About Lifting Blocks
Lifting blocks are assemblies that consist of a hook or shackle, swivel, bearing, sheaves, sprockets, pins and frame. They are suspended by a hoisting rope or load chain and are designed for a variety of lifting applications. Lifting blocks often use eye hooks, clevis hooks, or grab hooks for connections to other lifting and rigging hardware. Lifting block shackles are U-shaped pieces of metal with a pin or bolt across the opening, or hinged metal loops that are secured with a quick-release locking mechanism. Lifting block swivels permit torsional rotation along one or more planes. Many types of bearings are also used with lifting blocks. Lifting block sheaves are grooved wheels or pulleys that, when used with a rope or chain, change the direction and point of application of pulling force. Lifting block sprockets are designed to transmit power by means of a toothed wheel whose teeth engage the links of the chain. Lifting block pins are of several different types. Choices include toggle, clevis, coiled, dowel, grooved, hinge, knurled, rolled, shear, spring, straight, taper or tension pins. The frames of lifting blocks are typically made of metal materials.
Engineering Web: Lifting Blocks - Machine Design
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New Product: MHD for Heavy Lifting and Transportation |... New Product: MHD for Heavy Lifting and Transportation |
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All-Purpose Cases | Machine Design Features include two double-hand side grips for easy team lifting, two heavy-duty sets of ball bearings, polyurethane wheels, and an extension handle |
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Product Spotlight: Positioning Arms for Enclosures | Syspend... lb and its field-adjustable counterbalances let users set and reset lifting force to accommodate weight changes due to load and equipment changeouts. |
