基本尺寸			型號
			Model
d[mm]	D[mm]	B[mm]
72	90		NA4913
68	85		RNA6912
68	85		NA6912
68	85		RNA5912
68	85		NA5912
68	85		RNA4912
68	85		NA4912
63	80		RNA6911
63	80		NA6911
63	80		RNA5911
63	80		NA5911
63	80		RNA4911
63	80		NA4911
58	72		RNA6910
58	72		NA6910
58	72		RNA5910
58	72		NA5910
58	72		RNA4910
58	72		NA4910
55	67		LM556720
55	67		RLM556720
55	65		LM5530
55	65		RLM5530
52	68		RNA6909
52	68		NA6909
52	68		RNA5909
52	68		NA5909
52	68		RNA4909
52	68		NA4909
50	62		LM506225