TS 966

TS 966 is a terminology and symbols standard that aligns technical communication on tolerances for rolling bearings. In this field, terms such as size, deviation, and tolerance must be understood consistently, and this document establishes the names and symbols used for those concepts.

How tolerance language is used in rolling bearings

In general engineering usage, a tolerance is the permissible range of dimensional variation for a part. For rolling bearings, this matters particularly in relation to the dimensional fit between the inner ring, outer ring, rolling elements, and the mating shaft or housing. Clear terminology helps manufacturers and users interpret the same geometric quantities in the same way.

The scope of this standard is the definitions and symbols of the terms used when determining tolerances for rolling bearings. In other words, it focuses on the language used to express tolerances rather than on the tolerances themselves. That makes it important for dimensional accuracy, interchangeability, and consistency in technical documentation.

Document scope and edition status

• Terms and symbols related to rolling bearing tolerances.
• Definitions and notation treated together for consistent use.
• This TS 966 record belongs to a withdrawn edition.
• It is associated with ISO 1132:1980 as its reference basis.

As a result, TS 966 is useful for anyone working with rolling bearing design, dimensioning, or technical terminology. It provides a shared vocabulary for understanding how tolerance concepts relate to fit, manufacturing precision, and quality control.