Part Number	d - Bore	D - Outer Diameter	B - Width	Cr - Dynamic Radial Rating	Cor - Static Radial Rating	Reference speed	Limiting speed
W 618/2 X	2 mm	5 mm	2 mm	0.094 N	0.025 N	200000 rpm	120000 rpm
WBB1-8701 R	2 mm	7 mm	2.5 mm	0.221 N	0.067 N	160000 rpm	100000 rpm
W 619/2	2 mm	6 mm	2.3 mm	0.19 N	0.051 N	180000 rpm	110000 rpm
W 619/2-2Z	2 mm	6 mm	2.3 mm	0.094 N	0.025 N	200000 rpm	100000 rpm
D/W R1-4	1.984 mm	6.35 mm	2.38 mm	0.163 N	0.048 N	170000 rpm	100000 rpm
D/W RW1-4	1.984 mm	6.35 mm	3.175 mm	0.163 N	0.048 N	170000 rpm	100000 rpm
D/W R1-4 R-2Z	1.984 mm	6.35 mm	3.571 mm	0.163 N	0.048 N	170000 rpm	85000 rpm
D/W RW1-4 R-2Z	1.984 mm	6.35 mm	4.366 mm	0.163 N	0.048 N	170000 rpm	85000 rpm
D/W R1-4-2Z	1.984 mm	6.35 mm	3.571 mm	0.163 N	0.048 N	170000 rpm	85000 rpm
D/W R1-4-2ZS	1.984 mm	6.35 mm	3.571 mm	0.163 N	0.048 N	170000 rpm	85000 rpm
D/W RW1-4-2ZS	1.984 mm	6.35 mm	4.366 mm	0.163 N	0.048 N	170000 rpm	85000 rpm
D/W RW1-4-2Z	1.984 mm	6.35 mm	4.366 mm	0.163 N	0.048 N	170000 rpm	85000 rpm
D/W R1-4 R	1.984 mm	6.35 mm	2.38 mm	0.163 N	0.048 N	170000 rpm	100000 rpm
D/W R1-4 R-2ZS	1.984 mm	6.35 mm	3.571 mm	0.163 N	0.048 N	170000 rpm	85000 rpm
D/W RW1-4 R	1.984 mm	6.35 mm	3.175 mm	0.163 N	0.048 N	170000 rpm	100000 rpm
W 638/1.5 R-2Z	1.5 mm	4 mm	2 mm	0.062 N	0.016 N	220000 rpm	110000 rpm
W 60/1.5	1.5 mm	6 mm	2.5 mm	0.19 N	0.051 N	180000 rpm	110000 rpm
W 638/1.5-2Z	1.5 mm	4 mm	2 mm	0.062 N	0.016 N	220000 rpm	110000 rpm
W 639/1.5-2Z	1.5 mm	5 mm	2.6 mm	0.135 N	0.036 N	200000 rpm	100000 rpm
W 630/1.5-2Z	1.5 mm	6 mm	3 mm	0.19 N	0.051 N	180000 rpm	90000 rpm