The worm gears created by EP are square and so are considerably versatile for mounting. The machining of the elements, carried out using numeric control machines, guarantees maximum precision for the restricted tolerances, making a product which will remain reliable as time passes. The organizations are constructed of aluminium casings from sizes 025 to 090, as the sizes 110, 130 and 150 are made from cast iron. All of the bodies are painted with RAL 9022 aluminium colour to protect the parts from aging and also to give better safety against microblowholes that may be within the aluminium. The gears are supplied with at least one filling plug that’s also used during testing to check for possible leaks. A connection flange enables two gears to end up being combined in order to obtain high equipment ratios. Four sizes of CHPC pre-stage gears can be found to pair with the gears; they are also built in aluminium and are painted just like the worm gears
Gears that are supplied with mounting flanges should be assembled with motors whose shaft and flange tolerances match a “normal class” of quality to avoid vibration and forcing of the input bearing. Motors supplied by Chiaravalli Group S.p.A. guarantee that this requirement is fulfilled. For simple consultation, the correspondence of the size of the B5 and B14 electric motor with the sizes of the shaft and the CHM – WORM GEARED MOTORS AND WORM GEAR UNITS engine connection flange are demonstrated in the next table. Understand that, as the motor connection flanges are individual from the body it is also possible to possess a shaft / flange combination that will not match the table, electronic.g. 19/140, thereby offering adaptability for additional non-unified models like the brushless or immediate current types.