steel wire rope lubrication oil free sample

Wire rope forms an important part of many machines and structures. It is comprised of continuous wire strands wound around a central core. There are many kinds of wire rope designed for different applications. Most of them are steel wires made into strands wound with each other. The core can be made of steel, rope or even plastics.

Wire ropes (cables) are identified by several parameters including size, grade of steel used, whether or not it is preformed, by its lay, the number of strands and the number of wires in each strand.

A typical strand and wire designation is 6x19. This denotes a rope made up of six strands with 19 wires in each strand. Different strand sizes and arrangements allow for varying degrees of rope flexibility and resistance to crushing and abrasion. Small wires are better suited to being bent sharply over small sheaves (pulleys). Large outer wires are preferred when the cable will be rubbed or dragged through abrasives.

There are three types of cores. An independent wire rope core (IWRC) is normally a 6x7 wire rope with a 1x7 wire strand core resulting in a 7x7 wire rope. IWRCs have a higher tensile and bending breaking strength than a fiber core rope and a high resistance to crushing and deformation.

A wire strand core (WSC) rope has a single wire strand as its core instead of a multistrand wire rope core. WSC ropes are high strength and are mostly used as static or standing ropes.

Wire ropes also have fiber cores. Fiber core ropes were traditionally made with sisal rope, but may also use plastic materials. The fiber core ropes have less strength than steel core ropes. Fiber core ropes are quite flexible and are used in many overhead crane applications.

The lay of a wire rope is the direction that the wire strands and the strands in the cable twist. There are four common lays: right lay, left lay, regular lay and lang lay. In a right lay rope the strands twist to the right as it winds away from the observer. A left lay twists to the left. A regular lay rope has the wires in the strands twisted in the opposite direction from the strands of the cable. In a lang lay rope, the twist of the strands and the wires in the strands are both twisted the same way. Lang lay ropes are said to have better fatigue resistance due to the flatter exposure of the wires.

Wire ropes are made mostly from high carbon steel for strength, versatility, resilience and availability and for cost consideration. Wire ropes can be uncoated or galvanized. Several grades of steel are used and are described in Table 1.

Steel cable wire is stiff and springy. In nonpreformed rope construction, broken or cut wires will straighten and stick out of the rope as a burr, posing a safety hazard. A preformed cable is made of wires that are shaped so that they lie naturally in their position in the strand, preventing the wires from protruding and potentially causing injury. Preformed wire ropes also have better fatigue resistance than nonpreformed ropes and are ideal for working over small sheaves and around sharp angles.

Lubricating wire ropes is a difficult proposition, regardless of the construction and composition. Ropes with fiber cores are somewhat easier to lubricate than those made exclusively from steel materials. For this reason, it is important to carefully consider the issue of field relubrication when selecting rope for an application.

There are two types of wire rope lubricants, penetrating and coating. Penetrating lubricants contain a petroleum solvent that carries the lubricant into the core of the wire rope then evaporates, leaving behind a heavy lubricating film to protect and lubricate each strand (Figure 2). Coating lubricants penetrate slightly, sealing the outside of the cable from moisture and reducing wear and fretting corrosion from contact with external bodies.

Both types of wire rope lubricants are used. But because most wire ropes fail from the inside, it is important to make sure that the center core receives sufficient lubricant. A combination approach in which a penetrating lubricant is used to saturate the core, followed with a coating to seal and protect the outer surface, is recommended. Wire rope lubricants can be petrolatum, asphaltic, grease, petroleum oils or vegetable oil-based (Figure 3).

Petrolatum compounds, with the proper additives, provide excellent corrosion and water resistance. In addition, petrolatum compounds are translucent, allowing the technician to perform visible inspection. Petrolatum lubricants can drip off at higher temperatures but maintain their consistency well under cold temperature conditions.

Various types of greases are used for wire rope lubrication. These are the coating types that penetrate partially but usually do not saturate the rope core. Common grease thickeners include sodium, lithium, lithium complex and aluminum complex soaps. Greases used for this application generally have a soft semifluid consistency. They coat and achieve partial penetration if applied with pressure lubricators.

Petroleum and vegetable oils penetrate best and are the easiest to apply because proper additive design of these penetrating types gives them excellent wear and corrosion resistance. The fluid property of oil type lubricants helps to wash the rope to remove abrasive external contaminants.

