HC-425 Crane Duty Gearbox
Three stage helical gearbox with three reduction stages, case-hardened and profile-ground gears, roller bearings throughout and a solid output shaft.
Dimensions (mm)
| Code | Dimension | CI body | Fabricated |
|---|---|---|---|
| Shafts | |||
| ØD1 | Input shaft Ø | 38 | 38 |
| L1 | Input shaft length | 80 | 80 |
| ØD2 | Output shaft Ø | 70 | 70 |
| L2 | Output shaft length | 105 | 105 |
| N | 128 | 128 | |
| M | 135 | 135 | |
| Overall | |||
| C | Centre distance, input to output | 425 | 425 |
| A | Overall length | 760 | 780 |
| H | Overall height | 410 | 410 |
| h | Shaft centre height | 210 | 210 |
| S | 680 | 680 | |
| W | 270 | 270 | |
| B | Base width | 300 | 300 |
| Foot & mounting | |||
| Z | 147 | 147 | |
| T | 35 | 35 | |
| P | 230 | 230 | |
| Q | 380 | 155 | |
| R | – | 225 | |
| U | – | 35 | |
| F | 250 | 250 | |
| ØK | Foot bolt hole Ø | 21 | 21 |
| Keys | |||
| X1 | Input key width | 10 | 10 |
| Y1 | Input shaft to key top | 41.5 | 41.5 |
| X | Output key width | 20 | 20 |
| Y | Output shaft to key top | 74.5 | 74.5 |
| Weight & oil | |||
| Weight | Average weight | 230 kg | 200 kg |
| Oil | Oil quantity | 20 L | 15 L |
| Vertical mounting | |||
| — | Same dimensions, vertical mounted arrangement available | ||
Letter codes match the GA drawing. Weight and oil quantity are indicative. Dimensions are subject to change with product development.
Power ratings
| Ratio i | Actual | n₂ rpm | kW @1500 | kW @1000 | kW @750 |
|---|---|---|---|---|---|
| 25:1 | 26.9 | 60 | 39 | 30 | 24 |
| 31.5:1 | 31.5 | 47.6 | 35.4 | 27.3 | 21.8 |
| 35.5:1 | 33.6 | 42.3 | 32.3 | 24.8 | 19.8 |
| 40:1 | 41.5 | 37.5 | 29.3 | 22.6 | 18 |
| 45:1 | 45 | 33.3 | 26.7 | 20.5 | 16.4 |
| 50:1 | 49.6 | 30 | 24.3 | 18.7 | 14.9 |
| 56:1 | 56 | 26.8 | 22.1 | 17 | 13.6 |
| 63:1 | 61.7 | 23.8 | 20.1 | 15.5 | 12.3 |
| 71:1 | 72.7 | 21.1 | 18.3 | 14.1 | 11.2 |
| 80:1 | 80.9 | 18.8 | 16.6 | 12.8 | 10.2 |
| 90:1 | 88.4 | 16.7 | 15.1 | 11.6 | 9.3 |
| 100:1 | 98.3 | 15 | 13.8 | 10.6 | 8.5 |
| 120:1 | 116 | 12.5 | 11.4 | 8.8 | 7 |
| 140:1 | 140.1 | 10.7 | 10.4 | 8 | 6.4 |
Nominal input power in kW at the stated input speed. n₂ is the nominal output speed at 1500 rpm input. Consult J.S. Gear for application-specific selection.
Output shaft loading
Permissible overhung load on the output shaft is 24 kN, acting at the middle of the shaft extension (L/2). Above this, support the drum on its own shaft and bearings with a flexible coupling, or use the standard gear ring below.
Standard gear ring · HC-425
| ØD | ØP | ØS | C | SL1 | T | ØDR | ØB | BL |
|---|---|---|---|---|---|---|---|---|
| 400 | 325 | 215 | 220 | 5 | 20 | 21 | 90 | 40 |
| 428 | 350 | 215 | 220 | 5 | 20 | 21 | 90 | 40 |
| 450 | 375 | 250 | 220 | 5 | 20 | 21 | 90 | 40 |
All dimensions in mm. Other gear ring sizes on request. Request a certified drawing before manufacture.
Need a price or a certified GA drawing?
Send the duty for HC-425 and we reply with price, delivery and a certified GA drawing.