①,R(min) = s, but not less than 1.5 mm ②,k ≤ 0.8(e - s) ③,Material: a)alloyed steel; variety according to the manufacturer's choice b)Hardness: for size ≤6,HRC52;for size ≥7~8,HRC50;for size ≥10~14,HRC48;for size ≥17, HRC45. Provisions in Table 2 of the original |