Lifting and Rigging Supplies
Lifting and rigging supplies are used for the hoisting, securing, lashing and towing of loads. They include slings and hardware like connections, fittings and end attachments.
Steel nuts for rigging include dome nuts, wing nuts and hex nuts. These are used together with eye bolts. Eye bolts come in different styles including shoulder eye bolts for angular applications.
Eye bolts are used in a wide variety of materials handling applications to connect and anchor equipment. They consist of a threaded shank with a loop or “eye” at one end. They can be either screw or welded.
Galvanized forged eye bolts are often preferred because they offer superior strength and durability as opposed to cast or machined parts. The forged process allows the steel to stretch and align, creating a stronger piece of hardware that can handle greater loads.
There are several factors to consider when choosing the right type of eye bolt for a particular application, including working load limit and material. For example, a shoulder-type machinery eye bolt may have a different maximum working load than a regular nut eye bolt because it has a longer neck between the eyes. Additionally, it is important to check the rated capacity for the eye bolt and compare it to the expected loading conditions of the application.
Shackles are a crucial component in rigging and lifting heavy loads, equipment and objects. Often called ‘D’ or ‘chain shackles’ because of their narrower shape than bow or anchor shackles, they provide a sturdy means to keep heavy loads in line and prevent twisting and bending.
When selecting a shackle, always check the working load limit (WLL) to ensure it’s suitable for lifting and rigging supplies your specific application. You can also select a specific type of shackle to suit your needs, including round pin, bolt type and captive pin options.
All shackles should be marked with basic information, such as the manufacturer’s name, size and type of shackle, serial number and working load limit. They should also be properly attached, with the pin not being left loose or exposed to side loading. You should also regularly inspect shackles for surface blemishes, rust or excessive wear, as well as any elongation of the eye or pin holes.
Eye nuts function along with steel bolts to anchor a rigging system. They have a threaded head and are available in several sizes depending on the weight of the load. They also come in a variety of configurations. For example, the thimble eye nut is used for dead end wire and span guys on poles while the straight thimble slip eye is for single guys. They are forged in drop forging from steel rod and polished before finishing to prevent rusting.
Stainless steel eye nuts provide a strong mounting loop that screws onto male-threaded fasteners. They can be used indoors to guide rope, wire, or cable in low-humidity environments. Use shoulder eye bolts for angled lifting applications; however, you should be aware that angular loading reduces the safe load limit. Use a swivel hoist ring for angular loading applications to avoid bending the eye bolt.
The rigging industry requires specific equipment to ensure safe lifting of heavy objects. Rigging equipment includes the wire ropes, turnbuckles and clevis used with cranes and other hoisting devices to move materials and structures. It also includes the synthetic polyester webbing slings, chain and wire rope shackles, end attachments and other hardware that help lift or secure a load for transport.
These rigging supplies are available in different forms depending on the job. For example, stainless steel hex nuts come in different sizes and types (such as wing nuts, dome nuts, hex finish nuts and locking nuts) to accommodate a range of rigging applications. They can be coated in stainless steel, galvanized or zinc-plated to resist corrosion and stand up to the demands of a working environment.
The key to using a nut and bolt correctly is ensuring the right sized Lifting and Rigging Supplies Manufacturer nut fits a given bolt or screw size. This way, the nut can be tightly fastened to provide a strong and sturdy connection that won’t give out under stress or pressure.
Among the most critical components of rigging equipment, a hook is an essential point of attachment in many lifting applications. These metal pieces vary in strength, capacity and design to meet a wide range of applications. Rigging hooks can be categorized by the size of their hook opening, also known as throat. Different styles include sorting, clevis grab, eye and foundry hooks.
Clevis hooks have a U-shaped pin at one end that connects to a chain or wire rope in a sling. They can be used in a variety of lifting applications, including hoisting heavy machinery and securing cargo during transportation.
A swivel hook has a built-in rotating mechanism that allows it to spin freely, which reduces twisting stress on the load and rigging. This type of rigging hook is often used in foundry settings for fitting trunnions and handles on castings and molds.
The strength and durability of wire rope makes it one of the most useful materials in a rigger’s arsenal. It’s commonly used in construction projects and with cranes to lift and lower heavy loads. It can also be found on ships for mooring and towing. It resists corrosion from the salty sea air. Specially made wire ropes are used in deep shaft mining to bring up and down materials and workers.
There are several important factors to consider when choosing the right wire rope for a project. The first is its construction. Wire ropes have cores, which can be made from synthetic fibers, hard vegetable fibers, or an independent wire strand. The core is used to support the wound strands and help them retain their shape.
The other factor to consider is its malleability. This refers to how much the cable will bend without damage. Different applications have varying demands for strength and abrasion resistance, which affects how flexible the rope is.