A ball guiding device configured for use with an apparatus for lapping and/or grinding balls that includes a first disc and a second disc with first and second continuous grooves separated by a wall. The ball guiding device includes a body having a guide groove with a first end insertable into the first continuous groove and a second end insertable into the second continuous groove and a raised central portion configured to overly the first wall. The guide groove including a first ramp extending from the first end to the raised central configured to guide the balls out of the first continuous groove and a second ramp extending from the raised central portion to the second end configured to guide the balls into the second continuous groove.

A grinding tool kit, apparatus and method for finish machining of a rolling surface of a bearing roller. The apparatus comprises a main machine, an external circulation system, a grinding tool kit and a grinding tool kit clamp. A configuration of the main machine comprise a grinding strip assembly rotary type and a grinding sleeve rotary type. The external circulation system comprises a collection unit (41), a sorting unit (42), a feeding unit (43) and a transmission subsystem. The grinding tool kit comprises a grinding sleeve (21) remaining coaxial during working, and a grinding strip assembly penetrating through the grinding sleeve (21), an inner surface of the grinding sleeve (21) is provided with a first spiral groove (211); and the grinding strip assembly comprises a plurality of grinding strips (22), front surfaces of which are provided with linear grooves (221) or second spiral grooves distributed in a circumferential columnar array.

A grinding tool kit, apparatus and method for finish machining of a rolling surface of a bearing roller. The apparatus comprises a main machine, an external circulation system, a grinding tool kit and a grinding tool kit clamp. A configuration of the main machine comprise a grinding strip assembly rotary type and a grinding sleeve rotary type. The external circulation system comprises a collection unit (41), a sorting unit (42), a feeding unit (43) and a transmission subsystem. The grinding tool kit comprises a grinding sleeve (21) remaining coaxial during working, and a grinding strip assembly penetrating through the grinding sleeve (21), an inner surface of the grinding sleeve (21) is provided with a first spiral groove (211); and the grinding strip assembly comprises a plurality of grinding strips (22), front surfaces of which are provided with linear grooves (221) or second spiral grooves distributed in a circumferential columnar array.

It is provided a device with a container for collecting machining suspensions, in particular polishing suspension, used during the machining of workpiece parts in a machine tool for machining workpiece parts, and a machine tool with at least one tool spindle for receiving tools and at least one workpiece spindle for receiving and holding a workpiece part to be machined, wherein this collecting device is provided between the workpiece spindle and the tool spindle.