SD7N Bulldozer

● Description

SD7N bulldozer is 230 horsepower track-type dozer with elevated sprocket, power shift drive, semi-rigid suspended and hydraulic controls.

SD7-230 horsepower, elevated sprocket bulldozer integrate with modular design is easy to repair & maintenance, It relieves oil with difference pressure, the hydraulic system performs protecting environment and save energy with high working efficiency. Safety comfortable operation condition, electric monitoring and ROPS cabin with reliable entire quality, excellent service is your wise choosing.

It can be equipped with straight tilting blade, angle blade, coal pushing blade, U shape blade; single shank ripper, three shanks ripper; ROPS, FOPS, forest defence cabin etc.. It is can ideal machine used in communication, oil field, power, mining etc. large earth moving program.

● Main specifications

Dozer: Tilt

Operation weight (including ripper) (Kg): 23800

Ground pressure(including ripper) (KPa): 71.9

Track gauge(mm): 1980

Gradient: 30/25

Min. ground clearance (mm): 404

Dozing capacity (m): 8.4

Blade width (mm): 3500

Max. digging depth (mm): 498

Overall dimensions (mm): 567735003402

Engine

Type: CUMMINS NTA855-C280S10

Rated revolution (rpm): 2100

Flywheel power (KW/HP): 169/230

Max. torque (Nm/rpm): 1097/1500

Rated fuel consumption(g/KWh): 235

Undercarriage system                        

Type: The track is triangle shape. 

The sprocket is elevated elastic suspended:  7

Number of track rollers (each side): 7

Pitch (mm): 216

Width of shoe (mm): 530

Gear           1st     2nd     3rd                                            

Forward  (Km/h)       0-3.9          0-6.5           0-10.9

Backward (Km/h)       0-4.8          0-8.2          0-13.2  

Implement hydraulic system

Max. system pressure (MPa): 18.6

Pump type: Gears oil pump

System outputL/min: 194

Driving system

Torque converter: Torque converter is power separating hydraulic-mechanic type

Transmission: Planetary, power shift transmission with three speeds forward and three speeds reverse, speed and direction can be quickly shifted.

Steering clutch: The steering clutch is hydraulic pressed, usually separated clutch. 

Braking clutch: The braking clutch is pressed by spring, separated hydraulic, meshed type. 

Final drive: The final drive is two-stage planetary reduction gear mechanism, splash lubrication.