ASTM D8317-23 PDF

Overview

ASTM D8317-23 sets forth a standard test method for measuring the friction and wear properties of greases under rolling motion using the SRV (Schwingung, Reibung, Verschleiss) test machine. This method covers the evaluation of lubricating greases under high-frequency linear oscillation and high Hertzian contact pressures. It is widely applied to assess grease performance in slip-rolling contacts where high-speed vibrational or start-stop motions occur over extended periods, such as in gears, rolling bearings, or cam/follower systems.

This standard provides a consistent procedure to determine the coefficient of friction and wear characteristics of greases, supporting quality assurance and product development for lubricant manufacturers and end-users.

Key Topics

• Scope: The method measures the anti-wear properties and coefficients of friction of greases during rolling motion, especially under conditions typical of demanding mechanical systems.
• Test Procedure: Utilizes a SRV test machine with standardized procedures for specimen preparation, test setup, and data acquisition.
• Performance Metrics:
  • Coefficient of friction under defined oscillating loads and temperatures
  • Anti-wear characteristics as assessed by measuring planimetric wear on test disks
  • Evaluation under different frequencies, loads, and temperature conditions
• Precision and Repeatability: The method provides repeatable quantitative results, making it effective for comparative and screening purposes.
• Applicability: Especially relevant for lubricants destined for systems enduring rolling, slip-rolling, and oscillatory stresses.

Applications

The ASTM D8317-23 test method has significant value in both industrial and research settings, including:

• Lubricant Selection: Engineers and specifiers use this standard to compare and select greases for use in rolling element bearings, gears, and cam/follower interfaces where rolling motion predominates.
• Failure Prevention: By assessing wear and friction properties, this test method aids in identifying greases that minimize material loss and extend equipment life, particularly in high-load, high-vibration conditions.
• Quality Assurance and R&D:
  • Lubricant manufacturers validate the performance of new formulations using this method before market release.
  • Ongoing comparative testing supports continuous improvement and troubleshooting.
• Field Correlation: While primarily a screening test, the results can sometimes be correlated with field performance, offering insight into real-world lubricant effectiveness.

Industries benefiting from ASTM D8317-23 include:

• Automotive and transportation (bearings, gears)
• Heavy machinery and industrial equipment
• Railway and aerospace componentry
• Lubricant formulation and testing laboratories

Related Standards

ASTM D8317-23 references and aligns with other key standards relevant to the testing and characterization of lubricants and related materials:

• ASTM D4175: Terminology relating to petroleum products and lubricants
• ASTM D6425: Friction and wear properties of extreme pressure lubricating oils using SRV test machine
• ASTM D7755: Wear volume measurement on test pieces used by high-frequency, linear-oscillation test machines
• DIN 5402-1: Rolling bearings - parts of rolling bearings: cylindrical rollers
• DIN 51631: Mineral spirits - requirements for cleaning
• DIN 51834: Tribological tests in translatory oscillation apparatus

For comprehensive friction and wear analysis, these standards provide supplementary guidance and terminology.

Keywords: ASTM D8317-23, friction properties, wear properties, greases, SRV test machine, rolling motion, lubricant testing, anti-wear, coefficient of friction, rolling bearings, gear lubrication, tribology standard