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Chiaravalli CHE 08 worm gearbox with a motor flange and a free input shaft end on the opposite side
Chiaravalli

CHE 08 Worm Gearbox with Motor Flange and Free Input Shaft (Ø35 mm output shaft)

Worm Gearboxes

CHE 08 — the CH 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 35 mm bore, keyed; foot mounting with the A (feet) body as the catalogue's CHR/CHRE drawings — the ..P flange-output execution is available too. Input shaft Ø25 h6 × 50 mm with M8 centre thread, output 35 H7 hollow bore with 10 mm keyway (body and shaft dimensions on the CHR/CHRE sheet; everything else as the CH 08). Filled for life with synthetic oil — no oil changes, no maintenance; aluminium housing.

Supplied without motor. Fits IEC 80 or 90 or 100 or 112 motors (B5 or B14 flange as the CH 08 — only the frames the catalogue lists for each ratio are offered).

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

CHE 08: ratings as the CH 08 at 1400 r/min input; the free input shaft end is Ø25 h6 × 50 mm.

CodeRatioMotor flangeMotorOutput speedOutput torqueService factor
CHE-08 R.7 90F24 7:1 IEC 90 · 24 mm shaft 1.85 kW 200 r/min 79 Nm 3.24
CHE-08 R.7 100F28 7:1 IEC 100 · 28 mm shaft 3 kW 200 r/min 128 Nm 2
CHE-08 R.7 112F28 7:1 IEC 112 · 28 mm shaft 4 kW 200 r/min 170 Nm 1.5
CHE-08 R.10 90F24 10:1 IEC 90 · 24 mm shaft 1.85 kW 140 r/min 111 Nm 2.59
CHE-08 R.10 100F28 10:1 IEC 100 · 28 mm shaft 3 kW 140 r/min 180 Nm 1.6
CHE-08 R.10 112F28 10:1 IEC 112 · 28 mm shaft 4 kW 140 r/min 240 Nm 1.2
CHE-08 R.15 90F24 15:1 IEC 90 · 24 mm shaft 1.85 kW 93 r/min 162 Nm 1.95
CHE-08 R.15 100F28 15:1 IEC 100 · 28 mm shaft 3 kW 93 r/min 263 Nm 1.2
CHE-08 R.15 112F28 15:1 IEC 112 · 28 mm shaft 4 kW 93 r/min 350 Nm 0.9
CHE-08 R.20 90F24 20:1 IEC 90 · 24 mm shaft 1.85 kW 70 r/min 210 Nm 1.46
CHE-08 R.20 100F28 20:1 IEC 100 · 28 mm shaft 2.2 kW 70 r/min 249 Nm 1.23
CHE-08 R.23 90F24 23:1 IEC 90 · 24 mm shaft 1.85 kW 61 r/min 235 Nm 1.31
CHE-08 R.23 100F28 23:1 IEC 100 · 28 mm shaft 2.2 kW 61 r/min 280 Nm 1.1
CHE-08 R.30 90F24 30:1 IEC 90 · 24 mm shaft 1.85 kW 47 r/min 286 Nm 1.31
CHE-08 R.30 100F28 30:1 IEC 100 · 28 mm shaft 2.2 kW 47 r/min 340 Nm 1.1
CHE-08 R.40 80F19 40:1 IEC 80 · 19 mm shaft 1.1 kW 35 r/min 202 Nm 1.51
CHE-08 R.40 90F24 40:1 IEC 90 · 24 mm shaft 1.5 kW 35 r/min 276 Nm 1.11
CHE-08 R.46 80F19 46:1 IEC 80 · 19 mm shaft 1.1 kW 30 r/min 249 Nm 1.36
CHE-08 R.46 90F24 46:1 IEC 90 · 24 mm shaft 1.5 kW 30 r/min 340 Nm 1
CHE-08 R.56 80F19 56:1 IEC 80 · 19 mm shaft 1.1 kW 25 r/min 290 Nm 1
CHE-08 R.56 90F24 56:1 IEC 90 · 24 mm shaft 1.1 kW 25 r/min 290 Nm 1
CHE-08 R.64 80F19 64:1 IEC 80 · 19 mm shaft 0.75 kW 22 r/min 198 Nm 1.32
CHE-08 R.64 90F24 64:1 IEC 90 · 24 mm shaft 0.75 kW 22 r/min 198 Nm 1.32
CHE-08 R.80 80F19 80:1 IEC 80 · 19 mm shaft 0.75 kW 17 r/min 260 Nm 1
CHE-08 R.80 90F24 80:1 IEC 90 · 24 mm shaft 0.75 kW 17 r/min 260 Nm 1
CHE-08 R.100 80F19 100:1 IEC 80 · 19 mm shaft 0.55 kW 14 r/min 220 Nm 1

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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