Steam treated to reduce the chance of cold-weld and to provide an increase in service life.

Material:   HSS M2  (W6%-Mo5%-Cr4%-V2%)    

Type:
       steam-treated(black)
Tooth form:
        A/AW/B/BW/HZ
Diameter:
        200mm,225mm,250mm,275mm,300mm,315mm,325mm,350mm,370mm,400mm,425mm
Thickness:
         1.2mm,1.6mm,1.8mm,2.0mm,2.5mm,3.0mm
Bore diameter:
        32mm;38mm;40mm;50mm or customer bore size.
Pin hole size:
        Bore 32mm: 2*?8.5mm*45mm+2*?12mm*64mm with 2*?9.0mm*50mm  
        Bore  38mm: 2*?9.0mm*55mm
        Bore  40mm: 2*?8.0mm*55mm+4*?12mm*64mm
        Bore  50mm: 4*?15mm*80mm
        Special bores and pin holes on request.
Technical data:
       Hardness:900HV
       Friction:0.65