Skip to content
Menu
Chiaravalli CH-G A 402 helical gear unit (chiaravalli.com product image)
Chiaravalli

CH-G A 402 Helical Gear Unit (Ø40 mm output shaft)

Cast Iron Gearboxes CH-G

CH-G A 402 helical in-line gear unit — Chiaravalli's cast iron series: two-stage, size 40, ratios 5.25:1 to 45.38:1. This is the A … / PAM version — foot mounting with the PAM motor input — the version the catalogue lists as available from stock. Solid keyed output shaft Ø40 k6 (Ø35 k6 option). The flange-mounted F and foot-flange AF versions, the W input-shaft and IEC-coupling input versions and the FA–FD output flanges are made to order — ask us. PAM motor input for IEC 80, 90, 100, 112, 132 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 45.38:1 gives 31 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, 2.75 to 13.96 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 FR2 Weight
CH-G A402 45.38 PAM80 45.38:1 IEC 80 · 19 mm shaft 1.1 kW 30.9 r/min 340 Nm 2.5 2.4 kN 12 kN 35.0 kg
CH-G A402 45.38 PAM90 45.38:1 IEC 90 · 24 mm shaft 2.2 kW 30.9 r/min 680 Nm 1.25 2.4 kN 12 kN 35.0 kg
CH-G A402 45.38 PAM100 45.38:1 IEC 100 · 28 mm shaft 2.2 kW 30.9 r/min 680 Nm 1.25 2.4 kN 12 kN 37.0 kg
CH-G A402 45.38 PAM112 45.38:1 IEC 112 · 28 mm shaft 4 kW 30.9 r/min 1236 Nm 0.69 2.4 kN 12 kN 37.0 kg
CH-G A402 39.72 PAM80 39.72:1 IEC 80 · 19 mm shaft 1.1 kW 35.2 r/min 298 Nm 2.85 2.4 kN 12 kN 35.0 kg
CH-G A402 39.72 PAM90 39.72:1 IEC 90 · 24 mm shaft 2.2 kW 35.2 r/min 596 Nm 1.43 2.4 kN 12 kN 35.0 kg
CH-G A402 39.72 PAM100 39.72:1 IEC 100 · 28 mm shaft 3 kW 35.2 r/min 812 Nm 1.05 2.4 kN 12 kN 37.0 kg
CH-G A402 39.72 PAM112 39.72:1 IEC 112 · 28 mm shaft 4 kW 35.2 r/min 1083 Nm 0.79 2.4 kN 12 kN 37.0 kg
CH-G A402 36.44 PAM80 36.44:1 IEC 80 · 19 mm shaft 1.1 kW 38.4 r/min 273 Nm 2.93 2.4 kN 12 kN 35.0 kg
CH-G A402 36.44 PAM90 36.44:1 IEC 90 · 24 mm shaft 2.2 kW 38.4 r/min 547 Nm 1.46 2.4 kN 12 kN 35.0 kg
CH-G A402 36.44 PAM100 36.44:1 IEC 100 · 28 mm shaft 3 kW 38.4 r/min 745 Nm 1.07 2.4 kN 12 kN 37.0 kg
CH-G A402 36.44 PAM112 36.44:1 IEC 112 · 28 mm shaft 4 kW 38.4 r/min 994 Nm 0.81 2.4 kN 12 kN 37.0 kg
CH-G A402 31.5 PAM80 31.5:1 IEC 80 · 19 mm shaft 1.1 kW 44.4 r/min 236 Nm 3.6 2.3 kN 12 kN 35.0 kg
CH-G A402 31.5 PAM90 31.5:1 IEC 90 · 24 mm shaft 2.2 kW 44.4 r/min 472 Nm 1.8 2.3 kN 12 kN 35.0 kg
CH-G A402 31.5 PAM100 31.5:1 IEC 100 · 28 mm shaft 3 kW 44.4 r/min 644 Nm 1.32 2.3 kN 12 kN 37.0 kg
CH-G A402 31.5 PAM112 31.5:1 IEC 112 · 28 mm shaft 4 kW 44.4 r/min 859 Nm 0.99 2.3 kN 12 kN 37.0 kg
