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Introduced in 1963, the 988 has been the industry leader for 50 years. Focused on helping our customers succeed, we have continued to build upon each new series. The 988K continues our legacy of reliability, performance, safety, operator comfort, serviceability, and efficiency. The Cat 988K Block Handler was designed to withstand the demanding and harsh environment of block handling applications. The features of the 988K Block Handler work together to provide a durable and reliable machine to meet your block handling needs.
| Net Power | 541 HP |
| Engine Model | C18 Cat® |
| Net Power - SAE J1349 | 541 HP |
| Bore | 5.7 in |
| Stroke | 7.2 in |
| Displacement | 1105 in³ |
| Torque Rise | 58 % |
| Peak Power Speed - Gross - SAE J1995 | 588 HP |
| Peak Power Speed | 1500 r/min |
| Peak Power Speed - Gross - ISO 14396 | 580 HP |
| Peak Torque - 1,200 rpm | 2104 lb/ft |
| Peak Power Speed - Net Power - SAE J1349 | 541 HP |
| Rated Speed | 1700 r/min |
| Gross - ISO 14396 | 580 HP |
| Emissions | Einhaltung von EPA Tier 4 Final (USA)/Stufe V (EU), Tier-2-konform |
| Operating Weight | 135602 lb |
| Transmission Type | Cat-Planetenlastschaltgetriebe |
| Forward - 1 | 3.6 mile/h |
| Forward - 2 | 4.5 mile/h |
| Forward - 3 | 11.4 mile/h |
| Forward - 4 | 19 mile/h |
| Reverse - 1 | 4.1 mile/h |
| Reverse - 2 | 7.3 mile/h |
| Reverse - 3 | 13 mile/h |
| Direct Drive - Forward 4 | 21 mile/h |
| Direct Drive - Reverse 2 | 7.7 mile/h |
| Direct Drive - Reverse 1 | 4.3 mile/h |
| Direct Drive - Forward 2 | 6.7 mile/h |
| Direct Drive - Forward 3 | 11.9 mile/h |
| Direct Drive - Forward 1 | Lock-up disabled |
| Direct Drive - Reverse 3 | 13.7 mile/h |
| Maximum Flow at 1,400-1,860 rpm | 153 gal/min |
| Cylinders, Double Acting - Lift, Bore and Stroke | 235 mm × 976 mm (9.3 in × 38.4 in) |
| Cylinders, Double Acting - Tilt, Bore and Stroke | 291 mm × 671 mm (11.5 in × 26.4 in) |
| Relief Valve Setting - Main | 551 psi |
| Maximum Flow at 1,700 rpm | 13.7 gal/min |
| Pilot System | Variable displacement piston |
| Relief Valve Setting - Lift/Tilt | 4757 psi |
| Lift/Tilt System | Variable displacement piston |
| Lift/Tilt System - Circuit | Pilot operated - EH control, flow sharing |
| Lower Float Down | 3.5 s |
| Rack Back | 4.5 s |
| Total Hydraulic Cycle Time - Empty Bucket | 18.2 s |
| Dump | 2.2 s |
| Raise | 8 s |
| Maximum Flow | 74 gal/min |
| Steering Cycle Times - High Idle | 3.4 s |
| Total Steering Angle | 86 ° |
| Steering System - Circuit | Pilot, load sensing |
| Steering Cycle Times - Low Idle | 5.6 s |
| Relief Valve Setting - Steering | 4641 psi |
| Steering System - Pump | Piston, variable displacement |
| Cooling System | 31.7 gal (US) |
| Transmission | 31.7 gal (US) |
| Differential - Final Drives - Rear | 49.1 gal (US) |
| Fuel Tank | 188.1 gal (US) |
| Crankcase | 15.9 gal (US) |
| Diesel Exhaust Fluid Tank | 8.7 gal (US) |
| Differential - Final Drives - Front | 49.1 gal (US) |
| Hydraulic System Factory Fill | 125.5 gal (US) |
| Hydraulic System - Tank Only | 63.4 gal (US) |
| Front | Fixed |
| Rear | Trunnion |
| Oscillation Angle | 13 ° |
| Brakes | SAE J1473 OKT90, ISO 3450:1992 |
| Interior Sound Level | 71 dB(A) |
| Exterior Sound Level | 111 dB(A) |
| Interior Sound Level | 70 dB(A) |
| Exterior Sound Level | 109 dB(A) |
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