MVR220 series semi-automatic horizontal honing machine can process hole diameter 2-100mm, and can hone fuel spray nozzle, gas flow instrument tube, gear, small hydraulic parts, steering knuckle and parts, refrigeration compressor and parts, small engine cylinder, turbo boost and parts. 1. Both the spindle and stroke motor are applied variable frequency motor, which can realize continuously frequency. Automatic feed speed and automatic conversion of rough and fine honing speed of different honing stone make the honing easier.