sheave size for wire rope pricelist

Above all else, we are an engineering firm that can take your technical requirements for sheaves and translate them into cost effective solutions to meet or exceed the performance required of your application. Selection of the proper sheave material plays an important role in ensuring strength, durability, and overall performance in your application. Sheaves Inc. has been the number one source for the wire-rope industry, designing and providing custom engineered wire rope sheaves that meet your specific needs and rigors of your application. Trust our engineering expertise, and let us suggest a suitable material in your next challenging application.

Light weight option for high speed applications. Resistant to chemicals, temperature, and corrosion. Durable in wire and cable processing applications

Our custom process sheaves are most often machined from Gar-Dur, the densest, toughest thermoplastic today. GAR-DUR properties, such as toughness and abrasion resistance with light weight, make it ideal for high speed sheaves processing wire and cable.

Manufacturing methods limit GAR-DUR material to 23″ OD and 2″ OAW. For sheaves beyond those dimensions we use virgin UHMW cut from stress-relieved sheets.

HDPE has similar properties to UHMW but lower properties and prices. Ideal for tubing, hose, synthetic rope, and similar materials that have less demanding wear and load requirements.

Ceram-P is ceramic filled UHMW recommended for high load and severe sliding abrasion. It is a shatter resistant alternative to sintered ceramic but substantially heavier and more expensive than UHMW.

Esheaves.com offers custom solutions engineered to meet the exact requirements of your application. From the strength and durability of a nylon sheave, to the rapid shipping and stock availability of Q sheaves, we will help you meet any challenge. If you don’t see the customizable options you need, we’ll engineer a complete, original solution just for you!

Know the sheave material you need? Visit the eSheaves shop to select from a variety of sizes, materials, and bearing types in stock and ready to ship.

Wire ropes are frequently used in elevators, cranes, bridges, aerial ropeways, mine hoisting, and so on. Personnel, materials, cargo, etc. are lifted by steel wire ropes in a vast variety of material handling systems. Carbon steel rods are drawn to make steel wires with different shapes and sizes. The very high strength of the rope wires allows wire ropes to endure large tensile loads and to run over sheaves with relative small diameters. One or several layers of steel wires laid helically around a center wire form a strand. Traditional stranded steel wire ropes have six or eight strands wound around a core. Rotation resistant ropes have higher number of strands in order to resist rotation (Feyrer, 2015). Cars and counterweights are suspended by steel wire ropes in traction elevators. That is, steel wire ropes are used to lift personnel and freight in the car of the elevator (Janovsky, 1999). In cranes, ropes are used to lift, convey, and discharge heavy goods from one location to another location within a specific area. Crane ropes are selected to maintain a certain lifetime period in service (Suner, 1988). A Koepe (friction) system is often used in mine hoisting to lift heavy loads from deep shafts by means of steel wire ropes with large diameters (Onur, 2012). Wire ropes deteriorate gradually as a result of normal running or misuse while operating. Those deteriorations exhibit themselves in different ways after a certain period of time. Mostly, degradations that occur on steel wire ropes are due to fatigue. Furthermore, under almost all operational conditions, wire ropes are subjected to fatigue due to alternate bending and longitudinal movements. The fatigue in ropes can be divided into two main categories in general. One of the dominant fatigue types in rope applications is tension-tension fatigue in which ropes are subjected to alternate tensile load with time, such as with suspension bridges. Another type is known as bending over sheave (BoS) fatigue in which ropes are subjected to dynamic repetitive bending and straightening travel due to the winding of wire rope on a drum or sheaves, such as with cranes.

Fatigue causes degradation on the rope and reduces the lifetime of steel wire ropes. Knowing the lifetime of the rope is an important issue in terms of occupational safety. Rope manufacturers are also eager to extend their rope’s lifetime. Therefore, it is an important research topic to investigate the fatigue lifetime of steel wire ropes.

This study addresses the BoS fatigue of steel wire ropes. Numerous studies have been conducted to shed light on the effect of BoS fatigue on the lifetime of the steel wire ropes.

Gibson et al. (Gibson et al., 1974) performed bending fatigue tests by using 6x36 Warrington Seale rope with a steel core, 6x24 Warrington Seale rope with a fiber core, and 6x26 Warrington Seale rope with a steel core. Each rope has right regular lay. The 6x24 Warrington Seale rope is made of galvanized high carbon steel, and the other two ropes are made of bright high carbon steel. Samples with diameters of 12.7 millimeters (1/2 inch) and 19.05 millimeters (3/4 inch) were used for bending fatigue tests. According to the results, the 6x36 Warrington Seale rope and 6x26 Warrington Seale rope had almost the same fatigue performance, while the 6x24 Warrington Seale rope had lower values. The authors explained that this rope may be used in applications where a low modulus of elasticity is desired. Therefore, it should not be used in applications where better fatigue performance is expected. The authors also measured temperature fluctuations at 45.72 m/min (150 feet/min) and declared that a low diameter ratio and high tensile load would lead to a rapid increase in temperatures occuring on the rope (Onur, 2010).

A sheave is a pulley, with a grooved wheel for holding a wire rope, belt, or rope. Wire rope sheaves are designed for holding wire ropes in place. Grooved wheels spin on a bearing or axle inside the frame of the block. This allows the wire rope to move freely, thereby minimizing wear and friction on the wire rope. Wire rope sheaves are primarily used in facilitating safe and smooth operation of overhead crane hoists. Wire ropes can wear prematurely and can cause other dangerous hazards.

