Gost 2685-75 Pdf

A Magnesium-Zinc-Zirconium (Mg-Zn-Zr) alloy.

GOST 2685-75 is an interstate standard originally adopted by the Soviet Union (USSR) and now maintained by the Euro-Asian Council for Standardization, Metrology and Certification (EASC). The full title of the standard translates to: "Precision ball bearings for instrumentation: Technical specifications."

This standard was introduced to replace older, less stringent specifications (notably GOST 2685-62) to meet the growing demands of the post-1960s technological boom—specifically for gyroscopes, servomechanisms, aircraft instruments, and medical devices.

The standard is still technically active in several former Soviet republics, including Russia, Belarus, and Kazakhstan, unless a newer replacement (such as GOST ISO or a national standard) has been explicitly adopted. gost 2685-75 pdf

If you meant a different GOST 2685-75 (some GOST numbers were reused across fields), it could instead cover other technical domains. If so, I can:

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Countries like Belarus (Gosstandart), Kazakhstan (Gosstandart), and Ukraine (DSTU) sell licensed copies. These are identical in technical content to the original 1975 version but may have national forewords. A Magnesium-Zinc-Zirconium (Mg-Zn-Zr) alloy

The standard defines precise outer diameters and wall thicknesses. Typical ranges include: