Internal circular grinding
When performing internal circular grinding, one also differs between longitudinal and crosswise grinding. Contrary to the external circular grinding, within the bores there are large contact lengths between the abrasive bodies and the workpiece. This results in slim, long chips and unfavourable cooling lubrication. In order to avoid the chip chamber becoming fully pressed and the diameter becoming largely amended due to abrasive body wear, the abrasive body diameter is to amount to 6/10 up to 8/10 of the bore diameter. Most favourable are soft, open abrasive bodies having coarse grains. Neither workpiece nor grinding spindle may be subject to large grinding forces.