CH-G A402 31.5 PAM132 31.5:1 IEC 132 · 38 mm shaft 5.5 kW 44.4 r/min 1181 Nm 0.72 2.3 kN 12 kN 41.0 kg
CH-G A402 28.89 PAM80 28.89:1 IEC 80 · 19 mm shaft 1.1 kW 48.5 r/min 217 Nm 3.69 2.3 kN 12 kN 35.0 kg
CH-G A402 28.89 PAM90 28.89:1 IEC 90 · 24 mm shaft 2.2 kW 48.5 r/min 433 Nm 1.85 2.3 kN 12 kN 35.0 kg
CH-G A402 28.89 PAM100 28.89:1 IEC 100 · 28 mm shaft 3 kW 48.5 r/min 591 Nm 1.35 2.3 kN 12 kN 37.0 kg
CH-G A402 28.89 PAM112 28.89:1 IEC 112 · 28 mm shaft 4 kW 48.5 r/min 788 Nm 1.01 2.3 kN 12 kN 37.0 kg
CH-G A402 25.3 PAM80 25.3:1 IEC 80 · 19 mm shaft 1.1 kW 55.3 r/min 190 Nm 4.48 2.1 kN 12 kN 35.0 kg
CH-G A402 25.3 PAM90 25.3:1 IEC 90 · 24 mm shaft 2.2 kW 55.3 r/min 379 Nm 2.24 2.1 kN 12 kN 35.0 kg
CH-G A402 25.3 PAM100 25.3:1 IEC 100 · 28 mm shaft 3 kW 55.3 r/min 517 Nm 1.64 2.1 kN 12 kN 37.0 kg
CH-G A402 25.3 PAM112 25.3:1 IEC 112 · 28 mm shaft 4 kW 55.3 r/min 690 Nm 1.23 2.1 kN 12 kN 37.0 kg
CH-G A402 25.3 PAM132 25.3:1 IEC 132 · 38 mm shaft 5.5 kW 55.3 r/min 948 Nm 0.9 2.1 kN 12 kN 41.0 kg
CH-G A402 22.91 PAM80 22.91:1 IEC 80 · 19 mm shaft 1.1 kW 61.1 r/min 172 Nm 4.95 2.1 kN 12 kN 35.0 kg
CH-G A402 22.91 PAM90 22.91:1 IEC 90 · 24 mm shaft 2.2 kW 61.1 r/min 344 Nm 2.47 2.1 kN 12 kN 35.0 kg
CH-G A402 22.91 PAM100 22.91:1 IEC 100 · 28 mm shaft 3 kW 61.1 r/min 469 Nm 1.81 2.1 kN 12 kN 37.0 kg
CH-G A402 22.91 PAM112 22.91:1 IEC 112 · 28 mm shaft 4 kW 61.1 r/min 625 Nm 1.36 2.1 kN 12 kN 37.0 kg
CH-G A402 22.91 PAM132 22.91:1 IEC 132 · 38 mm shaft 5.5 kW 61.1 r/min 859 Nm 0.99 2.1 kN 12 kN 41.0 kg
CH-G A402 19.94 PAM80 19.94:1 IEC 80 · 19 mm shaft 1.1 kW 70.2 r/min 150 Nm 5.68 1.9 kN 11.7 kN 35.0 kg
CH-G A402 19.94 PAM90 19.94:1 IEC 90 · 24 mm shaft 2.2 kW 70.2 r/min 299 Nm 2.84 1.9 kN 11.7 kN 35.0 kg
CH-G A402 19.94 PAM100 19.94:1 IEC 100 · 28 mm shaft 3 kW 70.2 r/min 408 Nm 2.08 1.9 kN 11.7 kN 37.0 kg
CH-G A402 19.94 PAM112 19.94:1 IEC 112 · 28 mm shaft 5.5 kW 70.2 r/min 748 Nm 1.14 1.9 kN 11.7 kN 37.0 kg
CH-G A402 19.94 PAM132 19.94:1 IEC 132 · 38 mm shaft 5.5 kW 70.2 r/min 748 Nm 1.14 1.9 kN 11.7 kN 41.0 kg
CH-G A402 17.37 PAM80 17.37:1 IEC 80 · 19 mm shaft 1.1 kW 80.6 r/min 130 Nm 6.36 1.8 kN 11.1 kN 35.0 kg
CH-G A402 17.37 PAM90 17.37:1 IEC 90 · 24 mm shaft 2.2 kW 80.6 r/min 261 Nm 3.18 1.8 kN 11.1 kN 35.0 kg
CH-G A402 17.37 PAM100 17.37:1 IEC 100 · 28 mm shaft 3 kW 80.6 r/min 356 Nm 2.33 1.8 kN 11.1 kN 37.0 kg
CH-G A402 17.37 PAM112 17.37:1 IEC 112 · 28 mm shaft 5.5 kW 80.6 r/min 652 Nm 1.27 1.8 kN 11.1 kN 37.0 kg
