Designation
                
                With shiled :MR148
	                
                
                Open type :MR148ZZ
	                
                
                With seal VV :MR148VV
	                
                
                With seal DD :MR148DD
	                
                
                Principal dimensions(mm)
                
                d :8
	                
                
                D :14
	                
                
                B :3.5
	                
                
                B1 :4
	                
                
                r(min) :0.2
	                
                
                Basic load ratings(N)
                
                Cr :820
	                
                
                Cor :385
	                
                
                Basic load ratings{kgf} 
                
                Cr :83
	                
                
                Cor :39
	                
                
                Speed ratings(rpm)  
                
                Grease
                
                ZZ :38000
	                
                
                D·D :32000
	                
                
                Oil 
                
                Z :45000
	                
                
                Abutment and fillet dimensions (mm)
                
                da(min) :9.6
	                
                
                db(max) :9.2
	                
                
                Da(Max) :12.4
	                
                
                Db(min) :12.8
	                
                
                ra(max) :0.2
	                
                
                rb(max) :0.15
	                
                
                Weight(g) 
                
                Open type :1.86
	                
                
                With shiled :2.16