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Chiaravalli CH-G D 302 shaft mounted gear unit (chiaravalli.com product image)
Chiaravalli

CH-G D 302 Shaft Mounted Gear Unit (Ø30 mm hollow output shaft)

Cast Iron Gearboxes CH-G

CH-G D 302 parallel shaft mounted gear unit — Chiaravalli's cast iron series: two-stage, size 30, ratios 8.81:1 to 73.89:1. Hollow output shaft Ø30 mm H7 (D version; the M version has a solid shaft). Made to order: the catalogue lists every D/M version (B14 or B5 flange, KS shrink disc, LT rubber buffer, Ç fixing element, M solid shaft) as available on request — ask us for the lead time. Backstop device available on request (specify the free direction of rotation). PAM motor input for IEC 71, 80, 90, 100, 112 motors.

Supplied without motor. You are choosing the gear unit with its PAM motor adapter — 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 73.89:1 gives 19 r/min at the output shaft. Each row shows the catalogue's maximum output torque (M2max at service factor 1) and the largest 4-pole motor that reaches it (P1max, 0.72 to 2.95 kW on this size). Choose the row whose output speed and torque match your application, then the flange that matches your motor (the frame size is on the motor's nameplate — only the frames the catalogue lists for that ratio are offered). The Motor column lists the 4-pole motors that fit that flange — pick yours and the output torque and service factor update to match. FR1 / FR2 are the permissible radial loads on the input and output shafts. More in the Selection Guide tab below.

Mounting position M1 is standard — specify yours when ordering (see the mounting-positions image). Cast iron housing.

