HC-250 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.
CI BodyFabricatedVertical option
25–90:1
Nominal ratios
5.5kW
Max. rating · 1500 rpm
Ø42mm
Output shaft
45kg
Average weight
Dimensions (mm)
| Code | Dimension | CI body | Fabricated |
|---|---|---|---|
| Shafts | |||
| ØD1 | Input shaft Ø | 24 | 24 |
| L1 | Input shaft length | 50 | 50 |
| ØD2 | Output shaft Ø | 42 | 42 |
| L2 | Output shaft length | 70 | 70 |
| N | 70 | 70 | |
| M | 98 | 98 | |
| Overall | |||
| C | Centre distance, input to output | 250 | 250 |
| A | Overall length | 470 | 465 |
| H | Overall height | 250 | 250 |
| h | Shaft centre height | 135 | 135 |
| S | 400 | 400 | |
| W | 160 | 160 | |
| B | Base width | 170 | 180 |
| Foot & mounting | |||
| Z | 77.5 | 77.5 | |
| T | 25 | 25 | |
| P | 350 | 350 | |
| Q | – | – | |
| R | – | – | |
| U | – | 25 | |
| F | 140 | 140 | |
| ØK | Foot bolt hole Ø | 14 | 14 |
| Keys | |||
| X1 | Input key width | 8 | 8 |
| Y1 | Input shaft to key top | 27.5 | 27.5 |
| X | Output key width | 12 | 12 |
| Y | Output shaft to key top | 45.5 | 45.5 |
| Weight & oil | |||
| Weight | Average weight | 45 kg | 45 kg |
| Oil | Oil quantity | 3.5 L | 3.5 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 | 25.9 | 60 | 5.5 | 3.7 | 2.9 |
| 31.5:1 | 31.1 | 47.6 | 5 | 3.3 | 2.6 |
| 35.5:1 | 36.6 | 42.3 | 4.5 | 3 | 2.4 |
| 40:1 | 39.7 | 37.5 | 4.1 | 2.7 | 2.2 |
| 45:1 | 46.5 | 33.3 | 3.7 | 2.5 | 2 |
| 50:1 | 50 | 30 | 3.4 | 2.3 | 1.8 |
| 56:1 | 56.2 | 26.8 | 3.1 | 2.1 | 1.6 |
| 63:1 | 66.6 | 23.8 | 2.8 | 1.9 | 1.5 |
| 71:1 | 71 | 21.1 | 2.5 | 1.7 | 1.3 |
| 80:1 | 78.2 | 18.8 | 2.3 | 1.5 | 1.2 |
| 90:1 | 90 | 16.7 | 2.1 | 1.4 | 1.1 |
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
Mount driven components with a flexible coupling. Contact us with your arrangement for an overhung load check.
Need a price or a certified GA drawing?
Send the duty for HC-250 and we reply with price, delivery and a certified GA drawing.