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Torlon - Materials - Technical
Hobby and Engineering Supplies

Torlon 4301

HES Products made from this material
Balls, High speed bearing cages

Torlon® 4301 extruded PAI is primarily used for wear and friction parts. It has a low expansion rate and coefficient of friction and it exhibits very little friction in use. A flexural modulus of 1,000,000 psi is higher than most other advanced engineering plastics. This grade excels in severe service wear applications such as non-lubricated bearings, balls and bearing cages.


Properties of Torlon 4301

Physical Properties
PROPERTY UNIT VALUE
Density g/cm3 1.45
Surface Hardness Rockwell E 70
Tensile Strength MPa 82
Flexural Modulus GPa 5.5
Notched Izod ft-lb/in 0.8
Linear Expansion per oC x 0.000009
Max Operating Temp. oC 260
Water Absorption % over 24 hrs 0.4
Flammability UL94 V-0
Volume Resistivity ohm.cm at 50% RH 1013
Dissipation Factor @ 1MHz 0.037
Dielectric Constant @ 1MHz 6.0
Heat Deflection Temp. @ 0.45 MPa oC 200
Heat Deflection Temp. @ 1.80 MPa oC 279

Chemical Resistance
Chemical Resistance
Acids (Concentrated) Good
Acids (Dilute) Good
Alkalis Poor-Fair

Note! Property values are typical and should be used only as a guide to selection of materials and not as purchase specifications.


Balls can be found here in the Hobby and Engineering Supplies balls online catalogue.

High speed bearings can be found here in the Hobby and Engineering Supplies High Speed Ball Bearings online catalogue.


You can find Torlon in the Hobby and Engineering Supplies Torlon Online Catalogue pages.


For a huge range of bearings online please visit the Bearing Shop Online Website.

The Small Parts and Bearings has a much larger range of engineering supplies.

For the best range of miniature and small bearings please try the Miniature Bearings Australia website. Miniature Bearings Australia also list a large variety of miniature engineering products.



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Hobby and Engineering Supplies offers 2322 products in 232 categories including spare parts for remote control cars, assortment kits, kites, styrene, depron, ceramic and ceramic hybrid bearings, bearings, tools, belts and adhesives - see the full listing in the Online Catalogue. We have excellent Freight Rates within Australia and worldwide. We offer a choice of delivery with a signature required, or cheaper options with no signature required. The no signature required options are at the customer’s risk once the goods leave our store.

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