基本尺寸			型号
			Model
d[mm]	D[mm]	B[mm]
50	62		RLM506225
50	62		LM506220
50	62		RLM506220
48	62		RNA6908
48	62		NA6908
48	62		RNA5908
48	62		NA5908
48	62		RNA4908
48	62		NA4908
45	55		LM4530
45	55		RLM4530
45	55		LM4520
45	55		RLM4520
42	55		RNA6907
42	55		NA6907
42	55		RNA5907
42	55		NA5907
42	55		RNA4907
42	55		NA4907
40	52		RNA69/32
40	52		NA69/32
40	52		RNA59/32
40	52		NA59/32
40	52		RNA49/32
40	52		NA49/32
40	50		LM4030
40	50		RLM4030
40	50		LM4020
40	50		RLM4020
38	48		LM3830