Designation
                
                With shiled :MR84
	                
                
                Open type :MR84ZZ
	                
                
                With seal VV :-
	                
                
                With seal DD :-
	                
                
                Principal dimensions(mm)
                
                d :4
	                
                
                D :8
	                
                
                B :2
	                
                
                B1 :3
	                
                
                r(min) :0.15
	                
                
                Basic load ratings(N)
                
                Cr :395
	                
                
                Cor :139
	                
                
                Basic load ratings{kgf} 
                
                Cr :40
	                
                
                Cor :14
	                
                
                Speed ratings(rpm)  
                
                Grease
                
                ZZ :56000
	                
                
                D·D :-
	                
                
                Oil 
                
                Z :67000
	                
                
                Abutment and fillet dimensions (mm)
                
                da(min) :5.2
	                
                
                db(max) :5
	                
                
                Da(Max) :6.8
	                
                
                Db(min) :7.4
	                
                
                ra(max) :0.15
	                
                
                rb(max) :0.1
	                
                
                Weight(g) 
                
                Open type :0.36
	                
                
                With shiled :0.56