducts comprehensive inspections of dimensions, shapes and      other parameters. Key items are fully inspected, and only qualified parts can enter the assembly process.

7. Assembly

Inner rings, outer rings and other parts are assembled in a clean environment. The fit clearance is controlled, and the rotation flexibility is tested after assembly.

8. Final Inspection and Packaging

  1. Inspection: Conducts multiple inspections such as rotation accuracy and load testing to ensure performance meets standards.

  1. Packaging: Uses wooden boxes or other packaging, filled with buffer materials, and marked with relevant information.

The manufacturing of slewing bearings requires strict control of each link to ensure quality and meet the needs of industrial equipment.


If you are looking for slewing bearing,please contact LTZC.

LTZC provides you with solutions

Products

Recent Posts

Contact LTZC Bearing

Feel free to get a quote on the latest price of slewing bearings for any large applications, please include your application, needs, requirements and other details.

Get In Touch

Copyright © 2023 LTZCBearing. All Rights Reserved Privacy | Terms | Sitemap