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Chiaravalli CHM 150 worm gearbox
Chiaravalli

CHM 150 Worm Gearbox (Ø50 mm output shaft)

Worm Gearboxes

CHM 150 worm gearbox with cast iron housing and a standard IEC motor input flange — no coupling or adaptor needed: the motor bolts straight on. Hollow output shaft with 50 mm bore, keyed — it mounts directly onto your driven shaft, and optional output flanges (the F executions on the dimension drawing) are available if you need to flange-mount it. Fits IEC 100 or 112 or 132 or 160 motors (B5 flange), recommended motors up to 15 kW. Supplied for the B3 mounting position — tell us if you need a different orientation (see the mounting-position drawing). Lubricated with mineral oil; the oil quantity is set for the mounting position, so the orientation matters when ordering.

Supplied without motor. You are choosing the gearbox only — ask us to quote a suitable motor together with it if you'd like both.

How to pick from the table: with a standard 4-pole motor (1400 r/min), the ratio sets the output speed — e.g. ratio 7.5:1 gives 187 r/min at the output shaft. Choose the row whose output speed and torque match your application, then the flange that matches your motor (the frame size and shaft diameter are on the motor's nameplate). 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.

Typical applications: conveyor systems, OEM machinery, automation and robotics, agricultural and greenhouse equipment.

Product Configuration

Select a row to add it to your quote

Code RatioMotor flangeMotorOutput speedOutput torqueService factor Weight
CHM-150 R.7.5 160F42 7.5:1 IEC 160 · 42 mm shaft 15 kW 186.7 r/min 680 Nm 1.6 84.0 kg
CHM-150 R.10 160F42 10:1 IEC 160 · 42 mm shaft 15 kW 140 r/min 905 Nm 1.2 84.0 kg
CHM-150 R.15 160F42 15:1 IEC 160 · 42 mm shaft 11 kW 93.3 r/min 961 Nm 1.23 84.0 kg
CHM-150 R.20 160F42 20:1 IEC 160 · 42 mm shaft 11 kW 70 r/min 1270 Nm 1 84.0 kg
CHM-150 R.25 160F42 25:1 IEC 160 · 42 mm shaft 7.5 kW 56 r/min 1036 Nm 1.17 84.0 kg
CHM-150 R.30 132F38 30:1 IEC 132 · 38 mm shaft 5.5 kW 46.7 r/min 909 Nm 1.09 84.0 kg
CHM-150 R.40 132F38 40:1 IEC 132 · 38 mm shaft 5.5 kW 35 r/min 1144 Nm 1.23 84.0 kg
CHM-150 R.50 132F38 50:1 IEC 132 · 38 mm shaft 4 kW 28 r/min 1022 Nm 1.24 84.0 kg
CHM-150 R.60 132F38 60:1 IEC 132 · 38 mm shaft 4 kW 23.3 r/min 1171 Nm 1.1 84.0 kg
CHM-150 R.80 100F28 80:1 IEC 100 · 28 mm shaft 3 kW 17.5 r/min 1073 Nm 1.07 84.0 kg
CHM-150 R.80 112F28 80:1 IEC 112 · 28 mm shaft 4 kW 17.5 r/min 1430 Nm 0.8 84.0 kg
CHM-150 R.100 100F28 100:1 IEC 100 · 28 mm shaft 2.2 kW 14 r/min 953 Nm 1.09 84.0 kg
CHM-150 R.100 112F28 100:1 IEC 112 · 28 mm shaft 4 kW 14 r/min 1733 Nm 0.6 84.0 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.

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 motor 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.

Check your selection with the Chiaravalli configurator

Need help specifying this product?

Our technical team can help you specify the right component. Add it to your quote basket above, or contact us directly.

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