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High pressure pipes
 

Maximum working pressure 300 MPa (43,500 psi)
 
The range of SKF high pressure pipes covers most applications where there is a requirement to transfer oil at high pressure. They consist of a steel pipe with a steel ball fitted to both ends. Two swivelling connection nipples press these balls against the seating of the connecting hole and thus sealing against oil leakage.    High pressure pipes
 
Wide range of pipes
All pipes are pressure tested to 100 MPa (14,500 psi) over recommended working pressure
Special lengths (up to 4 m / 157 in) made on request
400 MPa versions available
 
Safety note:
For safety reasons, these high–pressure pipes have a maximum recommended service life. All SKF high pressure pipes are hard–marked with the year in which their recommended service life expires; e.g. RECOMMENDED SERVICE LIFE EXPIRES 2010.
 
Technical specifications
Maximum working pressure 300 MPa (43,500 psi)
Test pressure 400 MPa (58,000 psi)
Test quantity 100%
Outer pipe diameter 4 mm (0.16 in)
Inner pipe diameter 2 mm (0.08 in)
Pipe lengths between 300 mm (12 in) and 4000 mm
(118 in) can be ordered
e.g. 227957A/3000 (3000 mm long)
 
Technical data
Designation Dimensions Weight
G1 G A A1 Dw Dw1 L
mm mm mm mm mm kg
721740 A G 3/4 G 1/8 11,5 36,9 7,94 15,88 1.000 0,3
227957 A G 3/4 G 1/4 17,3 36,9 11,11 15,88 2.000 0,4
227958 A G 3/4 G 3/4 36,9 36,9 15,88 15,88 2.000 0,6
1020612 A* G 1/4 G 1/4 17,3 17,3 11,11 11,11 1.000 0,5
728017 A G 1/4 G 1/4 17,3 17,3 11,11 7,94 300 0,2
727213 A** G 1/4 G 1/4 17,3 17,3 7,94 7,94 300 0,2
729123 A G 3/4 G 1/4 17,3 36,9 7,94 15,88 300 0,3
High pressure pipes
Designation Dimensions Weight
G1 G A A1 Dw Dw1 L
in in in in in lb
721740 A G 3/4 G 1/8 0.45 1.45 0.31 0.63 39 0.7
227957 A G 3/4 G 1/4 0.68 1.45 0.44 0.63 78 0.9
227958 A G 3/4 G 3/4 1.45 1.45 0.63 0.63 78 1.3
1020612 A* G 1/4 G 1/4 0.68 0.68 0.44 0.44 39 1.1
728017 A G 1/4 G 1/4 0.68 0.68 0.44 0.31 12 0.4
727213 A** G 1/4 G 1/4 0.68 0.68 0.31 0.31 12 0.4
729123 A G 3/4 G 1/4 0.68 1.45 0.31 0.63 12 0.7
* Maximum pressure 400 MPa (58,000 psi).
   Outer diameter of the pipe 6 mm (0.24 in).
** The high pressure pipe 727213 A is designed to fit small OK-couplings
    (OK 25-OK 75).  This pipe is not suitable for normal oil injection connection holes.
 
More information
Instructions for use
 
 
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