Designation
                
                With shiled :634
	                
                
                Open type :634ZZ1
	                
                
                With seal VV :-
	                
                
                With seal DD :-
	                
                
                Principal dimensions(mm)
                
                d :4
	                
                
                D :16
	                
                
                B :5
	                
                
                B1 :5
	                
                
                r(min) :0.3
	                
                
                Basic load ratings(N)
                
                Cr :1730
	                
                
                Cor :670
	                
                
                Basic load ratings{kgf} 
                
                Cr :177
	                
                
                Cor :68
	                
                
                Speed ratings(rpm)  
                
                Grease
                
                ZZ :36000
	                
                
                D·D :-
	                
                
                Oil 
                
                Z :43000
	                
                
                Abutment and fillet dimensions (mm)
                
                da(min) :6
	                
                
                db(max) :7.5
	                
                
                Da(Max) :14
	                
                
                Db(min) :13.8
	                
                
                ra(max) :0.3
	                
                
                rb(max) :0.3
	                
                
                Weight(g) 
                
                Open type :5.24
	                
                
                With shiled :5.21