This machine is mainly used for maintaining the cylinder of motorcycle, etc. Place the cylinder to be bored under the base plate or on the plane of the base of the machine after the center of the cylinder hole is determined, and the cylinder is fixed, maintenance of boring and honing can be carried out. The Cylinders of the motorcycles with diameter 39-72mm and depth within 160mm can all bebored and honed. If the suitable fixture are fitted, other cylinder bodies with corresponding requirements can also be bored and honed.