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    NAB系列(NAB-32,NAB-34,NAB-42,NAB-44,NAB-52,NAB-54)  
      
        
           
              | 
            ACTION: 
               
              On exciting the coil. Armature is attracted to field byond the spring 
              force and makes a gap between inner-disc and outer-disc. Then the 
              brake is released. Armature is released by interruption of coil 
              current and pushes inner-disk and outer-disc to end plate by the 
              spring force, then the brake is actuated by friction. This brake 
              is closed any time when the coil is not excited. | 
           
        
       
      
      
        
           
            | characteristics | 
              model 
                No:NAB-  | 
           
           
            |   NAB-32  | 
              NAB-34  | 
              NAB-42  | 
              NAB-44  | 
              NAB-52  | 
              NAB-54  | 
           
           
            |   | 
              2  | 
              4  | 
              7.5  | 
              15  | 
              22  | 
              40  | 
           
           
            |   | 
              *200  | 
              *200  | 
              90  | 
              90  | 
              90  | 
              90  | 
           
           
            |   | 
              346  | 
              346  | 
              383  | 
              383  | 
              237  | 
              237  | 
           
           
            |   | 
              195  | 
              195  | 
              240  | 
              240  | 
              380  | 
              380  | 
           
           
             
                
                   
                    | Allowable braking energy rate | 
                    W | 
                   
                
                | 
              41  | 
              82  | 
              98  | 
              123  | 
              123  | 
              123  | 
           
           
             
                
                   
                    | Allowable braking energy upto gap 
                      adjustment | 
                    MJ | 
                   
                
                | 
              29  | 
              29  | 
              57  | 
              57  | 
              40  | 
              40  | 
           
           
            |   | 
              1800  | 
           
           
            | Mechanical life | 
              1,000,000  | 
           
           
            |   | 
              1.3  | 
              1.4  | 
              3.0  | 
              3.2  | 
              4.9  | 
              5.3  | 
           
           
            | Suitable power unit | 
              HD-10S 
             |   HD-106R  | 
           
           
            |   | 
            -10乣+40  | 
           
        
       
        
      
        
           
            |   model 
                No. 
                NAB-  | 
              dimension  | 
           
           
            |   φA  | 
              L  | 
              φB  | 
              SH7  | 
              WE9  | 
              φC  | 
           
           
            |   NAB-32  | 
              90  | 
              63.5  | 
              105  | 
              12  | 
              4  | 
              5.5  | 
           
           
            |   NAB-34  | 
              90  | 
              71  | 
              105  | 
              14  | 
              5  | 
              5.5  | 
           
           
            |   NAB-42  | 
              124  | 
              80  | 
              144  | 
              18  | 
              5  | 
              6.5  | 
           
           
            |   NAB-44  | 
              124  | 
              90  | 
              144  | 
              22  | 
              7  | 
              6.5  | 
           
           
            |   NAB-52  | 
              150  | 
              89.5  | 
              170  | 
              22  | 
              7  | 
              9  | 
           
           
            |   NAB-54  | 
              150  | 
              102  | 
              170  | 
              28  | 
              7  | 
              9  | 
           
        
       
          
        
           
            Illustration. 
              [holes for mounting]  | 
           
        
       
      
            
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