Designation
                
                With shiled :691
	                
                
                Open type :-
	                
                
                With seal VV :-
	                
                
                With seal DD :-
	                
                
                Principal dimensions(mm)
                
                d :1
	                
                
                D :4
	                
                
                B :1.6
	                
                
                B1 :-
	                
                
                r(min) :0.1
	                
                
                Basic load ratings(N)
                
                Cr :38
	                
                
                Cor :35
	                
                
                Basic load ratings{kgf} 
                
                Cr :14
	                
                
                Cor :3.5
	                
                
                Speed ratings(rpm)  
                
                Grease
                
                ZZ :100000
	                
                
                D·D :-
	                
                
                Oil 
                
                Z :120000
	                
                
                Abutment and fillet dimensions (mm)
                
                da(min) :1.8
	                
                
                db(max) :-
	                
                
                Da(Max) :3.2
	                
                
                Db(min) :-
	                
                
                ra(max) :0.1
	                
                
                rb(max) :-
	                
                
                Weight(g) 
                
                Open type :0.09
	                
                
                With shiled :-