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988K Steel Mill Arrangement – PÁS CARREGADORAS DE RODAS

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Descrição

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 at a lower cost per ton. 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.

Informações Tećnicas

  • Net Power: 403 kW
  • Operating Weight: 51062 kg
  • Bucket Capacities: 5.4-6.3 m3 (7.0-8.3 yd3)

Mais informações

Engine

  • Net Power: 403 kW / 541 HP
  • Engine Model: Cat® C18
  • Net Power – SAE J1349: 403 kW / 541 HP
  • Bore: 145 mm / 5.7 in
  • Stroke: 183 mm / 7.2 in
  • Displacement: 18.1 l / 1105 in³
  • Torque Rise: 58 % / 58 %
  • Rated Speed: 1,700 rpm
  • Emissions: U.S. EPA Tier 4 Final/EU Stage IV, Tier 2 Equivalent
  • Gross – ISO 14396: 432 kW / 580 HP
  • Peak Power Speed: 1,500 rpm
  • Peak Power Speed – 1,500 rpm – Gross – ISO 14396: 432 kW / 580 HP
  • Peak Power Speed – 1,500 rpm – Gross – SAE J1995: 439 kW / 588 HP
  • Peak Power Speed – 1,500 rpm – Net Power – SAE J1349: 403 kW / 541 HP
  • Peak Torque – 1,200 rpm: 2852 N·m / 2104 lb/ft

Operating Specifications

  • Operating Weight: 51062 kg / 112574 lb
  • Rated Payload: 11.3 t / 12.5 t
  • Rated Payload – Standard: 11.3 t / 12.5 t
  • Bucket Capacity Range: 6.4-7.6 m3 (8.3-10 yd3)
  • Cat Truck Match – Standard: 770-772
  • Cat Truck Match – High Lift: 773-775
  • Rated Payload – High Lift: 11.3 t / 12.5 t

Transmission

  • Transmission Type: Cat planetary power shift
  • Forward – 1: 6.5 km/h / 4 mile/h
  • Forward – 2: 11.6 km/h / 7.2 mile/h
  • Forward – 3: 20.4 km/h / 12.7 mile/h
  • Forward – 4: 34.7 km/h / 21.6 mile/h
  • Reverse – 1: 7.5 km/h / 4.7 mile/h
  • Reverse – 2: 13.3 km/h / 8.3 mile/h
  • Reverse – 3: 23.2 km/h / 14.4 mile/h
  • Direct Drive – Forward 1: Lock-up disabled
  • Direct Drive – Forward 2: 12.5 km/h / 7.8 mile/h
  • Direct Drive – Forward 3: 22.3 km/h / 13.9 mile/h
  • Direct Drive – Forward 4: 39.3 km/h / 24.4 mile/h
  • Direct Drive – Reverse 1: 8 km/h / 5 mile/h
  • Direct Drive – Reverse 2: 14.3 km/h / 8.9 mile/h
  • Direct Drive – Reverse 3: 25.5 km/h / 15.8 mile/h

Hydraulic System – Lift/Tilt

  • Cylinders, Double Acting – Lift, Bore and Stroke: 210 mm × 1050 mm (8.3 in × 41.3 in)
  • Cylinders, Double Acting – Tilt, Bore and Stroke: 267 mm × 685 mm (10.5 in × 27.0 in)
  • Lift/Tilt System: Variable displacement piston
  • Maximum Flow: 52 l/min / 13.7 gal/min
  • Maximum Flow at 1,400-1,860 rpm: 580 l/min / 153 gal/min
  • Pilot System: Variable displacement piston
  • Relief Valve Setting: 3800 kPa / 551 psi
  • Lift/Tilt System – Circuit: EH- Positive Flow Control, Flow Sharing
  • Relief Valve Setting – Lift/Tilt: 32800 kPa / 4757 psi

Service Refill Capacities

  • Fuel Tank: 686 l / 181 gal (US)
  • Cooling System: 120 l / 31.7 gal (US)
  • Crankcase: 60 l / 15.9 gal (US)
  • Transmission: 120 l / 31.7 gal (US)
  • Differential – Final Drives – Front: 186 l / 49.1 gal (US)
  • Differential – Final Drives – Rear: 186 l / 49.1 gal (US)
  • Hydraulic System – Tank Only: 240 l / 63.4 gal (US)
  • Diesel Exhaust Fluid Tank (Tier 4): 33 l / 8.7 gal (US)
  • Hydraulic System Factory Fill: 475 l / 125.5 gal (US)

Buckets

  • Bucket Capacities: 5.4-6.3 m3 (7.0-8.3 yd3)

Axles

  • Front: Fixed
  • Rear: Trunnion
  • Oscillation Angle: ±6°

Brakes

  • Brakes: SAE J1473 OCT90, ISO 3450:1992

Hydraulic System – Steering

  • Steering System – Circuit: Pilot, load sensing
  • Steering System – Pump: Piston, variable displacement
  • Relief Valve Setting – Steering: 30000 kPa / 4351 psi
  • Maximum Flow: 270 l/min / 71.3 gal/min
  • Steering Cycle Times – High Idle: 3.4 s / 3.4 s
  • Steering Cycle Times – Low Idle: 5.6 s / 5.6 s
  • Total Steering Angle: 80 ° / 80 °

Hydraulic Cycle Time (1,400-1,860 rpm)

  • Dump: 2.2 s / 2.2 s
  • Lower Float Down: 3.5 s / 3.5 s
  • Rack Back: 4.5 s / 4.5 s
  • Raise: 8 s / 8 s
  • Total Hydraulic Cycle Time – Empty Bucket: 18.2 s / 18.2 s

Sound Performance – Standard

  • Machine Sound Level (ISO 6395): 111 dB(A) / 111 dB(A)
  • Operator Sound Level (ISO 6396): 71 dB(A) / 71 dB(A)

Sound Performance – Suppression

  • Machine Sound Level (ISO 6395): 109 dB(A) / 109 dB(A)
  • Operator Sound Level (ISO 6396): 70 dB(A) / 70 dB(A)

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