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Chiaravalli CH-G A 703 helical gear unit (chiaravalli.com product image)
Chiaravalli

CH-G A 703 Helical Gear Unit (Ø70 mm output shaft)

Cast Iron Gearboxes CH-G

CH-G A 703 helical in-line gear unit — Chiaravalli's cast iron series: three-stage, size 70, ratios 45.67:1 to 260.15:1. 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 Ø70 m6. 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 100, 112, 132, 160, 180, 200 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 260.15:1 gives 5 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, 2.82 to 16.05 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 A703 260.15 PAM100 260.15:1 IEC 100 · 28 mm shaft 2.2 kW 5.4 r/min 3901 Nm 1.28 3.9 kN 30 kN 114.0 kg
CH-G A703 260.15 PAM112 260.15:1 IEC 112 · 28 mm shaft 4 kW 5.4 r/min 7092 Nm 0.71 3.9 kN 30 kN 114.0 kg
CH-G A703 260.15 PAM132 260.15:1 IEC 132 · 38 mm shaft 5.5 kW 5.4 r/min 9752 Nm 0.51 3.9 kN 30 kN 117.0 kg
CH-G A703 231.34 PAM100 231.34:1 IEC 100 · 28 mm shaft 3 kW 6.1 r/min 4732 Nm 1.06 3.9 kN 30 kN 114.0 kg
CH-G A703 231.34 PAM112 231.34:1 IEC 112 · 28 mm shaft 4 kW 6.1 r/min 6309 Nm 0.79 3.9 kN 30 kN 114.0 kg
CH-G A703 231.34 PAM132 231.34:1 IEC 132 · 38 mm shaft 5.5 kW 6.1 r/min 8675 Nm 0.58 3.9 kN 30 kN 117.0 kg
CH-G A703 231.34 PAM160 231.34:1 IEC 160 · 42 mm shaft 11 kW 6.1 r/min 17350 Nm 0.29 3.9 kN 30 kN 123.0 kg
CH-G A703 231.34 PAM180 231.34:1 IEC 180 · 48 mm shaft 18.5 kW 6.1 r/min 29180 Nm 0.17 3.9 kN 30 kN 123.0 kg
CH-G A703 207.78 PAM100 207.78:1 IEC 100 · 28 mm shaft 3 kW 6.7 r/min 4249 Nm 1.18 3.9 kN 30 kN 114.0 kg
CH-G A703 207.78 PAM112 207.78:1 IEC 112 · 28 mm shaft 4 kW 6.7 r/min 5666 Nm 0.88 3.9 kN 30 kN 114.0 kg
CH-G A703 207.78 PAM132 207.78:1 IEC 132 · 38 mm shaft 5.5 kW 6.7 r/min 7790 Nm 0.64 3.9 kN 30 kN 117.0 kg
CH-G A703 207.78 PAM160 207.78:1 IEC 160 · 42 mm shaft 11 kW 6.7 r/min 15581 Nm 0.32 3.9 kN 30 kN 123.0 kg
CH-G A703 207.78 PAM180 207.78:1 IEC 180 · 48 mm shaft 18.5 kW 6.7 r/min 26204 Nm 0.19 3.9 kN 30 kN 123.0 kg
CH-G A703 189.54 PAM100 189.54:1 IEC 100 · 28 mm shaft 3 kW 7.4 r/min 3876 Nm 1.29 3.9 kN 30 kN 114.0 kg
CH-G A703 189.54 PAM112 189.54:1 IEC 112 · 28 mm shaft 4 kW 7.4 r/min 5168 Nm 0.97 3.9 kN 30 kN 114.0 kg
CH-G A703 189.54 PAM132 189.54:1 IEC 132 · 38 mm shaft 5.5 kW 7.4 r/min 7106 Nm 0.7 3.9 kN 30 kN 117.0 kg
CH-G A703 189.54 PAM160 189.54:1 IEC 160 · 42 mm shaft 11 kW 7.4 r/min 14212 Nm 0.35 3.9 kN 30 kN 123.0 kg
CH-G A703 189.54 PAM180 189.54:1 IEC 180 · 48 mm shaft 18.5 kW 7.4 r/min 23902 Nm 0.21 3.9 kN 30 kN 123.0 kg
