D7E/D8E/D9E

MODEL

Unit

D7E

D8E

D9E

ENGINE

Model

CUMMINS NT855-C280S10

CUMMINS NTA855-C360S10

CUMMINS KTA19-C525

Type

4-stroke cycle, turbocharged, intercooled, in-line

4-stroke cycle, turbocharged, intercooled, in-line

4-stroke cycle, turbocharged, intercooled, in-line

Number of cylinders

6

6

6

Bore x stroke

mm

ø139.7 x 152.4

ø139.7 x 152.4

ø150 x 150

Piston displacement

l

14.01

14.01

15.9

Output Power

kW (hp)

180(245)

257(345)

310(420)

@ rpm

2000

2000

1900

Max torque

N⋅m@rpm

1030 @ 1250

1440 @ 1400

1900 @ 1400

Emission rating

Euro II

Euro II

Euro II

Fuel consumption

g/kW⋅h

205

245

214

TRANSMISSION

Torque converter

Power separating hydraulic-mechanic

Power separating hydraulic-mechanic

Power separating hydraulic-mechanic

Cooling system

Water-cooled

Water-cooled

Water-cooled

Transmission

Planetary power shift transmission with three speeds forward and three soeeds reverse

Planetary power shift transmission with three speeds forward and three soeeds reverse

Planetary power shift transmission with three speeds forward and three soeeds reverse

Central drive shaft

Spiral bevel gear, single-stage speed reductionsplash lubrication

Spiral bevel gear, single-stage speed reductionsplash lubrication

FINAL DRIVE

Final drive

Two-stage planetary reduction gear mechanism, splash lubrication.

Two-stage planetary reduction gear mechanism, splash lubrication.

Two-stage planetary reduction gear mechanism, splash lubrication.

UNDERCARRIAGE SYSTEM

Suspension

Triangle track. Elevated sprocket, Elastic suspended.

Triangle track. Elevated sprocket, Elastic suspended.

Triangle track. Elevated sprocket, Elastic suspended.

Number of carrier rollers (each side)

1

1

2

Number of track rollers (each side)

7

8

7

Number of idler (each side)

1

1

1

Number of track shoes (each side)

38

41

41

Track shoe type

Single grouser

Single grouser

Single grouser

Pitch

mm

216

216

260.3

Width

mm

560

560

610

Ground pressure

Mpa

0.072

0.105

0.123

Gradeability

°

30°

30°

30°

Min. turning radius

m

3.3

3.9

3.7

HYDRAULIC CONTROL SYSTEM

Maximum pressure

MPa

14

14

14

Type

Gear pump

Gear pump

Gear pump

Displacement

L/min

170

336

336

Control valve type

Spool valve (raise, hold, lower, float)

Spool valve (raise, hold, lower, float)

Spool valve (raise, hold, lower, float)

Hydraulic tank

Fully enclosed control valve and oil filter

Fully enclosed control valve and oil filter

Fully enclosed control valve and oil filter

Working cylinder inner diameter

mm

120 x 2

140 × 2

140 × 2

STEERING SYSTEM

Steering clutch

Hydraulic pressed, usually separated clutch

Hydraulic pressed, usually separated clutch

Hydraulic pressed, usually separated clutch

Steering brake

Pressed by spring, separated hydraulic, meshed type.

Pressed by spring, separated hydraulic, meshed type.

Pressed by spring, separated hydraulic, meshed type.

COOLANT AND LUBRICANT CAPACITY

Fuel tank

L

450

600

720

Hydraulic oil tank

L

110

164

205

WORKING EQUIPMENT AND ATTACHMENT

Straight-tilt dozer

Hydraulically-actuated with servo valve

Hydraulically-actuated with servo valve

Hydraulically-actuated with servo valve

Blade support

Brace type with tilt cylinder on the right side

Brace type with tilt cylinder on the right side

Brace type with tilt cylinder on the right side

Width

mm

3725

4130

4300

Height

mm

1315

1590

1875

Blade capacity

m³

7.5

10.8

16

Blade weight

kg

3680

4520

5200

OVERALL DIMENSIONS

L × W × H (standard machine)

mm

5677 × 3500 × 3402

7751 × 3940 × 3549

8478 X 4314 X 3970

L × W × H (with ripper attachment)

mm

7616 × 3500 × 3402

8650 × 3940 × 3549

9630 × 4314 × 3970

WEIGHT

Operating weight (with ripper)

kg

23800 (27250 )

38000 (41800 )

46300(52000)