URAWA INDUSTRY
MATSUI UNIVERSAL JOINT CORP.
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Why URW?
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For Motor Race
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WHY URW?
1. Integrated Production
Matsui Universal Joint Corp. has been using " Integrated Production System " for long time. This production system means almost all producton process is in house, from the materials to finished products. Matsui has the following in-house facilities, die-making, forging, machining, heat treatment, finishing and assemblying. This system keeps the products high quality and reliability. This system makes developing time and the initial lead time shorter than the others.
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2.Material
The photos are the sectional view of our material for CV Joint. The structure is quite fine and no impurity.
High quality material is required for CV Joint and make sure the long life.
URW
Material includes impurity
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3.Heart Treatment
Heat Treatment is quite important process to keep the performance. Our way is carburising heat treatment same as Toyota. The surface hardness treated by curbarising is harder than the other way, like Induction Hardening.
Most of the CV Joint manufacturers in after market can not use carburising, as it need big facility.
Harder surface ensures longer CV Joint life.
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4.Test Machine

Matsui has the various test machines to check and test the performance and duarability of the goods. URAWA is always using such test data to keep the quality and to develop the new CV Joints. Most of the other manufacturers in after market do not have such facility, and they can only copy the CV Joint.

Test machines : Wear Test, Environment Test, Torsional Fatigue Test, etc.

TEST MACHINE TEST MACHINE TEST MACHINE TEST MACHINE
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5. Component Parts
1. Housing  
As ball makes frictional movement inside CV joint, smooth surface must be required for ball groove. As you see the photo, URW CV joint has a smooth and beautiful surface. Ball Groove
2. Inner Race  
Same as ball groove of housing, smooth surface must be required inner race groove as the ball always contacts with both the grooves of an inner race and a housing. As you see the photo, the inner race of URW CV Joint has a amooth and beautiful surface. Inner Race
3. Cage  
Surface is chemically treated to make durability longer. CAGE
4. Rubber Boot  
The most popular cause of CV Joint damage is breaking the boot. After breaking the boot, grease will come out and CV Joint will be damaged soon. So it is very important to use the good quality boot. URW puts the boot 100 % made in Japan, which is quite tough. BOOT
5.  Nut  
Only quality nut is applid to URW CV joint.
Most of them are supplied by OE manufacturer.
NUT
6.  ABS Sensor Ring  
URW supplies CV Joint with a new ABS sensor ring, if the original one has an ABS sensor ring. ABS sensor ring must be fixed tightly to activate ABS system properly. It is not easy to fix the old ring tightly again.
There is no need to remove the old ring and fix it again, if you choose URW CV Joint.
ABS RING
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