Worm gearboxes are the most commonly used gearboxes in industrial machines.
Worm gearboxes are the most commonly used gearboxes in industrial machines. They owe their popularity to their attractive price, availability, compact design and maintenance-free operation.
Worm gearbox is a gearbox in which two elements work together: a worm (made of hardened steel) and a helix (made of bronze alloy). Gearboxes can be mounted to devices by means of a flange, reaction arm or directly to the body. An important advantage of worm gearboxes is self-locking system.
Chiaravalli worm gearboxes are marked with symbols: CH, CHM. The standard worm gear ratio is in the range from I=5 to I=100. By using a CHPC helical step or by assembling two gearboxes we can achieve a gear ratio up to I=10,000. The efficiency of worm gearboxes ranges from 40% to 85%, depending on the gear ratio. Archimedes’ Chiaravalli worm gearboxes are available in two basic types: CHM and CH.
CHM
- 10 mechanical sizes: 025 – 150
- power: 0,09 – 15 kW
- the gearing range: 5 – 100
- maximum torque: 1560 Nm
- painted in grey RAL 9022
- versions with CHML torque limiter
- possibility of using additional modules
- cylindrical PCs increasing the gearing range to I = 300
WORM GEARBOXES CH
- 6 mechanical sizes: 03 – 08
- power: 0,09 – 4,0 kW
- the gearing range: 7 – 100
- maximum torque: 350 Nm
- painted in grey RAL 9022
- possibility of using additional PC cylindrical modules
- increasing the gearing range to I = 300
Accessories: transfer shafts, fixing flanges, PVC covers, reaction arms.
The characteristic feature of all worm gears is their self-locking system. The gearing range: from 5 to 100. With additional elements such as a shaft’s attachment or when two worm gearboxes are coupled, a gearing of up to 10,000 can be achieved.
For dimensions, diameters, gear ratios and other detailed parameters of all worm gearboxes available from Archimedes, see Chiaravalli’s catalogue.
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