TourTourSURFACE DURABILITY for pitting ( ISO 6336-2 )
  pinion wheel
 number of teeth z >= 12
 profile shift coeff.  x=V/mn= 0...0.5
 E-modulus GPa GPa

 module m  mm
 pressure angle α deg.
 face width b mm
 contact stress σH lim (Tabel 4.6) MPa
 factor σHP / σH lim = (ZNT ZL Zv ZR Zw Zx ) / SH  
 factor σH / σH0 = (KA KV KK
 
pinion gear
 diameter  d=mz mm mm
 diameter base circle db=mzcos(a) mm mm
 diameter roll circle dw mm mm

 transmission ratio i=z2/z1, gear down i>1
 center distance a mm
 geometry factor ZH
 elasticity factor ZE MPa
 contact ratio εα
 contact ratio factor Zε
 permissible contact stress σHP GPa
 Roll pressure angle αw deg.
 Tangential force Ft max kN
 Maximum drive torque Tmax,1 Nm
 
www.tribology-abc.com