Part Number	d - Bore	D - Outer Diameter	B - Width	Cr - Dynamic Radial Rating	Cor - Static Radial Rating	Grease lubrication	Oil lubrication
NU1956M	280 mm	380 mm	46 mm	— N	— N	— rpm	— rpm
NU1956	280 mm	380 mm	46 mm	— N	— N	— rpm	— rpm
NN4952K/YA1	260 mm	360 mm	100 mm	— N	— N	— rpm	— rpm
NU1948M	240 mm	320 mm	38 mm	— N	— N	— rpm	— rpm
NNU4944K/W33	220 mm	300 mm	48 mm	— N	— N	— rpm	— rpm
NU2944M	220 mm	300 mm	48 mm	— N	— N	— rpm	— rpm
NNU4940K/W33	200 mm	280 mm	180 mm	— N	— N	— rpm	— rpm
NN4940K/W20	200 mm	280 mm	180 mm	— N	— N	— rpm	— rpm
NNU4938KM	190 mm	260 mm	69 mm	— N	— N	— rpm	— rpm
NU2938Q/S0	190 mm	260 mm	42 mm	— N	— N	— rpm	— rpm
NU2938M/S0	190 mm	260 mm	42 mm	— N	— N	— rpm	— rpm
NNU4938K/W33	190 mm	260 mm	69 mm	— N	— N	— rpm	— rpm
NNU4936K/W33	180 mm	250 mm	69 mm	— N	— N	— rpm	— rpm
NNU4932M	160 mm	220 mm	60 mm	— N	— N	— rpm	— rpm
NNU4932K/W33	160 mm	220 mm	60 mm	— N	— N	— rpm	— rpm