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.
The Small Parts and Bearings has a much larger range of engineering supplies.
Hobby and Engineering Supplies lists a smaller range of products and only the most popular items in each range. They also list many additional hobby specific categories.
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
Registered Australian Company: Small Parts & Bearings Pty Ltd (ABN 79 121 865 414) - Trading as Bearing Shop Online
Bearing Shop Online offers 25889 products in 531 categories including ball bearings, roller bearings, thrust bearings, ceramic and ceramic hybrid bearings, stainless steel bearings, miniature bearings, linear bearings, shafting, corrosion resistant - 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.
Using the links throughout this site you will find extensive information including catalogues, technical data, and other product specific information. We sell our products worldwide through our online store and our overseas freight rates are competitive for fully traceable courier delivery.
Bearing Shop Online is part of MBA Group offering a select range from the MBA Group catalogue.
Bearing Shop Online products are not authorised for sale into the USA or Canada due to the reluctance of Australian insurers to provide product liability insurance into those two countries.
Information on this website is Copyright Bearing Shop Online 1997. All rights reserved.