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Chiaravalli CHC 30 helical gear unit
Chiaravalli

CHC 30 Helical Gear Unit (Ø30 mm output shaft)

Helical Gearboxes

CHC 30 helical gear unit — Chiaravalli's modular helical series with an aluminium housing, carbonised and ground gears, and a standard IEC motor input (B5 or B14 flange) — no coupling or adaptor needed: the motor bolts straight on. Solid keyed output shaft, Ø30 mm h6; foot or output-flange mounting (see the dimension sheet), any mounting position. Lubricated for life with synthetic oil (Shell Tivela S 320) in the standard position — for V6 / V3 mounting tell us, the fill quantity changes. Fits IEC 80, 90, 100, 112 motors, recommended motors up to 4 kW. Where the table notes a reduction bushing, the motor shaft is adapted to the pinion with Chiaravalli's metal bushing (supplied with the unit).

Supplied without motor. You are choosing the gear unit 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 5.5:1 gives 255 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: textile, food and beverage, chemical and packaging machinery — conveyors, mixers, OEM drives.

Product Configuration

Select a row to add it to your quote

CodeRatioMotor flangeMotorOutput speedOutput torqueService factor Weight
CHC-30 R.5.5 80F19 5.5:1 IEC 80 · 19 mm shaft 1.1 kW 255 r/min 40 Nm 3.79 9.2 kg
CHC-30 R.5.5 90F24 5.5:1 IEC 90 · 24 mm shaft 2.2 kW 255 r/min 79 Nm 1.9 9.2 kg
CHC-30 R.5.5 100F28 5.5:1 IEC 100 · 28 mm shaft 3 kW 255 r/min 108 Nm 1.39 9.2 kg
CHC-30 R.5.5 112F28 5.5:1 IEC 112 · 28 mm shaft 4 kW 255 r/min 144 Nm 1.04 9.2 kg
CHC-30 R.7.9 80F19 7.9:1 IEC 80 · 19 mm shaft 1.1 kW 176 r/min 57 Nm 3.15 9.2 kg
CHC-30 R.7.9 90F24 7.9:1 IEC 90 · 24 mm shaft 2.2 kW 176 r/min 114 Nm 1.57 9.2 kg
CHC-30 R.7.9 100F28 7.9:1 IEC 100 · 28 mm shaft 3 kW 176 r/min 156 Nm 1.15 9.2 kg
CHC-30 R.7.9 112F28 7.9:1 IEC 112 · 28 mm shaft 4 kW 176 r/min 208 Nm 0.87 9.2 kg
CHC-30 R.10.2 80F19 10.2:1 IEC 80 · 19 mm shaft 1.1 kW 137 r/min 74 Nm 3.25 9.2 kg
CHC-30 R.10.2 90F24 10.2:1 IEC 90 · 24 mm shaft 2.2 kW 137 r/min 148 Nm 1.62 9.2 kg
CHC-30 R.10.2 100F28 10.2:1 IEC 100 · 28 mm shaft 3 kW 137 r/min 202 Nm 1.19 9.2 kg
CHC-30 R.10.2 112F28 10.2:1 IEC 112 · 28 mm shaft 4 kW 137 r/min 269 Nm 0.89 9.2 kg
CHC-30 R.12.3 80F19 12.3:1 IEC 80 · 19 mm shaft 1.1 kW 113.8 r/min 89 Nm 2.92 9.2 kg
CHC-30 R.12.3 90F24 12.3:1 IEC 90 · 24 mm shaft 2.2 kW 113.8 r/min 178 Nm 1.46 9.2 kg
CHC-30 R.12.3 100F28 12.3:1 IEC 100 · 28 mm shaft 3 kW 113.8 r/min 243 Nm 1.07 9.2 kg
CHC-30 R.12.3 112F28 12.3:1 IEC 112 · 28 mm shaft 4 kW 113.8 r/min 324 Nm 0.8 9.2 kg
CHC-30 R.15 80F19 15:1 IEC 80 · 19 mm shaft 1.1 kW 93 r/min 108 Nm 2.4 9.2 kg
CHC-30 R.15 90F24 15:1 IEC 90 · 24 mm shaft 2.2 kW 93 r/min 217 Nm 1.2 9.2 kg
CHC-30 R.15 100F28 15:1 IEC 100 · 28 mm shaft 2.2 kW 93 r/min 217 Nm 1.2 9.2 kg
CHC-30 R.15 112F28 15:1 IEC 112 · 28 mm shaft 4 kW 93 r/min 394 Nm 0.66 9.2 kg
CHC-30 R.17.3 80F19 17.3:1 IEC 80 · 19 mm shaft 1.1 kW 81 r/min 125 Nm 2.25 9.2 kg
