Bearing NO.  
                
                New :NU30/670
	                
                
                Old :30321/670
	                
                
                Boundary dimensions(mm)    
                
                d :670
	                
                
                D :980
	                
                
                B :230
	                
                
                r?1.2min :7.5
	                
                
                r3、4min :7.5
	                
                
                Fw :744
	                
                
                Ew :914
	                
                
                Basic load ratings(kN) 
                
                Cr :6420
	                
                
                Cor :12100
	                
                
                Limiting speed(rpm) 
                
                Grease :430
	                
                
                Oil :500
	                
                
                Abutment and fillet dimensions(mm)  
                
                da min :
	                
                
                db min :703
	                
                
                Da max :947
	                
                
                Db max :
	                
                
                ra max :6
	                
                
                rb max :6
	                
                
                Weight (kg)
                
                Refer :600