HC-300 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
25–120:1
Nominal ratios
7.5kW
Max. rating · 1500 rpm
Ø48mm
Output shaft
74kg
Average weight
Dimensions (mm)
| Code | Dimension | CI body | Fabricated |
|---|---|---|---|
| Shafts | |||
| ØD1 | Input shaft Ø | 28 | 28 |
| L1 | Input shaft length | 60 | 60 |
| ØD2 | Output shaft Ø | 48 | 48 |
| L2 | Output shaft length | 80 | 80 |
| N | 78 | 78 | |
| M | 106 | 106 | |
| Overall | |||
| C | Centre distance, input to output | 300 | 300 |
| A | Overall length | 530 | 534 |
| H | Overall height | 269 | 273 |
| h | Shaft centre height | 133 | 133 |
| S | 470 | 470 | |
| W | 180 | 180 | |
| B | Base width | 190 | 200 |
| Foot & mounting | |||
| Z | 90 | 90 | |
| T | 30 | 30 | |
| P | 152 | 152 | |
| Q | 113 | 113 | |
| R | 145 | 145 | |
| U | – | 30 | |
| F | 160 | 160 | |
| ØK | Foot bolt hole Ø | 14 | 14 |
| Keys | |||
| X1 | Input key width | 8 | 8 |
| Y1 | Input shaft to key top | 31 | 31 |
| X | Output key width | 14 | 14 |
| Y | Output shaft to key top | 52 | 52 |
| Weight & oil | |||
| Weight | Average weight | 74 kg | 75 kg |
| Oil | Oil quantity | 5 L | 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 | 25.2 | 60 | 7.5 | 5.5 | 4.4 |
| 31.5:1 | 31.5 | 47.6 | 6.8 | 5 | 4 |
| 35.5:1 | 36.6 | 42.3 | 6.2 | 4.5 | 3.6 |
| 40:1 | 41.1 | 37.5 | 5.6 | 4.1 | 3.3 |
| 45:1 | 45 | 33.3 | 5.1 | 3.7 | 3 |
| 50:1 | 49.6 | 30 | 4.6 | 3.4 | 2.7 |
| 56:1 | 56 | 26.8 | 4.2 | 3.1 | 2.4 |
| 63:1 | 61.2 | 23.8 | 3.8 | 2.8 | 2.2 |
| 71:1 | 72.4 | 21.1 | 3.5 | 2.5 | 2 |
| 80:1 | 78 | 18.8 | 3.2 | 2.3 | 1.8 |
| 90:1 | 90 | 16.7 | 2.9 | 2.1 | 1.7 |
| 100:1 | 97.2 | 15 | 2.6 | 1.9 | 1.5 |
| 120:1 | 121.4 | 12.5 | 2.4 | 1.7 | 1.4 |
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
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-300 and we reply with price, delivery and a certified GA drawing.