U-Bolt Clamping Capacity
U-Bolt Clamping Capacity
(OP)
Hello,
I need to connect two perpendicular pipe sections together using 2 pairs of u-bolts and a steel plate. I am concern about the capacity of this connection against sliding at the u-bolt and pipe interface. I founded several similar details, stand-off mounts in particular, shown in antenna supporting structure catalog of various manufaturers. But there is not anything about the connection capacity.
Does anyone know any reference on clamping capacity of u-bolt?
hdn.
I need to connect two perpendicular pipe sections together using 2 pairs of u-bolts and a steel plate. I am concern about the capacity of this connection against sliding at the u-bolt and pipe interface. I founded several similar details, stand-off mounts in particular, shown in antenna supporting structure catalog of various manufaturers. But there is not anything about the connection capacity.
Does anyone know any reference on clamping capacity of u-bolt?
hdn.





RE: U-Bolt Clamping Capacity
RE: U-Bolt Clamping Capacity
But it's a simple friction joint. Clamping force and friction.
If it's an important connection, you should determine these things by test using your actual components. Otherwise you can guess or use handbook values and torque-tension tables, which amount to about the same thing.
RE: U-Bolt Clamping Capacity
Here is some data on torque capacity for U bolts:-
http://lhrods.com/ubolttorque.htm
It would be best however if you analysed the max load you can put on the two pipes without crushing them and determine a torque for the U bolt based on that load.
an approximate formula for axial load = P = T/(0.2*d)
where P = axial load
T = Torque on nut
d = bolt size
0.2 = friction factor for dry threads.
desertfox
RE: U-Bolt Clamping Capacity
You need clamps similar to these to clamp a pipe as U-bolts don't do a very good job.
http://www.jerman.com/pipeclamps.html
RE: U-Bolt Clamping Capacity
So the actual clamping capacity of the u-bolt may be irrelevant, because something else in the joint may bend or collapse.
Mike Halloran
Pembroke Pines, FL, USA
RE: U-Bolt Clamping Capacity
RE: U-Bolt Clamping Capacity
Michael.
Timing has a lot to do with the outcome of a rain dance.
RE: U-Bolt Clamping Capacity
Michael.
Timing has a lot to do with the outcome of a rain dance.
RE: U-Bolt Clamping Capacity