CH-G A402 17.37 PAM132 17.37:1 IEC 132 · 38 mm shaft 5.5 kW 80.6 r/min 652 Nm 1.27 1.8 kN 11.1 kN 41.0 kg
CH-G A402 16.01 PAM80 16.01:1 IEC 80 · 19 mm shaft 1.1 kW 87.4 r/min 120 Nm 6.66 1.8 kN 10.8 kN 35.0 kg
CH-G A402 16.01 PAM90 16.01:1 IEC 90 · 24 mm shaft 2.2 kW 87.4 r/min 240 Nm 3.33 1.8 kN 10.8 kN 35.0 kg
CH-G A402 16.01 PAM100 16.01:1 IEC 100 · 28 mm shaft 3 kW 87.4 r/min 327 Nm 2.44 1.8 kN 10.8 kN 37.0 kg
CH-G A402 16.01 PAM112 16.01:1 IEC 112 · 28 mm shaft 5.5 kW 87.4 r/min 600 Nm 1.33 1.8 kN 10.8 kN 37.0 kg
CH-G A402 16.01 PAM132 16.01:1 IEC 132 · 38 mm shaft 5.5 kW 87.4 r/min 600 Nm 1.33 1.8 kN 10.8 kN 41.0 kg
CH-G A402 14.5 PAM80 14.5:1 IEC 80 · 19 mm shaft 1.1 kW 96.6 r/min 109 Nm 6.44 1.8 kN 10.9 kN 35.0 kg
CH-G A402 14.5 PAM90 14.5:1 IEC 90 · 24 mm shaft 2.2 kW 96.6 r/min 218 Nm 3.22 1.8 kN 10.9 kN 35.0 kg
CH-G A402 14.5 PAM100 14.5:1 IEC 100 · 28 mm shaft 3 kW 96.6 r/min 297 Nm 2.36 1.8 kN 10.9 kN 37.0 kg
CH-G A402 14.5 PAM112 14.5:1 IEC 112 · 28 mm shaft 5.5 kW 96.6 r/min 544 Nm 1.29 1.8 kN 10.9 kN 37.0 kg
CH-G A402 14.5 PAM132 14.5:1 IEC 132 · 38 mm shaft 5.5 kW 96.6 r/min 544 Nm 1.29 1.8 kN 10.9 kN 41.0 kg
CH-G A402 12.44 PAM80 12.44:1 IEC 80 · 19 mm shaft 1.1 kW 112.5 r/min 93 Nm 7.5 1.7 kN 10.2 kN 35.0 kg
CH-G A402 12.44 PAM90 12.44:1 IEC 90 · 24 mm shaft 2.2 kW 112.5 r/min 187 Nm 3.75 1.7 kN 10.2 kN 35.0 kg
CH-G A402 12.44 PAM100 12.44:1 IEC 100 · 28 mm shaft 3 kW 112.5 r/min 255 Nm 2.75 1.7 kN 10.2 kN 37.0 kg
CH-G A402 12.44 PAM112 12.44:1 IEC 112 · 28 mm shaft 5.5 kW 112.5 r/min 467 Nm 1.5 1.7 kN 10.2 kN 37.0 kg
CH-G A402 12.44 PAM132 12.44:1 IEC 132 · 38 mm shaft 7.5 kW 112.5 r/min 636 Nm 1.1 1.7 kN 10.2 kN 41.0 kg
CH-G A402 11.46 PAM80 11.46:1 IEC 80 · 19 mm shaft 1.1 kW 122.2 r/min 86 Nm 7.56 1.7 kN 10.1 kN 35.0 kg
CH-G A402 11.46 PAM90 11.46:1 IEC 90 · 24 mm shaft 2.2 kW 122.2 r/min 172 Nm 3.78 1.7 kN 10.1 kN 35.0 kg
CH-G A402 11.46 PAM100 11.46:1 IEC 100 · 28 mm shaft 3 kW 122.2 r/min 234 Nm 2.77 1.7 kN 10.1 kN 37.0 kg
CH-G A402 11.46 PAM112 11.46:1 IEC 112 · 28 mm shaft 5.5 kW 122.2 r/min 430 Nm 1.51 1.7 kN 10.1 kN 37.0 kg
CH-G A402 11.46 PAM132 11.46:1 IEC 132 · 38 mm shaft 7.5 kW 122.2 r/min 586 Nm 1.11 1.7 kN 10.1 kN 41.0 kg
CH-G A402 9.2 PAM80 9.2:1 IEC 80 · 19 mm shaft 1.1 kW 152.2 r/min 69 Nm 8.69 1.5 kN 9.4 kN 35.0 kg
CH-G A402 9.2 PAM90 9.2:1 IEC 90 · 24 mm shaft 2.2 kW 152.2 r/min 138 Nm 4.35 1.5 kN 9.4 kN 35.0 kg
