NK165-II
NK165-II is a upgrade product of NK165-I bulldozer. It has characteristic of semi-rigid suspension, mechanical drive. The main clutch is hydraulic boosted. The articulated point of the implement cylinder is at both sides of the guard., With hydraulic pilot controlled , electric monitoring , good appearance, it can be used in road building , hydro-electric construction , field modification , port and mine development and
other construction .
Main specifications
| Overall dimensions | (L × W × H):5416 × 3297 × 3160 mm (straight); 5566 × 3726 × 3160 mm (angle) |
| Operation weight | 17.8t (straight); 18.2t (angle) |
| Flywheel power | 121kW |
| Max. drawbar pull | 139.6 kN （ straight ）； 142.7kN （ angle ）(The efficient force depends on weight and ground surface adherence) |
|
Ground pressure (atoperating weight) |
69KPa |
| Min. ground radium | 3.9 m |
| Min. ground clearance | 352.5 mm |
| Grade ability | traight 30 ° |
| Side 25 ° |
Diesel engine
| Manufactured factory | WEIFANG DIESEL ENGINE CO., LTD |
| Model | WD615T1-3B |
| Type | straight line, water-cooled, with four stroke, pressure boost and direct injection |
| Cylinders Number-bore diameter × travel distance | 6-126x 130mm |
| Displacement | 9.726 L |
| Rated RPM | 1800 r/min |
| Rated power | 130 kW |
| Max. torque | 870 N · m/1200-1300 rpm |
| Fuel consumption (at rated working condition) | 225 g /kW·h |
| Oil consumption | 1.8 g /kW·h |
| Admissible altitude | ≤ 4000m |
| Cooling method | closed circulation water cooled |
| Starting method | electrically starting at 24V pressure |
| Manufactured factory | SHANGHAI DIESEL ENGINE CO., LTD |
| Model | G128ZG8 |
| Type | straight line, water-cooled, with four stroke |
| Cylinders Number-bore diameter × travel distance | 6-135x 150mm |
| Displacement | 12.88 L |
| Rated RPM | 1800 r/min |
| Rated power | 130 kW |
| Max. Torque | 838 N · m/1260 rpm |
| Fuel consumption (at rated working condition) | 224 g /kW · h |
| oil consumption | 0.7 g /kW · h |
| Admissible altitude | ≤ 4000m |
| Cooling method | closed circulation water cooled |
| Starting method | electrically starting at 24V pressure |
Main clutch and transmission
The flywheel clutch is constantly disengaged with Muti-powder-metal discs, which is operated by hydraulically boosting.The transmission is mechanical double levels controlled with constantly meshed helical gears, and coupling sleeve shift. It has five speeds FORWARS and four speeds REVERSE.
Travel speed (in theory 1800r/min engine speed)
Forward Reverse
| Forward | Reverse | ||
| First speed | 2.5km/h | First speed | 3.5km/h |
| Second speed | 3.3km/h | Second speed | 4.6km/h |
| Third speed | 5.7km/h | Third speed | 7.9m /h |
| Forth speed | 7.5km/h | Forth speed | 10.5km/h |
| Fifth speed | 10.61km/h | ||
Steering and braking
The steering clutch is tighten by pressured springs and separated hydraulically with oil-type, multi-powder-metal discs.
The brakes are oil, two-direction floating band with mechanism foot pedals, hydraulic boosted. The steering and braking can be actuated in one control.
Final drive
The final drives are double reduction with spur gear and segment sprocket, which are sealed by floating oil seal for easy service.
Undercarriage system
Inner and outer beam of track roller frame are rectangular section " 八" frame .Track roller, carrier roller, idler are mounted with long life well sealed Duo-cone floating ring well sealed Duo-cone floating ring seal.
Track roller (each side):
| Singe flange | 4 |
| Double flange | 2 |
| Carrier roller (each side) | 2 |
| Idler (each side) | 1 |
| Type of track | single grouser combined |
| Tension mode of track | hydraulic |
| Pitch | 203mm |
| Number of shoes(each side) | 38 pieces |
| Width of shoe | 500mm |
| Length of track on ground | 2570mm |
Sealed and lubricated track
The pitch, numbers and width of track shoes are the same with the general track.
Implement hydraulic system
It consists of two group gear pump, pilot valve, main valve, cylinders, oil filter and lines.
| Pump type | two group gear oil pump |
| Pump flow | |
| Front pump:190L /min | Pilot pump:19L /min |
| System pressure | 12MPa |
Cab
The cab with adjustable seat features low noise and wide visible range and contains electrical fan.
This following different kinds of cabs as follow can be chosen:
•Cab with air-conditioner
•Cab with Rops
•Simple structure canopy
Service refill
| Fill location | Capacity (L) |
| Radiator and diesel engine water | 60 |
| Lubricating system of diesel engine Oil | 25 （G128）、20（WD615） |
| Flywheel house, main clutch oil | 35 |
| Transmission, bevel gear case Oil | 95 |
| Final drive (each side) Oil | 24 |
| Implement hydraulic system Oil | 80 |
| Fuel tank Oil | 285 |
| Idle track roller, carrier roller, front idler (each) Oil | 0.35 |
Blade specifications
| Blade | Angle | Straight | Coal pushing |
| Width | 3762mm | 3297 mm | 4240mm |
| Height | 1140mm | 1170 mm | 1150mm |
| Max digging depth | 400mm | 420mm | |
| Max. Ground clearance | 1000mm | 852mm | 1000mm |
| Vertical tilting angle | 9 ° | 8.5 ° | 9 ° |
Note: ▲ indicates optional parts
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