Cylindrical Roller Bearings NNU Series

NNU 49 series double row cylindrical roller bearings have three integral flanges on the outer ring and no flanges on the inner ring. It available with either a cylindrical or a 1:12 tapered bore (designation suffix K). In machine tool applications, cylindrical roller bearings with a tapered bore are preferred over bearings with a cylindrical bore, because the taper enables more accurate adjustment of clearance or preload during mounting. Bearings in the NNU 49 series, with a very low cross-sectional height, provide a higher degree of stiffness than bearings in the NN 30 series, but a somewhat lower load carrying capacity.

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Cylindrical Roller Bearings

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Product Details

NNU 49 series double row cylindrical roller bearings have three integral flanges on the outer ring and no flanges on the inner ring.
It available with either a cylindrical or a 1:12 tapered bore (designation suffix K). In machine tool applications, cylindrical roller bearings with a tapered bore are preferred over bearings with a cylindrical bore, because the taper enables more accurate adjustment of clearance or preload during mounting.
Bearings in the NNU 49 series, with a very low cross-sectional height, provide a higher degree of stiffness than bearings in the NN 30 series, but a somewhat lower load carrying capacity.

Bearing Number	d mm	D mm	B mm
NNU4917K/W33	85	120	34
NNU4920K/W33	100	140	40
NNU4921K/W33	105	145	40
NNU4922K/W33	110	150	40
NNU4924K/W33	120	165	45
NNU4926K/W33	130	180	50
NNU4926M	130	180	50
NNU4928K/W33	140	190	50
NNU4932K/W33	160	220	60
NNU4932M	160	220	60
NNU4936K/W33	180	250	69
NNU4938K/W33	190	260	69
NNU4938KM	190	260	69
NNU4940K/W33	200	280	180
NNU4944K/W33	220	300	48
NNU3092X2N/YA5	460	620	160
NNU4992/YA5	460	620	160
NNU49/530N/YA6	530	710	180
NNU49/500	500	670	170