China Grinding Machine catalog of Sheet Metal Processing Machine Turret Punch Press Tool Grinding Machine, Extend Tooling and Machine Life Auto Punch Die Grinder Sharpener provided by China manufacturer - RSM Machinery Co.,Ltd., page1.1. Horizontal grinding head The horizontal grinding head adopts high-precision flange type spindle design. With three pairs of super-precision angular contact bearings (made in Japan Germany), using high-temperature resistant high-grade lubricating grease, completely sealed, no.