基本尺寸			型號
			Model
d[mm]	D[mm]	B[mm]
20	52	15	6304-2Z
20	72	19	6404
20	25	4	WBB1-8714
20	47	18	4204 ATN9
20	42	12	W 6004
20	52	15	6304 N
20	42	12	W 6004-2RS1
20	47	14	6204-2ZNR
20	52	15	W 6304-2RZ
20	42	12	6004
20	32	7	W 61804-2Z
20	37	9	W 61904-2RZ
20	32	7	61804
20	52	15	6304-ZNR
20	52	15	6304-Z
20	52	15	6304-RSL
20	42	8	16004
20	52	15	6304-RSH
20	37	9	W 61904
20	42	12	6004-Z
20	42	12	W 6004-2RZ
20	52	15	6304 NR
19.05	25.4	3.967	D/W SRI-1634-2ZS
19.05	50.8	17.462	RMS 6
19.05	41.275	11.113	D/W R12-2RZ
19.05	47.625	14.288	RLS 6
19.05	47.625	14.288	RLS 6-2RS1
19.05	47.625	14.288	RLS 6-2Z
19.05	25.4	3.967	D/W ER1634
19.05	41.275	11.113	D/W R12-2Z