finishing.com -- The Home Page of the Finishing Industry

HomeFAQsSuggested
Books
Help
Wanteds
Advertise
on this site
FORUM
current topics
Live! From Pine Beach NJ: The world's most popular metal finishing website, and the internet's friendliest corner

topic 17251

Coefficient of friction for rubber conveyor belt against steel idlers


2002

Q. Can anyone tell me what the coefficient of friction is between rubber and steel, where the rubber is the surface of a steel core conveyor belt and the steel is the roll face surface of a conveyor idler?

Robert E [last name deleted for privacy by Editor]
- South Africa


September 20, 2012

A. Exact figures depend on the type of rubber and temperature, also, the steel finish - obviously if well used it will be "worn in" or "smooth".

Dry and 20 to 50 °C it will be 0.5 to 0.6.

Dry and cold it will be lower by a near linear factor depending on temperature -- colder = lower COF. At most 20% less.

Wet - water and certain liquids are often part of the system in conveying units due to local conditions - anti dust wetting or process chemicals.

The liquid generally acts as a lubricant and makes the steel more slippery down to about below 0.2 on rubber.

Actually as long as the bearings are fine on the idler you want grip as it gives you better support. When the bearings get fouled up you would want a very low COF so the belt slides and does not get damaged or impart heat into the steel idler.

This whole discussion is the subject of tribology -- for more info, tribologists can help.

Hope that helps!

Wilbur Cook
- Johannesburg, Transvaal, South Africa



If you have a question in mind which seems off topic, please Search the Site

ADD a Q, A, or Comment on THIS topic START an UNRELATED topicView CURRENT HOT TOPICS

Disclaimer: It's not possible to diagnose a finishing problem or the hazards of an operation via these pages. All information presented is for general reference and does not represent a professional opinion nor the policy of an author's employer. The internet is largely anonymous & unvetted; some names may be fictitious and some recommendations may be deliberately harmful.

  If you need a product/service, please check these Directories:

JobshopsCapital Equip. & Install'nChemicals & Consumables Consult'g, Train'g, SoftwareEnvironmental ComplianceTesting Svcs. & Devices


©1995-2019 finishing.com, Inc., Pine Beach, NJ   -   About finishing.com   -  Privacy Policy
How Google uses data when you visit this site.