1 Scope
This standard specifies the boundary dimensions and technical conditions of bearings of belt conveyor idlers for coal mines (idler bearing for short) and bearings of narrow gauge mine cars for coal mines (mine car bearing for short).
This standard is applicable to the production and inspection of bearing manufacturer and user acceptance.
2 Normative References
The following normative documents contain provisions which, through reference in this standard, constitute provisions of this standard. For dated reference, subsequent amendments to (excluding correction to), or revisions of, any of these publications do not apply. However, all parties coming to an agreement according to this standard are encouraged to study whether the latest editions of these documents are applicable. For undated references, its latest edition is applicable to this standard.
