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Chiaravalli CH-G D 502 shaft mounted gear unit (chiaravalli.com product image)
Chiaravalli

CH-G D 502 Shaft Mounted Gear Unit (Ø50 mm hollow output shaft)

Cast Iron Gearboxes CH-G

CH-G D 502 parallel shaft mounted gear unit — Chiaravalli's cast iron series: two-stage, size 50, ratios 7.88:1 to 66.83:1. Hollow output shaft Ø50 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 80, 90, 100, 112, 132, 160 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 66.83:1 gives 21 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, 3.53 to 15.78 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 D502 66.83 PAM80 66.83:1 IEC 80 · 19 mm shaft 1.1 kW 21 r/min 499 Nm 3.21 2.5 kN 22 kN 8.8 kN 48.0 kg
CH-G D502 66.83 PAM90 66.83:1 IEC 90 · 24 mm shaft 2.2 kW 21 r/min 997 Nm 1.6 2.5 kN 22 kN 8.8 kN 48.0 kg
CH-G D502 66.83 PAM100 66.83:1 IEC 100 · 28 mm shaft 3 kW 21 r/min 1360 Nm 1.18 2.5 kN 22 kN 8.8 kN 50.0 kg
CH-G D502 66.83 PAM112 66.83:1 IEC 112 · 28 mm shaft 4 kW 21 r/min 1813 Nm 0.88 2.5 kN 22 kN 8.8 kN 50.0 kg
CH-G D502 58.5 PAM80 58.5:1 IEC 80 · 19 mm shaft 1.1 kW 23.9 r/min 437 Nm 3.66 2.4 kN 22 kN 8.4 kN 48.0 kg
CH-G D502 58.5 PAM90 58.5:1 IEC 90 · 24 mm shaft 2.2 kW 23.9 r/min 873 Nm 1.83 2.4 kN 22 kN 8.4 kN 48.0 kg
CH-G D502 58.5 PAM100 58.5:1 IEC 100 · 28 mm shaft 3 kW 23.9 r/min 1191 Nm 1.34 2.4 kN 22 kN 8.4 kN 50.0 kg
CH-G D502 58.5 PAM112 58.5:1 IEC 112 · 28 mm shaft 4 kW 23.9 r/min 1588 Nm 1.01 2.4 kN 22 kN 8.4 kN 50.0 kg
CH-G D502 54.31 PAM80 54.31:1 IEC 80 · 19 mm shaft 1.1 kW 25.8 r/min 405 Nm 3.21 2.5 kN 22 kN 8.4 kN 48.0 kg
CH-G D502 54.31 PAM90 54.31:1 IEC 90 · 24 mm shaft 2.2 kW 25.8 r/min 810 Nm 1.6 2.5 kN 22 kN 8.4 kN 48.0 kg
CH-G D502 54.31 PAM100 54.31:1 IEC 100 · 28 mm shaft 3 kW 25.8 r/min 1105 Nm 1.18 2.5 kN 22 kN 8.4 kN 50.0 kg
CH-G D502 54.31 PAM112 54.31:1 IEC 112 · 28 mm shaft 4 kW 25.8 r/min 1473 Nm 0.88 2.5 kN 22 kN 8.4 kN 50.0 kg
CH-G D502 46.39 PAM80 46.39:1 IEC 80 · 19 mm shaft 1.1 kW 30.2 r/min 346 Nm 4.62 2.2 kN 22 kN 7.7 kN 48.0 kg
CH-G D502 46.39 PAM90 46.39:1 IEC 90 · 24 mm shaft 2.2 kW 30.2 r/min 693 Nm 2.31 2.2 kN 22 kN 7.7 kN 48.0 kg
CH-G D502 46.39 PAM100 46.39:1 IEC 100 · 28 mm shaft 3 kW 30.2 r/min 945 Nm 1.69 2.2 kN 22 kN 7.7 kN 50.0 kg
