For years, Cat® knuckleboom loaders have been known for superior hydraulic performance in tough logging applications, heavy-duty boom and structures that are built to last, and fuel efficient engines that provide impressive torque characteristics. A complete factory installed delimber slasher (DS) package ensures you have the right grapple, delimber, and trailer combination for any job.
Engine | |
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Gross Power | 173 HP / 129.3 kW |
Engine Model | Cat C4.4 ACERT |
Gross Power - 1,800 rpm | 173 HP / 129.3 kW |
Weights | |
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Operating Weight | 33800 lb / 15331 kg |
Operating Weight - Without Grapple | 33800 lb / 15331 kg |
Counterweight | N/A |
Operating Specifications | |
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Knuckleboom Length | 32 ft / 9.8 m |
Swing Speed | 11 r/min |
Tail Swing | 106 in / 2692 mm |
Note | *Theoretical |
Swing Bearing - Diameter - Ball Path | 43.5 in / 1105 mm |
Swing Torque* | 49173 ft·lbf / 66870 N·m |
Maximum Reach - Standard Boom | 32 ft / 9.8 m |
Service Refill Capacities | |
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Hydraulic Tank | 80 gal (US) / 302 l |
Fuel Tank | 100 gal (US) / 378 l |
Engine Oil | 2.1 gal (US) / 8 l |
Swing Drive | 1 gal (US) / 4 l |
Cooling System | 7.5 gal (US) / 29 l |
DEF Tank | 5 gal (US) / 19 l |
Hydraulic System | |
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Hydraulic Pressure - Swing | 3625 psi / 24994 kPa |
Cylinders - Main | one |
Hydraulic Pressure - System | 3625 psi / 24994 kPa |
Cylinders - Stabilizers | four |
Hydraulic Oil Flow at 1,800 rpm | 230/174 L/min (60/46 gal/min) |
Cylinders - Stick | one |
Dimensions | |
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Stabilizer Reach Below Grade | 17 in / 433 mm |
Stabilizer Spread - Maximum Down Reach | 166.8 in / 4237 mm |
Stabilizer Pad Size | 508 × 711 mm (20 × 28 in) |
Height - Top of Cab | 157.6 in / 4003 mm |
Stabilizer Spread - Grade | 187.3 in / 4758 mm |
Note | 559D dimensions are on non-suspension trailer. |
Standards | |
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OFPS | OFPS cab meets SAE J2267 |
Shipping Dimensions - Mounted Trailer | |
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Width | 101.3 in / 2573 mm |
Height | 157.6 in / 4003 mm |
GLK Series Grapples - GLK55 | |
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Area (tip to tip) | 3.8 ft² / 1.15 m² |
Open | 54 in / 1372 mm |
Height - Open - Excluding Rotation | 46.7 in / 1186 mm |
Close | 5 in / 127 mm |
Weight - Including Rotation | 1911 lb / 867 kg |
Height - Open - Including Rotation | 68 in / 1724 mm |
Weight - Excluding Rotation | 1411 lb / 640 kg |
Note | All specifications are approximate. |
GLK Series Grapples - GLK48 | |
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Area (tip to tip) | 3 ft² / 0.91 m² |
Weight - Including Rotation | 1907 lb / 865 kg |
Height - Open - Excluding Rotation | 45.1 in / 1146 mm |
Close | 4.5 in / 114 mm |
Open | 48 in / 1219 mm |
Weight - Excluding Rotation | 1407 lb / 638 kg |
Height - Open - Including Rotation | 66 in / 1685 mm |
Note | All specifications are approximate. |
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