What is the Difference Between Bearing Steel GCr15 and GCr15SiMn in Use?

The properties of bearing steel GCr15 and GCr15SiMn are basically the same, but the hardenability of GCr15SiMn steel is better than GCr15 steel, so for larger bearing parts, GCr15SiMn steel should be used. High-carbon chromium bearing steel is widely used in the manufacture of rolling bearing rings and rolling bodies.

GCr15 bearing steel is used to manufacture a large number of cars, tractors, tanks, aircraft and other engine bearings, machine tools, motors and other spindle bearings and railroad vehicles, mining machinery, general machinery with bearings.

GCr15SiMn and GCr15SiMo bearing steel are mainly used to manufacture bearings with large wall thickness. GCr15SiMn is suitable for manufacturing bearings with wall thickness in the range of 15mm~35mm, while GCr15SiMo bearing steel is suitable for manufacturing bearings with wall thickness greater than 35mm, such as various large and extra-large bearings, which are mostly used in heavy machine tools and steel rolling mills without large The working conditions of impact load. But because of the crack sensitivity of GCr15SiMn steel is larger, poor impact toughness, so for large wall thickness of the mill and mining bearings in the conditions of large impact loads, generally limit the use of GCr15SiMn steel. GCr18Mo and GCr15SiMo hardened steel has been developed, its performance is superior to GCr15SiMn steel, can be used in railroad bearings, rolling mill bearings, mining machinery bearings instead of GCr15SiMn steel.

Contact us for more details:

E-mail: emily@gainhui.com

Tel: +86-029-88692376

Mob/WhatsApp: +86-18710850036