Ventilation Pinion A Type 32mm Copper Sleeve 30mm Rack Height (20/box)

The pinion involves mainly one gear, one galvanised sheet house, and two copper alloy bearings. Its gear is made from the technology of powder metallurgy and is quenched. The gear has a hard surface and is strong. The gear is located in a galvanised sheet house and is supported by two copper alloy bearings. This pinion can be easily turned and has a long lifetime. Its maintenance is easy. While running, the pinion makes almost no noise. This pinion works with a rack and is used to open and close continuous ventilation windows of greenhouses and similar buildings.