Non -maintaining pulley gear

The utility model provides a non -maintaining pulley gear belongs to mechanical technical field. The device is annular end cover, hub, two blocks of webs and grooving including what connect gradually from inside to outside, still within the inner circle that is located the end cover the axle, the bearing of back shaft and the inner circle branch sleeve of location bearing. It is fixed that hub and end cover pass through stainless steel wire winding, and the outer lane and the hub of end cover are connected, has between the inner circle of end cover and the inner circle branch sleeve to be not more than 0.1 millimeter clearance. Be full of lubricating grease in the inner chamber of hub, end cover, inner circle branch sleeve and major structure one -tenth to form the enclosed construction. The utility model discloses can realize non -maintainingly, once only fill up lubricating grease, not need to be changed in at least 5 years, be equipped with the benefit oilhole on the web, mend oil after 5 years and once can extend to the decade, carry out thermal treatment and its abrasion resistance of machine tooling improvement to the grooving simultaneously, the precision, smooth finish has improved the life of pulley gear greatly.