KOMATSU D37EX-23 bulldozer
Model | Komatsu SAA4D95LE-6* | |
Type | 4-cycle, water-cooled, direct injection | |
Aspiration | Variable flow, turbocharged, air-to-air aftercooled | |
Number of cylinders | 4 | |
Bore x stroke | 3.75" x 4.52" | 95 mm x 115 mm |
Piston displacement | 199 in³ | 3.26 ltr |
Governor | All-speed, electronic | |
Horsepower: | ||
SAE J1995 - Gross | 91 HP | 68 kW |
ISO 9249 / SAE J1349 - Net | 89 HP | 66 kW |
Hydraulic fan at maximum speed - Net | 79 HP | 59 kW |
Rated rpm | 2200 rpm | |
Fan drive type | Hydraulic | |
Lubrication system: | ||
Method | Gear pump, force lubrication | |
Filter | Full-flow | |
*EPA Tier 4 Interim and EU stage 3B emissions certified |
Travel speed (quick shift mode)* | Forward | Reverse |
1st | 0–2.1 mph 0–3.4 km/h | 0–2.5 mph 0–4.1 km/h |
2nd | 0–3.5 mph 0–5.6 km/h | 0–4.0 mph 0–6.5 km/h |
3rd | 0–5.3 mph 0–8.5 km/h | 0–5.3 mph 0–8.5 km/h |
Travel speed (variable mode) | Forward | Reverse |
0–5.3 mph 0–8.5 km/h | 0–5.3 mph 0–8.5 km/h | |
*Quick shift speeds are adjustable in the monitor. |
Minimum turning radius* | 79" | 2.0 m |
*As measured by track marks on the ground at pivot turn. |
Minimum turning radius* | 79" | 2.0 m |
*As measured by track marks on the ground at pivot turn. |
Suspension | Rigid track frame | |
Track roller frame | Monocoque, large section, durable construction | |
Rollers and idlers | Lubricated track rollers | |
Lubricated tracks: | Unique seals minimize the entry of foreign abrasive material into pin to bushing clearances to provide extended service life. Track tension is easily adjusted with a grease gun. | |
Sealed and lubricated track | Track tension is easily adjusted with grease gun. | |
Tractor for inside mounted blade (PAT) | ||
Number of track rollers (each side) | 6 | |
Number of carrier rollers (each side) | 1 | |
Type of shoes (standard) | Single grouser | |
Number of shoes (each side) | 41 | |
Grouser height | 1.9" | 47 mm |
Shoe width (standard) | 18" | 460 mm |
Ground contact area | 3,180 in² | 20516 cm² |
Ground pressure (with standard shoe) | 5.88 psi | 0.41 kgf/cm² / 40.2 kPa |
Track gauge | 5'2" | 1570 mm |
Length of track on ground | 7'4" | 2230 mm |
Link pitch | 6.1" | 154 mm |
Coolant | 9.0 U.S. gal | 34 ltr |
Fuel tank | 50.2 U.S. gal | 190 ltr |
Engine oil | 2.9 U.S. gal | 11 ltr |
Hydraulic tank | 16.9 U.S. gal | 64 ltr |
Final drive (each side) | 0.9 U.S. gal | 3.5 ltr |
Tractor weight: Including ROPS cab, U frame for power angle tilt dozer, rated capacity of lubricant, coolant, full fuel tank, operator, and standard equipment. | 16,314 lb | 7400 kg |
Operating weight: Operating weight: Including power angle tilt dozer, ROPS cab, operator, standard equipment, rated capacity of lubricant, coolant, and full fuel tank. | 18,695 lb | 8480 kg |
Closed-center Load Sensing System (CLSS) designed for precise and responsive control, and for efficient simultaneous operation. | ||
Hydraulic control unit: | ||
All spool control valves externally mounted remote to the hydraulic tank. Piston-type hydraulic pump with capacity (discharge flow) of 99 ltr/min / 26 U.S. gal/min at rated engine rpm. | ||
Relief valve setting | 3,974 psi | 27.4 MPa / 280 kg/cm² |
Hydraulic cylinders | Double-acting, piston type | |
Number of cylinders: | Bore | Bore |
Blade lift / 2 | 3.0" | 75 mm |
Blade tilt / 1 | 3.5" | 90 mm |
Blade angle / 2 | 3.1" | 80 mm |
Hydraulic oil capacity (refilling): | ||
Power angle tilt dozer | 15.9 U.S. gal | 60 ltr |
Control valves: | ||
3-spool control valve for power angle tilt dozer. | ||
Positions: | ||
Blade lift | Raise, hold, lower, and float | |
Blade tilt | Right, hold, and left | |
Blade angle | Right, hold, and left | |
Additional control valve required for ripper. | ||
Positions: | ||
Ripper lift | Raise, hold and lower |
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