基本尺寸			型号
			Model
d[mm]	D[mm]	B[mm]
60	68	20	BK6020
55	63	20	BK5520
50	58	20	BK5020
22	28	16	BK2216
20	26	16	BK2016
18	24	16	BK1816
16	22	16	BK1616
40	47	12	BK4012
35	42	12	BK3512
30	37	12	BK3012
25	32	12	BK2512
45	52	20	HK4520
40	47	20	HK4020
35	42	20	HK3520
30	37	20	HK3020
28	35	20	HK2820
25	32	20	HK2520
10	14	12	HK1012
9	13	12	HK0912
60	68	20	HK6020
55	63	20	HK5520
50	58	20	HK5020
22	28	16	HK2216
20	26	16	HK2016
18	24	16	HK1816
16	22	16	HK1616
15	21	16	HK1516
0	92	25	NK75/25
65	90	35	NK73/35
65	90	25	NK73/25