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Yantai Rocka Hydraulic Breaker SK-Box Silence Type

Silence type - Large Range


SPECIFICATION Unit SK20G SK81 SK100 SK121 SK131 SK141
Operating Weight kg
(lbs)		 1500 
(3300)		 1760 
(3880)		 2071
(4556)		 2635
(5797)		 2850
(6270)		 3990
(8787)
Overall Length mm
(in)		 2691 
(105)		 2828 
(111)		 3055 
(120)		 3255 
(127)		 3395
(133)		 3709
(145)
Oil Flow Requirement l/min
(gpm)		 130 ~ 150
(34.3 ~ 39.6)		 120 ~ 170
(31.7 ~ 44.9)		 170 ~ 240
(44.9 ~ 63.4)		 180 ~ 250
(47.5 ~ 66)		 200 ~ 250
(52.8 ~ 66)		 200 ~ 290
(52.8 ~ 76.5)
Operating Pressure bar/
(psi)		 160 ~ 180
(2133 ~ 2417)		 160 ~ 180
(2275 ~ 2560)		 160 ~ 180
(2275 ~ 2560)		 160 ~ 180
(2275 ~ 2560)		 170 ~ 190
(2417 ~ 2702)		 160 ~ 180
(2275 ~ 2560)
Accumulator
Pressure		 bar/
(psi)		 55 ~ 60
(782 ~ 853)		 55 ~ 60
(782 ~ 853)		 55 ~ 60
(782 ~ 853)		 55 ~ 60
(782 ~ 853)		 55 ~ 60
(782 ~ 853)		 55 ~ 60
(782 ~ 853)
Back-Head
Pressure		 bar/
(psi)		 16.5
(235)		 16.5
(235)		 16.5
(235))		 16.5
(235)		 16.5
(235)		 16.5
(235)
Blows Per Minute bpm 300 ~ 600 300 ~ 500 300 ~ 450 300 ~ 450 250 ~ 400 250 ~ 400
Tool (Chisel) Diameter mm
(in)		 135 
(5.3)		 140 
(5.49)		 150 
(5.88)		 155 
(6.07)		 165
(6.47)		 175
(6.86)
Hose Diameter in 1 1 1 1-1/4 1-1/4 1-1/4
Impact Energy Class joule 3288 4270 5694 7117 9965 12812
Applicable
Excavator

ton

 18 ~ 23 18 ~ 26 25 ~ 30 28 ~ 35 30 ~ 30 40 ~ 55
* Specifications of Rockage hydraulic tools are subject to change without notice.

 

 

Silence type - Medium Range


SPECIFICATION Unit SK43 SK45 SK50
Operating Weight kg
(lbs)		 375
(826)		 580 
(1278)		 857 
(1885)
Overall Length mm
(in)		 1860
(73)		 2100
(82)		 2336 
(91)
Oil Flow Requirement l/min
(gpm)		 50 ~ 90
(13.1 ~ 23.6)		 60 ~ 100
(15.8 ~ 26.3)		 80 ~ 110
(21.1 ~ 29.1
Operating Pressure bar/
(psi)		 120 ~ 150
(1706 ~ 2133)		 130 ~ 150
(1849 ~ 2133)		 140 ~ 160
(1991 ~ 2275
Back-Head
Pressure		 bar/
(psi)		 16.5
(235)		 16.5
(235)		 16.5
(235)
Blows Per Minute bpm 400 ~ 950 400 ~ 950 350~700
Tool (Chisel) Diameter mm
(in)		 75
(2.95)		 85
(3.34)		 100 
(3.94)
Hose Diameter in 1/2 3/4 3/4
Impact Energy Class joule 1158 1423 2135
Applicable
Excavator		 ton 6.0 ~ 9.0 7.0 ~ 14 11~16
* Specifications of Rockage hydraulic tools are subject to change without notice.

 

 

Silence type - Small Range


SPECIFICATION Unit SK20 SK30 SK40
Operating Weight kg
(lbs)		 126
(277)		 152 
(334)		 295 
(649)
Overall Length mm
(in)		 1262 
(49)		 1342 
(53)		 1600 
(63)
Oil Flow Requirement l/min
(gpm)		 20 ~ 40
(5.25 ~ 10.5)		 30 ~ 50
(7.9 ~ 13.2)		 40 ~ 90
(10.5 ~ 23.8)
Operating Pressure bar/
(psi)		 90 ~ 120
(1280 ~ 1706)		 90 ~ 120
(1280 ~ 1706)		 110 ~ 140
(1564 ~ 1990)
Back-Head
Pressure		 bar/
(psi)		 16.5
(235)		 16.5
(235)		 16.5
(235)
Blows Per Minute bpm 700 ~ 1200 600 ~ 1100 500 ~ 900
Tool (Chisel) Diameter mm
(in)		 45 
(1.77)		 53
(2.09)		 68
(2.68)
Hose Diameter in 1/2 1/2 1/2
Impact Energy Class joule 284 427 711
Applicable
Excavator?		 ton 1.3 ~ 3.0 2.5 ~ 4.5 4.0 ~ 7.0
* Specifications of Rockage hydraulic tools are subject to change without notice.
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