CH-G A402 9.2 PAM100 9.2:1 IEC 100 · 28 mm shaft 3 kW 152.2 r/min 188 Nm 3.19 1.5 kN 9.4 kN 37.0 kg
CH-G A402 9.2 PAM112 9.2:1 IEC 112 · 28 mm shaft 5.5 kW 152.2 r/min 345 Nm 1.74 1.5 kN 9.4 kN 37.0 kg
CH-G A402 9.2 PAM132 9.2:1 IEC 132 · 38 mm shaft 7.5 kW 152.2 r/min 471 Nm 1.27 1.5 kN 9.4 kN 41.0 kg
CH-G A402 8.33 PAM80 8.33:1 IEC 80 · 19 mm shaft 1.1 kW 168 r/min 63 Nm 9.59 1.3 kN 9 kN 35.0 kg
CH-G A402 8.33 PAM90 8.33:1 IEC 90 · 24 mm shaft 2.2 kW 168 r/min 125 Nm 4.8 1.3 kN 9 kN 35.0 kg
CH-G A402 8.33 PAM100 8.33:1 IEC 100 · 28 mm shaft 3 kW 168 r/min 171 Nm 3.52 1.3 kN 9 kN 37.0 kg
CH-G A402 8.33 PAM112 8.33:1 IEC 112 · 28 mm shaft 5.5 kW 168 r/min 313 Nm 1.92 1.3 kN 9 kN 37.0 kg
CH-G A402 8.33 PAM132 8.33:1 IEC 132 · 38 mm shaft 7.5 kW 168 r/min 427 Nm 1.41 1.3 kN 9 kN 41.0 kg
CH-G A402 7.22 PAM80 7.22:1 IEC 80 · 19 mm shaft 1.1 kW 193.9 r/min 54 Nm 10.15 1.3 kN 8.7 kN 35.0 kg
CH-G A402 7.22 PAM90 7.22:1 IEC 90 · 24 mm shaft 2.2 kW 193.9 r/min 108 Nm 5.08 1.3 kN 8.7 kN 35.0 kg
CH-G A402 7.22 PAM100 7.22:1 IEC 100 · 28 mm shaft 3 kW 193.9 r/min 148 Nm 3.72 1.3 kN 8.7 kN 37.0 kg
CH-G A402 7.22 PAM112 7.22:1 IEC 112 · 28 mm shaft 5.5 kW 193.9 r/min 271 Nm 2.03 1.3 kN 8.7 kN 37.0 kg
CH-G A402 7.22 PAM132 7.22:1 IEC 132 · 38 mm shaft 7.5 kW 193.9 r/min 369 Nm 1.49 1.3 kN 8.7 kN 41.0 kg
CH-G A402 5.8 PAM80 5.8:1 IEC 80 · 19 mm shaft 1.1 kW 241.5 r/min 43 Nm 12.65 0.9 kN 7.9 kN 35.0 kg
CH-G A402 5.8 PAM90 5.8:1 IEC 90 · 24 mm shaft 2.2 kW 241.5 r/min 87 Nm 6.32 0.9 kN 7.9 kN 35.0 kg
CH-G A402 5.8 PAM100 5.8:1 IEC 100 · 28 mm shaft 3 kW 241.5 r/min 119 Nm 4.64 0.9 kN 7.9 kN 37.0 kg
CH-G A402 5.8 PAM112 5.8:1 IEC 112 · 28 mm shaft 5.5 kW 241.5 r/min 217 Nm 2.53 0.9 kN 7.9 kN 37.0 kg
CH-G A402 5.8 PAM132 5.8:1 IEC 132 · 38 mm shaft 7.5 kW 241.5 r/min 297 Nm 1.85 0.9 kN 7.9 kN 41.0 kg
CH-G A402 5.25 PAM80 5.25:1 IEC 80 · 19 mm shaft 1.1 kW 266.7 r/min 39 Nm 12.69 0.9 kN 7.8 kN 35.0 kg
CH-G A402 5.25 PAM90 5.25:1 IEC 90 · 24 mm shaft 2.2 kW 266.7 r/min 79 Nm 6.35 0.9 kN 7.8 kN 35.0 kg
CH-G A402 5.25 PAM100 5.25:1 IEC 100 · 28 mm shaft 3 kW 266.7 r/min 107 Nm 4.65 0.9 kN 7.8 kN 37.0 kg
CH-G A402 5.25 PAM112 5.25:1 IEC 112 · 28 mm shaft 5.5 kW 266.7 r/min 197 Nm 2.54 0.9 kN 7.8 kN 37.0 kg
CH-G A402 5.25 PAM132 5.25:1 IEC 132 · 38 mm shaft 7.5 kW 266.7 r/min 269 Nm 1.86 0.9 kN 7.8 kN 41.0 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?

Our technical team can help you specify the right component. Add it to your quote basket above, or contact us directly.

Contact Us