Bearing NO.  
                
                Cylindrical bore :NNU4124
	                
                
                Tapered bore :NNU4124K30
	                
                
                Boundary dimensions(mm)    
                
                d :120
	                
                
                D :200
	                
                
                B/C :80
	                
                
                r?1.2min :2
	                
                
                r3.4min :2
	                
                
                Basic load ratings(kN) 
                
                Cr :523
	                
                
                Cor :865
	                
                
                Limiting speed(rpm) 
                
                Speed Ratings :3000
	                
                
                Abutment and fillet dimensions(mm)  
                
                da max :137
	                
                
                Da max :190
	                
                
                ra max :2
	                
                
                rb max :2
	                
                
                Weight (kg)
                
                Refer :11