SHAFTHUBLOCK
CALCULATION REPORT
Order : Dware
Project : Dobby
Subproject : Belt drive
Project item : Timing pulley
Shaft ID : DO-Shaft
Hub element ID : DO-Pulley
Calculated by : André Dewispelaere
Organization : Dware
Date : 01/06/2018 



   Mating materials




Element: ID    Cl  Denomination    R_pN  R_mN s_WbN   A5   HB     E     nu   rho




-------: ---  ---  -------------- N/mm² N/mm² N/mm²   %    HB   N/mm²   --  kg/dm³




Shaft  : 266  VSN  C45E             380   640   320   14  240  210000  0.30  7.85




Hub    : 255  VSN  C22E             240   420   200   20  220  210000  0.30  7.85




Key/rng: 715  GJS  EN-GJS-500-7     320   500   224    7  220  169000  0.28  7.10
Input design clamp ring connect Symbol Unit Shaft Hub
Nominal torque to transmit T N.m 500.00
Nominal axial force Fa kN 0.000
Action radius axial force rFa mm 0.0
Application factor KA -- 1.25
External diameter do mm 60.0 --
Internal diameter di mm 0.0 60.0
Hub width bh mm -- 60.0
Contact surface roughness Ra µm 0.800 1.600
Tolerance Tg -- h8 P8/h8
Min safety factor on failure SFh -- -- 3.50
Clamp ring width br mm 50.0
Bolt count nb -- 1
Clamp ring tolerance ITr -- P8
Min safety factor on ring failure SFr -- 2.40
Min safety factor on slip Sr -- 1.50
Surface condition -- -- ungreased
Load case -- -- uniform
Bolt strength class -- -- 12.9
Calculation Symbol Unit Shaft Hub
Outside diameter do mm 60.0 72.0
Ring outside diameter in A dorA mm 110.0
Ring outside diameter in B dorB mm 97.0
Ring inside diameter dir mm 72.0
Bolt thread dG -- M10
Bolt force Fb N 48900
Bolt tightening torque Tb N.m 71
Lever arm of normal force l1 mm 36.0
Lever arm of bolt force l2 mm 96.0
Normal force Fn N 130400
Stick coefficient νru -- 0.140
Slip torque Tr N.m 1095
Calc safety factor on slip Sr -- 1.75
Contact pressure pFsh,hr N/mm² 36 36
Calc safety factor contact pressu SFsh,hr -- 2.22 2.22
Stress in ring at point A Symbol Unit Clamp Ring
Tangential stress σtrA N/mm² 90
Radial stress σrrA N/mm² -36
Comparison stress σvrA N/mm² 112
Calc safety factor on failure SrA -- 2.86
Stress in ring at section BB Symbol Unit Clamp Ring
Burst tensile stress σtrBB N/mm² 130
Safety factor on failure SrBB -- 2.45