Snatch block pulleys are ideal for rigging since they redirect a running wire rope. At the correct angle, this pulley impacts the degree of force placed on the anchor point of the block. Of all overload pieces for rigging equipment, this is one of the most commonly used. Unfortunately, a lot of people do not fully understand how this wire rope pulley functions.
Misunderstanding This Industrial Pulley
One issue is that some people think that snatch pulleys decrease the amount of pull on a line. While that does happen in certain situations, it instead increases load capability. By knowing how these pulley blocks work, many different industries can perform tasks easier, more efficiently, and safer.
Key Benefits of Wire Rope Pulleys
The primary advantage of using a snatch block pulley is that it increases both the pulling and lifting capacity of wire rope winches and hoists. For example, this gives companies involved with vehicle recovery more options.
These pulley blocks also make cable insertion quicker and easier. The side plate, also referred to as a cheek plate, simplifies the insertion of the cable. With this pulley, there is no reason to remove fittings or loads from the end of the wire rope.
These wire rope pulleys are available in many weights, styles, and sizes. Due to the way it operates, the pulley enhances rigging safety. To enjoy all the benefits that snatch block pulleys offer, it’s essential to purchase the appropriate type based on current safety standards.
What to Look for in a Snatch Block Pulley
When selecting this type of industrial pulley, you should consider several factors, including:
- Workload Limit – Not only do you want to check the workload limit (WLL) but also the wire rope. The goal is to select a wire rope compatible with the pulley’s WLL. Failing to do this will result in tremendous safety risks.
- Sheave Size – The size of the sheath in these pulley blocks must coordinate with the diameter of the wire rope. For example, if the size of the wire rope exceeds the sheave, a block under pressure could crack. As a good rule of thumb, choose the ratio of the sheave to the wire rope at 12:1. That keeps the wire rope firmly in place while under load.
- Pull Rating – Since this industrial pulley can decrease the direct pull load by 50 percent, select double the pull rating of the winch.
Turn to a Trusted Source
For the best snatch block pulleys available, we can help. Along with these pulley blocks, we offer a host of industrial solutions that improve rigging operations. Contact a company representative today to learn more.