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Chiaravalli CHM 130 worm gearbox
Chiaravalli

CHM 130 Worm Gearbox (Ø45 mm output shaft)

Worm Gearboxes

CHM 130 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 45 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 90 or 100 or 112 or 132 motors (B5 or B14 flange), recommended motors up to 7.5 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-130 R.7.5 132F38 7.5:1 IEC 132 · 38 mm shaft 7.5 kW 186.7 r/min 348 Nm 2.2 48.0 kg
CHM-130 R.10 132F38 10:1 IEC 132 · 38 mm shaft 7.5 kW 140 r/min 455 Nm 1.8 48.0 kg
CHM-130 R.15 132F38 15:1 IEC 132 · 38 mm shaft 7.5 kW 93.3 r/min 660 Nm 1.2 48.0 kg
CHM-130 R.20 132F38 20:1 IEC 132 · 38 mm shaft 7.5 kW 70 r/min 877 Nm 1 48.0 kg
CHM-130 R.25 132F38 25:1 IEC 132 · 38 mm shaft 5.5 kW 56 r/min 785 Nm 1.23 48.0 kg
CHM-130 R.30 100F28 30:1 IEC 100 · 28 mm shaft 3 kW 46.7 r/min 490 Nm 2 48.0 kg
CHM-130 R.30 112F28 30:1 IEC 112 · 28 mm shaft 5.5 kW 46.7 r/min 898 Nm 1.09 48.0 kg
CHM-130 R.30 132F38 30:1 IEC 132 · 38 mm shaft 5.5 kW 46.7 r/min 898 Nm 1.09 48.0 kg
CHM-130 R.40 100F28 40:1 IEC 100 · 28 mm shaft 3 kW 35 r/min 640 Nm 1.65 48.0 kg
CHM-130 R.40 112F28 40:1 IEC 112 · 28 mm shaft 4 kW 35 r/min 853 Nm 1.24 48.0 kg
CHM-130 R.40 132F38 40:1 IEC 132 · 38 mm shaft 4 kW 35 r/min 853 Nm 1.24 48.0 kg
CHM-130 R.50 100F28 50:1 IEC 100 · 28 mm shaft 3 kW 28 r/min 767 Nm 1.2 48.0 kg
CHM-130 R.60 100F28 60:1 IEC 100 · 28 mm shaft 3 kW 23.3 r/min 886 Nm 1.1 48.0 kg
CHM-130 R.80 90F24 80:1 IEC 90 · 24 mm shaft 2.2 kW 17.5 r/min 815 Nm 1.09 48.0 kg
CHM-130 R.80 100F28 80:1 IEC 100 · 28 mm shaft 2.2 kW 17.5 r/min 815 Nm 1.09 48.0 kg
CHM-130 R.100 90F24 100:1 IEC 90 · 24 mm shaft 1.5 kW 14 r/min 652 Nm 1.1 48.0 kg
CHM-130 R.100 100F28 100:1 IEC 100 · 28 mm shaft 1.5 kW 14 r/min 652 Nm 1.1 48.0 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

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