Application; Description - SKF 721740 A Instrucciones De Uso

1. Application

High pressure pipes are used when an oil injector cannot be connected directly to a
pressure joint or when an adaptor block is needed to connect a pressure gauge.
The connection hole on the application side should be designed in accordance to the
details given below.
Thread Design
Ga
- -
M 4X0,5 A
M 6 A
G 1/8 A
G 1/4 A
G 3/8 B
G 1/2 B
G 3/4 B
1) Effective threaded length.
2) Minimum value which may be increased by 2 mm (0.08 in.) if material
thickness allows.
3) Minimum value 6 mm (0.24 in.).
G
a
α
N
a
Design A

2. Description

High pressure pipes consist of a hollow steel pipe with a steel ball itted in each end. Two
swivelling connection nipples press these balls against the seating of the connection holes.
SKF High Pressure Pipes
Angle Dimensions
∝
Gb Gb
degrees mm in.
60 5 0.20
60 10 0.39
60 12 2) 0.47
60 15 0.59
- 15 0.59
- 18 0.71
- 20 0.79
G
c
G
b
Design B
Gc 1) Gc 1) Na max. Na max.
mm in. mm
4 0.16 2
8 0.31 3
2) 10 2) 0.39 2) 3
12 0.47 5
12 0.47 8
14 0.55 8
16 0.63 8 3)
G
a
N
a
in.
0.08
0.12
0.12
0.20
0.31
0.31
0.31 3)
G
G
c
b
5