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Chiaravalli CHMRE 030 worm gearbox with an input shaft on both sides and no motor flange
Chiaravalli

CHMRE 030 Worm Gearbox with Double Input Shaft (Ø14 mm output shaft)

Worm Gearboxes

CHMRE 030 — the CHM worm gearbox with a free input shaft on both sides and no motor flange — for drives that take power in on one side and pass it through on the other. Aluminium housing, hollow output shaft with 14 mm bore, keyed; optional output flanges (the F executions on the dimension drawing). Input shaft Ø9 j6 × 20 mm, key 3 mm (dimensions on the input-shaft sheet; everything else as the CHM 030). Supplied in the universal position — it can be mounted in any orientation. Filled for life with synthetic oil — no oil changes, no maintenance.

How to pick from the table: the figures are for a 1400 r/min input (a 4-pole motor's speed) — the ratio sets the output speed, P1 is the input power the catalogue rates the row at and the service factor is the margin at that power. Drive the input shaft slower or faster and the output speed scales with it; ask us to check the rating if your input speed differs.

Product Configuration

Select a row to add it to your quote

CHMRE 030: ratings as the CHM 030 at 1400 r/min input; input shaft Ø9 j6 × 20 mm.

CodeRatioOutput speedInput power P1Output torqueService factor
CHMRE-030 R.7.5 7.5:1 186.7 r/min 0.22 kW 9 Nm 2.1
CHMRE-030 R.10 10:1 140 r/min 0.22 kW 11 Nm 1.6
CHMRE-030 R.15 15:1 93.3 r/min 0.22 kW 16 Nm 1
CHMRE-030 R.20 20:1 70 r/min 0.22 kW 20 Nm 0.9
CHMRE-030 R.25 25:1 56 r/min 0.18 kW 20 Nm 1
CHMRE-030 R.30 30:1 46.7 r/min 0.18 kW 22 Nm 0.9
CHMRE-030 R.40 40:1 35 r/min 0.18 kW 21 Nm 0.8
CHMRE-030 R.50 50:1 28 r/min 0.18 kW 19 Nm 0.8
CHMRE-030 R.60 60:1 23.3 r/min 0.09 kW 18 Nm 0.9
CHMRE-030 R.80 80:1 17.5 r/min 0.09 kW 13 Nm 0.9

Product Information

Reading the table

Each row is one ratio: output speed at 1400 r/min in, the rated input power P1, the output torque at that power and the service factor. Where the catalogue prints a power the gear cannot fully use (marked in the row note), choose by torque, not power.

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.

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