ASTM G182 - 13(2018) - Standard Test Method for Determination of the Breakaway Friction Characteristics of Rolling Element Bearings

ASTM G182 - 13(2018)

Standard Test Method for Determination of the Breakaway Friction Characteristics of Rolling Element Bearings

Status : Current   Published : June 2018

Format
PDF

Format
HARDCOPY



1.1 This test method is an extension of Test Method G164 and uses an inclined plane and a paperclip rider to detect the presence or absence of lubricants on the surfaces of flexible webs. A study to identify free spinning or low rolling friction bearings indicated that the paperclip friction test could be used for rolling friction by simply replacing the paperclip with a rolling element bearing on an axle. The angle of the inclined plane at initiation of rolling is the breakaway angle. This test method can be used to measure the angle at breakaway of small diameter (up to 100 mm outside diameter) rolling element bearings. The bearings that have been tested in the development of this method are conventional ball bearings with different separators, seals, and different conditions of lubrication (none, oil, greases, and so forth), but there is no technical reason why this test method would not work with bearings of other design, including plain bearings. Rolling element bearings like any sliding system can have friction characteristics at breakaway that are different than rolling continuously. As is the case with most inclined plane friction tests, the test only produces the friction characteristic at the onset of measurable rolling, using the angle (θ) when measurable rolling commences. The objective of this test is an assessment of breakaway rolling friction characteristics to assist machine designers in the selection of rolling element bearings for instrument pivots and the like where breakaway friction is a concern.

1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.3  This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.4  This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.




Standard NumberASTM G182 - 13(2018)
TitleStandard Test Method for Determination of the Breakaway Friction Characteristics of Rolling Element Bearings
StatusCurrent
Publication Date01 June 2018
Normative References(Required to achieve compliance to this standard)No other standards are normatively referenced
Informative References(Provided for Information)No other standards are informatively referenced
Descriptors Coefficient of rolling friction, friction testing, rolling, rolling friction
ICS21.100.20
PublisherASTM
FormatA4
DeliveryYes
Pages5
File Size140 KB
Price£40.00


 Your basket
Your basket is empty

Multi-user access to over 3,500 medical device standards, regulations, expert commentaries and other documents


Tracked Changes

Understand the changes made to a standard with our new Tracked Changes version


Worldwide Standards
We can source any standard from anywhere in the world


Develop a PAS

Develop a fast-track standardization document in 9-12 months