Designation
                
                With shiled :MR137
	                
                
                Open type :MR137ZZ
	                
                
                With seal VV :-
	                
                
                With seal DD :-
	                
                
                Principal dimensions(mm)
                
                d :7
	                
                
                D :13
	                
                
                B :3
	                
                
                B1 :4
	                
                
                r(min) :0.2
	                
                
                Basic load ratings(N)
                
                Cr :540
	                
                
                Cor :276
	                
                
                Basic load ratings{kgf} 
                
                Cr :55
	                
                
                Cor :28
	                
                
                Speed ratings(rpm)  
                
                Grease
                
                ZZ :40000
	                
                
                D·D :-
	                
                
                Oil 
                
                Z :48000
	                
                
                Abutment and fillet dimensions (mm)
                
                da(min) :8.6
	                
                
                db(max) :9
	                
                
                Da(Max) :11.4
	                
                
                Db(min) :11.6
	                
                
                ra(max) :0.2
	                
                
                rb(max) :0.15
	                
                
                Weight(g) 
                
                Open type :1.58
	                
                
                With shiled :2.02