Worm Gearbox

Worm Gearbox


The Worm Gearbox, BR Series is designed for applications where high accuracy, minimum backlash, heavy duty cycles (many thousand cycles/hour) are required such as in packaging and handling machines, press feeders, and any kind of servo systems. Standard worm gear sets, or sets as per customers' requirements can be supplied. They can be used in rotary tables of machining centres, robots axis, milling heads, etc. The general design of the gearbox is same as the conventional units. However, the worm gear set is of very special design and manufacture. The opposite flanks of the worm threads are ground with slightly different pitches so that a variation of the thread thickness is obtained when shifting the worm axially. The wheel is hobbed with a special process, so that the opposite flanks of the same teeth have also different pitches, in order to be perfectly matched with the corresponding flanks of the worm threads. This is the only way to ensure perfectly homokinetic input and output speeds, lowest transmission errors, and a very low backlash value (always less than 1 arc minute) that other systems (such as reduction of centre distance) cannot reach. In case where standard range cannot be used, sets can be manufactured with or without adjustable backlash, to customers' special requirements. The company also supplies guaranteed units, with less than 0.005 mm of backlash.

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