China Office
Yantai Rocka Machinery Co., Ltd

Add : No.4 Dongxing Rd, Dongting Industrial Park, Fushan District, Yantai, Shandong, China 265500
Tel : +86 18053591623
info@rockageattachments.com
Department For International Trade
Yantai Rocka Trading Co., Ltd

Add : No.4 Dongxing Rd, Dongting Industrial Park, Fushan District, Yantai, Shandong, China 265500
Tel : +86 18053581623
sales@rockageattachments.com
Southeast Asia Office
Add : BLK463 Woodlands ST41 Singapore
Tel : +65 90079676
sales@rockageattachments.com
Myanmar Office
Add : Hospital St, Phetye City , Ayeyarwady Division, Myanmar
Tel : +95 926 0866616
sales@rockageattachments.com
American , Australia and Canada office
Tel : +86 18053581623
sales@rockageattachments.com
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YanTai Rockage Hydraulic Breaker SK-Top Type

From the best power to the economic satisfaction with exceptional performance -
Demonstrates the true value in treating from road-construction to a mine field.
- Dual speed impact frequency allows the hammer speed to be adjusted for maximum productivity.
- Low operating pressure, minimum oil requirements.
- More powerful and durable structure. 
- High power combined by Hydraulic pressure and Nitrogen gas.

 

Top type - Large Range


SPECIFICATION Unit SK20G SK81 SK100 SK121 SK131 SK141
Operating Weight kg
(lbs)
1450 
(3190)
1760 
(3880)
2100
(4620)
2490
(5478)
3100
(6834)
3909
(8615)
Overall Length mm
(in)
2691 
(105)
2796 
(110)
3215 
(127)
3297 
(130)
3300
(130)
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

 

Top type - Medium Range


SPECIFICATION Unit SK43 SK45 SK50
Operating Weight kg
(lbs)
375
(826)
580 
(1278)
868 
(1914)
Overall Length mm
(in)
1719
(68)
2096
(82)
2326 
(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.

 

 

Top type - Small Range


SPECIFICATION Unit SK20 SK30 SK40
Operating Weight kg
(lbs)
92 
(202)
150 
(330)
279 
(614)
Overall Length mm
(in)
1262 
(50)
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.