HD-1235+250 F Crane Duty Gearbox
Four stage helical gearbox with three helical stages plus a primary reduction, case-hardened and profile-ground gears, roller bearings throughout and a solid output shaft. Heavy duty fabricated steel housing.
Dimensions (mm)
| Code | Dimension | Fabricated |
|---|---|---|
| Shafts | ||
| ØD1 | Input shaft Ø | 100 |
| L1 | Input shaft length | 150 |
| ØD2 | Output shaft Ø | 270 |
| L2 | Output shaft length | 400 |
| N | 295 | |
| M | 510 | |
| Overall | ||
| C | Centre distance, input to output | 1235 |
| C1 | Primary shaft offset | 250 |
| A | Overall length | 2350 |
| H | Overall height | 1245 |
| h | Shaft centre height | 620 |
| h1 | Primary shaft height | 370 |
| S | 2090 | |
| W | 800 | |
| B | Base width | 840 |
| Foot & mounting | ||
| Z | 415 | |
| T | 130 | |
| P | 678 | |
| Q | 465 | |
| R | 687 | |
| U | 130 | |
| F | 710 | |
| ØK | Foot bolt hole Ø | 38 |
| Keys | ||
| X1 | Input key width | 28 |
| Y1 | Input shaft to key top | 106.5 |
| X | Output key width | 63 |
| Y | Output shaft to key top | 282 |
| Weight & oil | ||
| Weight | Average weight | 5800 kg |
| Oil | Oil quantity | 350 L |
Letter codes match the GA drawing. Weight and oil quantity are indicative. Dimensions are subject to change with product development.
Power ratings
| Ratio i | n₂ rpm | kW @1500 | kW @1000 | kW @750 |
|---|---|---|---|---|
| 140:1 | 10.7 | 245 | 160.8 | 128.7 |
| 160:1 | 9.4 | 208.2 | 136.7 | 109.3 |
| 180:1 | 8.3 | 177 | 116.2 | 92.9 |
| 200:1 | 7.5 | 150.4 | 98.7 | 79 |
| 224:1 | 6.7 | 127.8 | 83.9 | 67.1 |
| 250:1 | 6 | 108.7 | 71.3 | 57.1 |
| 280:1 | 5.4 | 92.4 | 60.6 | 48.5 |
| 315:1 | 4.8 | 78.5 | 51.5 | 41.2 |
| 355:1 | 4.2 | 66.7 | 43.8 | 35 |
| 400:1 | 3.8 | 56.7 | 37.2 | 29.8 |
| 450:1 | 3.3 | 48.2 | 31.6 | 25.3 |
| 500:1 | 3 | 40.9 | 26.9 | 21.5 |
| 560:1 | 2.7 | 34.8 | 22.8 | 18.3 |
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 168 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-1235
| ØD | ØP | ØS | C | SL1 | T | ØDR | ØB | BL |
|---|---|---|---|---|---|---|---|---|
| 900 | 750 | 600 | 640 | 7 | 80 | 48 | 310 | 90 |
| 1000 | 825 | 650 | 640 | 7 | 80 | 48 | 310 | 90 |
| 1100 | 900 | 700 | 640 | 7 | 80 | 48 | 310 | 90 |
All dimensions in mm. Other gear ring sizes on request. Request a certified drawing before manufacture.
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