PPS (polyphenylene sulfide) | Plastic Ball Bearings all Made in Japan Kashima Bearings, Inc. Japan

PPS (polyphenylene sulfide)

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Characteristics of PPS (polyphenylene sulfide)1 Characteristics of PPS (polyphenylene sulfide)2 Characteristics of PPS (polyphenylene sulfide)3

PPS is a material with unique features which make it fairly popular for plastic bearings.

(See tables below.)

Overview of PPS

PPS (polyphenylene sulfide) is a crystalline, high-performance plastic used extensively in engineering. It consists of a benzene ring from the Phenyl group (PP), alternating repeatedly with a sulfur molecule (S).

Enjoying excellent heat resistance, it can be used for quite a long time in high temperatures. With excellent chemical-resistance up to 200℃, it will not dissolve in oil, fat, or other solvent.

Other strengths include flame-retardancy and tensile-strength. Plus, there is high dimensional stability and low amounts of shrinkage at the time of molding,

However, the qualities also result in some weaknesses: less toughness (weak under impact) and poor weather-resistance. At the time of molding, the Barie amount will be prominently noted.

※ Weather-resistance refers to a property of plastics, paints, etc. that prevents or reduces deformation, discoloration, et al. when used outdoors.

Features of PPS

Highly Recommended   Recommended
Not Recommended  × Do Not Use

Material Call
symbol
Dry Irregular
moisture
In water /
In sea-water
Vapor Chemical Non-
magnetic
Insulating
Acid Alkali Organic
solvent
Oil
PPS PS
PSG ×

NOTE: For chemicals, please consult us regarding the type and concentration, etc. of such.

Temperature Resistance of PPS

Best Recommended   Highly Recommended   Recommended 
Not Recommended  × Do Not Use

Material Call
symbol
Temperature
-190℃~ -100℃~ -50℃~ -20℃~ Room
temperature
~60℃
~120℃ ~200℃ ~350℃
PPS PS × × × ×
PSG × × × ×

NOTE: the shape of the bearing will change due to such temperatures.

For more information about tolerances and other issues, download a catalogue from here.

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