Part Number	d - Bore	D - Outer Diameter	B - Width	Cr - Dynamic Radial Rating	Cor - Static Radial Rating	Reference speed	Limiting speed
W 637/8 R-2ZS	8 mm	12 mm	3.5 mm	0.312 N	0.14 N	100000 rpm	50000 rpm
W 628-2Z	8 mm	24 mm	8 mm	2.47 N	1.12 N	70000 rpm	36000 rpm
W 608 R-2RZ	8 mm	22 mm	7 mm	1.99 N	0.78 N	75000 rpm	38000 rpm
W 619/8 R	8 mm	19 mm	6 mm	1.25 N	0.455 N	85000 rpm	53000 rpm
608-2Z	8 mm	22 mm	7 mm	3.45 N	1.37 N	75000 rpm	38000 rpm
W 617/8	8 mm	12 mm	2.5 mm	0.312 N	0.14 N	100000 rpm	63000 rpm
W 619/8 R-2Z	8 mm	19 mm	6 mm	1.25 N	0.455 N	85000 rpm	43000 rpm
W 637/8-2ZS	8 mm	12 mm	3.5 mm	0.312 N	0.14 N	100000 rpm	50000 rpm
628-2RS1	8 mm	24 mm	8 mm	3.9 N	1.66 N	-	19000 rpm
628/8-2Z	8 mm	16 mm	5 mm	1.33 N	0.57 N	90000 rpm	45000 rpm
W 637/8 X	8 mm	14 mm	3.5 mm	0.462 N	0.193 N	95000 rpm	60000 rpm
W 608	8 mm	22 mm	7 mm	1.99 N	0.78 N	75000 rpm	48000 rpm
W 638-2Z	8 mm	28 mm	9 mm	3.97 N	1.96 N	67000 rpm	32000 rpm
W 608 R-2RS1	8 mm	22 mm	7 mm	1.99 N	0.78 N	-	22000 rpm
W 638	8 mm	28 mm	9 mm	3.97 N	1.96 N	67000 rpm	40000 rpm
W 619/8-2Z	8 mm	19 mm	6 mm	1.25 N	0.455 N	85000 rpm	43000 rpm
W 628	8 mm	24 mm	8 mm	2.47 N	1.12 N	70000 rpm	45000 rpm
608-2RSH	8 mm	22 mm	7 mm	3.45 N	1.37 N	-	22000 rpm
608-2RSL	8 mm	22 mm	7 mm	3.45 N	1.37 N	75000 rpm	38000 rpm
WBB1-8708-2RS1	8 mm	14 mm	4 mm	0.319 N	0.053 N	-	28000 rpm