CH-G D502 46.39 PAM112 46.39:1 IEC 112 · 28 mm shaft 4 kW 30.2 r/min 1260 Nm 1.27 2.2 kN 22 kN 7.7 kN 50.0 kg
CH-G D502 46.39 PAM132 46.39:1 IEC 132 · 38 mm shaft 5.5 kW 30.2 r/min 1732 Nm 0.92 2.2 kN 22 kN 7.7 kN 54.0 kg
CH-G D502 43.33 PAM80 43.33:1 IEC 80 · 19 mm shaft 1.1 kW 32.3 r/min 324 Nm 4.02 2.3 kN 22 kN 7.7 kN 48.0 kg
CH-G D502 43.33 PAM90 43.33:1 IEC 90 · 24 mm shaft 2.2 kW 32.3 r/min 647 Nm 2.01 2.3 kN 22 kN 7.7 kN 48.0 kg
CH-G D502 43.33 PAM100 43.33:1 IEC 100 · 28 mm shaft 3 kW 32.3 r/min 882 Nm 1.47 2.3 kN 22 kN 7.7 kN 50.0 kg
CH-G D502 43.33 PAM112 43.33:1 IEC 112 · 28 mm shaft 4 kW 32.3 r/min 1176 Nm 1.11 2.3 kN 22 kN 7.7 kN 50.0 kg
CH-G D502 37.7 PAM80 37.7:1 IEC 80 · 19 mm shaft 1.1 kW 37.1 r/min 282 Nm 5.33 2.1 kN 22 kN 7.2 kN 48.0 kg
CH-G D502 37.7 PAM90 37.7:1 IEC 90 · 24 mm shaft 2.2 kW 37.1 r/min 563 Nm 2.66 2.1 kN 22 kN 7.2 kN 48.0 kg
CH-G D502 37.7 PAM100 37.7:1 IEC 100 · 28 mm shaft 3 kW 37.1 r/min 768 Nm 1.95 2.1 kN 22 kN 7.2 kN 50.0 kg
CH-G D502 37.7 PAM112 37.7:1 IEC 112 · 28 mm shaft 5.5 kW 37.1 r/min 1408 Nm 1.07 2.1 kN 22 kN 7.2 kN 50.0 kg
CH-G D502 37.7 PAM132 37.7:1 IEC 132 · 38 mm shaft 5.5 kW 37.1 r/min 1408 Nm 1.07 2.1 kN 22 kN 7.2 kN 54.0 kg
CH-G D502 34.36 PAM80 34.36:1 IEC 80 · 19 mm shaft 1.1 kW 40.7 r/min 257 Nm 5.45 2.1 kN 22 kN 7 kN 48.0 kg
CH-G D502 34.36 PAM90 34.36:1 IEC 90 · 24 mm shaft 2.2 kW 40.7 r/min 513 Nm 2.73 2.1 kN 22 kN 7 kN 48.0 kg
CH-G D502 34.36 PAM100 34.36:1 IEC 100 · 28 mm shaft 3 kW 40.7 r/min 700 Nm 2 2.1 kN 22 kN 7 kN 50.0 kg
CH-G D502 34.36 PAM112 34.36:1 IEC 112 · 28 mm shaft 5.5 kW 40.7 r/min 1283 Nm 1.09 2.1 kN 22 kN 7 kN 50.0 kg
CH-G D502 34.36 PAM132 34.36:1 IEC 132 · 38 mm shaft 5.5 kW 40.7 r/min 1283 Nm 1.09 2.1 kN 22 kN 7 kN 54.0 kg
CH-G D502 31.86 PAM80 31.86:1 IEC 80 · 19 mm shaft 1.1 kW 43.9 r/min 238 Nm 6.3 2 kN 22 kN 6.7 kN 48.0 kg
CH-G D502 31.86 PAM90 31.86:1 IEC 90 · 24 mm shaft 2.2 kW 43.9 r/min 476 Nm 3.15 2 kN 22 kN 6.7 kN 48.0 kg
CH-G D502 31.86 PAM100 31.86:1 IEC 100 · 28 mm shaft 3 kW 43.9 r/min 649 Nm 2.31 2 kN 22 kN 6.7 kN 50.0 kg
CH-G D502 31.86 PAM112 31.86:1 IEC 112 · 28 mm shaft 5.5 kW 43.9 r/min 1190 Nm 1.26 2 kN 22 kN 6.7 kN 50.0 kg
CH-G D502 31.86 PAM132 31.86:1 IEC 132 · 38 mm shaft 5.5 kW 43.9 r/min 1190 Nm 1.26 2 kN 22 kN 6.7 kN 54.0 kg
