Bishop Lifting

Have you ever noticed that the Working Load Limit (WLL) on wire rope slings is not exactly a 5:1 of the wire rope's published breaking strength? This is because each type of termination — as in, a Flemish eye, wire rope clips, sockets, etc. — has something called a "termination efficiency rating," which indicates how well the fitting will hold as a percentage of the wire rope's strength. Efficiency rating on a swage product is telling you how much of the wire rope's published breaking strength you can expect to achieve if everything is done properly. [For new riggers out there: "breaking strength" is the force or load point at which a wire rope is expected to break when put under tension in a straight line, with no alterations made to it. Working Load Limits (WLL) often work WAY inside the breaking strength limit (via safety factors) so that people don't die if/when things go wrong. This could be something like an improperly fabricated sling, unidentified wear and tear, bad load calculations, unexpected shock loading, and the list goes on! Always observe and obey the WLL printed on your sling tag.] ? With standard Flemish eye sleeves, like the Crosby S-505, smaller diameter wire rope gets a higher efficiency rating than larger wire rope.?For steel core type wire ropes (IWRC): ?- Up to 1" = 96% ?- 1-1/8" to 2" = 92% ?- 2-1/4" and larger = 90% On the Crosby duplex sleeves, which are a special low-carbon steel to prevent cracking, it's 94% for all sizes (and only when the correct type of wire rope is used). The reason for the efficiency rating is that there's an inherent strength reduction in the process of swaging — because you apply so much pressure to the strands, they bind to the sleeve and a bit of loss occurs. But that's just part of the price you pay to have a terminated fitting like this. [Side Note: It is important that you don't crimp the wires by swaging too much or using the wrong die, which can reduce the efficiency of your eye far more than the catalog amount, resulting in potential catastrophic losses. So don't do that!] If you're ever calculating your own Working Load Limits for any reason, pay attention to the efficiency ratings you see on swage products, and make sure to account for those reductions. Remember, NEVER lift with a sling that has not be certified, tagged, and inspected. #LiftingSolutions #RiggingEquipment #TrusttheLift

Here's the video for one of our recent posts on pouring Crosby Wirelock Sockets!??? First, we broom the wire to ensure the strands are evenly separated. Next, we clean the wire thoroughly for a strong bond. Once prepped, we mix and pour the Wirelock Resin, making sure the lines stay perfectly vertical for a secure hold. With wire rope as big as this, we have to provide a large space for it to bend, or it will surpass the acceptable radius for a straight pour—the wires shift if it's being bent too much. After waiting for it to set, it’s off to testing! ? That’s one down — still plenty more to go for this order! ?? #LiftingSolutions #Wirelock #TrusttheLift

Getting a perfect Crosby Wirelock socket pour starts with proper prep! ??? First, we broom the wire to ensure the strands are evenly separated. Next, we clean the wire thoroughly for a strong bond. Once prepped, we mix and pour the Wirelock Resin, making sure the lines stay perfectly vertical for a secure hold. With wire rope as big as this, we have to provide a large space for it to bend, or it will surpass the acceptable radius for a straight pour—the wires shift if it's being bent too much. After waiting for it to set, it’s off to testing! ? That’s one down — still plenty more to go for this order! ?? #LiftingSolutions #Wirelock #TrusttheLift

We've got 2-1/4” BLP-600 series Spelter Socket Lines in our test bed, ready for proof testing. These lines, rated at 49.4 tons, will be tested to 98.8 tons (197,600 lbs) to ensure peak performance. Every Swage & Spelter Socket line is proof tested to 200% of its rated capacity. When Getting it Right, and When You Need it, Matter — Work with Bishop Lifting #LiftingSolutions #RiggingEquipment #TrusttheLift

Happy Women in Construction Week! This week, we celebrate the incredible women breaking barriers and building the future — one project at a time! From the office to the job site, their hard work, dedication, and expertise inspire us all. We recognize and appreciate all women in every industry, but especially those in construction who continue to shape the world around us with their talent and determination. #WomeninConstruction #womeninconstructionweek2025 #wicweek

Making a 1-inch polyester web sling may not be a very intense fabrication process, but there’s something to be said for our ability to fabricate web sling orders on-demand. This means we don’t have a bunch of stock fading on the shelves, and our customers get exactly what they want. ? We make all our house-brand “Tuffy” slings at our own shops in the U.S.A. with high quality polyester webbing. ? Need 100 of these single-ply, 1” by 6’ poly slings? No problem. (https://lnkd.in/gvufna7S) Need just one super custom web sling? Also no problem! Twisted eye? Flat eye? 2-ply? 4-ply? … You get the idea ?? ? #LiftingSolutions #Slings #TrusttheLift

Secure your connection with a screw gate carabiner! ??♂??? This classic yet reliable design ensures your gear stays locked in place when it matters most. Here’s how it works: - Unlock: Twist the barrel downward to free the gate. - Open: Swing the gate to attach your rope, harness, or anchor. The gate is spring loaded. - Lock: Twist the barrel upward until tight — now the gate won’t open accidentally. The barrel is the safety mechanism making sure the gate stays closed. A simple, effective solution for climbing, tree care, and rigging! #LiftingSolutions #CarabinerSafety #TrusttheLift

Ever wondered how a Tuffy Endless Polyester Round Sling is made? Watch as we craft this everyday lifting essential, built for durability and safety. This red sling has a 13,200 lb. vertical WLL and is made from high-quality polyester fibers for flexibility, abrasion resistance, and even load distribution. Key Steps in the Process: 1?? Bundling & looping strong polyester fibers into a continuous core. These are commonly called "load yarns." 2?? Encasing the core in a protective polyester sleeve. Before closing up the sleeve, we use paper tape to bind the load yarns together and keep them safe during the stitching process. This is easy to break apart with a hammer and does not have any negative impact on the performance of the sling. 3?? Stitching and securing the cover for durability & load distribution. This is where we add the certification tag that indicates Working Load Limit for various hitches. 4?? Quality checks to ensure it meets strict safety standards. We switched color for the sewing part, but the process is the same. Made in the USA and trusted across construction, manufacturing, and logistics. #LiftingSolutions #RoundSlings #TrusttheLift

You don’t see these every day! These rare 3-leg Swage Socketed Bridle slings and Spelter Socket Lines are staged and ready to ship. Built to spec and engineered for tough lifts, these assemblies meet ASME B30.9 standards for strength and reliability. When the job calls for specialty rigging, we’ve got the solutions you need. #LiftingSolutions #Wirelock #TrusttheLift

The strength of a 2-1/2" Flemished eye sling comes primarily from the splicing process — where the wire rope’s stiff strands are woven back onto themselves, forming a strong, natural eye. But to ensure everything stays locked in, we use a swage sleeve to secure the short tails (per ASME and industry standards). This final step compresses the sleeve, preventing movement and giving the sling a termination efficiency of 94%–96%, depending on the wire rope diameter. Our 3700-metric-ton swager can do up to 6-inch wire rope fittings. Because of its size, the swaging process is very slow — we sped up the video to 100x the original speed! Watch how it’s done! #LiftingSolutions #WireRope #TrusttheLift