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Chiaravalli CHME 040 worm gearbox with a motor flange and a free input shaft end on the opposite side
Chiaravalli

CHME 040 Worm Gearbox with Motor Flange and Free Input Shaft (Ø18 mm output shaft)

Worm Gearboxes

CHME 040 — the CHM worm gearbox with its IEC motor flange plus a free input shaft end on the opposite side — for a hand wheel, an encoder, a brake or a second drive on the input. Aluminium housing, hollow output shaft with 18 mm bore, keyed; optional output flanges (the F executions on the dimension drawing). Input shaft Ø11 j6 × 23 mm, key 4 mm (dimensions on the input-shaft sheet; everything else as the CHM 040). Supplied in the universal position — it can be mounted in any orientation. Filled for life with synthetic oil — no oil changes, no maintenance.

Supplied without motor. Fits IEC 56 or 63 or 71 motors (B5 or B14 flange as the CHM 040).

How to pick from the table: with a standard 4-pole motor (1400 r/min) the ratio sets the output speed. Choose the row whose output speed and torque match your application, then the flange that matches your motor. The Motor column lists the motors that fit that row — pick yours and the output torque and service factor update to match. More in the Selection Guide tab below.

Product Configuration

Select a row to add it to your quote

CHME 040: ratings as the CHM 040 at 1400 r/min input; the free input shaft end is Ø11 j6 × 23 mm.

CodeRatioMotor flangeMotorOutput speedOutput torqueService factor
CHME-040 R.7.5 63F11 7.5:1 IEC 63 · 11 mm shaft 0.25 kW 186.7 r/min 10 Nm 3.52
CHME-040 R.7.5 71F14 7.5:1 IEC 71 · 14 mm shaft 0.55 kW 186.7 r/min 22 Nm 1.6
CHME-040 R.10 63F11 10:1 IEC 63 · 11 mm shaft 0.25 kW 140 r/min 14 Nm 3.08
CHME-040 R.10 71F14 10:1 IEC 71 · 14 mm shaft 0.55 kW 140 r/min 30 Nm 1.4
CHME-040 R.15 63F11 15:1 IEC 63 · 11 mm shaft 0.25 kW 93.3 r/min 20 Nm 1.98
CHME-040 R.15 71F14 15:1 IEC 71 · 14 mm shaft 0.37 kW 93.3 r/min 30 Nm 1.34
CHME-040 R.20 63F11 20:1 IEC 63 · 11 mm shaft 0.25 kW 70 r/min 17 Nm 2.2
CHME-040 R.20 71F14 20:1 IEC 71 · 14 mm shaft 0.55 kW 70 r/min 38 Nm 1
CHME-040 R.25 63F11 25:1 IEC 63 · 11 mm shaft 0.25 kW 56 r/min 30 Nm 1.33
CHME-040 R.25 71F14 25:1 IEC 71 · 14 mm shaft 0.25 kW 56 r/min 30 Nm 1.33
CHME-040 R.30 63F11 30:1 IEC 63 · 11 mm shaft 0.25 kW 46.7 r/min 35 Nm 1.18
CHME-040 R.30 71F14 30:1 IEC 71 · 14 mm shaft 0.25 kW 46.7 r/min 35 Nm 1.18
CHME-040 R.40 63F11 40:1 IEC 63 · 11 mm shaft 0.18 kW 35 r/min 31 Nm 1.25
CHME-040 R.40 71F14 40:1 IEC 71 · 14 mm shaft 0.18 kW 35 r/min 31 Nm 1.25
CHME-040 R.50 56F9 50:1 IEC 56 · 9 mm shaft 0.12 kW 28 r/min 24 Nm 1.65
CHME-040 R.50 63F11 50:1 IEC 63 · 11 mm shaft 0.18 kW 28 r/min 36 Nm 1.1
CHME-040 R.60 56F9 60:1 IEC 56 · 9 mm shaft 0.12 kW 23.3 r/min 28 Nm 1.2
CHME-040 R.60 63F11 60:1 IEC 63 · 11 mm shaft 0.12 kW 23.3 r/min 28 Nm 1.2
CHME-040 R.80 56F9 80:1 IEC 56 · 9 mm shaft 0.12 kW 17.5 r/min 24 Nm 1.2
CHME-040 R.80 63F11 80:1 IEC 63 · 11 mm shaft 0.12 kW 17.5 r/min 24 Nm 1.2
CHME-040 R.100 56F9 100:1 IEC 56 · 9 mm shaft 0.12 kW 14 r/min 23 Nm 1.2
CHME-040 R.100 63F11 100:1 IEC 63 · 11 mm shaft 0.12 kW 14 r/min 23 Nm 1.2

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.

Service factor — the number that decides how long your gearbox lives

It's the safety margin between what the gearbox can handle and what the drive asks of it: 1.0 means the gearbox works exactly at its rated limit; higher means reserve capacity — a cooler, quieter drive and a much longer life. As a guide: smooth, steady loads (light conveyors, centrifugal pumps) are fine near 1.0; moderate loads (heavier conveyors, packing machines) deserve 1.3 or more; heavy duty (mixers, bucket elevators, frequent starts, long running hours) should sit at 1.5–2.0.

If the service factor turns red after you pick a motor, that combination is below 1.0 — the motor can overload the gearbox in continuous use. It may be acceptable for light, intermittent duty, but for anything continuous choose a smaller motor, a different ratio, or the next gearbox size up — or ask us and we'll size it with you.

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