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Bolt Crane

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Bolt Crane
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Bolt Crane

Truck suspension parts are integrations of rubber springs, shock absorbers, custom u-bolts, spring pins, spring bushing, shackles, hangers, leaf and coil springs, and more.

U-Bolts are designed for an extensive range of products inclusive of domestic, commercial buildings, industrial building applications, automobile industries, marine and fishing, and off-shore and coastal operations. Custom U-bolts that are available in the market vary in their characteristics such as shapes, sizes, materials and grades depending on its utility.

In automobiles, custom U-Bolts have many functions, they are used to hold springs to the front and rear axles of cars, heavy trucks, off-road trucks, etc. Generally speaking, U-bolts hold truck bodies to frames, rigging applications, and anything that may need clamping force between two or more pieces of material.

The U-shape helps keep the bolt firmly in place so that it will not pull away from its fittings easily, adding uncompromising security and stability. The strongest known metal - steel - is used commonly in manufacturing the U-bolts which keeps the fastening resistant toward any kind of corrosion and is also a rust-proof material. Custom U-bolts are also available in other materials like low carbon steel, plain finish, hot dipped galvanized, zinc plated, Teflon coated, hot dipped galvanized poly-coated.

What are the elements that will help you in differentiating one U-bolt from the other?

When you are looking for a custom U-bolt, all you will have to consider is the size and shape:

o Size: The thread size of your U-bolt, rod sizes, inside width of your U-bolt, inside length of your U-bolt.

o Shape: The shape of bending in the U-bolt also helps in identifying the difference; the top may be round, square, or semi-round.

Problems with the U-bolt could result in loss of control at its worst maximum, broken springs at the least and the exerted pressure having a direct impact on the tire.

The added advantage of the U-bolt is that it can be re-tightened according to its usage and load conditions based on its specification.

Never take your chances, always refer to the manual or go by the judgement of an expert so as to save your truck from over-tightening; over-tightening of U-bolt is equally harmful. Never use old U-bolts, when you are re-tightening old nuts, the nuts tends to grab the old worn out threads directly affecting the socket to rod position.

When you subject your vehicle to frequent bad roads and overloading, the U-bolt tends to get stretched from its original position separating it from the spring and its axle will yield to the pressure thus taking a toll on the suspension compressing it beyond its limit and affecting the traction position. The wear and tear stretches the legs of the U-bolts from its original position, although it is made of the most foolproof metal and mechanism. It is advisable to go in for U-bolts with torque value, in which case the U-bolt will stretch within its elastic limits and rebound to its initial point without any damage. Therefore, even if the axle twists from the leaf spring of the suspension, the elasticity will bounce back protecting it from any mishap.

To conclude, here are a few tips on U-bolt.

o Never ever flip a U-bolt without crossover steering or interference problems.

o Re-tighten as per the spec after a few hundred miles.

o Always check them before venturing out on a trail trip.

Gary Allen is the co-founder of All Cape Spring Co. He specializes in truck suspension and Custom U-Bolts and has an experience of over a decade. All Cape Spring Co. serves Cape Cod, Sagamore Beach and Massachusetts. For more information, visit www.allcapespringco.net

Houston Octg Looks To Nai For Cranes

 North American Industries (NAI) has been selected to design and install two 10-ton Class E top-running overhead cranes for Houston OCTG Group Inc. (Houston). Houston, a wholly-owned subsidiary of WSP Holdings Limited, headquarted in Jiangsu Province, China, manufactures specialty tubing and castings used to transport crude oil and natural gas from an oil or gas layer to the earth's surface during the drilling process.

 Houston asked NAI to inspect the existing cranes in its 1,350 foot long Houston, TX-based facility. After thorough inspection by and extensive consultation with NAI technical personnel, Houston management decided to invest in new cranes. Houston also chose to replace the existing, worn rail to avoid premature damage to the new cranes. Based upon NAI's recommendation, Houston's engineering department and project manager chose heavier-duty Class E cranes because they must be capable of handling over 20 lifts per hour.

These double-girder cranes will be used in Houston's manufacturing process, which includes pipe threading, heat treatment and inspection. They will also be used to load and unload raw materials. Each crane will have two five-ton hoists bolted directly to a 10-ton trolley. The trolley will move along the 79-foot bridge beam, and the entire crane will move along the 1,350-foot runway system.  

Lena Banigan, Project Manager/Assistant VP at Houston, states, "NAI has not only been a pleasure to work with but has also provided service to meet our deadlines. In business, time is critical to advancement, and NAI has been truly accommodating."

"We are pleased to be working with Houston OCTG to meet its overhead lifting needs. We have collaborated closely with Houston's engineers and senior management to design a system tailored to meet its unique requirements," comments Craig Pelkola, Director of Technical Sales at North American Industries 

 Dan Osborn, Engineering Manager at North American Industries, adds, "The project has gone smoothly.  We assembled a team of engineers, project managers, operations personnel and field technicians to carefully oversee the design, manufacture and installation of the equipment".

About the Author

NAI is a leading manufacturer of industrial overhead cranes, including bridge cranes, gantry cranes, monorails, jib cranes, and custom-engineered systems. With its large, experienced engineering group, technical sales force and over 40 years of manufacturing expertise, the Company is well-positioned to handle the needs of a diverse range of end users. NAI designs, manufactures and installs crane components and crane systems for the military and municipalities as well as large and small operating businesses on a global basis. North American Industries maintains a membership in the Material handling Industry of America (MHIA) and the Crane Manufacturers Association of America (CMAA), and its crane systems are frequently featured in Hoist and Overhead Crane & Hoist magazines. 

LEGO with metal bars, nuts and bolts - what is it called?

When I was young, I remember my friend had a LEGO like play kit where there was a whole bunch of metal bars with holes punched on it along with a lot of nuts, bolt and other mechanical components. You used them to build a lot of different mechanical structures like trucks and cranes etc.. It is very similar to LEGO in concept except that you use nuts, bolts and metal bars to assemble them. Can anyone tell me what they are called? Thanks a lot in advance.

Sounds like an Erector Set.

www.oobject.com

Rigging Contractor in Crane Collapse Is Acquitted
William Rapetti’s lawyers argued that he was made the scapegoat for errors by others that led to the 2008 accident.

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