ASTM D8227
Standard Test Method for Determining the Coefficient of Friction of Synchronizer Lubricated by Mechanical Transmission Fluids (MTF) Using a High-Frequency, Linear-Oscillation (SRV) Test Machine
Available Formats:
- Availability: Immediate Download
- Language: English
- License Type: Single User
- Updates: Not Included
- Availability: Request Quote
- Language: English
- License Type: Enterprise / Multi User
- Updates: Included
About This Item
ASTM D8227 is the standard test method for determining the coefficient of friction of synchronizer lubricated by mechanical transmission fluids (MTF) using a high-frequency, linear-oscillation (SRV) test machine. It provides a controlled way to evaluate how a transmission fluid may influence friction behavior in synchronizer contact conditions, which is important for transmission performance assessment and product comparison. By defining a repeatable laboratory method, the standard helps support more consistent testing and better-informed technical decisions.
ASTM D8227 standard overview
This ASTM standard focuses on measuring friction characteristics with an SRV test machine under high-frequency, linear-oscillation conditions. The method is aimed at synchronizer systems lubricated by mechanical transmission fluids, making it relevant to tribological evaluation where friction behavior matters. ASTM D8227 is useful for establishing consistent test results across laboratories and for comparing fluid performance under a defined procedure. As a technical document, it supports standardized measurement rather than broad material qualification.
Where is ASTM D8227 used?
ASTM D8227 is commonly used in testing environments that evaluate mechanical transmission fluids for synchronizer applications. It is relevant in laboratories, product development settings, and quality control workflows where friction performance needs to be measured with a high-frequency, linear-oscillation SRV test machine. The standard is especially useful when comparing candidate fluids, checking batch consistency, or supporting engineering decisions related to transmission lubrication behavior. Its use is centered on controlled tribological testing rather than general vehicle service conditions.
Practical importance of ASTM D8227
In practice, ASTM D8227 helps organizations measure friction in a consistent and repeatable way, which is important for compliance, procurement, and product evaluation. When mechanical transmission fluids are being screened or compared, a recognized test method reduces ambiguity and supports more reliable technical communication. The standard can also help minimize risk by improving confidence in how a fluid may behave in synchronizer-related testing. For teams responsible for specification or quality control, it provides a clear reference for laboratory assessment.
- Synchronizer friction measurement
- Mechanical transmission fluid evaluation
- SRV linear-oscillation testing
- Repeatable laboratory comparison
- Quality control and technical review
- Publication Date: 2025-04-29
- Publisher: ASTM
Need This Standard?
Request a personalized quote today to receive the latest edition in PDF or other available formats.
Need This Standard?
Request a personalized quote today to receive the latest edition in PDF or other available formats.
Summarize with AI
Get quick summaries using your favorite AI engine.
Online Standart Disclaimer
OnlineStandart.com is an authorized reseller of international standards, operating through partnerships with authorized distributors. We do not own the copyrights or trademarks of the standards we sell, including but not limited to those of API, ASHRAE, BSI, SAE, ASTM, IEEE, IEC, ASME, ISO, and others.
All product names, logos, and brands are the property of their respective owners and are used for identification purposes only; their use does not imply endorsement. OnlineStandart.com is not affiliated with or endorsed by any standards development organization unless explicitly stated. The content of this document is for informational purposes only and is intended to promote our licensed reselling services.
Online Standart does not host, distribute, or link to free, unlicensed, or uncertified copies of copyrighted standards. Every document we deliver is a licensed copy obtained through authorized channels and supplied with full licensing documentation. The “Free PDF Download” option on our product pages refers to this free informational document — never to a free copy of any standard.