Designation
                
                With shiled :681X
	                
                
                Open type :681XZZ
	                
                
                With seal VV :-
	                
                
                With seal DD :-
	                
                
                Principal dimensions(mm)
                
                d :1.5
	                
                
                D :4
	                
                
                B :12
	                
                
                B1 :2
	                
                
                r(min) :0.05
	                
                
                Basic load ratings(N)
                
                Cr :112
	                
                
                Cor :33
	                
                
                Basic load ratings{kgf} 
                
                Cr :11
	                
                
                Cor :3.5
	                
                
                Speed ratings(rpm)  
                
                Grease
                
                ZZ :100000
	                
                
                D·D :-
	                
                
                Oil 
                
                Z :120000
	                
                
                Abutment and fillet dimensions (mm)
                
                da(min) :1.9
	                
                
                db(max) :2.1
	                
                
                Da(Max) :3.6
	                
                
                Db(min) :3.6
	                
                
                ra(max) :0.05
	                
                
                rb(max) :0.05
	                
                
                Weight(g) 
                
                Open type :0.07
	                
                
                With shiled :0.11