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 Rocka Hydraulic Breaker Cell For Postdrivers

From the best power to the economic satisfaction with exceptional performance -
Demonstrates the true value in treating from fenceing 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.

 

Postdriver - Large Range


SPECIFICATION Unit SK43 SK45 SK50
Operating Weight kg
(lbs)
190
(418)
250
(550)
425
(935)
Overall Length mm
(in)
1719
(68)
2096
(82)
2340 
(92)
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
* Specifications of Rockage hydraulic tools are subject to change without notice.

 

 

Postdriver - Small Range


SPECIFICATION Unit SK20 SK30 SK40
Operating Weight kg
(lbs)
65 
(143)
73
(160)
142
(312)
Overall Length mm
(in)
1190 
(44)
1604 
(63)
1788 
(70)
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
* Specifications of Rockage hydraulic tools are subject to change without notice.