D475A-8
رقم القطعة: KOMATSU-D475A-8
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الوصف
D475A-8
المواصفات
| Horsepower (HP) | 890 HP @ 2,000 rpm |
|---|---|
| Horsepower (kW) | 664 kW @ 2 000 rpm |
| Operating weight (kg) | 115 300 |
| Operating weight (lbs) | 254,195 |
| Blade capacity (m^3) | 27.2 - 34.4 |
| Blade capacity (yd^3) | 35.6 - 44.5 |
| Suspension | Oscillating equalizer bar and pivot shaft |
| Track roller frame | Cylindrical, high-tensile-strength steel construction |
| Rollers and idlers | Lubricated track rollers |
| Type of shoes (standard) | Single grouser |
| Number of track rollers (each side) | 8 |
| Number of shoes (each side) | 41 |
| Number of carrier rollers (each side) | 2 |
| Grouser height (mm) | 105 |
| Grouser height (in) | 4.1 |
| Shoe width (standard)(in) | 28 |
| Shoe width (standard)(mm) | 710 |
| Ground contact area (ft2) | 69.1 - 88.6 |
| Ground contact area (cm^2) | 64 240 - 82 340 |
| Ground pressure (with standard shoe)(ISO 16754)(psi) | 15.4 - 17.1 |
| Ground pressure (with standard shoe)(ISO 16754)(kg/cm^2) | 1.08 - 1.20 |
| Ground pressure (with standard shoe)(ISO 16754)(kpa) | 106.1 - 118 |
| Engine model | Komatsu SAA12V140E-7 |
| Dozers type | 4-cycle, water-cooled, direct injection |
| Aspiration | Turbocharged, air-to-air charge air cooler, cooled EGR |
| Number of cylinders | 12 |
| Bore x stroke (in) | 5.51 x 6.50 |
| Bore x stroke (mm) | 140 x 165 |
| Piston displacement (L) | 30.48 |
| Piston displacement (in^3) | 1,860 |
| Footnote | *EPA Tier 4 Final emissions certified |
| SAEJ1995 - Gross (kW) | 697 |
| SAEJ1995 - Gross (HP) | 934 |
| ISO 9249 / SAE J1349 - Net (HP) | 890 |
| ISO 9249 / SAE J1349 - Gross (kW) | 664 |
| Rated rpm | 2,000 |
| Fan drive type | Hydraulic |
| Filter | Full-flow |
| Method | Gear pump, force lubrication |
| Operator weight (approximate) | Includes dual tilt U dozer, giant variable ripper, cab, ROPS (ISO 3471), operator, standard equipment, rated lubricant volumes, coolant, full fuel tank and 810 mm (32 in) track shoes. |
| Tractor weight (kg) | 88 200 |
| Tractor weight (lbs) | 194,450 |
| Tractor weight inclusions | Including rated capacity of lubricant, coolant, full fuel tank, operator, and 710 mm (28 in) shoe, less front and rear attachments. |
| Final drive features | Double-reduction final drive of spur and planetary gear sets to increase tractive effort and reduce gear tooth stresses for long final drive life. Segmented sprocket teeth are bolt-on for easy replacement. |
| Fuel tank (US gal) | 507.2 |
| Fuel tank (L) | 1 920 |
| Coolant (US gal) | 70 |
| Coolant (L) | 265 |
| Engine oil (L) | 120 |
| Engine oil (US gal) | 31.7 |
| Final drive (US gal) | 19.8 |
| Final drive (L) | 75 |
| Steering system features | Palm Command Control System (PCCS), joystick controlled, wet multiple-disc steering clutches are spring-loaded and hydraulically released. Wet multiple-disc, pedal/lever controlled steering brakes are spring-actuated hydraulically released and require no adjustment. Steering clutches and brakes are interconnected for easy, responsive steering. |
| Minimum turning radius (in) | 181 |
| Minimum turning radius (m) | 4.6 |
| Hydraulic system features | Closed-center load sensing system (CLSS) designed for precise and responsive control, and for efficient simultaneous operation. |
