基本尺寸			型号
			Model
d[mm]	D[mm]	B[mm]
30mm	37mm	20mm	BK3020
9mm	13mm	12mm	BK2912
30mm	37mm	16mm	BK3016
28mm	35mm	20mm	BK2820
30mm	37mm	12mm	BK3012
28mm	35mm	16mm	BK2816
9mm	13mm	12mm	BK2912
25mm	32mm	20mm	BK2520
28mm	35mm	20mm	BK2820
25mm	32mm	16mm	BK2516
28mm	35mm	16mm	BK2816
25mm	32mm	12mm	BK2512
25mm	32mm	20mm	BK2520
22mm	28mm	16mm	BK2216
25mm	32mm	16mm	BK2516
22mm	28mm	12mm	BK2212
25mm	32mm	12mm	BK2512
20mm	26mm	16mm	BK2016
22mm	28mm	16mm	BK2216
35mm	50mm	20mm	NK40/20R+IR35×40×20
35mm	50mm	30mm	NK40/30R+IR35×40×30
38mm	48mm	30mm	NK38/30R
40mm	50mm	30mm	NK40/30R
38mm	48mm	20mm	NK38/20R
35mm	50mm	20mm	NK40/20R+IR35×40×20
32mm	47mm	30mm	NK37/30R+IR32×37×30
38mm	48mm	30mm	NK38/30R
37mm	47mm	30mm	NK37/30R
38mm	48mm	20mm	NK38/20R
32mm	47mm	20mm	NK37/20R+IR32×37×20