J3
Parker Hannifin Corporation
Tube Fittings Division
Columbus, Ohio
http://www.parker.com/tfd
4300
Catalog
Komatsu
®
Style Adapters
Dimensions and pressures for reference only, subject to change.
Komatsu Style Adapters
The30° flare,metric thread interface, also knownas theKomatsu
style flare fitting, is one of the most common specialized OEM
mobile equipment fittings in the marketplace. Parker offers a
line of caps, plugs and conversion adapters to mate with this
specialty connection. Parker’s line of products is designated as
“
KA” adapters.
TheKomatsu style connection is generally rated at 4000 psi (280
kg/cm
2
or 27.5Mpa).Parker’s caps, plugs and conversion adapt-
ers are rated at the full pressure rating in sizes 4-16, with slight
pressure reductions in the less common sizes of -20 and -24.
Parker’s offering of Komatsu style adapters allow for more af-
termarket flexibility. Parker’s caps and plugs enable technicians
to protect critical sealing surfaces of hoses and adapters from
damage and contamination. This protection is important during
testing, repair and/or implement installation and removal.
Parker’s line of Komatsu style conversion adapters are ideal
for emergency situations, field repair, or “plumbing in” hydraulic
attachments and options. Parker’s exclusive swivel nut design
minimizes the sealing surface damage to mating components.
Design and Construction
Parker’s line of Komatsu style fitting is sold only as a hose
adapter and thus tube nuts and sleeves are not available. The
adapter consists of a single body.The mating hose swivel mates
directly to the 30° nose of the adapter, as shown in Fig. J1. This
simple, metal-to-metal connection provides a very effective seal
between the fitting nose and the hose swivel seat.
The Komatsu style adapter offers the traditional advantages of
the 37° flare fitting but incorporates the following differences:
1) 30
° nose flare
2)
Metric threads with 1.5 mm pitch
3)
Used only as a hose adapter
4)
Heavy duty crimp nut for higher assembly torques
Due to the prevalent field repair needs of mobile equipment
and relative simplicity of the Komatsu style fitting, several
manufacturers offer a similar product line. Even though some
manufacturers conform to the same dimensional standards,
there are significant performance advantages to Parker’s prod-
uct offering due to higher integrity manufacturing methods and
Parker’s commitment to quality.
Fig. J1 – Cutaway of Komatsu Style Adapter
Product Specifications
Komatsu style fittings are offered in eight common sizes. See
Table J1 below, which shows the Komatsu nominal size and
the equivalent Parker TFD Dash Size. The table also shows
the equivalent Parker Hose Products / Parflex Division mating
hose series.
Reference Locations
Dynamic Pressure Ratings:
Please refer to the last column
of the part number tables located on the following pages of this
section for the appropriate dynamic pressure ratings.
Standard Material Specifications:
Please refer to
Table U1
located in the
Appendix Section.
Table J1 – Parker equivalent dash sizes and mating
hose series for Komatsu Style Fittings
Komatsu
Nominal
Size
Parker TFD
Equivalent
Dash Size
Komatsu
Thread
Parker Hose
Fitting Mating
Series
02
-4
M14 x 1.5
MU
03
-6
M18 x 1.5
MU
04
-8
M22 x 1.5
MU
05
-10
M24 x 1.5
XU
06
-12
M30 x 1.5
XU
10
-16
M33 x 1.5
XU
12
-20
M36 x 1.5
XU
14
-24
M42 x 1.5
XU
link