基本尺寸			型號
			Model
d[mm]	D[mm]	B[mm]
55	120	29	7311 BECBJ
55	120	29	7311 BECBM
55	120	29	7311 BECCM
55	120	29	7311 BECBPH
55	100	21	7211 BEGAP
55	100	21	7211 BEGBY
50	110	27	7310 BECBY
50	110	27	7310 BECBJ
50	110	27	7310 BECBM
50	110	27	7310 BECBP
50	110	27	7310 BECAM
50	130	31	7410 BGAM
50	110	27	7310 BEGAPH
50	110	27	7310 BEP
50	90	20	7210 BECBY
50	90	20	7210 BEP
50	90	20	7210 BECBP
50	90	20	7210 BECBJ
50	90	20	7210 BECBM
50	110	27	7310 BEGBP
50	110	27	7310 BEGBY
50	130	31	7410 BM
50	110	27	7310 BEGAF
50	110	27	7310 BEGAM
50	110	27	7310 BEGAP
50	110	27	7310 BEGAY
50	110	27	7310 BE-2RZP
50	90	20	7210 BE-2RZP
50	90	20	7210 BEGAP
50	90	20	7210 BEGBP