CH-G A703 173.11 PAM100 173.11:1 IEC 100 · 28 mm shaft 3 kW 8.1 r/min 3546 Nm 1.41 3.9 kN 30 kN 114.0 kg
CH-G A703 173.11 PAM112 173.11:1 IEC 112 · 28 mm shaft 4 kW 8.1 r/min 4728 Nm 1.06 3.9 kN 30 kN 114.0 kg
CH-G A703 173.11 PAM132 173.11:1 IEC 132 · 38 mm shaft 5.5 kW 8.1 r/min 6501 Nm 0.77 3.9 kN 30 kN 117.0 kg
CH-G A703 173.11 PAM160 173.11:1 IEC 160 · 42 mm shaft 11 kW 8.1 r/min 13002 Nm 0.38 3.9 kN 30 kN 123.0 kg
CH-G A703 173.11 PAM180 173.11:1 IEC 180 · 48 mm shaft 18.5 kW 8.1 r/min 21868 Nm 0.23 3.9 kN 30 kN 123.0 kg
CH-G A703 155.48 PAM100 155.48:1 IEC 100 · 28 mm shaft 3 kW 9 r/min 3185 Nm 1.57 3.8 kN 30 kN 114.0 kg
CH-G A703 155.48 PAM112 155.48:1 IEC 112 · 28 mm shaft 4 kW 9 r/min 4246 Nm 1.18 3.8 kN 30 kN 114.0 kg
CH-G A703 155.48 PAM132 155.48:1 IEC 132 · 38 mm shaft 5.5 kW 9 r/min 5839 Nm 0.86 3.8 kN 30 kN 117.0 kg
CH-G A703 155.48 PAM160 155.48:1 IEC 160 · 42 mm shaft 11 kW 9 r/min 11677 Nm 0.43 3.8 kN 30 kN 123.0 kg
CH-G A703 155.48 PAM180 155.48:1 IEC 180 · 48 mm shaft 18.5 kW 9 r/min 19639 Nm 0.25 3.8 kN 30 kN 123.0 kg
CH-G A703 144.94 PAM100 144.94:1 IEC 100 · 28 mm shaft 3 kW 9.7 r/min 2964 Nm 1.69 3.8 kN 30 kN 114.0 kg
CH-G A703 144.94 PAM112 144.94:1 IEC 112 · 28 mm shaft 4 kW 9.7 r/min 3953 Nm 1.26 3.8 kN 30 kN 114.0 kg
CH-G A703 144.94 PAM132 144.94:1 IEC 132 · 38 mm shaft 5.5 kW 9.7 r/min 5435 Nm 0.92 3.8 kN 30 kN 117.0 kg
CH-G A703 144.94 PAM160 144.94:1 IEC 160 · 42 mm shaft 11 kW 9.7 r/min 10870 Nm 0.46 3.8 kN 30 kN 123.0 kg
CH-G A703 144.94 PAM180 144.94:1 IEC 180 · 48 mm shaft 18.5 kW 9.7 r/min 18281 Nm 0.27 3.8 kN 30 kN 123.0 kg
CH-G A703 144.94 PAM200 144.94:1 IEC 200 · 55 mm shaft 30 kW 9.7 r/min 29644 Nm 0.17 3.8 kN 30 kN 139.0 kg
CH-G A703 128.35 PAM100 128.35:1 IEC 100 · 28 mm shaft 3 kW 10.9 r/min 2627 Nm 1.9 3.8 kN 30 kN 114.0 kg
CH-G A703 128.35 PAM112 128.35:1 IEC 112 · 28 mm shaft 5.5 kW 10.9 r/min 4816 Nm 1.04 3.8 kN 30 kN 114.0 kg
CH-G A703 128.35 PAM132 128.35:1 IEC 132 · 38 mm shaft 5.5 kW 10.9 r/min 4816 Nm 1.04 3.8 kN 30 kN 117.0 kg
CH-G A703 128.35 PAM160 128.35:1 IEC 160 · 42 mm shaft 11 kW 10.9 r/min 9632 Nm 0.52 3.8 kN 30 kN 123.0 kg
CH-G A703 128.35 PAM180 128.35:1 IEC 180 · 48 mm shaft 18.5 kW 10.9 r/min 16200 Nm 0.31 3.8 kN 30 kN 123.0 kg
CH-G A703 118.75 PAM100 118.75:1 IEC 100 · 28 mm shaft 3 kW 11.8 r/min 2431 Nm 2.06 3.8 kN 30 kN 114.0 kg
CH-G A703 118.75 PAM112 118.75:1 IEC 112 · 28 mm shaft 5.5 kW 11.8 r/min 4457 Nm 1.12 3.8 kN 30 kN 114.0 kg
CH-G A703 118.75 PAM132 118.75:1 IEC 132 · 38 mm shaft 5.5 kW 11.8 r/min 4457 Nm 1.12 3.8 kN 30 kN 117.0 kg
