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Parker Hannifin Corporation
Tube Fittings Division
Columbus, Ohio
EO and EO-2 Metric Bite Type Fittings
Catalog 4300
The stop edge causes a sharp increase in tightening forces
which is clearly perceptible. After assembly, a visible collar of
cut tube material must completely fill the space in front of the
first cutting edge. With stainless steel tube and hose connec-
tions made from free cutting steel, the collar is less due to the
harder material.
During assembly, it is absolutely essential that the tube is held
firmly against the stop in the inner cone of the fitting; if not, the
cutting process will not take place satisfactorily. Reassembly
can be performed an unlimited number of times.
Assembly and Installation
Please refer t
or the assembly and installation in-
structions for EO and EO-2 Metric Bite type fittings.
Weld Nipples
EO weld nipple fittings with an O-ring seal between weld nipple
andbodygive impressivepull out resistanceandsealing integrity,
and a sensible alternative to the progressive ring.Fittings bodies
and nuts are fully interchangeable for weld nipple and progres-
sive ring fittings of the same series and tube outside diameter.
Weld nipples SKA conform to DIN 3865 form A, which today is
represented by international standard ISO 8434-4.
Ball Bearing Rotary Fittings
DGBallBearingRotaryFittings:
Thesecompact,maintenance-
free construction, service proven fittings combine ball and plain
bearings with constant lubrication and relatively wear resistant
annular piston seals. They are rated for working pressures up
to 250 bar, have a low starting torque and have a suitable pres-
sure/RPM rate.
Ball bearing rotary fittings are designed for connecting a fixed
point to a rotating, swiveling or moving machine part via tubing
or hoses.Thus axial torsion of tubing or hoses can be prevented.
They are suitable for hydrualic oils and lubricants of mineral
oil base, not suitable for water or gases. Nominal temperature
range is -35°C to +80°C.
Fitting Instructions:
The life of rotary fitting depends considerably in a stress-free line
connection. Therefore, the direct connection with tube is to be
avoided. For connection to hoses the use of swivel nut fittings is
recommended with short, straight lines (approx. length 5x hose
O.D.). Thus shocks and vibrations can be absorbed.
Assemble tube ends in accordance with the Tube End Assembly
Informationo
ssembleBSPPandmetric
stud ends in accordance with torque values o
Plain Bearing Rotary Fittings
Plain Bearing Rotary Fittings:
These compact, maintenance-
freeconstruction, serviceprovenfittingsare rated for lowpressure
tube and hose with slow rotating, swiveling or moving machine
parts up to 64 bar (L series) and 160 bar (S series).
Plain bearing rotary fittings are designed for connecting a fixed
point to a rotating, swiveling or moving machine part via tubing
or hoses.Thus axial torsion of tubing or hoses can be prevented.
They are suitable for hydraulic oils and lubricants of mineral
oil base, not suitable for water or gases. Nominal temperature
range is -35°C to +100°C.
Series L
Tube O.D.
6 8 10 12 15 18 22 28 35
Permissible
RPM
28 28 21 17 13 10 10
7 7
Series S
Tube O.D.
6 8 10 12 14 16 20 25 30 38
Permissible
RPM
11 11 9 7
5 5
4
4 3 3
Table F2 — Plain Bearing Recommended RPM
1500 750 400
200
85
0.08
800 400 200
100
45
0.24
300 150
75
38
15
0.8
200 100
50
25
10
2.0
Permissible number of revolutions (rpm)
Tube Nominal
under a working pressure** of:
Torque at
O.D. bore (mm) 25 bar
64 bar 100 bar 160 bar 250 bar 250 bar/Nm
6
4
8
6
12
10
16
13
20
16
25
20
30
25
38
30
Table F1 — Ball Bearing Recommended RPM and Starting
Torques
**A minimum working pressure of 10 bar is necessary.
Fig. F2 — How EO fittings work
Stop edge (collar)
Second bite edge
Front bite edge
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