• Rakesh Enterprise

Gear Units, Single Reduction

"Power Pack" single reduction gear units are the result of many years of experience. Completely re-designed gear case with liberal ribbing increases heat dissipating area, streamlined sump carrying more oil. All this means that the continuous load carrying capacity is increased without substantial in temperature. Wherever applicable, British as well as Indian design standards are used. Worm wheel conforms to phosphor-bronze PB2-C as per BS 1400, while gear case conforms to CI grade FG 220. The completely oil-tight, dust-proof gear case is capable of being installed in the open without a separate cover. The worm is made of case-hardening alloy steel, profile ground and is integral with the shaft. Bearing journals are accurately ground. Worm wheel is made of centrifugally cast phosphor-bronze rims, shrink fitted and brazed with CI centres. The worms and worm wheels are supported on ball/roller anti-friction bearings of ample margin of safety to allow adequate journal as well as thrust loads. The wheel shaft is made of high tensile carbon steel. It is large diameter to carry the torsional as well as bending loads which may be induced by overhung drives. Lubrication to gears and bearings is by splash of oil from the sump. Thus, no special core is required except for the occasional topping up of the oil to the required level. A large oil filter-cum-breather is provided together with a drain plug. The standard power ratings hold good for 12 hours of continuous running under uniform load being driven by electric motor. They give minimum gear life of 20,000 hours, subject to limitation of maximum oil temperature of 100ºC under full load, 20ºC ambient.