Wire rope sheaves are different from standard sheaves in terms of construction and operation. They are smooth and free from defects, which may cause rope damage. The sheaves which can be momentarily unloaded has to be locked with close-fitting guards in order to guide the rope back into the groove when the load is applied again. The pockets and flanges of sheaves, which are used with hoist chains, need to be of such dimensions that the chain does not bind or catch during the operation.

Founded in 1994, Konecranes is involved in the manufacture and sale of lifting equipment. It provides overhead cranes such as standard industrial, automated cranes, overhead travelling cranes, and hoists & lifting devices. These include electric wire rope hoists, electric chain hoists, manual chain hoists, and air balancers. The company has aprroximately 17,000 employees at 600 locations in 50 countries.

Certex Norway US is manufacturer of lifting products, wire products, and mooring and marine equipment. It also provides services such as maintenance, inspections, technical support, and certifications. The company has presence in Bergen, Stavanger, Kristiansand, Oslo, Trondheim, Kristiansund, Harstad, Hammerfest, Florø, and Sandnessjøen. It is a part of Lifting Solution Group under Axinter Company, which is owned by Axel Johnson Group. Lifting Solution Group has its own distribution channel in more than 15 countries in Europe with around 40 outlets.

Expansion in infrastructure and industrial sectors across the globe is expected to drive the demand for wire ropes across the world. There exists replacement demand for wire ropes and wire rope sheaves. There is strong requirement of wire rope in oil & gas industry for meeting the needs of offshore exploration drilling rigs, offshore cranes, offshore winches, and land-based exploration drilling rigs and their servicing. Increasing demand from crane and lifting industry is anticipated to boost the demand for wire rope sheaves during the forecast period. Lifting products that use wire rope sheaves are container handling cranes, telescopic mobile cranes, mobile lattice boom cranes, overhead hoist/gantry cranes, bulk unloader cranes, ladle cranes, and piling cranes.

The wire rope sheaves market is highly susceptible to fluctuation in prices of raw materials, as almost 95% of wire rope sheaves constitute iron or steel. These prices are fluctuated on the basis of shipping costs, market maturity, energy costs, and supply demand scenario. Thus, volatility in prices of raw materials may adversely impact the purchasing decision of wire rope sheaves, since these are heavy duty products which does not easily tend to fail as these products are tested while manufacturing to almost 1.5 – 2 times its rating capacity.

Stepped hub design proves better.The McKissick hub is stepped to eliminate stress failure in the weld, common in traditional hub designs. The hub is pressed into place with complete metal-to-metal contact. This helps ensure an accurate alignment to the hub’s axis so there’s no wobble or lopping of the rotating sheave. The precision aligned hub/sheave wheel combination adds to the bearing life and keeps the sheave on the job longer.

Closed die upset and roll forged – not split.Upsetting and roll forging forms the groove and flange walls in multiple steps, eliminating the need to split and weaken the groove. This exclusive forging process adds extra strength to the critical groove section. You can count on a McKissick sheave to give maximum life performance, because its forged to distribute the wire rope forces evenly over an accurately formed load surface. Plus, uniformity of the roll forged groove adds longer wire rope life.

McKissick roll forged sheaves are available in a full range of sizes fom 305mm to 1829mm, and bearing styles and prices that best fit your application. Crosby also manufactures custom McKissick sheaves and can make minor modifications to standard sheaves as needed for special applications.

Solid steel – no castings.Every McKissick sheave starts as a single piece of solid carbon steel plate. It’s flame - cut from closely checked stock, so there’s no inherent web/rim flaw as you find in cast sheaves. There’s better balance and better distribution of forces with a McKissick roll forged sheave too. Casting can result in groove wall variations - either to thick or to thin - causing uneven stresses and early failure.

Flame hardened groove.Crosby’s hardening technique is a science. It provides a precise maximum hardness for wear-resistance across the wire rope contact area. The McKissick sheave groove is flame hardened to a minimum 35 Rockwell C for a 140°, contact area with the wire rope. The solid steel plate provides the ideal surface for flame hardening an a closer tolerance fit to the wire rope fatigue and wear.

McKissick sheaves come in a variety of sizes to suit your specific applications. Check the tables for the size, bearing style etc. that best fit your application. For applications that require unique specifications Crosby can make minor modifications to many of the sheaves listed at a reasonable charge. We can also custom design and manufacture sheaves to your exact requirements. Contact Certex Sales to order McKissick sheaves and include the stock number and quantity. For special requirements or custom designed sheaves, furnish the following important information:

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Multi-layer drum systems should use strand- or swage compacted Python® rope constructions having a steel core. The higher fill factor of such rope constructions will offer a greater resistance to crushing and flattening than conventional rope types. This is particularly important for boom hoist ropes on lattice boom cranes at the cross over point from one rope winding to the next.

Cranes equipped with multi-layer drum systems which require rotation-resistant or non-rotating rope are best served with Python Compac® 18 and Python Compac® 35. To further reduce drum crushing have the rope layers wound onto the drum with about 5-10% of the WLL and avoid that the first layer unspools and re-spools without tension. This would cause a ‘soft’ bottom layer which will flatten rather quickly.