PP (polypropylene)

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Characteristics of PP (polypropylene)1 Characteristics of PP (polypropylene)2

PP is a material with special features which make it quite popular for plastic bearings. 

(See tables below.)

Overview of PP

PP (polypropylene) is the abbreviation of polypropylene. This is a plastic obtained by polymerizing propylene.

This material offers an especially strong feature: low specific gravity, so low that it can float in water. However, it has poor dyeing qualities, and it cannot resist high temperatures.

Features of PP

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
PP PP

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

Temperature Resistance of PP

Best Recommended   Highly Recommended   Recommended 
Not Recommended  × Do Not Use

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

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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