CH-G D502 29.36 PAM80 29.36:1 IEC 80 · 19 mm shaft 1.1 kW 47.7 r/min 219 Nm 6.84 1.9 kN 22 kN 6.5 kN 48.0 kg
CH-G D502 29.36 PAM90 29.36:1 IEC 90 · 24 mm shaft 2.2 kW 47.7 r/min 439 Nm 3.42 1.9 kN 22 kN 6.5 kN 48.0 kg
CH-G D502 29.36 PAM100 29.36:1 IEC 100 · 28 mm shaft 3 kW 47.7 r/min 598 Nm 2.51 1.9 kN 22 kN 6.5 kN 50.0 kg
CH-G D502 29.36 PAM112 29.36:1 IEC 112 · 28 mm shaft 5.5 kW 47.7 r/min 1097 Nm 1.37 1.9 kN 22 kN 6.5 kN 50.0 kg
CH-G D502 29.36 PAM132 29.36:1 IEC 132 · 38 mm shaft 7.5 kW 47.7 r/min 1496 Nm 1 1.9 kN 22 kN 6.5 kN 54.0 kg
CH-G D502 25.89 PAM80 25.89:1 IEC 80 · 19 mm shaft 1.1 kW 54.1 r/min 193 Nm 7.75 1.7 kN 21.8 kN 6.2 kN 48.0 kg
CH-G D502 25.89 PAM90 25.89:1 IEC 90 · 24 mm shaft 2.2 kW 54.1 r/min 387 Nm 3.88 1.7 kN 21.8 kN 6.2 kN 48.0 kg
CH-G D502 25.89 PAM100 25.89:1 IEC 100 · 28 mm shaft 3 kW 54.1 r/min 528 Nm 2.84 1.7 kN 21.8 kN 6.2 kN 50.0 kg
CH-G D502 25.89 PAM112 25.89:1 IEC 112 · 28 mm shaft 5.5 kW 54.1 r/min 967 Nm 1.55 1.7 kN 21.8 kN 6.2 kN 50.0 kg
CH-G D502 25.89 PAM132 25.89:1 IEC 132 · 38 mm shaft 7.5 kW 54.1 r/min 1319 Nm 1.14 1.7 kN 21.8 kN 6.2 kN 54.0 kg
CH-G D502 23.86 PAM80 23.86:1 IEC 80 · 19 mm shaft 1.1 kW 58.7 r/min 178 Nm 8.41 1.6 kN 21.1 kN 6 kN 48.0 kg
CH-G D502 23.86 PAM90 23.86:1 IEC 90 · 24 mm shaft 2.2 kW 58.7 r/min 357 Nm 4.2 1.6 kN 21.1 kN 6 kN 48.0 kg
CH-G D502 23.86 PAM100 23.86:1 IEC 100 · 28 mm shaft 3 kW 58.7 r/min 486 Nm 3.08 1.6 kN 21.1 kN 6 kN 50.0 kg
CH-G D502 23.86 PAM112 23.86:1 IEC 112 · 28 mm shaft 5.5 kW 58.7 r/min 892 Nm 1.68 1.6 kN 21.1 kN 6 kN 50.0 kg
CH-G D502 23.86 PAM132 23.86:1 IEC 132 · 38 mm shaft 7.5 kW 58.7 r/min 1216 Nm 1.23 1.6 kN 21.1 kN 6 kN 54.0 kg
CH-G D502 21.75 PAM80 21.75:1 IEC 80 · 19 mm shaft 1.1 kW 64.4 r/min 163 Nm 8.61 1.6 kN 20.6 kN 5.9 kN 48.0 kg
CH-G D502 21.75 PAM90 21.75:1 IEC 90 · 24 mm shaft 2.2 kW 64.4 r/min 325 Nm 4.3 1.6 kN 20.6 kN 5.9 kN 48.0 kg
CH-G D502 21.75 PAM100 21.75:1 IEC 100 · 28 mm shaft 3 kW 64.4 r/min 444 Nm 3.16 1.6 kN 20.6 kN 5.9 kN 50.0 kg
CH-G D502 21.75 PAM112 21.75:1 IEC 112 · 28 mm shaft 5.5 kW 64.4 r/min 813 Nm 1.72 1.6 kN 20.6 kN 5.9 kN 50.0 kg
CH-G D502 21.75 PAM132 21.75:1 IEC 132 · 38 mm shaft 7.5 kW 64.4 r/min 1109 Nm 1.26 1.6 kN 20.6 kN 5.9 kN 54.0 kg
CH-G D502 18.67 PAM80 18.67:1 IEC 80 · 19 mm shaft 1.1 kW 75 r/min 140 Nm 10.03 1.4 kN 19.4 kN 5.5 kN 48.0 kg
