A clamp load, also referred to as a preload, is the force that holds a joint together. In a bolted joint, the compression occurs on the surface of impact between two parts of the joint, creating a clamping force. When used in bolted joints, this creates tension that keeps the bolt together and makes it stronger and more reliable. If the clamp load of a bolted joint is too high, it could lead to wear and tear on the threads. If it is too low, the bolt may loosen.

Securing a connection in an application can be more complicated than it appears. To the average person, a clamp is simple – turn the screw and the clamp tightens up. But when you break down the interactions and try to quantify individual contributions, things aren’t as simple as they appear.

A clamp load, also referred to as a preload, is the force that holds a joint together. In a bolted joint, the compression occurs on the surface of impact between two parts of the joint, creating a clamping force. When used in bolted joints, this creates tension that keeps the bolt together and makes it stronger and more reliable. If the clamp load of a bolted joint is too high, it could lead to wear and tear on the threads. If it is too low, the bolt may loosen.

When a bolt is tightened into a mating threaded part, the two components interact by pulling each other together. This force is called clamp load and is what keeps the joint from coming apart. Provided that the force pulling it together is greater than the outside forces (service loads) that are trying to pull it apart, no problem will result with the attachment. Unfortunately, friction plays a large part in this system. Of the 100% of torque applied to fasteners to pull them together, 50% is lost in underhead bearing face friction and 40% is lost through friction between the mating threads.

Machinery eye bolts are one of the most common types of rigging hardware used for lifting or securing machinery and equipment. Like slings, sling hooks, and shackles, eye bolts also come in various designs and configurations, made of different materials, like 304 stainless steel and zinc-plated high-carbon steel.While they're widely utilized in industrial applications, eye bolts are also one of the most frequently misinterpreted and misused pieces of hardware. Their misuse and overuse are unfortunately widespread, and given their importance in overhead lifting, abusing them raises the danger of failure, equipment damage, and injury.In this article, we'll list the do's and don'ts of hoisting a load with eye bolts and some common activities that make their use dangerous.

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