Acceptance criteria of slewing bearing

Single row slewing bearing has been widely used in Machinery. In order to enhance quality of equipment, End users have made strict and relatively in-house standards. Manufacturers of slewing bearing continue to optimize their production processes to meet the demands. The performance of the slewing bearing is mainly depends on precision of products and quenching quality of the raceway. Fenghe slewing bearing believes that the quality of the slewing bearing as follows:

1, Raw materials

Material selection – Ring billets – heating – forging – heat treatment after forging – machining – physical and chemical testing – UT – finishing – cleaning – packaging step by step.

2, The quality of finished products

Radial clearance and axial clearance are all under the industry standard range, and the rotation is flexible, without jamming and impact, ensuring the theoretical calculation value and motion accuracy of the slewing bearing.

3, slewing bearing heat treatment quality

(1) Quenching hardness

The hardness of raceway is HRC 59-62 before grinding.

(2) Hardened layer depth

The hardened layer after medium frequency induction hardening and medium frequency induction hardening and tempering is in standard.

4, steel ball / roller and raceway contact area

The steel ball/roller keeps a reasonable contact angle with the theoretical contact area.