Product Configuration

Select a row to add it to your quote

Code RatioMotor flangeMotorOutput speedOutput torqueService factorRadial load FR1Radial load FR2GRRadial load FR2 Weight
CH-G D302 73.89 PAM71 73.89:1 IEC 71 · 14 mm shaft 0.55 kW 18.9 r/min 267 Nm 1.31 1.2 kN 6 kN 6 kN 20.0 kg
CH-G D302 73.89 PAM80 73.89:1 IEC 80 · 19 mm shaft 0.55 kW 18.9 r/min 267 Nm 1.31 1.2 kN 6 kN 6 kN 21.0 kg
CH-G D302 73.89 PAM90 73.89:1 IEC 90 · 24 mm shaft 1.1 kW 18.9 r/min 535 Nm 0.65 1.2 kN 6 kN 6 kN 21.0 kg
CH-G D302 58.73 PAM71 58.73:1 IEC 71 · 14 mm shaft 0.55 kW 23.8 r/min 214 Nm 1.64 1.2 kN 6 kN 6 kN 20.0 kg
CH-G D302 58.73 PAM80 58.73:1 IEC 80 · 19 mm shaft 0.75 kW 23.8 r/min 292 Nm 1.2 1.2 kN 6 kN 6 kN 21.0 kg
CH-G D302 58.73 PAM90 58.73:1 IEC 90 · 24 mm shaft 1.1 kW 23.8 r/min 428 Nm 0.82 1.2 kN 6 kN 6 kN 21.0 kg
CH-G D302 53.04 PAM71 53.04:1 IEC 71 · 14 mm shaft 0.55 kW 26.4 r/min 193 Nm 1.82 1.2 kN 5.9 kN 5.9 kN 20.0 kg
CH-G D302 53.04 PAM80 53.04:1 IEC 80 · 19 mm shaft 0.75 kW 26.4 r/min 263 Nm 1.33 1.2 kN 5.9 kN 5.9 kN 21.0 kg
CH-G D302 53.04 PAM90 53.04:1 IEC 90 · 24 mm shaft 1.1 kW 26.4 r/min 385 Nm 0.91 1.2 kN 5.9 kN 5.9 kN 21.0 kg
CH-G D302 47.91 PAM71 47.91:1 IEC 71 · 14 mm shaft 0.55 kW 29.2 r/min 173 Nm 2.02 1.1 kN 5.6 kN 5.6 kN 20.0 kg
CH-G D302 47.91 PAM80 47.91:1 IEC 80 · 19 mm shaft 1.1 kW 29.2 r/min 347 Nm 1.01 1.1 kN 5.6 kN 5.6 kN 21.0 kg
CH-G D302 47.91 PAM90 47.91:1 IEC 90 · 24 mm shaft 1.1 kW 29.2 r/min 347 Nm 1.01 1.1 kN 5.6 kN 5.6 kN 21.0 kg
CH-G D302 43.27 PAM71 43.27:1 IEC 71 · 14 mm shaft 0.55 kW 32.4 r/min 157 Nm 2.24 1.1 kN 5.4 kN 5.4 kN 20.0 kg
CH-G D302 43.27 PAM80 43.27:1 IEC 80 · 19 mm shaft 1.1 kW 32.4 r/min 313 Nm 1.12 1.1 kN 5.4 kN 5.4 kN 21.0 kg
CH-G D302 43.27 PAM90 43.27:1 IEC 90 · 24 mm shaft 1.1 kW 32.4 r/min 313 Nm 1.12 1.1 kN 5.4 kN 5.4 kN 21.0 kg
CH-G D302 40.53 PAM71 40.53:1 IEC 71 · 14 mm shaft 0.55 kW 34.5 r/min 147 Nm 2.38 1.1 kN 5.2 kN 5.2 kN 20.0 kg
CH-G D302 40.53 PAM80 40.53:1 IEC 80 · 19 mm shaft 1.1 kW 34.5 r/min 294 Nm 1.19 1.1 kN 5.2 kN 5.2 kN 21.0 kg
CH-G D302 40.53 PAM90 40.53:1 IEC 90 · 24 mm shaft 1.1 kW 34.5 r/min 294 Nm 1.19 1.1 kN 5.2 kN 5.2 kN 21.0 kg
CH-G D302 40.53 PAM100 40.53:1 IEC 100 · 28 mm shaft 2.2 kW 34.5 r/min 588 Nm 0.6 1.1 kN 5.2 kN 5.2 kN 25.0 kg
CH-G D302 40.53 PAM112 40.53:1 IEC 112 · 28 mm shaft 4 kW 34.5 r/min 1069 Nm 0.33 1.1 kN 5.2 kN 5.2 kN 25.0 kg