CHC-30 R.17.3 90F24 17.3:1 IEC 90 · 24 mm shaft 2.2 kW 81 r/min 249 Nm 1.12 9.2 kg
CHC-30 R.17.3 100F28 17.3:1 IEC 100 · 28 mm shaft 2.2 kW 81 r/min 249 Nm 1.12 9.2 kg
CHC-30 R.17.3 112F28 17.3:1 IEC 112 · 28 mm shaft 4 kW 81 r/min 453 Nm 0.62 9.2 kg
CHC-30 R.21.7 80F19 21.7:1 IEC 80 · 19 mm shaft 1.1 kW 64.5 r/min 157 Nm 1.78 9.2 kg
CHC-30 R.21.7 90F24 21.7:1 IEC 90 · 24 mm shaft 1.5 kW 64.5 r/min 214 Nm 1.31 9.2 kg
CHC-30 R.21.7 100F28 21.7:1 IEC 100 · 28 mm shaft 2.2 kW 64.5 r/min 314 Nm 0.89 9.2 kg
CHC-30 R.21.7 112F28 21.7:1 IEC 112 · 28 mm shaft 4 kW 64.5 r/min 571 Nm 0.49 9.2 kg
CHC-30 R.25 80F19 25:1 IEC 80 · 19 mm shaft 1.1 kW 56 r/min 180 Nm 1.66 9.2 kg
CHC-30 R.25 90F24 25:1 IEC 90 · 24 mm shaft 1.5 kW 56 r/min 246 Nm 1.22 9.2 kg
CHC-30 R.25 100F28 25:1 IEC 100 · 28 mm shaft 2.2 kW 56 r/min 361 Nm 0.83 9.2 kg
CHC-30 R.25 112F28 25:1 IEC 112 · 28 mm shaft 4 kW 56 r/min 656 Nm 0.46 9.2 kg
CHC-30 R.30.6 80F19 30.6:1 IEC 80 · 19 mm shaft 1.1 kW 45.8 r/min 220 Nm 1.36 9.2 kg
CHC-30 R.30.6 90F24 30.6:1 IEC 90 · 24 mm shaft 1.5 kW 45.8 r/min 300 Nm 1 9.2 kg
CHC-30 R.30.6 100F28 30.6:1 IEC 100 · 28 mm shaft 2.2 kW 45.8 r/min 440 Nm 0.68 9.2 kg
CHC-30 R.30.6 112F28 30.6:1 IEC 112 · 28 mm shaft 4 kW 45.8 r/min 800 Nm 0.38 9.2 kg
CHC-30 R.34.6 80F19 34.6:1 IEC 80 · 19 mm shaft 1.1 kW 40.5 r/min 250 Nm 1.2 9.2 kg
CHC-30 R.34.6 90F24 34.6:1 IEC 90 · 24 mm shaft 1.1 kW 40.5 r/min 250 Nm 1.2 9.2 kg
CHC-30 R.34.6 100F28 34.6:1 IEC 100 · 28 mm shaft 2.2 kW 40.5 r/min 500 Nm 0.6 9.2 kg
CHC-30 R.34.6 112F28 34.6:1 IEC 112 · 28 mm shaft 4 kW 40.5 r/min 909 Nm 0.33 9.2 kg
CHC-30 R.38.7 80F19 38.7:1 IEC 80 · 19 mm shaft 1.1 kW 36.1 r/min 280 Nm 1.07 9.2 kg
CHC-30 R.38.7 90F24 38.7:1 IEC 90 · 24 mm shaft 1.1 kW 36.1 r/min 280 Nm 1.07 9.2 kg
CHC-30 R.38.7 100F28 38.7:1 IEC 100 · 28 mm shaft 2.2 kW 36.1 r/min 559 Nm 0.54 9.2 kg
CHC-30 R.38.7 112F28 38.7:1 IEC 112 · 28 mm shaft 4 kW 36.1 r/min 1017 Nm 0.3 9.2 kg
CHC-30 R.43.7 80F19 43.7:1 IEC 80 · 19 mm shaft 0.75 kW 32 r/min 216 Nm 1.39 9.2 kg
CHC-30 R.43.7 90F24 43.7:1 IEC 90 · 24 mm shaft 1.1 kW 32 r/min 317 Nm 0.95 9.2 kg
CHC-30 R.43.7 100F28 43.7:1 IEC 100 · 28 mm shaft 2.2 kW 32 r/min 635 Nm 0.47 9.2 kg
CHC-30 R.43.7 112F28 43.7:1 IEC 112 · 28 mm shaft 4 kW 32 r/min 1154 Nm 0.26 9.2 kg
CHC-30 R.50 80F19 50:1 IEC 80 · 19 mm shaft 0.75 kW 28 r/min 245 Nm 1.23 9.2 kg
CHC-30 R.50 90F24 50:1 IEC 90 · 24 mm shaft 1.1 kW 28 r/min 359 Nm 0.84 9.2 kg
CHC-30 R.50 100F28 50:1 IEC 100 · 28 mm shaft 2.2 kW 28 r/min 717 Nm 0.42 9.2 kg
CHC-30 R.50 112F28 50:1 IEC 112 · 28 mm shaft 4 kW 28 r/min 1304 Nm 0.23 9.2 kg
CHC-30 R.58.1 80F19 58.1:1 IEC 80 · 19 mm shaft 0.75 kW 24 r/min 285 Nm 1.05 9.2 kg
CHC-30 R.58.1 90F24 58.1:1 IEC 90 · 24 mm shaft 1.1 kW 24 r/min 418 Nm 0.72 9.2 kg
CHC-30 R.58.1 100F28 58.1:1 IEC 100 · 28 mm shaft 2.2 kW 24 r/min 835 Nm 0.36 9.2 kg
CHC-30 R.58.1 112F28 58.1:1 IEC 112 · 28 mm shaft 4 kW 24 r/min 1519 Nm 0.2 9.2 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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