Centerless grinding
（重定向自Centerless grinder）
![A schematic diagram of the centerless grinding process](/Images/godic/202501/03/Centerless_grinding_schematic.svg5822.png")
![A centerless grinder](/Images/godic/202501/03/Centerless_grinder5822.jpg")
![A close-up of the grinding wheel and back-up wheel](/Images/godic/202501/03/Centerless_grinder_wheels5822.jpg")
Centerless grinding is a machining process that uses abrasive cutting to remove material from a workpiece. Centerless grinding differs from centered grinding operations in that no spindle or fixture is used to locate and secure the workpiece; the workpiece is secured between two rotary grinding wheels, and the speed of their rotation relative to each other determines the rate at which material is removed from the workpiece.