The worm gears created by EP are square and are considerably versatile for mounting. The machining of the elements, carried out using numeric control devices, guarantees optimum precision for the limited tolerances, making a product that will remain reliable as time passes. The groups 201902161739132216621are constructed with aluminium casings from sizes 025 to 090, as the sizes 110, 130 and 150 are made from cast iron. All the bodies are painted with RAL 9022 aluminium color to protect the parts from ageing and to give better safety against microblowholes which may be present in the aluminium. The gears are CHM – WORM GEARED MOTORS AND WORM GEAR UNITS supplied with at least one filling connect that is also used during screening to check for possible leaks. A connection flange allows two gears to end up being combined to be able 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 so are painted like the worm gears
Gears that are given mounting flanges should be assembled with motors whose shaft and flange tolerances match a “normal course” of quality in order to avoid vibration and forcing of the insight bearing. Motors supplied by Chiaravalli Group S.p.A. guarantee that requirement is fulfilled. For ease of consultation, the correspondence of how big is the B5 and B14 electric motor with the sizes of the shaft and the motor connection flange are proven in the next table. Remember that, as the motor connection flanges are individual from the body it is also possible to possess a shaft / flange mixture that does not correspond to the table, e.g. 19/140, thereby offering adaptability for additional non-unified models like the brushless or direct current types.