Wire ropes are lubricated during the manufacturing process. If the rope has a fiber core center, the fiber will be lubricated with a mineral oil or petrolatum type lubricant. The core will absorb the lubricant and function as a reservoir for prolonged lubrication while in service.

If the rope has a steel core, the lubricant (both oil and grease type) is pumped in a stream just ahead of the die that twists the wires into a strand. This allows complete coverage of all wires.

After the cable is put into service, relubrication is required due to loss of the original lubricant from loading, bending and stretching of the cable. The fiber core cables dry out over time due to heat from evaporation, and often absorb moisture. Field relubrication is necessary to minimize corrosion, protect and preserve the rope core and wires, and thus extend the service life of the wire rope.

If a cable is dirty or has accumulated layers of hardened lubricant or other contaminants, it must be cleaned with a wire brush and petroleum solvent, compressed air or steam cleaner before relubrication. The wire rope must then be dried and lubricated immediately to prevent rusting. Field lubricants can be applied by spray, brush, dip, drip or pressure boot. Lubricants are best applied at a drum or sheave where the rope strands have a tendency to separate slightly due to bending to facilitate maximum penetration to the core. If a pressure boot application is used, the lubricant is applied to the rope under slight tension in a straight condition. Excessive lubricant application should be avoided to prevent safety hazards.

Some key performance attributes to look for in a wire rope lubricant are wear resistance and corrosion prevention. Some useful performance benchmarks include high four-ball EP test values, such as a weld point (ASTM D2783) of above 350 kg and a load wear index of above 50. For corrosion protection, look for wire rope lubricants with salt spray (ASTM B117) resistance values above 60 hours and humidity cabinet (ASTM D1748) values of more than 60 days. Most manufacturers provide this type of data on product data sheets.

Cable life cycle and performance are influenced by several factors, including type of operation, care and environment. Cables can be damaged by worn sheaves, improper winding and splicing practices, and improper storage. High stress loading, shock loading, jerking heavy loads or rapid acceleration or deceleration (speed of the cable stopping and starting) will accelerate the wear rate.

Corrosion can cause shortened rope life due to metal loss, pitting and stress risers from pitting. If a machine is to be shut down for an extended period, the cables should be removed, cleaned, lubricated and properly stored. In service, corrosion and oxidation are caused by fumes, acids, salt brines, sulfur, gases, salt air, humidity and are accelerated by elevated temperatures. Proper and adequate lubricant application in the field can reduce corrosive attack of the cable.

Abrasive wear occurs on the inside and outside of wire ropes. Individual strands inside the rope move and rub against one another during normal operation, creating internal two-body abrasive wear. The outside of the cable accumulates dirt and contaminants from sheaves and drums. This causes three-body abrasive wear, which erodes the outer wires and strands. Abrasive wear usually reduces rope diameter and can result in core failure and internal wire breakage. Penetrating wire rope lubricants reduce abrasive wear inside the rope and also wash off the external surfaces to remove contaminants and dirt.

Many types of machines and structures use wire ropes, including draglines, cranes, elevators, shovels, drilling rigs, suspension bridges and cable-stayed towers. Each application has specific needs for the type and size of wire rope required. All wire ropes, regardless of the application, will perform at a higher level, last longer and provide greater user benefits when properly maintained.

Lubrication Engineers, Inc. has found through years of field experience, that longer wire rope life can be obtained through the use of penetrating lubricants, either alone or when used in conjunction with a coating lubricant. Practical experience at a South African mine suggests that life cycles may be doubled with this approach. At one mine site, the replacement rate for four 44-mm ropes was extended from an average 18.5 months to 43 months. At another mine, life cycles of four 43-mm x 2073 meter ropes were extended from an average 8 months to 12 months.

In another study involving 5-ton and 10-ton overhead cranes in the United States that used 3/8-inch and 5/8-inch diameter ropes, the average life of the ropes was doubled. The authors attribute this increased performance to the ability of the penetrating lubricant to displace water and contaminants while replacing them with oil, which reduces the wear and corrosion occurring throughout the rope. A good spray with penetrating wire rope lubricant effectively acts as an oil change for wire ropes.