CH-G D502 18.67 PAM90 18.67:1 IEC 90 · 24 mm shaft 2.2 kW 75 r/min 279 Nm 5.01 1.4 kN 19.4 kN 5.5 kN 48.0 kg
CH-G D502 18.67 PAM100 18.67:1 IEC 100 · 28 mm shaft 3 kW 75 r/min 381 Nm 3.68 1.4 kN 19.4 kN 5.5 kN 50.0 kg
CH-G D502 18.67 PAM112 18.67:1 IEC 112 · 28 mm shaft 5.5 kW 75 r/min 698 Nm 2.01 1.4 kN 19.4 kN 5.5 kN 50.0 kg
CH-G D502 18.67 PAM132 18.67:1 IEC 132 · 38 mm shaft 7.5 kW 75 r/min 952 Nm 1.47 1.4 kN 19.4 kN 5.5 kN 54.0 kg
CH-G D502 16.88 PAM80 16.88:1 IEC 80 · 19 mm shaft 1.1 kW 83 r/min 127 Nm 10.27 1.3 kN 18.9 kN 5.4 kN 48.0 kg
CH-G D502 16.88 PAM90 16.88:1 IEC 90 · 24 mm shaft 2.2 kW 83 r/min 253 Nm 5.14 1.3 kN 18.9 kN 5.4 kN 48.0 kg
CH-G D502 16.88 PAM100 16.88:1 IEC 100 · 28 mm shaft 3 kW 83 r/min 345 Nm 3.77 1.3 kN 18.9 kN 5.4 kN 50.0 kg
CH-G D502 16.88 PAM112 16.88:1 IEC 112 · 28 mm shaft 5.5 kW 83 r/min 633 Nm 2.05 1.3 kN 18.9 kN 5.4 kN 50.0 kg
CH-G D502 16.88 PAM132 16.88:1 IEC 132 · 38 mm shaft 7.5 kW 83 r/min 863 Nm 1.51 1.3 kN 18.9 kN 5.4 kN 54.0 kg
CH-G D502 16.88 PAM160 16.88:1 IEC 160 · 42 mm shaft 11 kW 83 r/min 1265 Nm 1.03 1.3 kN 18.9 kN 5.4 kN 61.0 kg
CH-G D502 13.72 PAM80 13.72:1 IEC 80 · 19 mm shaft 1.1 kW 102.1 r/min 103 Nm 11.67 1.1 kN 17.7 kN 5.1 kN 48.0 kg
CH-G D502 13.72 PAM90 13.72:1 IEC 90 · 24 mm shaft 2.2 kW 102.1 r/min 206 Nm 5.84 1.1 kN 17.7 kN 5.1 kN 48.0 kg
CH-G D502 13.72 PAM100 13.72:1 IEC 100 · 28 mm shaft 3 kW 102.1 r/min 280 Nm 4.28 1.1 kN 17.7 kN 5.1 kN 50.0 kg
CH-G D502 13.72 PAM112 13.72:1 IEC 112 · 28 mm shaft 5.5 kW 102.1 r/min 514 Nm 2.33 1.1 kN 17.7 kN 5.1 kN 50.0 kg
CH-G D502 13.72 PAM132 13.72:1 IEC 132 · 38 mm shaft 7.5 kW 102.1 r/min 701 Nm 1.71 1.1 kN 17.7 kN 5.1 kN 54.0 kg
CH-G D502 13.72 PAM160 13.72:1 IEC 160 · 42 mm shaft 11 kW 102.1 r/min 1028 Nm 1.17 1.1 kN 17.7 kN 5.1 kN 61.0 kg
CH-G D502 12.5 PAM80 12.5:1 IEC 80 · 19 mm shaft 1.1 kW 112 r/min 94 Nm 10.67 1.2 kN 17.6 kN 5 kN 48.0 kg
CH-G D502 12.5 PAM90 12.5:1 IEC 90 · 24 mm shaft 2.2 kW 112 r/min 187 Nm 5.34 1.2 kN 17.6 kN 5 kN 48.0 kg
CH-G D502 12.5 PAM100 12.5:1 IEC 100 · 28 mm shaft 3 kW 112 r/min 256 Nm 3.91 1.2 kN 17.6 kN 5 kN 50.0 kg
CH-G D502 12.5 PAM112 12.5:1 IEC 112 · 28 mm shaft 5.5 kW 112 r/min 468 Nm 2.13 1.2 kN 17.6 kN 5 kN 50.0 kg
