GB/T 7631.4-1989 Lubricants and related products (class L)--Classification--Part 4:Family F (Spindle bearings, bearings and associated clutches) (English Version)
General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
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GB/T 7631.4-1989
Scope
This standard specifies the detailed classification of Group F (spindles, bearings and related clutches) products in Category L (lubricants and related products), and it is a part of GB7631. This standard should be understood in conjunction with GB7631.1.
GB/T 7631.4-1989 history
1989GB/T 7631.4-1989 Lubricants and related products (class L)--Classification--Part 4:Family F (Spindle bearings, bearings and associated clutches)