○ Three phase-asynchronous electromotor, the only technology in China for hydraulic material handler powered by electricity, it is of benefit to environment protecting, power saving, easy service & maintenance, and low operating cost.
○ New dual electric brush and collector ring bring longer lifetime.
○ Control of constant power of single pump, limited power of three pumps for reasonable distribution of power
○ Starting with zero displacement so as to reduce the moment of resistance at starting
○ T echnique with pressure cut to protect hydraulic system and reduce the system heat
○ Secondary overloading for swing and normal closed brake for swing and travel ensure smoothly brake
○ Integrated oil& water cooler with compact conformation
○ The working attachment realized automatic level crowding with bucket to increase the bucket filling factor
○ Attachment designed by CAD, case shape and casting-welding structure realizing the high strength
○ Automatic central lubrication two pumps of system by control of micro-electronics to save daily lubrication
○ Better reliability with Parker hose &seals and Trelleborg cylinder seals
○ The Technique with disassembled undercarriage which is advanced to transport the machine quickly
○ Cab with fixed elevation and integrated is provided with large tri-dimensional ventilation, fresh air circulation, large capacity air condition without fluorine
○ The operator’s cab with the wide vision field and the streamlined appearance, matching the decoration and function with human nature, and offering the working environment in a car.

No.

Item

Unit

Date

Face shovel

Backhoe

1

Machine weight

t

75

73

2

Bucket capacity

Standard

m 3

4.5

3.5

Range

m 3

4.0~5.5

2.3~5.0

3

Electromotor

Model

YJK3555-4

Power /Speed

kW/rpm

280/1485

Voltage

V

6000

4

Hydraulic system

Type

Three pumps and three loops, limit load variable system

Max. pressure of main oil circuit

MPa

32

Max. flow of main oil circuit

L/min

2×415

Swing type

Independence open type

Flow of swing oil

1×415

Operating style

Pilot control

Hydraulic oil tank capacity

L

780

5

Performance

Swing speed

r/min

6.0

Travel speed

km/h

3.1

Max. pulling force

kN

457

Gradeability

%

70

Ground pressure

MPa

0.097

Circulating time of operation

s

20

6

Working date

Boom length

mm

4450

7000

Stick length

mm

2900

3400

Max. digging radius

mm

9280

12290

Max. digging depth

mm

2680

7741 

Max. digging height

mm

9745

10286 

Max. unloading height

mm

7680

7340 

Max. digging force of stick

kN

334

233 

Max. breakout force of bucket

kN

357 

285 

No.

Component Name

Model

Manufacturer

1

Or Electromotor

YJK3555-4

Lanzhou Electromotor/China

2

Main pump

2×A11VO190+1×A11VO190LR/11R

Rexroth/Germany

3

Main valve

8M8-32+M032

Rexroth/Germany

4

Double join valves

MO/2MO

Rexroth/Germany

5

Swing motor

A2FE125/61W

Rexroth/Germany

6

Swing reduction gear

GFB80T3B

Rexroth/Germany

7

Travel motor

A2FE125/61W

Rexroth/Germany

8

Travel reduction gear

GFT110T3

Rexroth/Germany

9

Logical valve

026710

Rexroth/Germany

10

Isolating valve

MH3WA06CG

Rexroth/Germany

11

Isolating valve

MH3WA06UG

Rexroth/Germany

12

Solenoid valve

4WE6C6X

Rexroth/Germany

13

Solenoid proportional

pressure-reducing valve

MHFP04G1

Rexroth/Germany

14

Armrest Pilot Valves

4TH6E70

Rexroth/Germany

15

Foot pedal pilot valves

2TH6NRP70

Rexroth/Germany

16

Foot pedal pilot valves for opening or closing bucket

2TH7Q06

Rexroth/Germany

17

Track Ass.

J01083DOM

ITM or Berco/Italy

18

Driver’s Seat

DS-85H

Grammer/China

19

Hydraulic hose + System seal

Parker/America

20

Cylinder seal

Trelleborg/America

21

Automatic lubricating system

BEKA/Germany or LINCOLN/America

22

Air-condition

Wuhan Jingdong/China

TThe hydraulic excavator CED750-7, which are based on design platform of the international cooperation and global purchasing of components, adopt the latest technology in the world to meet customer’s desire for best performance. Bonny machines have a streamlined appearance which are accepted by international customers, perfect performance, powerful digging force, high productivity and loading efficiency at low operation cost, more availability and long operation life. The powerful earth-moving excavators are applicable to the task of digging of soil gradeⅠ~ Ⅳ , and loading of exploded rocks, such as road construction, municipal project, water power plant, handling of slag, etc.; The powerful mining excavators are suitable for different mines such as non-ferrous metal mine, building material mine, phosphate ore, strip mine and other stripping &loading operation in water power plant.

The hydraulic excavator CED750-7 has combined electric-hydraulic technology successfully, it is the exclusive technology of Bonny. The operation cost is only 50-70% of that for excavator powered by diesel engine. So it is very applicable to the task of the exploiting and loading in all classes of mine, water and electricity construction on the site with convenience electric power.