JBN SERIES External Valve Type

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.

  • JBN645
  • JBN745
  • JBN770
  • JBN800
  • JBN900
  • JBN1000

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

  • JBN800
  • JBN900
  • JBN1000

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.