ASTM D7420-11
Standard Test Method for Determining Tribomechanical Properties of Grease Lubricated Plastic Socket Suspension Joints Using a High-Frequency, Linear-Oscillation (SRV) Test Machine

Standard No.

ASTM D7420-11

Release Date

2011

Published By

American Society for Testing and Materials (ASTM)

Status

Be replaced

Replace By

ASTM D7420-17

Latest

ASTM D7420-23

Scope

This test method can be used to quickly determine the lubricating ability of greases lubricating automotive plastic socket suspension joints. This test method has found wide application in qualifying greases used in chassis systems. This test method is a material and application oriented approach based on inputs from field experiences for characterizing the tribological behavior (friction and wear) using random, discrete, and constant parameter combinations. Users of this test method should determine whether results correlate with field performance or other applications prior to commercialization.

1.1 This test method covers a procedure for determining the friction and wear behavior of grease lubricated plastic socket suspension joints, for validation of suspension joint greases and quality inspection for those greases under high-frequency linear-oscillation motion using the SRV test machine.

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 and health practices and determine the applicability of regulatory limitations prior to use.

ASTM D7420-11 Referenced Document

• ASTM A295 Standard Specification for High-Carbon Anti-Friction Bearing Steel
• ASTM D217 Standard Test Methods for Cone Penetration of Lubricating Grease
• ASTM D4175 Standard Terminology Relating to Petroleum Products, Liquid Fuels, and Lubricants
• ASTM D5706 Standard Test Method for Determining Extreme Pressure Properties of Lubricating Greases Using A High-Frequency, Linear-Oscillation (SRV) Test Machine
• ASTM E45 Standard Test Methods for Determining the Inclusion Content of Steel
• ASTM G40 Standard Terminology Relating to Wear and Erosion

ASTM D7420-11 history

• 2023 ASTM D7420-23 Standard Test Method for Determining Tribomechanical Properties of Grease Lubricated Plastic Socket Suspension Joints Using a High-Frequency, Linear-Oscillation (SRV) Test Machine
• 2018 ASTM D7420-18 Standard Test Method for Determining Tribomechanical Properties of Grease Lubricated Plastic Socket Suspension Joints Using a High-Frequency, Linear-Oscillation (SRV) Test Machine
• 2017 ASTM D7420-17 Standard Test Method for Determining Tribomechanical Properties of Grease Lubricated Plastic Socket Suspension Joints Using a High-Frequency, Linear-Oscillation (SRV) Test Machine
• 2011 ASTM D7420-11 Standard Test Method for Determining Tribomechanical Properties of Grease Lubricated Plastic Socket Suspension Joints Using a High-Frequency, Linear-Oscillation (SRV) Test Machine
• 2010 ASTM D7420-10 Standard Test Method for Determining Tribomechanical Properties of Grease Lubricated Plastic Socket Suspension Joints Using a High-Frequency, Linear-Oscillation (SRV) Test Machine