Select the appropriate contact angle according to the rolling element size and material selection of the bearing

Choosing suitable contact angle bearings Bearings with two contact angles have different performance and application areas (as shown in Table 1). Selecting the bearings from the size and material of the rolling elements All the bearings of the main shaft are "B" in the model with large-sized balls, and the rest are small balls. Large ball bearings have higher bearing capacity than small ball bearings and are therefore more suitable for high-load applications. In contrast, the ball bearing has better high-speed adaptability. Ceramic ball bearings have an additional advantage in speed (see the FAG spindle bearing parameter table). The X-life ultra-long-life bearing consists of a Cronidur 30 ferrule and a ceramic ball. The small ball X-life bearing model starts with XC, and the large ball bearing starts with XCB. The comparison of the specifications and performance parameters of the following spindle bearings can help in selecting the right bearing.

The contact angle is divided into: 15° 25°.
Applicable performance options: Radial stiffness Axial stiffness Radial system stiffness Radial loading capacity Axial bearing capacity Radial axial composite bearing capacity Higher speed and inner and outer ring temperature difference Inner and outer ring temperature difference ΔT is larger ΔT is smaller.
Application selection: Grinding lathe Ultra-precision machine tool milling machine Belt drive side bearing arrangement Drilling machine machining center Electric spindle.

Ball Size/Sphere Material Load Speed ​​Life Bearing Type Large/ Ball High Medium Good B... Small/Steel Medium High Good HS.. Large/Ceramic Ball Medium High Good HBC.. Small/Ceramic Ball Low High Best HC. .X-life ultra-long-life bearing optimal optimal optimal XC.., XCB..