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               Electronics-Related Materials
        inquiry      Chemical-Related Materials
    Carbon sliding materials have high self-lubricating qualities, and in addition, are excellent in thermal and chemical resistances. Such carbon materials have been used more widely as sliding material in many fields. Recently, they are used in paticular for anti-pollution purposes. Having started very early the development and manufacture of carbon materials in various many kinds, Hitachi are providing quality carbon products to meet the needs and demands from many different fields.   Plastic & Composite
      Carbon & Ceramics
       Brushes for Automobile
       Brushes for Appliance and Power
           Tool Motors
       Brushes for Micro Motors
    Carbon Sliding Materials
           AnodeMaterial for Lithium
   Features          Ion Batteries
  Chemical stability :      Glass-like Carbon
          HITALOCK has such a nature that it is not easily attacked by ordinary solution of      <HALOX>
          acids, alkalis, of organic solvents.Chemical resistance is described in more detail in      <HALOX-Z>
          item 4 "Chemical properties".      Silicon Carbide (SiC) Ceramics
  High thermal conductivity :   Automotive-Related
          Owing to HITALOCK's high thermal conductivity, heat generated at sliding part can be      Products Category List
          effectively dissipated. Thus, counterface material may not be damaged with minimized      Products Alphabetical List
           wear of HITALOCK.      HOME
  High heat resistance :      Hitachi Chemical. Co, Ltd.
          Heat can hardly degrade the machanical strength and chemical properties of    
          HITALOCK. If ample oxygen exists, oxidation will be started at a temperature over 350  
          C or so. When no oxygen is supplied, however, HITALOCK will not be oxidized even at  
          a higher temperature between 450C and 500C(dependant on grade).  
  High heat-shock resistance :  
          Coefficient of thernal expansion is very low as compared with that of other metal  
          materials. HITALOCK withstands a repetition of abrupt temperature change, incurring  
          little crack. It should also be noted that HITALOCK impregnated with resin or metal has  
          a somehow lower heat heat-shock resistance.  
  Self-lubricating property :  
          HITALOCK represents an outstanding self-lubrication, namely, it can be used without  
          lubrication. Owing to this important nature, HITALOCK is very suitable for use where  
          undersirable contamination by lubricant or similar accuracy to the case of ordinary  
          metal materials.  
  Excellent machinability :  
          HITALOCK has an excellent machinability, and can be machined on machine tools  
          such as lathes, drilling machines, milling machines, etc., obtaining the similar  
          accuracy to the case of ordinary metal materials.  
  Others :  
          One of the major advantages of carbons is its porosity. By ipregnating the carbons with  
          a resin or the like in the pores, they can be made impervious. After such treatment,  
          carbons may be used as sealing materials. Further with this treatment, mechanical  
          strength such as compressive strength, bending strength, etc. of carbons can be  
          increased also along with its improved wear resistance. It should be noted that  
          consultation should be made with us for examination of your intended uses of  
          HITALOCK under any applicable regulations.  
     
 
Bearings    Blades
Applications   Applications
Chemical pump bearings    Automotive vacuum pumps
Water pump bearings   Industrial vacuum pumps
Various pump bearings ( for nuclear   Industrial blowers
     power plant, vessels, etc.)  
 
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
 
Packings    Seal rings
Applications   Applications
Compressors    Mechanical seal rings (chemical
Generators        pumps, refrigerators)
 
   
   
   
   
   
   
   
   
   
   
   
   
   
   Characteristics  
 
Grade Composition
 HCB-1  Graphite  carbon 1.70 58 48 108 11.7 4 35 350
 HCB-1T  Graphite  carbon 1.74 66 57 137 13.7 4 35 350
 HCB-1F  Resin  impregnated 1.82 76 62 166 13.7 5 35 170
 HCB-1S  Metal  impregnated 2.40 75 85 230 23.5 10 75 350
 HCB-3  Grahpite  impregnated 1.68 55 42 98 11.7 4 32 350
 HCB-3F  Resin  impregnated 1.82 76 59 176 15.7 7 32 170
 HCB-30  Graphite  carbon 1.67 55 39 98 11.7 4 41 350
 HCB-30T  Graphite  carbon 1.75 68 53 135 13.5 4 41 350
 HCB-5  Electro  grahpite 1.74 50 39 98 7.8 3 164 400
 HCB-7  Graphite  carbon 1.75 67 42 137 12.7 3 39 350
 HCB-7F  Resin  impregnated 1.86 90 60 215 15.7 7 39 170
 HCB-8  Graphite  carbon 1.62 79 48 176 11.7 4 12 350
 HCB-8F  Resin  impregnated 1.72 100 61 255 13.7 7 12 170
 HCB-85D  Resin  impregnated 1.70 100 69 255 14.7 8 12 200
 HCB-10  Graphite  carbon 1.66 57 42 98 11.7 4 35 350
 HCB-10F  Resin  impregnated 1.80 75 59 147 13.7 5 35 170
 HCB-10H  Metal  impregnated 2.25 82 95 225 24.5 8 76 450
 HCB-63  Graphite  graphy 1.69 78 53 160 13.8 4 37 350
 
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
     
   Applications  
     Static pressure air bearings  
     A carbon material for static-pressure air bearings with this porosity -- characteristic of carbon  
     -- being controlled in a special process.  
   
   
   
   
   
   
   
   
   
   
   
   
     The shaft and bearing made contactless by air pressure improves wear and rolling friction  
     loss considerably. HITALOCK best recommends itself in high-speed, high-precision rotating  
     equipment.