This standard specifies the material, heat treatment, technical conditions, structure type and specifications of the C-type guide sleeve of the die guide device. This standard applies to die rolling guide die base.
GB/T 2861.8-1990 history
2008GB/T 2861.4-2008 Guide unit for stamping dies.Part4:Guide bushes for ball-bearing
1990GB/T 2861.8-1990 Guide unit for press tools--Guide bushes, type C
GB/T 2861.8-1990 Guide unit for press tools--Guide bushes, type C was changed to GB/T 2861.4-2008 Guide unit for stamping dies.Part4:Guide bushes for ball-bearing .