High-pressure pipes

Flexible solutions to connect oil injection equipment

SKF High-pressure pipes can be used when SKF Oil injection equipment cannot be connected directly to a pressure joint. Typically they are used for non bearing applications where the oil injection pressure is in excess of 150 MPa (21 750psi). 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.

  • Flexible connection to non-bearing applications such as gear wheels, railway wheels and couplings.
  • All pipes are pressure tested during production
  • Special lengths up to 4 000 mm (157 in.) can be made on request *

Safety note

For safety reasons, these high–pressure pipes have a maximum service life. All SKF High-pressure pipes are hard–marked with the year in which their service life expires e.g. Do no use after 2023.

High pressure pipes are marked with their maximum working pressure of max 400 MPa (58 000psi)

Technical specifications
Maximum working pressure
400 MPa (58 000psi)
Test quantity
100%
Outer pipe diameter
6 mm (0.24 in.)
Inner pipe diameter
1,6 mm (0.06 in.)
Pipe minimum bending radius100 mm (4 in.)
Pipe lengths
See table below for standard lengths (L).
Lengths between 1000 mm (39 in.) and 4 000 mm (118 in.) can be made on request *

* High pressure pipes with special lengths are designated with an "S", for special length, and the length required in mm. for instance 227957 A/400MP with a length of 2500mm would have designation 227957 S/2500.

Technical data (metric)
Designation
Dimensions

G
G1
A
A1



mm
mm
227957 A/400MP
G 1/4
G 3/4
17,3
36,9
227958 A/400MP
G 3/4
G 3/4
36,9
36,9
1020612 A
G 1/4
G 1/4
17,3
17,3

Dw
Dw1
L
Weight

mm
mm
mm
kg
227957 A/400MP
11,1115,882.000
0,4
227958 A/MP400
15,8815,882.000
0,6
1020612 A
11,1111,11
1.000
0,5
High pressure pipe
Technical data (imperial)
Designation
Dimensions

G
G1
A
A1



in
in
227957 A/400MP
G 1/4
G 3/4
0.68
1.45
227958 A/400MP
G 3/4
G 3/4
1.45
1.45
1020612 A
G 1/4
G 1/4
0.68
0.68

Dw
Dw1
L
Weight

in
in
in
lb
227957 A/400MP
0.440.6378
0.9
227958 A/400MP
0.630.6378
1.3
1020612 A
0.44
0.44
39
1.1
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