SHAFTHUBLOCK
CALCULATION REPORT
Order : Dware
Project : ShaftHubLock
Subproject : Demo
Project item : Split Pulley
Shaft ID : SH00001
Hub ID : PU00002
Calculated by : AndrÚ Dewispelaere
Organization : Dware - Belgium
Date : 25/02/2023
Materials - Properties
Element: ID Cl Denomination RpN RmN sWbN A5 HB E nu rho
-------: --- --- -------------- N/mm▓ N/mm▓ N/mm▓ % HB N/mm▓ -- kg/dm│
Shaft : 265 VSN C45 380 640 320 14 240 210000 0.30 7.85
Hub : 720 GJS EN-GJS-600-3 370 600 248 3 250 174000 0.28 7.20
1 1. Input split hub design Symbol Unit Shaft Hub
2 Nominal torque to transmit T Nm 500.00
3 Nominal axial force to transmit Fa kN 1.500
4 Application factor KA -- 1.00
5 Outside diameter do mm 50.00 --
6 Inside diameter di mm 0.00 50.0
7 Length of contact surface LF mm -- 50.0
8 Roughness of contact surface Ra Ám 0.800 1.600
9 Hint for fit and tolerance T -- p7 H8
10 Number of bolts nb -- 4
11 Minimum safety factor on slip Srmin -- 1.40
12 Rotation speed N rpm 400
13 Contact surface condition -- -- ungreased
14 Load classification -- -- uniform
15 Bolt strength class -- -- 10.9
16 2. Calculation results Symbol Unit Shaft Hub
17 Stick coefficient νru -- 0.160
18 Required contact pressure pFreq N/mm▓ 35.1
19 Required bolt load force Fbreq N 21936
20 Bolt diameter db mm M8
21 Bolt load force Fb N 26200
22 Bolt tightening torque Tb Nm 30.30
23 Contact pressure by bolt force pF N/mm▓ 41.9
24 Contact pressure limit pFP N/mm▓ 127.0 218.0
25 Safety factor on contact pressure SF -- 3.03 5.20
26 Slip torque Tr Nm 836
27 Safety factor on transverse slip Sru -- 1.67
28 Axial slip force Frl kN 2.508
29 Safety factor on axial slip Srl -- 1.67
30 Slip torque at given speed TrN Nm 836
31 Outside diameter do mm 50.0 100.0
32 Minimum contact length LFbal mm 27
33 3. Stress at contact diameter Symbol Unit Shaft Hub
34 Tangential stress σtF N/mm▓ -41.9 69.8
35 Radial stress σrF N/mm▓ -41.9 -41.9
36 Comparison stress σvF N/mm▓ 41.9 97.7
37 Safety factor on plastic flow SFF -- 9.07 3.79
38 4. Stress at inside | outside diam Symbol Unit Shaft Hub
39 Tangential stress σti,o N/mm▓ -41.9 27.9
40 Radial stress σri,o N/mm▓ -41.9 0.0
41 Comparison stress σvi,o N/mm▓ 41.9 27.9
42 Safety factor on plastic flow SFi,o -- 9.07 13.26
43 5. Contraction - expansion Symbol Unit Shaft Hub
44 On outside - | inside diameter Δdodi Ám -7 23
45 On inside - | outside diameter Δdido Ám 0 16