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See Chinese contents: GB/T 32321-2015 GB/T 32321-2015: Rolling bearings -- Sealed deep groove ball bearings -- Performance test rule of dustproofing, grease leakage and temperature rise
This Standard specifies performance test rule of dustproofing, grease leakage and temperature rise for general-purpose sealed deep groove ball bearings, of which the dimensions meet the diameter series 0, 2, 3 in GB/T 276, nominal inner diameter. The bearings of other types, sizes and size ranges shall refer to this Standard to use. This Standard is applicable to dustproofing, grease leakage and temperature rise tests for sealed ball bearings on test devices.