CH-G A703 118.75 PAM160 118.75:1 IEC 160 · 42 mm shaft 11 kW 11.8 r/min 8914 Nm 0.56 3.8 kN 30 kN 123.0 kg
CH-G A703 118.75 PAM180 118.75:1 IEC 180 · 48 mm shaft 18.5 kW 11.8 r/min 14992 Nm 0.33 3.8 kN 30 kN 123.0 kg
CH-G A703 118.75 PAM200 118.75:1 IEC 200 · 55 mm shaft 30 kW 11.8 r/min 24311 Nm 0.21 3.8 kN 30 kN 139.0 kg
CH-G A703 108.46 PAM100 108.46:1 IEC 100 · 28 mm shaft 3 kW 12.9 r/min 2219 Nm 2.25 3.8 kN 30 kN 114.0 kg
CH-G A703 108.46 PAM112 108.46:1 IEC 112 · 28 mm shaft 5.5 kW 12.9 r/min 4068 Nm 1.23 3.8 kN 30 kN 114.0 kg
CH-G A703 108.46 PAM132 108.46:1 IEC 132 · 38 mm shaft 5.5 kW 12.9 r/min 4068 Nm 1.23 3.8 kN 30 kN 117.0 kg
CH-G A703 108.46 PAM160 108.46:1 IEC 160 · 42 mm shaft 11 kW 12.9 r/min 8136 Nm 0.61 3.8 kN 30 kN 123.0 kg
CH-G A703 108.46 PAM180 108.46:1 IEC 180 · 48 mm shaft 18.5 kW 12.9 r/min 13683 Nm 0.37 3.8 kN 30 kN 123.0 kg
CH-G A703 108.46 PAM200 108.46:1 IEC 200 · 55 mm shaft 30 kW 12.9 r/min 22189 Nm 0.23 3.8 kN 30 kN 139.0 kg
CH-G A703 100.38 PAM100 100.38:1 IEC 100 · 28 mm shaft 3 kW 13.9 r/min 2055 Nm 2.43 3.7 kN 30 kN 114.0 kg
CH-G A703 100.38 PAM112 100.38:1 IEC 112 · 28 mm shaft 5.5 kW 13.9 r/min 3767 Nm 1.33 3.7 kN 30 kN 114.0 kg
CH-G A703 100.38 PAM132 100.38:1 IEC 132 · 38 mm shaft 5.5 kW 13.9 r/min 3767 Nm 1.33 3.7 kN 30 kN 117.0 kg
CH-G A703 100.38 PAM160 100.38:1 IEC 160 · 42 mm shaft 11 kW 13.9 r/min 7534 Nm 0.66 3.7 kN 30 kN 123.0 kg
CH-G A703 100.38 PAM180 100.38:1 IEC 180 · 48 mm shaft 18.5 kW 13.9 r/min 12671 Nm 0.39 3.7 kN 30 kN 123.0 kg
CH-G A703 100.38 PAM200 100.38:1 IEC 200 · 55 mm shaft 30 kW 13.9 r/min 20548 Nm 0.24 3.7 kN 30 kN 139.0 kg
CH-G A703 89.95 PAM100 89.95:1 IEC 100 · 28 mm shaft 3 kW 15.6 r/min 1840 Nm 2.72 3.7 kN 30 kN 114.0 kg
CH-G A703 89.95 PAM112 89.95:1 IEC 112 · 28 mm shaft 5.5 kW 15.6 r/min 3374 Nm 1.48 3.7 kN 30 kN 114.0 kg
CH-G A703 89.95 PAM132 89.95:1 IEC 132 · 38 mm shaft 7.5 kW 15.6 r/min 4601 Nm 1.09 3.7 kN 30 kN 117.0 kg
CH-G A703 89.95 PAM160 89.95:1 IEC 160 · 42 mm shaft 11 kW 15.6 r/min 6748 Nm 0.74 3.7 kN 30 kN 123.0 kg
CH-G A703 89.95 PAM180 89.95:1 IEC 180 · 48 mm shaft 18.5 kW 15.6 r/min 11350 Nm 0.44 3.7 kN 30 kN 123.0 kg
CH-G A703 89.95 PAM200 89.95:1 IEC 200 · 55 mm shaft 30 kW 15.6 r/min 18405 Nm 0.27 3.7 kN 30 kN 139.0 kg
CH-G A703 83.35 PAM100 83.35:1 IEC 100 · 28 mm shaft 3 kW 16.8 r/min 1706 Nm 2.93 3.7 kN 30 kN 114.0 kg
CH-G A703 83.35 PAM112 83.35:1 IEC 112 · 28 mm shaft 5.5 kW 16.8 r/min 3129 Nm 1.6 3.7 kN 30 kN 114.0 kg
CH-G A703 83.35 PAM132 83.35:1 IEC 132 · 38 mm shaft 7.5 kW 16.8 r/min 4266 Nm 1.17 3.7 kN 30 kN 117.0 kg
