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 | |
|---|---|
| Gross Power | 173 HP / 129.3 kW |
| Engine Model | Cat C4.4 ACERT |
| Gross Power - 1,800 rpm | 173 HP / 129.3 kW |
| Weights | |
|---|---|
| Operating Weight | 36500 lb / 16556 kg |
| Counterweight | 1440 lb / 653 kg |
| Operating Weight - Without Grapple | 36500 lb / 16556 kg |
| Operating Specifications | |
|---|---|
| Knuckleboom Length | 32 ft / 9.8 m |
| Swing Speed | 9.5 r/min |
| Note | *Theoretical |
| Maximum Reach - Standard Boom | 32 ft / 9.8 m |
| Tail Swing | 108.2 in / 2750 mm |
| Swing Torque* | 73800 ft·lbf / 100360 N·m |
| Swing Bearing - Diameter - Ball Path | 43.5 in / 1105 mm |
| Service Refill Capacities | |
|---|---|
| Hydraulic Tank | 80 gal (US) / 302 l |
| Fuel Tank | 100 gal (US) / 378 l |
| Engine Oil | 2.1 gal (US) / 8 l |
| Swing Drive | 2.6 gal (US) / 4 l |
| Cooling System | 7.5 gal (US) / 29 l |
| DEF Tank | 5 gal (US) / 19 l |
| Hydraulic System | |
|---|---|
| Hydraulic Pressure - System | 3625 psi / 24994 kPa |
| Cylinders - Stick | one |
| Hydraulic Pressure - Swing | 3625 psi / 24994 kPa |
| Hydraulic Oil Flow at 1,800 rpm | 230/230 L/min (60/60 gal/min) |
| Cylinders - Stabilizers | four |
| Cylinders - Main | one |
| Dimensions | |
|---|---|
| Stabilizer Spread - Maximum Down Reach | 166.8 in / 4237 mm |
| Stabilizer Pad Size | 508 × 711 mm (20 × 28 in) |
| Stabilizer Reach Below Grade | 15.5 in / 394 mm |
| Height - Top of Cab | 159.1 in / 4041 mm |
| Stabilizer Spread - Grade | 183.8 in / 4670 mm |
| Note | 579D dimensions are on suspension trailer. |
| Standards | |
|---|---|
| OFPS | OFPS cab meets SAE J2267 |
| Shipping Dimensions - Mounted Trailer | |
|---|---|
| Width | 101.3 in / 2573 mm |
| Height | 159.1 in / 4041 mm |
| GLK Series Grapples - GLK48 | |
|---|---|
| Height - Open - Excluding Rotation | 45.1 in / 1146 mm |
| Weight - Excluding Rotation | 1407 lb / 638 kg |
| Close | 4.5 in / 114 mm |
| Height - Open - Including Rotation | 66 in / 1685 mm |
| Note | All specifications are approximate. |
| Area (tip to tip) | 3 ft² / 0.91 m² |
| Open | 48 in / 1219 mm |
| Weight - Including Rotation | 1907 lb / 865 kg |
| GLK Series Grapples - GLK55 | |
|---|---|
| Weight - Excluding Rotation | 1411 lb / 640 kg |
| Area (tip to tip) | 3.8 ft² / 1.15 m² |
| Close | 5 in / 127 mm |
| Weight - Including Rotation | 1911 lb / 867 kg |
| Open | 54 in / 1372 mm |
| Height - Open - Including Rotation | 68 in / 1724 mm |
| Height - Open - Excluding Rotation | 46.7 in / 1186 mm |
| Note | All specifications are approximate. |
We'll do our best to get back to you as soon as possible.
