Bearing in grinding process, the working surface is carried out by high-speed rotating grinding wheel, so if you do not press the operating instructions for operation and adjust equipment, there will be all kinds of defects at the time of grinding the bearing surface, which affects overall quality of the bearing. Bearing in precision grinding, due to rough demanding, work the surface grinding traces can often be observed to surface grinding marks are the following naked eye.

Reason cross spiral traces traces manifestations happen mainly due to the wheel bus straight poor, uneven phenomenon exists, when the grinding wheel and the workpiece is only partial contact, when the workpiece or grinding wheel several times back and forth movement, workpiece performance will be reproduced and cross helix can be observed visually. Pitch and speed of the workpiece table of these spirals, the size of workpiece speed, but also with the wheel axis is not parallel to the rail line and the table-related.