Bolts in circulator pump<br />Strength calculation <br />
Used bolts: 4 socket head screws M4x16 8.8<br />
Strength class bolts: 8.8<br />Minimum tensile strength: 800 N/mm²<br />Rack limit: 640 N/mm²<br />
Maximum pressure (p) in the circulator pump: 6 bar = 6 x 105 Pa<br />Surface (A) = r2 x π = 0,04502 x π = 0,002025 m2<br /...
Tension table<br />(I could not find a tension table with bolts smaller than a M5, so I had to estimate the tension for a ...
Upcoming SlideShare
Loading in …5
×

Bolts circulator pump

445 views
410 views

Published on

Published in: Education
0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total views
445
On SlideShare
0
From Embeds
0
Number of Embeds
29
Actions
Shares
0
Downloads
4
Comments
0
Likes
0
Embeds 0
No embeds

No notes for slide

Bolts circulator pump

  1. 1. Bolts in circulator pump<br />Strength calculation <br />
  2. 2. Used bolts: 4 socket head screws M4x16 8.8<br />
  3. 3. Strength class bolts: 8.8<br />Minimum tensile strength: 800 N/mm²<br />Rack limit: 640 N/mm²<br />
  4. 4.
  5. 5. Maximum pressure (p) in the circulator pump: 6 bar = 6 x 105 Pa<br />Surface (A) = r2 x π = 0,04502 x π = 0,002025 m2<br />Fb = p x A<br /> = 6 x 105 x 0,04502 x π<br /> = 3817 N<br />FVmax= 3 x Fb<br /> = 3 x 3817<br /> = 11451 N<br />Divided over 4 bolts<br />11451 / 4= 2863N <br /> =2,863 kN<br />The tension of a M4 bolt will be around 3-5 kN (see tension table next slide)<br /><ul><li>According to the calculations the right bolts were chosen</li></ul>(I had no information about the friction coefficient)<br />r = 0,0450 m<br />
  6. 6. Tension table<br />(I could not find a tension table with bolts smaller than a M5, so I had to estimate the tension for a M4)<br />M4<br />

×