CH-G D302 37.09 PAM71 37.09:1 IEC 71 · 14 mm shaft 0.55 kW 37.7 r/min 134 Nm 2.45 1.1 kN 5.1 kN 5.1 kN 20.0 kg
CH-G D302 37.09 PAM80 37.09:1 IEC 80 · 19 mm shaft 1.1 kW 37.7 r/min 269 Nm 1.23 1.1 kN 5.1 kN 5.1 kN 21.0 kg
CH-G D302 37.09 PAM90 37.09:1 IEC 90 · 24 mm shaft 1.1 kW 37.7 r/min 269 Nm 1.23 1.1 kN 5.1 kN 5.1 kN 21.0 kg
CH-G D302 33.07 PAM71 33.07:1 IEC 71 · 14 mm shaft 0.55 kW 42.3 r/min 120 Nm 2.51 1.1 kN 5 kN 5 kN 20.0 kg
CH-G D302 33.07 PAM80 33.07:1 IEC 80 · 19 mm shaft 1.1 kW 42.3 r/min 239 Nm 1.25 1.1 kN 5 kN 5 kN 21.0 kg
CH-G D302 33.07 PAM90 33.07:1 IEC 90 · 24 mm shaft 1.1 kW 42.3 r/min 239 Nm 1.25 1.1 kN 5 kN 5 kN 21.0 kg
CH-G D302 33.07 PAM100 33.07:1 IEC 100 · 28 mm shaft 2.2 kW 42.3 r/min 478 Nm 0.63 1.1 kN 5 kN 5 kN 25.0 kg
CH-G D302 33.07 PAM112 33.07:1 IEC 112 · 28 mm shaft 4 kW 42.3 r/min 870 Nm 0.35 1.1 kN 5 kN 5 kN 25.0 kg
CH-G D302 30.46 PAM71 30.46:1 IEC 71 · 14 mm shaft 0.55 kW 46 r/min 110 Nm 2.64 1.1 kN 4.9 kN 4.9 kN 20.0 kg
CH-G D302 30.46 PAM80 30.46:1 IEC 80 · 19 mm shaft 1.1 kW 46 r/min 220 Nm 1.32 1.1 kN 4.9 kN 4.9 kN 21.0 kg
CH-G D302 30.46 PAM90 30.46:1 IEC 90 · 24 mm shaft 1.1 kW 46 r/min 220 Nm 1.32 1.1 kN 4.9 kN 4.9 kN 21.0 kg
CH-G D302 28.26 PAM71 28.26:1 IEC 71 · 14 mm shaft 0.55 kW 49.5 r/min 102 Nm 2.85 1 kN 4.7 kN 4.7 kN 20.0 kg
CH-G D302 28.26 PAM80 28.26:1 IEC 80 · 19 mm shaft 1.1 kW 49.5 r/min 203 Nm 1.43 1 kN 4.7 kN 4.7 kN 21.0 kg
CH-G D302 28.26 PAM90 28.26:1 IEC 90 · 24 mm shaft 1.5 kW 49.5 r/min 277 Nm 1.05 1 kN 4.7 kN 4.7 kN 21.0 kg
CH-G D302 28.26 PAM100 28.26:1 IEC 100 · 28 mm shaft 2.2 kW 49.5 r/min 406 Nm 0.71 1 kN 4.7 kN 4.7 kN 25.0 kg
CH-G D302 28.26 PAM112 28.26:1 IEC 112 · 28 mm shaft 4 kW 49.5 r/min 739 Nm 0.39 1 kN 4.7 kN 4.7 kN 25.0 kg
CH-G D302 26.24 PAM71 26.24:1 IEC 71 · 14 mm shaft 0.55 kW 53.4 r/min 94 Nm 3.07 1 kN 4.6 kN 4.6 kN 20.0 kg
CH-G D302 26.24 PAM80 26.24:1 IEC 80 · 19 mm shaft 1.1 kW 53.4 r/min 189 Nm 1.54 1 kN 4.6 kN 4.6 kN 21.0 kg
CH-G D302 26.24 PAM90 26.24:1 IEC 90 · 24 mm shaft 1.5 kW 53.4 r/min 257 Nm 1.13 1 kN 4.6 kN 4.6 kN 21.0 kg
CH-G D302 26.24 PAM100 26.24:1 IEC 100 · 28 mm shaft 2.2 kW 53.4 r/min 378 Nm 0.77 1 kN 4.6 kN 4.6 kN 25.0 kg
CH-G D302 26.24 PAM112 26.24:1 IEC 112 · 28 mm shaft 4 kW 53.4 r/min 686 Nm 0.42 1 kN 4.6 kN 4.6 kN 25.0 kg
CH-G D302 24.47 PAM71 24.47:1 IEC 71 · 14 mm shaft 0.55 kW 57.2 r/min 88 Nm 2.95 1 kN 4.6 kN 4.6 kN 20.0 kg
