Part Number	d - Bore	D - Outer Diameter	B - Width	Cr - Dynamic Radial Rating	Cor - Static Radial Rating	Reference speed	Limiting speed
NNU4972K	360mm mm	480mm mm	118mm mm	-	-	-	-
NNU4976	380mm mm	520mm mm	140mm mm	-	-	-	-
NNU4976K	380mm mm	520mm mm	140mm mm	-	-	-	-
NNU4980	400mm mm	540mm mm	140mm mm	-	-	-	-
NNU4980K	400mm mm	540mm mm	140mm mm	-	-	-	-
NNU4984	420mm mm	560mm mm	140mm mm	-	-	-	-
NNU4984K	420mm mm	560mm mm	140mm mm	-	-	-	-
UCF320	100mm mm	215mm mm	108mm mm	-	-	-	-
UCF324	120mm mm	260mm mm	126mm mm	-	-	-	-
UCF321	105mm mm	225mm mm	112mm mm	-	-	-	-
UCF326	130mm mm	280mm mm	135mm mm	-	-	-	-
UCF322	110mm mm	240mm mm	117mm mm	-	-	-	-
UCF328	140mm mm	300mm mm	145mm mm	-	-	-	-
UCF324	120mm mm	260mm mm	126mm mm	-	-	-	-
UCFC204	20mm mm	47mm mm	31mm mm	-	-	-	-
UCF326	130mm mm	280mm mm	135mm mm	-	-	-	-
UCFC205	25mm mm	52mm mm	34.1mm mm	-	-	-	-
UCF328	140mm mm	300mm mm	145mm mm	-	-	-	-
UCFC206	30mm mm	62mm mm	38.1mm mm	-	-	-	-
UCFC204	20mm mm	47mm mm	31mm mm	-	-	-	-