Rescue trucks attach the device to the vehicle via anchor shackle and pull the car out with its winch. Snatch blocks are often associated with vehicle recovery, where rescue trucks use these contraptions with winches and wire rope to increase the strength and allow for a smoother, easier recovery process. The most common reasons are listed below: There are many different configurations and applications for using snatch blocks. Once opened up, then the next step is to thread the wire rope through, otherwise known as "reeving." Wrap the wire rope around the sheave a few times to secure it in place.Īfter settling the rope inside the sheave where you want it to be, seal up the metal casing by screwing the bolt back on or putting the pin back into place. Make sure you follow the directions on how to open up these mechanisms without completely disassembling them. Some require pulling a wire pin out of the sheave bolt, while others need to completely unscrew the sheave bolt to open up. This is done differently depending on the type of snatch block you have. We at US Cargo Control offer different sizes, makes, and variations of these snatch pulleys, including Crosby® McKissick® Snatch Blocks. There are three main types of snatch pulleys that come in many different variations and designs: Learn more about the difference between snatch blocks and wire pulleys.īoth of these mechanisms work the same way, and it really comes down to user preference, as well as what the situation requires.Pulleys do not have this capability, and require reeving the wire rope through the opening. However, the metal plate, sometimes called a "cheek plate," opens up for easier threading, or "reeving," of the wire rope. In essence, snatch blocks are heavy-duty pulleys in metal casings. Wire PulleyĪ common question asked is "what are snatch blocks, and how are they different from other wire pulleys?" This allows you to pull in a three-point motion, changing the direction of the cable, reducing the amount of force needed, and making for a more efficient process. When configuring a pulley system to pull heavy items, a snatch block adds an additional component that offsets the anchor point. However, they also work for other purposes like lifting and hoisting heavy objects, towing small vehicles, and clearing items out of roadways and other paths. They are typically used in vehicle recovery and work in conjunction with winches. See Specialized lifting solutionspage for some examples.A snatch block, also known as a snatch pulley or snatch block pulley, is a particular type of heavy-duty pulley block that provides a strong and versatile mechanical advantage to lifting and rigging heavy items. If you have any specific requirements, we’ll work with you to create a custom product that best suits your needs. Let our expert team assist in your rigging gear selection today. With so many different variations, sizes and weight limitations, it’s important to know what to look for when choosing the right sheave block or sheave. Sheaves / Pulleys to suit wire and manilla ropes as well as the new dyneema range of ropes.SuperLift’s range of sheave blocks and sheaves is extensive:. The force required diminishes proportionately with the amount of pulleys or “loops” used during the hoist. A pulley system is used in conjunction with wire rope or other types of rigging ropes, by looping the rope through the pulley (around the sheave) several times before hooking to the object. Using a sheave / pulley block in a block and tackle application reduces the amount of force required to lift an abnormally heavy object. Sheave Blocks are common lifting mechanisms used for rigging. Sheave Blocks Use & Maintenance information.Hand & Power Operated Sheaves to AS2089.Hand & Power Operated Sheave Blocks to AS2089.
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