The ABMA's foundation rests on the "War Committee" of 1917, which included the heads of the most iconic names in American manufacturing like New Departure (now General Bearing Company Pty Ltd ), Fafnir ( The Timken Company ) , and SKF (USA) SKF Group . These pioneers realized that for a nation to move, its bearings must be interchangeable.
History: A Wartime Necessity (1917)
The ABMA didn't start in a boardroom; it started in the trenches.
- 1917 – The War Committee: As the US entered World War I, bearing production was fragmented and chaotic. An informal committee of industry pioneers—including New Departure, Fafnir, SKF, and Norma—formed to harmonize production for the war effort.
- 1933 – The AFBMA Era: The group formalized as the Anti-Friction Bearing Manufacturers Association (AFBMA). This name reflected their core technical mission: eliminating friction to increase industrial efficiency.
- 1993 – The Modern Identity: To better represent its global reach and expanded membership, it officially became the American Bearing Manufacturers Association
- 2025 – A Power Merger: On May 1, 2025, ABMA merged with the American Gear Manufacturers Association (AGMA) to form the Motion + Power Manufacturers Alliance (MPMA), creating a unified powerhouse for mechanical power transmission.
Famous for the ABEC Scale—the global shorthand for precision. Today, as we enter the era of Industry 5.0, that legacy of unity has evolved into the @ MPMA, a powerhouse alliance designed to synchronize gears and bearings into a single "Motion and Power" ecosystem.
Key Standards: The ABEC Scale & Fatigue Life
ABMA standards are the reason a bearing made by The Timken Company in Ohio fits perfectly into a machine designed by NSK in Japan.
The Technical Skeleton: Defining the "How"
The ABMA maintains a rigorous set of standards that are effectively the "laws of physics" for rotating equipment. These standards ensure that a bearing from The Timken Company in Ohio fits and performs identically to one from NSK or Schaeffler globally.
Core Standards and Their Impact
- ANSI/ABMA 7: The primary standard for radial ball bearings, defining the boundary dimensions and tolerances that allow for global interchangeability.
- ANSI/ABMA 9 & 11: The "Load Rating" bibles. These provide the mathematical formulas used by engineers at Boeing or Ford Motor Company to calculate exactly how many million revolutions a bearing will last before fatigue sets in.
- The ABEC Scale (ABEC 1 to 9): Defines the "running accuracy." An ABEC 9 bearing is so precise it is required for high-speed medical drills and aerospace gyroscopes.
Quality in Every Revolution
In the bearing world, a failure isnt just a nuisance; it’s a catastrophe. To ensure reliability, ABMA aligns its standards with the ISO/CASCO framework, specifically through ISO/TC 4 (Rolling Bearings).
- Testing (ISO/IEC 17025): High-precision bearings are tested in accredited labs to verify Running Accuracy. This isnt just about size; its about Roundness and Radial Runout.
- Traceability (AS9100): For the aerospace sector, ABMA standards are often paired with AS9100 certification (the aerospace version of ISO 9001). This ensures that every bearing in a jet engine can be traced back to the specific batch of steel used to make it.
- Anti-Counterfeiting: Because bearings are high-value, they are a major target for counterfeits. ABMA works with U.S. Customs and Border Protection to use these standards as a Technical Gatekeeper to identify and seize sub-standard fakes.
The 2026 Vision: Who is Driving the Future?
The current state of the standards is being shaped by the MPMA Executive Committee, a "who's who" of motion control leadership.
Matt Frady Dodge Industrial Jenny Blackford American Gear Manufacturers Association Douglas Smith The Timken Company Eric Ovendorf Schaeffler Brian Parsons NSK
The Industry Power Shift
The big news for 2026 is the "Digitalization of Motion." Led by visionaries like Sara Zimmerman, PMP and the technical team at Regal Rexnord , the American Bearing Manufacturers Association is currently drafting standards for "Smart Bearings." These components use embedded sensors to self-diagnose, communicating through standardized protocols to tell a factory manager when they need oil before they fail.
The Titans of Motion: Member Spotlight
These organizations are the primary "Users" and "Contributors" to the ABMA framework, ensuring that American manufacturing remains the gold standard of reliability:
- The Timken Company & SKF Group USA (Global Standard Bearers)
- JTEKT North America Corporation / Koyo Bearings North America (EV and Drivetrain Specialists)
- The Abbott Ball Company & Nachi Technology Inc (Precision Component Leaders)
- Dodge Industrial l (Mechanical Power Transmission Experts)
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