| Hydraulic control unit (U.S. gal/min) | All spool control valves externally mounted beside the hydraulic tank. Variable piston pump with capacity (discharge flow) of 142.9 US gpm for implement at rated engine rpm. |
| Hydraulic control unit (ltr/min) | All spool control valves externally mounted beside the hydraulic tank. Variable piston pump with capacity (discharge flow) of 541 L/min for implement at rated engine rpm. |
| Relief valve setting (kg/cm^2) | 280 |
| Relief valve setting (psi) | 3,983 |
| Relief valve setting (MPa) | 27.5 |
| Blade lift | Raise, hold, lower, and float |
| Blade tilt | Right, hold, and left |
| Ripper lift | Raise, hold, and lower |
| Blade tilt /1 (in) | 9.8 |
| Blade tilt /1 (mm) | 250 |
| Blade lift / 2 (mm) | 180 |
| Blade lift / 2 (in) | 7.1 |
| Hydraulic cylinders | Double-acting, piston type |
| Torque converter, transmission, bevel gear, and steering system (US gal) | 55.5 |
| Torque converter, transmission, bevel gear, and steering system (L) | 210 |
| Transmission features | Komatsu TORQFLOW transmission consists of a water-cooled, 3-element, 1-stage, 1-phase torque converter with lockup clutch and a planetary gear, multiple-disc clutch transmission which is hydraulically actuated and force-lubricated for optimum heat dissipation. Gearshift lock lever and neutral safety switch help prevent accidental starts. |
| 1st torqflow forward (kph) | 3.4 |
| 1st torqflow forward (mph) | 2.1 |
| 2nd torqflow forward (kph) | 6.3 |
| 2nd torqflow forward (mph) | 3.9 |
| 3rd torqflow forward (kph) | 11.6 |
| 3rd torqflow forward (mph) | 7.2 |
| 3rdL torqflow forward (kph) | 7.4 |
| 3rdL torqflow forward (mph) | 4.6 |
| 1st torqflow reverse (kph) | 4.4 |
| 1st torqflow reverse (mph) | 2.7 |
| 2nd torqflow reverse (kph) | 8.4 |
| 2nd torqflow reverse (mph) | 5.2 |
| 3rd torqflow reverse (kph) | 14.3 |
| 3rd torqflow reverse (mph) | 8.9 |
| 3rdL torqflow reverse (kph) | 9.0 |
| 3rdL torqflow reverse (mph) | 5.6 |
| Ripper tilt | Increase, hold, and decrease |
| Ripper lift (in) | 8.9 |
| Ripper lift (mm) | 225 |
| Ripper tilt (in) | 8.9 |
| Ripper tilt (mm) | 225 |
| Ground pressure (kPa) | 133.4 |
| Ground pressure (kg/cm^2) | 1.36 |
| Ground pressure (psi) | 19.35 |
| Extreme service track shoes | Lubricated tracks. Unique seals prevent entry of foreign abrasives into pin to bushing clearances to provide extended service life. Track tension is easily adjusted with grease gun. |
| Komatsu Bogie (K-Bogie) undercarriage | Lubricated track rollers are resiliently mounted to the track frame with a bogie suspension system whose oscillating motion is cushioned by rubber pads. |
| Blade tilt / 2 (mm) | 250 |
| Blade tilt / 2 (in) | 9.8 |
| Semi-U dozer or U dozer (L) | 190 |
| Semi-U dozer or U dozer (US gal) | 50.2 |
| Multi-shank ripper (variable)(US gal) | 34.3 |
| Multi-shank ripper (variable)(L) | 130 |
| Giant ripper (L) | 130 |
| Giant ripper (US gal) | 34.3 |
| SAEJ1995 - gross - reverse (kW) | 777 |
| SAEJ1995 - gross - reverse (HP) | 1,040 |
| ISO 9249 / SAE J1349 - Gross - Reverse (kW) | 772 |
| ISO 9249 / SAE J1349 - Net 0 Reverse (HP) | 968 |
| Net horsepower at the maximum speed of radiator cooling fan - forward (kW) | 641 |
| Net horsepower at the maximum speed of radiator cooling fan - forward (HP) | 860 |
| Net horsepower at the maximum speed of radiator cooling fan - reverse (HP) | 968 |
| Net horsepower at the maximum speed of radiator cooling fan - reverse (kW) | 722 |
