SHAFTHUBLOCK
CALCULATION REPORT
Order : Dware
Project : Baling press
Subproject : Crank connecting rod drive
Project item : Crankshaft
Shaft ID : PR-SHAFT
Hub element ID : PR-CRANK
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  : 316  VSV  C45E V           490   700   340   14  190  210000  0.30  7.85




Hub    : 615  GSN  GS-52            260   520   260   18  250  215000  0.30  7.80
Input press/shrink fit Symbol Unit Shaft Hub
Nominal torque to transmit T N.m 800.00
Nominal axial force Fa kN 2.500
Application factor KA -- 1.25
Outside diameter do mm 70.00 140.00
Inside diameter di mm 0.00 70.00
Length of contact surface LF mm -- 60.0
Roughness of contact surface Ra µm 0.800 0.800
Tolerance class Tg -- -- 7
Min safety factor plastic flow SF -- 1.00 1.00
Minimum safety factor on slip Srmin -- 1.40
Rotation speed N rpm 500
Surface condition -- -- ungreased
Assembly method -- -- press
Load classification -- -- uniform
Basic fit system -- -- hole
Calculation Symbol Unit Hub Hub
Required tangential force Ftreq N 28571.4
Required resultant stick force Freq N 28741.8
Contact surface area AF mm² 13195
Stick coefficient νru -- 0.090
Required contact pressure pFreq N/mm² 34
Diameter ratio Q -- 0.000 0.500
Strain factor K µm²/N 3.33 9.15
Required smoothed interference Preq µm 30
Smoothing of contact surface G µm 10
Minimum oversized interference Pomin µm 40
Necessary shaft hub fit -- -- t6 H7
Tolerance value Tg µm 19 30
Lower deviation Ai µm 75 0
Upper deviation Ae µm 94 30
Minimum fit interference PominT µm 45
Maximum fit interference PomaxT µm 94
Max smoothed fit interference Pmax µm 84
Maximum fit contact pressure pFmax N/mm² 96
Contact pressure limit pFlim N/mm² 490 108
Safety factor on contact pressure SF -- 5.10 1.13
Minor torque capacity Tri N.m 1653
Safety factor on slip Sri -- 1.65
Minor torque capacity at speed N TriN N.m 1652
Minimum contact length LFmin mm 50
Assembly Symbol Unit Shaft Hub
Upper axial press force Fpr kN 101.3
Oversize for assembly PoF µm 164
Linear contraction|expansion coeff α E-6/°K 8.50 11.00
Cooling - | heating temperature θ °C 20 233
Min cooling | max heating temperat θmin,max °C -196 350
Stress on contact surface Symbol Unit Shaft Hub
Tangential stress σtF N/mm² -96 160
Radial stress σrF N/mm² -96 -96
Comparison stress σvF N/mm² 96 224
Safety factor on plast flow SFF -- 5.10 1.16
Stress on inside | outside diam Symbol Unit Shaft Hub
Tangential stress σti,o N/mm² -96 64
Radial stress σri,o N/mm² -96 0
Comparison stress σvi,o N/mm² 96 64
Safety factor on plast flow SFi,o -- 5.10 4.06
Contraction - expansion on Symbol Unit Shaft Hub
Outside - | inside diameter Δdo|Δdi µm -22 61
Inside - | outside diameter Δdi|Δdo µm 0 42