Acetal - Materials - Technical
BSO Products made from this material
Balls, Bearings, Bushes, Gears, Rod, Sheet
Also known as polyoxymethylene (POM). Acetal is a widely used rigid engineering plastic. It is highly resistant to fatigue and cracking and resistant to many solvents. It has a low coefficient of friction and remains stable in reasonably high temperatures, making it an excellent choice for bushes and bearings.
Properties of Acetal
|PROPERTY||UNIT||ACETAL||TEST METHOD||ACETRON||TEST METHOD|
|Elongation (break)||%||>30||DIN53455||20-30||D638 (71oC)|
|Modulus of Elasticity||N/mm2||3000||DIN53457||2450||D638 (23oC)|
|Impact Strength||KJ/m2||no break||DIN53453||63-84||D1822 (23oC)|
|Coefficient of friction||0.32||0.19|
|Water Absorption||%||0.25||20oC/60RH||0.14-0.21||D570 (24hr)|
|oC||-40 to + 100||-40 to + 82|
|Flammability||Slow Burning||UL||Slow Burning||UL|
Note! Property values are typical and should be used only as a guide to selection of materials and not as purchase specifications.
Comparison: Wear Rate, Coefficient of Friction and Limiting PV data
PV factor is used to express limiting conditions for the operation of plain bearings. P=load (psi). V=surface velocity (fpm).
K factor is a wear factor in.3-min/ft-lb-h
|Comparative Wear Rate to Acetron NS||Coefficient
|DELRIN® Acetal Resin
|DELRIN® Acetal Resin
DELRIN®is a registered trademark of DuPont.
Acetron NS is a patented acetal-based compound containing special solid lubricants which help provide superior performance in bearing applications. Acetron NS provides high Pressure Velocity (PV) capabilities, a low coefficient of friction and an extremely good "k" factor.
You can find acetal in the Bearing Shop Online Acetal Online Catalogue pages.
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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.
Extra information for Technical - Materials
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