Bearing classification:

Sliding bearings, joint bearings, rolling bearings, deep groove ball bearings, angular contact ball bearings, self-aligning ball bearings, thrust ball bearings, bi-directional thrust angular contact ball bearings, thrust roller bearings, needle roller bearings, outer spherical ball bearings, self-aligning roller bearings, flange bearings, seat bearings, combination bearings, linear bearings.

Bearing usage:

Support the mechanical rotating body, reduce the friction coefficient during its motion, and ensure its accuracy in rotation.

扩展资料：

轴承钢的物理性能：

轴承钢的物理性能主要以检查显微组织、脱碳层、非金属夹杂物、低倍组织为主。一般情况下均以热轧退火、冷拉退火交货。

交货状态应在合同中注明。钢材的低倍组织必须无缩孔、皮下气泡、白点及显微孔隙。中心疏松、一般疏松不得超过1.5级，偏析不得超过2级。

钢材的退火组织应为均匀分布的细粒状珠光体。脱碳层深度、非金属夹杂物和碳化物不均匀度应符合相应有关国家标准规定。