990K Millyard Arrangement Wheel Loader
Cat Large Wheel Loaders are designed with durability built in, ensuring maximum availability through multiple life cycles. With optimized performance and simplified serviceability, our machines allow you to move more material efficiently and safely. The 990K Millyard Arrangement is designed to meet the demands of millyard applications. The features of the 990K Millyard work together to provide a durable and reliable machine to meet the needs of the modern millyard.
| Operating Weight | 91807 kg |
|---|---|
| Tipping Load - Articulated 35° | 37148 kg |
| Tipping Load - Straight | 42180 kg |
| Net Power | 521 kW |
|---|---|
| Engine Model | Cat® C27 ™ |
| Rated Speed | 1,800/min |
| Torque Rise | 18 % |
| Bore | 137.2 mm |
| Stroke | 152.4 mm |
| Displacement | 27.03 l |
| Emissions | U.S. EPA Tier 4 Final or Tier 2 equivalent |
| Gross - ISO 14396 | 561 kW |
| Net Power - SAE J1349 | 521 kW |
| Peak Torque - 1,200 rpm | 3557 N·m |
| Rated Speed - Gross - ISO 14396 | 561 kW |
| Rated Speed - Gross - SAE J1995 | 571 kW |
| Rated Speed - Net Power - SAE J1349 - High Ambient | 483 kW |
| Rated Speed - Net Power - SAE J1349 - Standard Ambient | 521 kW |
| Forward - 1 | 7.3 km/h |
|---|---|
| Forward - 2 | 13.3 km/h |
| Forward - 3 | 22.9 km/h |
| Reverse - 1 | 7.9 km/h |
| Reverse - 2 | 14.7 km/h |
| Reverse - 3 | 24.9 km/h |
| Direct Drive - Forward 1 | Lock-up disabled |
| Direct Drive - Forward 2 | 13.7 km/h |
| Direct Drive - Forward 3 | 24.5 km/h |
| Direct Drive - Reverse 1 | 8.7 km/h |
| Direct Drive - Reverse 2 | 15.4 km/h |
| Direct Drive - Reverse 3 | 26.4 km/h |
| Note | Travel speeds based on Michelin 45/65R39 LD D2**L5 tires. |
| Transmission Type | Cat-Planetenlastschaltgetriebe |
| Front | Fixed |
|---|---|
| Oscillation Angle | 8.5° |
| Rear | Trunnion |
| Lift/Tilt System - Circuit | Positive flow control |
|---|---|
| Lift/Tilt System | Variable displacement piston |
| Relief Valve Setting - Lift/Tilt | 33000 kPa |
| Pilot System | Open loop and pressure reducing |
| Cylinders, Double Acting - Lift, Bore and Stroke | 254 mm × 1264 mm (10.0 in × 49.8 in) |
| Cylinders, Double Acting - Tilt, Bore and Stroke | 317.5 mm × 819 mm (12.5 in × 32.2 in) |
| Maximum Flow at 1,800 rpm (1) | 817 l/min |
| Maximum Flow at 1,800 rpm (2) | 84 l/min |
| Relief Valve Setting - Main | 3500 kPa |
| Relief Valve Setting - Steering | 32000 kPa |
|---|---|
| Total Steering Angle | 70° |
| Maximum Flow at 1,400 rpm | 358 l/min |
| Steering System - Circuit | Pilot, load sensing |
| Steering System - Pump | Piston, variable displacement |
| Fuel Tank | 1114 l |
|---|---|
| Cooling System | 208 l |
| Transmission | 110 l |
| Differential - Final Drives - Front | 271 l |
| Differential - Final Drives - Rear | 261 l |
| Engine Crankcase | 75.7 l |
| Hydraulic System Factory Fill | 795 l |
| Hydraulic Tank - Implement and Hydraulic Fan | 261 l |
| Hydraulic Tank - Steering and Braking | 132 l |
| Brakes | SAE J1473 OKT90, ISO 3450:1992 |
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| Dump Angle at Maximum Lift | 29.3 degrees |
|---|---|
| Fork Height at Maximum Lift | 5591 mm |
| Fork Height with Level Arms | 2708 mm |
| Fork Top Clamp Opening | 3745 mm |
| Front Axle Centerline to Fork Tip | 5362 mm |
| Ground to Bumper Clearance | 959 mm |
| Ground to Center of Front Axle | 1186 mm |
| Ground to Lower Hitch Clearance | 596 mm |
| Ground to Top of Exhaust Stacks | 5049 mm |
| Ground to Top of Hood | 3862 mm |
| Ground to Top of ROPS | 5240 mm |
| Hinge Pin Height at Maximum Lift | 5903 mm |
| Maximum Overall Length | 13840 mm |
| Rear Axle - Centerline to Bumper | 3795 mm |
| Wheel Base | 4600 mm |
| Fork End Area | 7.2 m² |
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| Dump | 2.9 s |
|---|---|
| Lower | 3.7 s |
| Lower Float Down | 3.6 s |
| Rack Back | 4.8 s |
| Raise | 9.4 s |
| Machine Sound Level (ISO 6395:2008) | 115 dB(A) |
|---|---|
| Operator Sound Level (ISO 6396:2008) | 69 dB(A) |
| Machine Sound Level (ISO 6395:2008) | 113 dB(A) |
|---|---|
| Operator Sound Level (ISO 6396:2008) | 69 dB(A) |
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