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表3后里代号及其含义(接199,年12期)代号代号排序含义示例对照根据新标准旧标准3自锁兜孔保持架JB/长974一93表D6/HA/HC/HE/HG//HN/HP/HQ/HT/HU/HV4444444844套圈、滚动体和保持架或仅是套圈 和滚动体为真空冶炼轴承钢套圈和滚动体或仅是套圈为渗碳 钢/HC—20CrZNi4A/HCI—20Cr
Table 3 after the code and meaning (then 199, year 12) Code Name Sort Meaning Sample Control According to the new standard Old standard 3 Self-locking pocket cage JB / length 974 a 93 Table D6 / HA / HC / HE / HG Ferrule, rolling element and cage or simply ferrule and rolling element for vacuum smelting Bearing ferrule and rolling element or only ferrule for carburized steel / HC HN / HP / HQ / HT / HU / HV4444444844 -20CrZNi4A / HCI-20Cr