| Load rating {kgf} |  | 
    
        | Bearing code | 
            
                Open6309Dust cover type6309ZZ非接触Seal圈type6309VV接触Seal圈type6309DDUWith stop ring槽6309NWith stop ring6309NR | 
    
        | Installation size (mm) | 
            
                d a (2) (Minimum)53d a (2) (Maximum)61.5Da(2) (Maximum)92r a  (Maximum)1.5Dx (Minimum)108C Y  (Maximum)5.4 | 
    
        | Dimensions | 
            
                d45D100B25r Minimum1.5 | 
    
        | Load rating (N) |  | 
    
        | Limit speed(rpm) Grease lubrication | 
            
                Open Z·ZZtype V·VVtype6700DUtype DDUtype4800 | 
    
        | Limit speed(rpm) Oil lubrication |  | 
    
        | Stop ring槽Size(1) (mm) | 
            
                a (Maximum)3.28b (Minimum)2.7D1 (Maximum)96.8r o  (Maximum)0.6r N  (Minimum)0.5 | 
    
        | Stop ring size(1) (mm) | 
            
                D2 (Maximum)106.5f (Maximum)2.46 | 
    
        | Coefficient fo |  | 
    
        | weight(kg) (Refer to) | 
            
                weight(kg) (Refer to)0.829 |