CH-G D302 24.47 PAM80 24.47:1 IEC 80 · 19 mm shaft 1.1 kW 57.2 r/min 177 Nm 1.47 1 kN 4.6 kN 4.6 kN 21.0 kg
CH-G D302 24.47 PAM90 24.47:1 IEC 90 · 24 mm shaft 1.5 kW 57.2 r/min 241 Nm 1.08 1 kN 4.6 kN 4.6 kN 21.0 kg
CH-G D302 24.47 PAM100 24.47:1 IEC 100 · 28 mm shaft 2.2 kW 57.2 r/min 353 Nm 0.74 1 kN 4.6 kN 4.6 kN 25.0 kg
CH-G D302 24.47 PAM112 24.47:1 IEC 112 · 28 mm shaft 4 kW 57.2 r/min 642 Nm 0.41 1 kN 4.6 kN 4.6 kN 25.0 kg
CH-G D302 21.4 PAM71 21.4:1 IEC 71 · 14 mm shaft 0.55 kW 65.4 r/min 77 Nm 3.36 1 kN 4.3 kN 4.3 kN 20.0 kg
CH-G D302 21.4 PAM80 21.4:1 IEC 80 · 19 mm shaft 1.1 kW 65.4 r/min 155 Nm 1.68 1 kN 4.3 kN 4.3 kN 21.0 kg
CH-G D302 21.4 PAM90 21.4:1 IEC 90 · 24 mm shaft 1.5 kW 65.4 r/min 211 Nm 1.23 1 kN 4.3 kN 4.3 kN 21.0 kg
CH-G D302 21.4 PAM100 21.4:1 IEC 100 · 28 mm shaft 2.2 kW 65.4 r/min 309 Nm 0.84 1 kN 4.3 kN 4.3 kN 25.0 kg
CH-G D302 21.4 PAM112 21.4:1 IEC 112 · 28 mm shaft 4 kW 65.4 r/min 562 Nm 0.46 1 kN 4.3 kN 4.3 kN 25.0 kg
CH-G D302 18.95 PAM71 18.95:1 IEC 71 · 14 mm shaft 0.55 kW 73.9 r/min 68 Nm 3.51 1 kN 4.2 kN 4.2 kN 20.0 kg
CH-G D302 18.95 PAM80 18.95:1 IEC 80 · 19 mm shaft 1.1 kW 73.9 r/min 137 Nm 1.75 1 kN 4.2 kN 4.2 kN 21.0 kg
CH-G D302 18.95 PAM90 18.95:1 IEC 90 · 24 mm shaft 1.5 kW 73.9 r/min 187 Nm 1.29 1 kN 4.2 kN 4.2 kN 21.0 kg
CH-G D302 18.95 PAM100 18.95:1 IEC 100 · 28 mm shaft 2.2 kW 73.9 r/min 274 Nm 0.88 1 kN 4.2 kN 4.2 kN 25.0 kg
CH-G D302 18.95 PAM112 18.95:1 IEC 112 · 28 mm shaft 4 kW 73.9 r/min 497 Nm 0.48 1 kN 4.2 kN 4.2 kN 25.0 kg
CH-G D302 16.57 PAM71 16.57:1 IEC 71 · 14 mm shaft 0.55 kW 84.5 r/min 60 Nm 4.02 0.9 kN 4 kN 4 kN 20.0 kg
CH-G D302 16.57 PAM80 16.57:1 IEC 80 · 19 mm shaft 1.1 kW 84.5 r/min 119 Nm 2.01 0.9 kN 4 kN 4 kN 21.0 kg
CH-G D302 16.57 PAM90 16.57:1 IEC 90 · 24 mm shaft 2.2 kW 84.5 r/min 239 Nm 1 0.9 kN 4 kN 4 kN 21.0 kg
CH-G D302 16.57 PAM100 16.57:1 IEC 100 · 28 mm shaft 2.2 kW 84.5 r/min 239 Nm 1 0.9 kN 4 kN 4 kN 25.0 kg
CH-G D302 16.57 PAM112 16.57:1 IEC 112 · 28 mm shaft 4 kW 84.5 r/min 434 Nm 0.55 0.9 kN 4 kN 4 kN 25.0 kg
CH-G D302 15.55 PAM71 15.55:1 IEC 71 · 14 mm shaft 0.55 kW 90.1 r/min 56 Nm 4.27 0.9 kN 3.9 kN 3.9 kN 20.0 kg
CH-G D302 15.55 PAM80 15.55:1 IEC 80 · 19 mm shaft 1.1 kW 90.1 r/min 112 Nm 2.14 0.9 kN 3.9 kN 3.9 kN 21.0 kg
CH-G D302 15.55 PAM90 15.55:1 IEC 90 · 24 mm shaft 2.2 kW 90.1 r/min 225 Nm 1.07 0.9 kN 3.9 kN 3.9 kN 21.0 kg
