Designation
                
                With shiled :-
	                
                
                Open type :MR74ZZ
	                
                
                With seal VV :-
	                
                
                With seal DD :-
	                
                
                Principal dimensions(mm)
                
                d :4
	                
                
                D :7
	                
                
                B :-
	                
                
                B1 :25
	                
                
                r(min) :-
	                
                
                Basic load ratings(N)
                
                Cr :255
	                
                
                Cor :107
	                
                
                Basic load ratings{kgf} 
                
                Cr :26
	                
                
                Cor :11
	                
                
                Speed ratings(rpm)  
                
                Grease
                
                ZZ :60000
	                
                
                D·D :-
	                
                
                Oil 
                
                Z :71000
	                
                
                Abutment and fillet dimensions (mm)
                
                da(min) :-
	                
                
                db(max) :4.8
	                
                
                Da(Max) :-
	                
                
                Db(min) :6.3
	                
                
                ra(max) :-
	                
                
                rb(max) :0.1
	                
                
                Weight(g) 
                
                Open type :-
	                
                
                With shiled :0.29