Page 61 - 2010-2022 hose manufactureing ability and guide

Figure 5-10. Reusable hydraulic hose
couplings. Figure 5-12. Swaged-on Coupling

B. Push-on Couplings - This type of coupling B. Crimped-on Couplings - This type of
functions without the use of bands or coupling is applied by crimping or
sockets; however, it does require the use of compressing it radially by a number of
specially designed hose. The coupling fingers moving toward the hose axis. This
consists of a male serrated shank. The coupling attachment method is versatile
couplings are available in sizes 0.250 inches since crimped assemblies can be made with
(6.4 mm) through 0.750 inches (19 mm) low-pressure hose, as well as high-pressure
and are generally satisfactory for working hydraulic hose. See Figure 5-13.
pressures to 250 psi (1.75 MPa). See Figure
5-11.

Figure 5-13. Crimped-on Coupling

C. Internally Expanded Full Flow Couplings -
This type of coupling is used in applications
where full flow is required such as oil,
Figure 5-11. Installation of push-on type
couplings. gasoline, chemical, and food transfer hose.
The coupling is attached by passing an
expander through the I.D. of the shank. This
NON-REUSABLE COUPLINGS expands the shank, thus providing
compression of the hose wall to aid in
Generally, there are four types of non-
reusable couplings: swaged-on, crimped-on, coupling retention while achieving full flow
internally expanded, and built-in fittings. characteristics. See Figure 5-14.

A. Swaged-on Couplings - This type of
coupling is applied by using special
equipment to “swage” a ferule on to the
outside of the hose. “Swaging” is defined Figure 5-14. Internally Expanded Full
as squeezing the ferule by passing it
lengthwise into a split die. This type of
coupling is often used with thermoplastic
hose. See Figure 5-12.

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