Part Number	d - Bore	D - Outer Diameter	B - Width	Cr - Dynamic Radial Rating	Cor - Static Radial Rating	Reference speed	Limiting speed
W 61811-2RZ	55 mm	72 mm	9 mm	7.15 N	8.5 N	19000 rpm	9500 rpm
6311 NR	55 mm	120 mm	29 mm	74.1 N	45 N	12000 rpm	8000 rpm
311-ZNR	55 mm	120 mm	29 mm	79.2 N	67 N	10000 rpm	6300 rpm
4211 ATN9	55 mm	100 mm	25 mm	44.9 N	44 N	10000 rpm	5600 rpm
211	55 mm	100 mm	21 mm	48.4 N	44 N	12000 rpm	7000 rpm
6011-2RS1	55 mm	90 mm	18 mm	29.6 N	21.2 N	-	4500 rpm
6211-2ZNR	55 mm	100 mm	21 mm	46.2 N	29 N	14000 rpm	7000 rpm
6211 M	55 mm	100 mm	21 mm	46.2 N	29 N	14000 rpm	13000 rpm
6211 N	55 mm	100 mm	21 mm	46.2 N	29 N	14000 rpm	9000 rpm
6211	55 mm	100 mm	21 mm	46.2 N	29 N	14000 rpm	9000 rpm
211-2Z	55 mm	100 mm	21 mm	48.4 N	44 N	12000 rpm	5600 rpm
311	55 mm	120 mm	29 mm	79.2 N	67 N	10000 rpm	6300 rpm
211-ZNR	55 mm	100 mm	21 mm	48.4 N	44 N	12000 rpm	7000 rpm
6311	55 mm	120 mm	29 mm	74.1 N	45 N	12000 rpm	8000 rpm
W 61911-2Z	55 mm	80 mm	13 mm	14.3 N	14 N	17000 rpm	8500 rpm
6211-ZNR	55 mm	100 mm	21 mm	46.2 N	29 N	14000 rpm	9000 rpm
6011 NR	55 mm	90 mm	18 mm	29.6 N	21.2 N	16000 rpm	10000 rpm
6311-RS1	55 mm	120 mm	29 mm	74.1 N	45 N	-	3800 rpm
6311-Z	55 mm	120 mm	29 mm	74.1 N	45 N	12000 rpm	8000 rpm
211-2ZNR	55 mm	100 mm	21 mm	48.4 N	44 N	12000 rpm	5600 rpm