Pre Load in a Fastener explained in the simplest way possible - Pre-Load = Clamping Force

The term Pre-load is commonly used in the Engineering Sector but the meaning of it is not often fully understood. This video sets out to visually explain this in a simple way for everyone. Once it is understood the importance of maintaining the pre-load for certain applications becomes apparent and that is where our other videos might be worth watching too. The other videos explain the ways of testing bolt securing devices for their performance in maintaining the load using the Junker Test Method to DIN 25201. They also show how some devices are only to be used as "Loss Prevention Devices" where it might be important a nut does not fall off the fastener but it is not that critical that it maintains the load in it. Such as in a food plant where the bolted joint might not have major loading but you can not allow for a loose part to fall into production for example. You can see the variances in performance and how some more traditional devices are clearly not up to the task for the more Critical bolted joints that are subjected to joint movement or vibration. We aim to assist people with any Fasteners problems so please visit our website and get in touch if you need support.