High-speed gear reducer

helical gearcoaxialpinion shaft

The gear unit can be constructed with the low-speed shaft offset to the left (arrangement I) or to the right (arrangement II). Materials: Grey cast iron is used for the gear unit casing. Pinion and wheel are of case-hardening steel. Gear cutting: The single (TAD) and double (T A) helical teeth are case-hardened and ground and modified for the most favourable meshing conditions. Bearings: The shafts run in plain bearings, the pinion shaft bearings being adjustable multi-slide bearings. Lubricating oil system: Tooth mesh and plain bearings have forced-feed lubrication. The oil is provided by a gear-type oil pump attached to the wheel shaft or by a separate oil pump unit. As the 'quantity of lubricating oil cannot be absorbed by the casing, a separate oil collecting tank is required. The frictional heat generated in the gear unit is dissipated by an oil filter cooler in the oil circuit, its filter can be disconnected and cleaned during operation. Direction of rotation: The input and output shafts rotate in opposite directions. The gear unit can be supplied for either direction of rotation. However, the gearing is run-in only in the direction specified in the order. Efficiency: Depending on power, ratio and speed an efficiency of 97.8 to 98.&3% under full load can be achieved. Extent of supply The gear unit of standard design is supplied completely assembled. The following instruments are supplied fitted to the gear unit or as separate items: 1 oil circulation indicator with thermometer for each bearing seat, 1 pressure gauge and thermometer each on the oil feed,