JBN SERIES External Valve Type
Upper side of housing cover is stronger than other hammers with additional steel bars.
Also, lower side of housing cover is reinforced for wear resistance.
Special Features
· Box typed housing design
· Soundproofing system for downtown area under construction · Polyurethane buffers reduces noise and absorbs vibration
· MC Nylon plates are designed for fit tight on surrounded four sides · Low recoil movements for operator’s safe condition
· High impact energy & Low noise level
· High performance ability & Low maintenance cost · Total 22 models of silenced type
· Option item : Auto lubricant system.
HEAVY WEIGHT BREAKERS External Valve type (With Accumulator) |
Description |
Model |
Unit |
JBN645 |
JBN745 |
JBN770 |
Operating |
Silenced |
Kg |
2,850 |
3,300 |
3,800 |
lb |
6,283 |
7,275 |
8,378 |
||
Weight (Tool + M / C) |
Open Top |
Kg |
2,950 |
3,400 |
3,900 |
lb |
6,504 |
7,496 |
8,598 |
||
Main Body Weight |
Kg |
1,250 |
1,260 |
1,690 |
|
Tool (Moil type) |
Weight |
Kg |
174 |
236 |
279 |
Diameter |
mm |
155 |
165 |
175 |
|
Operating Pressure (Breaker) |
bar |
150 ~ 190 |
160 ~ 190 |
160 ~ 200 |
|
psi |
2,134 ~ 2,702 |
2,276 ~ 2,702 |
2,276 ~ 2,845 |
||
Setting Pressure (Machine) |
bar |
240 |
240 |
250 |
|
psi |
3,480 |
3,480 |
3,625 |
||
Impact Rate |
bpm |
300 ~ 500 |
300 ~ 500 |
250 ~ 500 |
|
Accumulator Pressure (N2-Gas) |
bar / psi |
60 / 870 |
|||
Back Head Pressure (N2-Gas) |
bar / psi |
17 / 246 |
17 / 246 |
18 / 261 |
|
Required Oil Flow |
l / min |
180 ~ 250 |
180 ~ 250 |
210 ~ 280 |
|
g / min |
47.5 ~ 66 |
47.5 ~ 66 |
55 ~ 74 |
||
Suitable Excavator |
Min |
ton |
33 |
33 |
45 |
Max |
ton |
50 |
50 |
55 |
|
Suitable |
ton |
40 |
40 |
50 |
Description |
Model |
Unit |
JBN800 |
JBN900 |
JBN1000 |
Operating |
Silenced |
Kg |
4,400 |
6,300 |
10,500 |
lb |
9,700 |
13,889 |
23,149 |
||
Weight (Tool + M / C) |
Open Top |
Kg |
4,500 |
6,430 |
10,750 |
lb |
9,921 |
14,176 |
23,700 |
||
Main Body Weight |
Kg |
1,700 |
2,720 |
4,800 |
|
Tool (Moil type) |
Weight |
Kg |
326 |
415 |
470 |
Diameter |
mm |
190 |
208 |
230 |
|
Operating Pressure (Breaker) |
bar |
160 ~ 200 |
180 ~ 205 |
220 ~ 240 |
|
psi |
2,276 ~ 2,845 |
2,610 ~ 2,973 |
3,190 ~ 3,480 |
||
Setting Pressure (Machine) |
bar |
250 |
250 |
270 |
|
psi |
3,625 |
3,625 |
3,915 |
||
Impact Rate |
bpm |
250 ~ 500 |
170 ~ 220 |
140 ~ 170 |
|
Accumulator Pressure (N2-Gas) |
bar / psi |
60 / 870 |
|||
Back Head Pressure (N2-Gas) |
bar / psi |
18 / 261 |
18 / 261 |
18 / 261 |
|
Required Oil Flow |
l / min |
220 ~ 290 |
230 ~ 300 |
360 ~ 430 |
|
g / min |
58 ~ 76.5 |
61 ~ 79 |
95 ~ 114 |
||
Suitable Excavator |
Min |
ton |
45 |
55 |
70 |
Max |
ton |
70 |
100 |
150 |
|
Suitable |
ton |
55 |
70 |
100 |
Description |
Model |
Unit |
JBN645 |
JBN745 |
JBN770 |
JBN800 |
JBN900 |
JBN1000 |
Operating |
Silenced |
Kg |
2,850 |
3,300 |
3,800 |
4,400 |
6,300 |
10,500 |
lb |
6,283 |
7,275 |
8,378 |
9,700 |
13,889 |
23,149 |
||
Weight (Tool + M / C) |
Open Top |
Kg |
2,950 |
3,400 |
3,900 |
4,500 |
6,430 |
10,750 |
lb |
6,504 |
7,496 |
8,598 |
9,921 |
14,176 |
23,700 |
||
Main Body Weight |
Kg |
1,250 |
1,260 |
1,690 |
1,700 |
2,720 |
4,800 |
|
Tool (Moil type) |
Weight |
Kg |
174 |
236 |
279 |
326 |
415 |
470 |
Diameter |
mm |
155 |
165 |
175 |
190 |
208 |
230 |
|
Operating Pressure (Breaker) |
bar |
150 ~ 190 |
160 ~ 190 |
160 ~ 200 |
160 ~ 200 |
180 ~ 205 |
220 ~ 240 |
|
psi |
2,134 ~ 2,702 |
2,276 ~ 2,702 |
2,276 ~ 2,845 |
2,276 ~ 2,845 |
2,610 ~ 2,973 |
3,190 ~ 3,480 |
||
Setting Pressure (Machine) |
bar |
240 |
240 |
250 |
250 |
250 |
270 |
|
psi |
3,480 |
3,480 |
3,625 |
3,625 |
3,625 |
3,915 |
||
Impact Rate |
bpm |
300 ~ 500 |
300 ~ 500 |
250 ~ 500 |
250 ~ 500 |
170 ~ 220 |
140 ~ 170 |
|
Accumulator Pressure (N2-Gas) |
bar / psi |
60 / 870 |
||||||
Back Head Pressure (N2-Gas) |
bar / psi |
17 / 246 |
17 / 246 |
18 / 261 |
18 / 261 |
18 / 261 |
18 / 261 |
|
Required Oil Flow |
l / min |
180 ~ 250 |
180 ~ 250 |
210 ~ 280 |
220 ~ 290 |
230 ~ 300 |
360 ~ 430 |
|
g / min |
47.5 ~ 66 |
47.5 ~ 66 |
55 ~ 74 |
58 ~ 76.5 |
61 ~ 79 |
95 ~ 114 |
||
Suitable Excavator |
Min |
ton |
33 |
33 |
45 |
45 |
55 |
70 |
Max |
ton |
50 |
50 |
55 |
70 |
100 |
150 |
|
Suitable |
ton |
40 |
40 |
50 |
55 |
70 |
100 |
※ Above specifications are subject to change without prior notice for the improvement in quality.