Torque is a rotational force which when applied to a bolt is converted to an axial load stretching the bolt like a spring.
Belleville washer torque specs.
Calculation example multiple belleville washers may be stacked to modify the spring constant or amount of.
D nominal bolt diameter.
Clamp load is also known as preload or initial load in tension on bolt.
Forces are decreased as m ore washers are used in series since some of the contact.
This notation is needed for load calculations if n of springs in a stack then.
Silicon bronze hardware is not lubricated.
All stainless steel hardware stainless steel hardware with bronze nut dia.
Again belleville washers are no exception.
In lb ft lb n m in lb ft lb n m 1 2 540 45 61 660 55 75.
Home products belleville washers.
Belleville washer stacking example.
Flat loading a belleville disc spring helps to ensure that bolts do not loosen while machinery is in use.
5500 lbf belleville washer as supplied by sefcor.
1 spring is considered to be 1 in parallel 1 in series.
If you exceed a locking washer s torque by more than a few percent during assembly you destroy the locking washer.
American belleville washers hold your bolted joint tight in the face of the most extreme cases of differential thermal expansion contraction bolt creep and vibration that threaten the integrity of the joint.
Tightening torque values are calculated from the formula t kdp where t tightening torque.
Belleville international manufactures belleville disc springs and spring washers.
Torque calculation the widely accepted formula is as follows t k f d where k estimated nut friction factor t bolt torque d nominal bolt diameter.
The belleville will be in its flat position when the preload in the bolt equals the flat load1 since the spring will be clamped between the flat joint an d the nut any additional torque applied to the nut will only stretch the bolt.
Clamp load lb is calculated by arbitrarily assuming.
Ultimately though the answer comes from the sealing load needed on the gasket not from the belleville washer.
And p bolt clamp load developed by tightening.
Flat load is the amount of axial force required to flatten a belleville disc spring.
This is the same with belleville washers.
We specialize in high temperature applications and the most corrosive environments where first rate quality is.
The values assume the following in addition to the information listed in the chart.
We utilize quality spring steels including carbon alloy tool grade specialty stainless nickel alloys titanium alloys and more.
Torque is the rotational force applied to a bolt to tighten a belleville disc spring.
To better understand this we need to understand torque and its relationship to a bolted system.
