![]() ![]() Positioning: Shackle fitting swivels provide for easy positioning.Ī bronze bushing in the sheave would be adequate in these operating conditions. Quenched and Tempered: Forged steel swivels, tees, yokes, and shackles are quenched and tempered. Note: Crosby strongly recommends that using the block for hoisting personnel is contingent upon all employees, including the winch operator, being trained to follow any applicable federal, local, and industry standards.įlame Hardened Grooves: All blocks 14 inches and larger, feature McKissick Roll Forged Sheaves with flame hardened grooves. The block contains the working load limit at a 10 to 1 design factor. Hoisting Personnel: It is acceptable for hoisting personnel. Recessed Side Plates: The block contains recessed side plates that are designed as a redundant feature to capture the sheaves.Ī Lower Bolt: Designed to support the full working load limit of the block and may be used as an anchor when used as a foot block.Īdditional Attachment Point: An opening in the side plate provides an additional attachment point for securing to a structure if desired. Seal Tapered Roller Bearings: This extends the life of the center pin in bearings, allowing for faster line speeds.Įasy Maintenance: Bearings are easily lubricated through a convenient grease fitting located on the center pin. The industry-preferred McKissick snatch blocks are used in diverse markets that include: They can be furnished with a hook latch and all McKissick snatch blocks are fatigue rated. In addition, sheave bearings are lubricated through a grease fitting located on the center pin for easy maintenance. And, selected sizes feature sheaves that can accommodate multiple sizes of wire-rope. They can be furnished with bronze bushings or roller bearings. For example, the opening feature of our McKissick snatch blocks permits easy inserts of the wire-rope into the sheave with the removal of one bolt, while the bolt retaining spring ensures no lost bolts. Our snatch blocks are designed for fast and easy line changes. The purpose of the groove is to support the wire-rope and keep the line from slipping off the sheave.Īll components of snatch blocks from Crosby Group – including hooks, shackles and yokes – are forged, quenched and tempered. Another important part of the sheave design and one that plays a key role in maintenance and inspection is the groove around the outside of the sheave. The sheave inside the block housing is a wheel that rotates around the center pin. The block consists of one or more sheaves within a holder, which may have an eye, hook, shackle or hanger attached to it. ![]() This is one of the most effective and frequently used work systems for moving loads today. It is designed to increase the results of your efforts. The system is used to change the direction of force, or modify the amount of force. The primary purpose for the snatch block is to change the direction of the wire-rope. With over 100 patents and the first to develop the first wireline guard, which allows for reeving of the block without disassembling, Crosby continues to make the highest quality blocks available to meet the lifting needs of the industry. Since the partnership in the mid-1900s, Crosby-McKissick is still providing new and innovative products, including snatch blocks.įrom a 2-ton capacity snatch block to a 6,000 metric ton crane block, McKissick is a name that has been associated with quality lifting tackle for more than 70 years. Crosby has earned a reputation worldwide for its dedication in being the preferred provider for quality products and superior services. ![]()
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