CH-G A703 83.35 PAM160 83.35:1 IEC 160 · 42 mm shaft 11 kW 16.8 r/min 6257 Nm 0.8 3.7 kN 30 kN 123.0 kg
CH-G A703 83.35 PAM180 83.35:1 IEC 180 · 48 mm shaft 18.5 kW 16.8 r/min 10523 Nm 0.48 3.7 kN 30 kN 123.0 kg
CH-G A703 83.35 PAM200 83.35:1 IEC 200 · 55 mm shaft 30 kW 16.8 r/min 17065 Nm 0.29 3.7 kN 30 kN 139.0 kg
CH-G A703 73.7 PAM100 73.7:1 IEC 100 · 28 mm shaft 3 kW 19 r/min 1508 Nm 3.32 3.6 kN 30 kN 114.0 kg
CH-G A703 73.7 PAM112 73.7:1 IEC 112 · 28 mm shaft 5.5 kW 19 r/min 2764 Nm 1.81 3.6 kN 30 kN 114.0 kg
CH-G A703 73.7 PAM132 73.7:1 IEC 132 · 38 mm shaft 7.5 kW 19 r/min 3769 Nm 1.33 3.6 kN 30 kN 117.0 kg
CH-G A703 73.7 PAM160 73.7:1 IEC 160 · 42 mm shaft 11 kW 19 r/min 5528 Nm 0.9 3.6 kN 30 kN 123.0 kg
CH-G A703 73.7 PAM180 73.7:1 IEC 180 · 48 mm shaft 18.5 kW 19 r/min 9296 Nm 0.54 3.6 kN 30 kN 123.0 kg
CH-G A703 73.7 PAM200 73.7:1 IEC 200 · 55 mm shaft 30 kW 19 r/min 15075 Nm 0.33 3.6 kN 30 kN 139.0 kg
CH-G A703 67.31 PAM100 67.31:1 IEC 100 · 28 mm shaft 3 kW 20.8 r/min 1377 Nm 3.63 3.6 kN 30 kN 114.0 kg
CH-G A703 67.31 PAM112 67.31:1 IEC 112 · 28 mm shaft 5.5 kW 20.8 r/min 2525 Nm 1.98 3.6 kN 30 kN 114.0 kg
CH-G A703 67.31 PAM132 67.31:1 IEC 132 · 38 mm shaft 7.5 kW 20.8 r/min 3444 Nm 1.45 3.6 kN 30 kN 117.0 kg
CH-G A703 67.31 PAM160 67.31:1 IEC 160 · 42 mm shaft 11 kW 20.8 r/min 5051 Nm 0.99 3.6 kN 30 kN 123.0 kg
CH-G A703 67.31 PAM180 67.31:1 IEC 180 · 48 mm shaft 18.5 kW 20.8 r/min 8494 Nm 0.59 3.6 kN 30 kN 123.0 kg
CH-G A703 67.31 PAM200 67.31:1 IEC 200 · 55 mm shaft 30 kW 20.8 r/min 13774 Nm 0.36 3.6 kN 30 kN 139.0 kg
CH-G A703 55.75 PAM132 55.75:1 IEC 132 · 38 mm shaft 7.5 kW 25.1 r/min 2852 Nm 1.75 3.5 kN 30 kN 117.0 kg
CH-G A703 55.75 PAM160 55.75:1 IEC 160 · 42 mm shaft 11 kW 25.1 r/min 4183 Nm 1.2 3.5 kN 30 kN 123.0 kg
CH-G A703 55.75 PAM180 55.75:1 IEC 180 · 48 mm shaft 18.5 kW 25.1 r/min 7034 Nm 0.71 3.5 kN 30 kN 123.0 kg
CH-G A703 55.75 PAM200 55.75:1 IEC 200 · 55 mm shaft 30 kW 25.1 r/min 11407 Nm 0.44 3.5 kN 30 kN 139.0 kg
CH-G A703 45.67 PAM132 45.67:1 IEC 132 · 38 mm shaft 7.5 kW 30.7 r/min 2336 Nm 2.14 3.4 kN 30 kN 117.0 kg
CH-G A703 45.67 PAM160 45.67:1 IEC 160 · 42 mm shaft 15 kW 30.7 r/min 4673 Nm 1.07 3.4 kN 30 kN 123.0 kg
CH-G A703 45.67 PAM180 45.67:1 IEC 180 · 48 mm shaft 18.5 kW 30.7 r/min 5763 Nm 0.87 3.4 kN 30 kN 123.0 kg
CH-G A703 45.67 PAM200 45.67:1 IEC 200 · 55 mm shaft 30 kW 30.7 r/min 9346 Nm 0.54 3.4 kN 30 kN 139.0 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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