This part specifies the test method for oil leakage in automatic lubrication lockstitch sewing machines with oil pumps. This section is applicable to the oil leakage test of automatically lubricated lockstitch sewing machines with oil pumps.
QB/T 2609-2003 history
2003QB/T 2609-2003 Oil leak test on industrial sewing machine Part 1:Oil leak test on lockstitch sewing machine