Main technical characteristic of hydraulic excavator NK650
○ Turbo-charged after-cooled diesel engine: environment protecting, power saving, its satisfied the emission of Europe Standard Grade.Ⅲ
○ Control with constant power of single pump, crossover power of two pumps for reasonably distributing and using the diesel 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 lubricating system to save daily lubrication
○Multi-function meters show automatic illumination and detection of the various pressure ,temperature and oil level to have sound-light alarm○Better reliability with Parker hose &seals and Trelleborg cylinder seals
○The Technique with disassembled undercarriage which is advanced to transport the machine quickly
○Cab 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.
|
Main Technology Data of Hydraulic Excavator NK650
No.
|
Item
|
Unit
|
Date
|
Face shovel
|
Backhoe
|
1
|
Machine weight
|
t
|
65
|
63
|
2
|
Bucket capacity
|
Standard
|
m 3
|
4.0
|
3.0
|
Range
|
m 3
|
3.5~5.0
|
2.7~4.0
|
3
|
Diesel engine
|
Model
|
|
M11-C330
|
Power /Speed
|
kW/rpm
|
246/2100
|
Fuel tank Capacity
|
L
|
726
|
4
|
Hydraulic system
|
Type
|
|
Crossing power variable system with two pumps and two loops
|
Max. pressure of main oil circuit
|
MPa
|
30
|
Max. flow of main oil circuit
|
L/min
|
2×400
|
Operating style
|
|
Pilot control
|
Hydraulic oil tank capacity
|
L
|
650
|
5
|
Performance
|
Swing speed
|
r/min
|
6.0
|
Travel speed
|
km/h
|
3.0
|
Max. pulling force
|
kN
|
460
|
Gradeability
|
%
|
70
|
Ground pressure
|
MPa
|
0.096
|
Circulating time of operation
|
s
|
24
|
6
|
Working date
|
Boom length
|
mm
|
4200
|
7100
|
Stick length
|
mm
|
2800
|
3000
|
Max. digging radius
|
mm
|
9061
|
11950
|
Max. digging depth
|
mm
|
3200
|
7704
|
Max. digging height
|
mm
|
9521
|
10542
|
Max. unloading height
|
mm
|
7911
|
7158
|
Max. digging force of stick
|
kN
|
174
|
174
|
Max. breakout force of bucket
|
kN
|
214
|
214
|
Main Components of Hydraulic Excavator NK650
No.
|
Component
|
Type
|
Manufacturer
|
1.1
|
Diesel engine
|
M11-C330
|
Cummins/ America
|
2
|
Main pump
|
A11VO190
|
Rexroth /Germany
|
3
|
Main Valve
|
8M8
|
Rexroth /Germany
|
4
|
Double join valves
|
MO/2MO
|
Rexroth /Germany
|
5
|
Swing motor
|
A2FE125
|
Rexroth /Germany
|
6
|
Swing reduction gear
|
GTB80
|
Rexroth /Germany
|
7
|
Travel motor
|
A2FE125
|
Rexroth /Germany
|
8
|
Travel reduction gear
|
GFT110
|
Rexroth /Germany
|
9
|
Armrest pilot valve
|
4TH6E
|
Rexroth /Germany
|
10
|
Foot pedal pilot valve
|
2TH6R
|
Rexroth /Germany
|
11
|
Logical valve
|
026710
|
Rexroth /Germany
|
12
|
Solenoid valve
|
4WE
|
Rexroth /Germany
|
13
|
Driver’s seat
|
DS-85H
|
Grammer
|
14
|
Hydraulic hose + System seal
|
|
Parker/ America
|
15
|
Cylinder seal
|
|
Trelleborg/ America
|
16
|
Automatic lubricating system
|
|
BEKA/ Germany or LINCOLN/America
|
17
|
Track assembly
|
|
ITM or Berco/ Italy
|
18
|
Air-condition system
|
|
Wuhan Jindong /China
|