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Chiaravalli CHM/CHM double worm gearbox with motor
Chiaravalli

CHM 040/075 Double Worm Gearbox (ratios 300–2400:1)

Worm Gearboxes

Two CHM worm gearboxes combined — a CHM 040 driving a CHM 075 — for total ratios 300–2400:1 and output speeds down to 0.6 r/min. Aluminium housings, hollow output shaft with 28 mm bore, keyed; optional output flanges as the CHM 075. The motor bolts to the CHM 040's IEC flange (IEC 56 or 63 or 71). The execution (OAD, OAS, OBD, OBS, VAD, VAS, VBD, VBS) sets where the first gear sits on the second — OBS unless you specify otherwise; the mounting position refers to the second gear. Supplied for the B3 mounting position — tell us if you need a different orientation (see the mounting-position drawing). Filled for life with synthetic oil — no oil changes, no maintenance.

Supplied without motor. The first gear can also be ordered as a CHMR (input shaft) and the second as a CHME (free input shaft end) — ask us.

How to pick from the table: with a standard 4-pole motor (1400 r/min) the total ratio sets the output speed; P1 is the motor power the catalogue pairs with the row and the output torque is at that power. Where the printed power is more than the gear allows (row note), choose by torque. Other ratio combinations of the two single gears are possible on request.

Product Configuration

Select a row to add it to your quote

CHM 040/075: 4-pole motor at 1400 r/min on the CHM 040; execution OBS unless specified.

CodeRatioMotor flangeMotor P1Output speedOutput torque Weight
CHM-040/075 R.300 56F9 300:1 IEC 56 · 9 mm shaft 0.37 kW 4.7 r/min 405 Nm 11.5 kg
CHM-040/075 R.300 63F11 300:1 IEC 63 · 11 mm shaft 0.37 kW 4.7 r/min 405 Nm 11.5 kg
CHM-040/075 R.300 71F14 300:1 IEC 71 · 14 mm shaft 0.37 kW 4.7 r/min 405 Nm 11.5 kg
CHM-040/075 R.400 56F9 400:1 IEC 56 · 9 mm shaft 0.25 kW 3.5 r/min 336 Nm 11.5 kg
CHM-040/075 R.400 63F11 400:1 IEC 63 · 11 mm shaft 0.25 kW 3.5 r/min 336 Nm 11.5 kg
CHM-040/075 R.400 71F14 400:1 IEC 71 · 14 mm shaft 0.25 kW 3.5 r/min 336 Nm 11.5 kg
CHM-040/075 R.500 56F9 500:1 IEC 56 · 9 mm shaft 0.25 kW 2.8 r/min 307 Nm 11.5 kg
CHM-040/075 R.500 63F11 500:1 IEC 63 · 11 mm shaft 0.25 kW 2.8 r/min 307 Nm 11.5 kg
CHM-040/075 R.500 71F14 500:1 IEC 71 · 14 mm shaft 0.25 kW 2.8 r/min 307 Nm 11.5 kg
CHM-040/075 R.600 56F9 600:1 IEC 56 · 9 mm shaft 0.18 kW 2.3 r/min 362 Nm 11.5 kg
CHM-040/075 R.600 63F11 600:1 IEC 63 · 11 mm shaft 0.18 kW 2.3 r/min 362 Nm 11.5 kg
CHM-040/075 R.600 71F14 600:1 IEC 71 · 14 mm shaft 0.18 kW 2.3 r/min 362 Nm 11.5 kg
CHM-040/075 R.750 56F9 750:1 IEC 56 · 9 mm shaft 0.18 kW 1.9 r/min 391 Nm 11.5 kg
CHM-040/075 R.750 63F11 750:1 IEC 63 · 11 mm shaft 0.18 kW 1.9 r/min 391 Nm 11.5 kg
CHM-040/075 R.750 71F14 750:1 IEC 71 · 14 mm shaft 0.18 kW 1.9 r/min 391 Nm 11.5 kg
CHM-040/075 R.900 56F9 900:1 IEC 56 · 9 mm shaft 0.18 kW 1.6 r/min 325 Nm 11.5 kg
CHM-040/075 R.900 63F11 900:1 IEC 63 · 11 mm shaft 0.18 kW 1.6 r/min 325 Nm 11.5 kg
CHM-040/075 R.900 71F14 900:1 IEC 71 · 14 mm shaft 0.18 kW 1.6 r/min 325 Nm 11.5 kg
CHM-040/075 R.1200 56F9 1200:1 IEC 56 · 9 mm shaft 0.18 kW 1.2 r/min 359 Nm 11.5 kg
CHM-040/075 R.1200 63F11 1200:1 IEC 63 · 11 mm shaft 0.18 kW 1.2 r/min 359 Nm 11.5 kg
CHM-040/075 R.1200 71F14 1200:1 IEC 71 · 14 mm shaft 0.18 kW 1.2 r/min 359 Nm 11.5 kg
CHM-040/075 R.1500 56F9 1500:1 IEC 56 · 9 mm shaft 0.09 kW 0.9 r/min 360 Nm 11.5 kg
CHM-040/075 R.1500 63F11 1500:1 IEC 63 · 11 mm shaft 0.09 kW 0.9 r/min 360 Nm 11.5 kg
CHM-040/075 R.1500 71F14 1500:1 IEC 71 · 14 mm shaft 0.09 kW 0.9 r/min 360 Nm 11.5 kg
CHM-040/075 R.1800 56F9 1800:1 IEC 56 · 9 mm shaft 0.09 kW 0.8 r/min 404 Nm 11.5 kg
CHM-040/075 R.1800 63F11 1800:1 IEC 63 · 11 mm shaft 0.09 kW 0.8 r/min 404 Nm 11.5 kg
CHM-040/075 R.1800 71F14 1800:1 IEC 71 · 14 mm shaft 0.09 kW 0.8 r/min 404 Nm 11.5 kg
CHM-040/075 R.2400 56F9 2400:1 IEC 56 · 9 mm shaft 0.09 kW 0.6 r/min 330 Nm 11.5 kg
CHM-040/075 R.2400 63F11 2400:1 IEC 63 · 11 mm shaft 0.09 kW 0.6 r/min 330 Nm 11.5 kg
CHM-040/075 R.2400 71F14 2400:1 IEC 71 · 14 mm shaft 0.09 kW 0.6 r/min 330 Nm 11.5 kg

Product Information

Motor pole count

All table figures assume a 4-pole motor (1400 r/min input) — the standard choice for most applications. A 2-pole motor (2800 r/min) doubles the output speed and a 6-pole motor (900 r/min) reduces it, and the power and torque ratings change with them — if you're running anything other than 4-pole, contact us and we'll size it for you.

Reading the table

Each row is one total ratio: output speed at 1400 r/min in, the catalogue's motor power P1 and the output torque at that power. The ratios listed are the most frequently requested; multiple other combinations of the two single gears' ratios can be made.

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