Five of the six clips shown are incorrectly attached—only the center clip in the top view is correct. Twin-base Clips.
Twin-base clips are installed as shown below. Due to their special design, they cannot be installed incorrectly. Proper seizings must be applied on both sides of the place where the cut is to be made. In a wire rope, carelessly or inadequately seized ends may become distorted and flattened, and the strands may loosen. Subsequently, when the rope is operated, there may be an uneven distribution of loads to the strands; a condition that will significantly shorten the life of the rope.
Either of the following seizing methods is acceptable. Method No. Then turn its long end at right angles to the rope and closely and tightly wind the wire back over itself and the rope until the proper length of seizing has been applied. Twist the two ends of the wire together, and by alternately pulling and twisting, draw the seizing tight. The Seizing Wire. The seizing wire should be soft or annealed wire or strand.
Seizing wire diameter and the length of the seize will depend on the diameter of the wire rope. The length of the seizing should never be less than the diameter of the rope being seized. Proper end seizing while cutting and installing, particularly on rotation-resistant ropes, is critical. Failure to adhere to simple precautionary measures may cause core slippage and loose strands, resulting in serious rope damage.
If core protrusion occurs beyond the outer strands, or core retraction within the outer strands, cut the rope flush to allow for proper seizing of both the core and outer strands. In the absence of proper seizing wire or tools, the use of sufficiently-sized hose clamps is acceptable. The majority of wire rope problems occurring during operation actually begin during installation, when the rope is at its greatest risk of being damaged.
Proper installation procedures are vital in the protection and performance of wire rope products. Until the rope is installed it should be stored on a rack, pallet or reel stand in a dry, well-ventilated storage shed or building. Tightly sealed and unheated structures should be avoided as condensation between rope strands may occur and cause corrosion problems.
If site conditions demand outside storage, cover the rope with waterproof material and place the reel or coil on a support platform to keep it from coming directly in contact with the ground. While lubrication is applied during the manufacturing process, the wire rope must still be protected by additional lubrication once it is installed. Lubricants will dry out over a period of time and corrosion from the elements will occur unless measures are taken to prevent this from happening.
When the machine becomes idle for a period of time, apply a protective coating of lubricant to the wire rope. Moisture dew, rain, and snow trapped between strands and wires will create corrosion if the rope is unprotected. Also apply lubricant to each layer of wire rope on a drum because moisture trapped between layers will increase the likelihood of corrosion. Always use the nominal diameter as specified by the equipment manufacturer.
Using a smaller diameter rope will cause increased stresses on the rope and the probability of a critical failure is increased if the rated breaking strength does not match that of the specified diameter. Using a larger diameter rope leads to shorter service life as the rope is pinched in the sheave and drum grooves which were originally designed for a smaller diameter rope.
Just as using a different diameter rope can create performance problems, so can the use of an excessively undersized or oversized rope. Measure the wire rope using a parallel-jawed caliper as discussed in Measuring Rope Diameter at the top of this page. On the less severe side, you will have bad performance or it might not work at all. With our experience and access to all brands of wire rope, Mazzella guarantees we can get you the right rope for your cranes.
If the wrong wire rope is ordered and delivered, it could be hours or days before the correct rope is on location. Especially with a lot of the larger cranes, manufacturers are shipping model-specific ropes all over the country, and depending on location and money, that could cause delays on your jobsite.
With our large inventory of rope, Mazzella can have a new spool of wire on a truck and out for delivery in a matter of hours. Once the order process is done, what can your company do to prepare for delivery and installation? As much as Mazzella can be prepared on our end, the customer needs to be ready for installation so the process can go as smoothly and safely as possible. You have to make sure the technicians have the requisite space to perform their duties.
The easier it is for the installers to get on-site, get to work and finish their responsibilities, the faster your company can get back up and running.
Also, Mazzella recommends you measure your sheaves with a sheave gauge. A sheave gauge will help you measure the wear of the root, the amount of wear on the groove wall and the diameter of the wire rope.
After ordering the correct rope and having the requisite space and approval for installation, how long will it take to remove and replace the old rope when the technician, assistants and supplies arrive onsite? For some small cranes, the timeframe could be as little as 45 minutes, but for larger cranes, removing the old rope and installing the new one could be a several-hour process.
The most important thing is the quicker your supplier responds to your order and gets a rope on location, the quicker that rope gets installed properly, saving time and money. Downtime is the key, and it could cost companies tens of thousands of dollars per day if their crane s are inoperable.
In this product bulletin, learn why this is important for our XLT4 rope product. After reading this product bulletin, you will understand why XLT4 Crane Rope provides a greater rope footprint when in contact with drums and sheaves and what this means for your application performance. Additionally, you will learn why XLT4 offers less scrubbing and abrasion and why this reduces contact pressure on ropes.
Home - Technical Support - Crane. Date of Publication: Source: Reference Document 52 pages View Block rotation and rope stability Twisted hoist lines can bring a construction project to a sudden halt, resulting in downtime. Date of Publication: Source: Reference Document 2 pages View Choosing the right wire rope for your application No single rope can do it all.
Date of Publication: Source: Reference Document 2 pages View Drum Crushing on Boom Hoists In this Product Bulletin, you will learn about the various causes of crushing, the effects of crushing and how to properly evaluate the crushing. Date of Publication: Source: Reference Document 2 pages View How to inspect your wire rope Despite their durability and strength, wire ropes used on cranes will wear out and need to be retired from service. Date of Publication: February Source: Reference Document 2 pages View Rotation Resistant Rope Product Bulletin When a load is placed on a rope, torques are created within the rope as wires and strands try to straighten out.
Date of Publication: January Source: Product Bulletin 1 page View Swivel Usage Using an active, in-line, anti-friction swivel with the majority of types and classes of wire ropes is detrimental to their service life and can lead to unpredictable conditions during operation.
We offer installation at any of our six locations as well as bringing wire rope to the site for installation to save time. After a quick conversation, one of our service trucks will arrive on-site to install the new rope.
Our fully-equipped trucks are ready to help with most other repair jobs in the field as well. Since opening with four locations in , Triad Machinery now operates six branches throughout Washington and Oregon. Factory-trained and certified, our service technicians will keep your cranes in top working condition. We pride ourselves as a full-service dealership, providing repairs, parts, and maintenance for your equipment needs.
Each of our six branches specializes in new and used equipment, equipment rentals, parts, and service. Skip to content Locations Careers Contact Get In Touch. Locations Careers Contact Wire Rope Installations.
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