基本尺寸			型號(hào)
			Model
d[mm]	D[mm]	B[mm]
55	110	34	BS2-2212-2RSK/VT143
55	100	31	BS2-2211-2RS/VT143
55	130	31	21312 EK
55	100	25	22211 EK
50	120	43	22311 EK
50	120	29	21311 EK
50	120	29	21311 EK
50	120	43	22311 EK
50	110	45	BS2-2310-2RS/VT143
50	110	27	21310 EK
50	90	28	BS2-2210-2RS/VT143
50	110	40	22310 EK
50	90	23	22210 EK
50	100	25	22211 EK
50	110	27	21310 E
50	90	28	BS2-2210-2RSK/VT143
50	110	40	22310 E/VA405
50	90	23	22210 E
50	100	25	22211 EK
50	110	40	22310 E
50	100	31	BS2-2211-2RSK/VT143
45	100	42	BS2-2309-2RS/VT143
45	110	40	22310 EK
45	85	28	BS2-2209-2RS/VT143
45	100	36	22309 E/VA405
45	90	28	BS2-2210-2RSK/VT143
45	100	36	22309 EK
45	90	23	22210 EK
45	110	40	22310 EK
45	85	23	22209 E