CH-G D302 15.55 PAM100 15.55:1 IEC 100 · 28 mm shaft 2.2 kW 90.1 r/min 225 Nm 1.07 0.9 kN 3.9 kN 3.9 kN 25.0 kg
CH-G D302 15.55 PAM112 15.55:1 IEC 112 · 28 mm shaft 4 kW 90.1 r/min 409 Nm 0.59 0.9 kN 3.9 kN 3.9 kN 25.0 kg
CH-G D302 13.95 PAM71 13.95:1 IEC 71 · 14 mm shaft 0.55 kW 100.3 r/min 50 Nm 4.18 0.9 kN 3.9 kN 3.9 kN 20.0 kg
CH-G D302 13.95 PAM80 13.95:1 IEC 80 · 19 mm shaft 1.1 kW 100.3 r/min 100 Nm 2.09 0.9 kN 3.9 kN 3.9 kN 21.0 kg
CH-G D302 13.95 PAM90 13.95:1 IEC 90 · 24 mm shaft 2.2 kW 100.3 r/min 201 Nm 1.05 0.9 kN 3.9 kN 3.9 kN 21.0 kg
CH-G D302 13.95 PAM100 13.95:1 IEC 100 · 28 mm shaft 2.2 kW 100.3 r/min 201 Nm 1.05 0.9 kN 3.9 kN 3.9 kN 25.0 kg
CH-G D302 13.95 PAM112 13.95:1 IEC 112 · 28 mm shaft 4 kW 100.3 r/min 365 Nm 0.57 0.9 kN 3.9 kN 3.9 kN 25.0 kg
CH-G D302 11.38 PAM71 11.38:1 IEC 71 · 14 mm shaft 0.55 kW 123 r/min 41 Nm 4.64 0.8 kN 3.6 kN 3.6 kN 20.0 kg
CH-G D302 11.38 PAM80 11.38:1 IEC 80 · 19 mm shaft 1.1 kW 123 r/min 82 Nm 2.32 0.8 kN 3.6 kN 3.6 kN 21.0 kg
CH-G D302 11.38 PAM90 11.38:1 IEC 90 · 24 mm shaft 2.2 kW 123 r/min 164 Nm 1.16 0.8 kN 3.6 kN 3.6 kN 21.0 kg
CH-G D302 11.38 PAM100 11.38:1 IEC 100 · 28 mm shaft 2.2 kW 123 r/min 164 Nm 1.16 0.8 kN 3.6 kN 3.6 kN 25.0 kg
CH-G D302 11.38 PAM112 11.38:1 IEC 112 · 28 mm shaft 4 kW 123 r/min 298 Nm 0.64 0.8 kN 3.6 kN 3.6 kN 25.0 kg
CH-G D302 8.81 PAM71 8.81:1 IEC 71 · 14 mm shaft 0.55 kW 158.9 r/min 32 Nm 5.36 0.7 kN 3.4 kN 3.4 kN 20.0 kg
CH-G D302 8.81 PAM80 8.81:1 IEC 80 · 19 mm shaft 1.1 kW 158.9 r/min 63 Nm 2.68 0.7 kN 3.4 kN 3.4 kN 21.0 kg
CH-G D302 8.81 PAM90 8.81:1 IEC 90 · 24 mm shaft 2.2 kW 158.9 r/min 127 Nm 1.34 0.7 kN 3.4 kN 3.4 kN 21.0 kg
CH-G D302 8.81 PAM100 8.81:1 IEC 100 · 28 mm shaft 2.2 kW 158.9 r/min 127 Nm 1.34 0.7 kN 3.4 kN 3.4 kN 25.0 kg
CH-G D302 8.81 PAM112 8.81:1 IEC 112 · 28 mm shaft 4 kW 158.9 r/min 231 Nm 0.74 0.7 kN 3.4 kN 3.4 kN 25.0 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 (the catalogue's M2max); 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.

Radial loads

FR1 is the permissible radial load on the input shaft and FR2 on the output shaft (kN, applied at the shaft centre). Chain sprockets, belt pulleys and gears on the shaft all load it radially — check the figure against your drive, and ask us if your load is close to it. The catalogue also limits peak loads to 200 % of the nominal torque.

Need help specifying this product?

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