CH-G D502 12.5 PAM132 12.5:1 IEC 132 · 38 mm shaft 7.5 kW 112 r/min 639 Nm 1.57 1.2 kN 17.6 kN 5 kN 54.0 kg
CH-G D502 12.5 PAM160 12.5:1 IEC 160 · 42 mm shaft 11 kW 112 r/min 937 Nm 1.07 1.2 kN 17.6 kN 5 kN 61.0 kg
CH-G D502 10.63 PAM80 10.63:1 IEC 80 · 19 mm shaft 1.1 kW 131.7 r/min 80 Nm 11.87 1.1 kN 16.7 kN 4.8 kN 48.0 kg
CH-G D502 10.63 PAM90 10.63:1 IEC 90 · 24 mm shaft 2.2 kW 131.7 r/min 160 Nm 5.94 1.1 kN 16.7 kN 4.8 kN 48.0 kg
CH-G D502 10.63 PAM100 10.63:1 IEC 100 · 28 mm shaft 3 kW 131.7 r/min 218 Nm 4.35 1.1 kN 16.7 kN 4.8 kN 50.0 kg
CH-G D502 10.63 PAM112 10.63:1 IEC 112 · 28 mm shaft 5.5 kW 131.7 r/min 400 Nm 2.37 1.1 kN 16.7 kN 4.8 kN 50.0 kg
CH-G D502 10.63 PAM132 10.63:1 IEC 132 · 38 mm shaft 7.5 kW 131.7 r/min 546 Nm 1.74 1.1 kN 16.7 kN 4.8 kN 54.0 kg
CH-G D502 10.63 PAM160 10.63:1 IEC 160 · 42 mm shaft 11 kW 131.7 r/min 800 Nm 1.19 1.1 kN 16.7 kN 4.8 kN 61.0 kg
CH-G D502 8.64 PAM80 8.64:1 IEC 80 · 19 mm shaft 1.1 kW 162 r/min 65 Nm 13.85 0.7 kN 15.6 kN 4.5 kN 48.0 kg
CH-G D502 8.64 PAM90 8.64:1 IEC 90 · 24 mm shaft 2.2 kW 162 r/min 130 Nm 6.92 0.7 kN 15.6 kN 4.5 kN 48.0 kg
CH-G D502 8.64 PAM100 8.64:1 IEC 100 · 28 mm shaft 3 kW 162 r/min 177 Nm 5.08 0.7 kN 15.6 kN 4.5 kN 50.0 kg
CH-G D502 8.64 PAM112 8.64:1 IEC 112 · 28 mm shaft 5.5 kW 162 r/min 325 Nm 2.77 0.7 kN 15.6 kN 4.5 kN 50.0 kg
CH-G D502 8.64 PAM132 8.64:1 IEC 132 · 38 mm shaft 7.5 kW 162 r/min 443 Nm 2.03 0.7 kN 15.6 kN 4.5 kN 54.0 kg
CH-G D502 8.64 PAM160 8.64:1 IEC 160 · 42 mm shaft 15 kW 162 r/min 886 Nm 1.02 0.7 kN 15.6 kN 4.5 kN 61.0 kg
CH-G D502 7.88 PAM80 7.88:1 IEC 80 · 19 mm shaft 1.1 kW 177.8 r/min 59 Nm 14.35 0.6 kN 15.2 kN 4.3 kN 48.0 kg
CH-G D502 7.88 PAM90 7.88:1 IEC 90 · 24 mm shaft 2.2 kW 177.8 r/min 119 Nm 7.17 0.6 kN 15.2 kN 4.3 kN 48.0 kg
CH-G D502 7.88 PAM100 7.88:1 IEC 100 · 28 mm shaft 3 kW 177.8 r/min 162 Nm 5.26 0.6 kN 15.2 kN 4.3 kN 50.0 kg
CH-G D502 7.88 PAM112 7.88:1 IEC 112 · 28 mm shaft 5.5 kW 177.8 r/min 296 Nm 2.87 0.6 kN 15.2 kN 4.3 kN 50.0 kg
CH-G D502 7.88 PAM132 7.88:1 IEC 132 · 38 mm shaft 7.5 kW 177.8 r/min 404 Nm 2.1 0.6 kN 15.2 kN 4.3 kN 54.0 kg
CH-G D502 7.88 PAM160 7.88:1 IEC 160 · 42 mm shaft 15 kW 177.8 r/min 808 Nm 1.05 0.6 kN 15.2 kN 4.3 kN 61.0 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.

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