In these examples, the savings in wire rope replacement costs (downtime, labor and capital costs) were substantial and dwarfed the cost of the lubricants. Companies who have realized the importance of proper wire rope lubrication have gained a huge advantage over those who purchase the lowest priced lubricant, or no lubricant at all, while replacing ropes on a much more frequent basis.

Developed as a service tool, the Lincoln Wire Rope Lubricator is attached periodically to equipment on a monthly, quarterly or other cycle to lubricate wire ropes. Lubrication intervals should be determined according to rope manufacturer specifications. The life cycle of a steel wire rope that has been periodically lubricated is approximately six to eight times longer than a wire rope that has not been lubricated. Specifically for Wire Rope Lubricator applications a biodegradable grease LGTE 2 is available. The grease is environmentally acceptable and certified with Ecolabel.

Also, lubricating a wire rope while in service helps to prevent corrosion of the wires. Corrosion can be internal and external, and it often is caused by acids, alkaline waters, salt air, humidity, fumes, and abrasive and industrial environments in general.

LUBEGARD Wire Rope Lubricants are patented, aquatically non-toxic & biodegradable. They contain a unique blend of corrosion inhibitors, thickeners and wear reducers. Both are ideal for all types of wire ropes and chains in a variety of services and environments.

Using the correct lubricant with the appropriate application method can not only maximise the wire rope life but can also eliminate costly replacements and improve safety.

The fluidity of the lubricants helps to ensure that the rope strands are well lubricated, reducing internal wear caused by the metal-to-metal contact occurring when the wires slide or bend around a drum or sheave.

The Wire Rope Lubricants and Grease range prevent corrosion by displacing moisture and forming a thin barrier of continuous lubricant film protecting against the elements.

Crosby’s Vitalife®products are the preferred wire rope lubricants in the industry because of their ability to penetrate into wire rope and displace water and contaminants, thus reducing wear and corrosion throughout the rope.Available in a variety of container sizes.

Whitmore’s Wire Rope Lubricant products also coat these strands to prevent friction and wear. This results in longer wire rope life, less downtime for rope changes and more production.

Whitmore’s Wire Rope Lubricant is easily pumpable at temperatures down to -25°F (-35°C). Its nondrying film remains flexible in the most extreme weather conditions, which eliminates flaking and peeling.Whitmore’s Wire Rope Lubricant can be used to lubricate all sizes of wire rope, as well as chains, leaf springs and other applications where penetrating oil is needed. It may be applied by hand or automatic lube system.

Proper lubrication of your wire rope, chain and cable can safely extend its operational life regardless of application. Cranes, elevators, shovels, drilling rigs, suspension bridges and draglines are some of the many applications that use wire rope, chain or cable to perform work such as pulling, dragging or hoisting. These applications often are exposed to harsh environmental conditions, including extreme weather. Lubrication Engineers can help your wire rope, chain and cable last longer and operate safely by implementing a lubricant reliability program and recommending the right lubricants for the job.

Most wire ropes are lubricated during the manufacturing process, but this lubricant will not last the entire life of the rope. When looking for a lubricant to relubricate your wire rope, choose one that contains no acids or alkalis, possesses the adhesive strength to stay on the rope, can penetrate between wires and strands, has high fluid film strength, resists oxidation and remains pliable. It is important to remember that most wire ropes fail from the inside out. Corroded rope can be a safety hazard, as there is no way to determine its remaining strength and life. Proper lubrication will help prevent deterioration of wire rope due to rust and corrosion.

Because most wire ropes fail from the inside, it is critical to ensure the center core receives sufficient lubricant. LE recommends a combined regimen in which a penetrating lubricant is used to saturate the core, followed by a coating lubricant to seal and protect the outer surface. LE offers several penetrating and coating type wire rope lubricants to suit your specific needs.

Penetrating lubricants contain an evaporative solvent that facilitates migration of the lubricant into the core of the wire rope, then evaporates, leaving behind a heavy lubricating film that protects and lubricates each strand.

Wirelife Almasol Coating Grease (451-453) is a soft, semifluid calcium-based grease designed to coat wire rope as well as moving chain and cable parts to ensure long life and smooth, quiet operation. Its tacky, water-resistant characteristics enable it to adhere strongly to rapidly moving parts, seal out damaging moisture, protect against premature wear and shield metal against corrosive attack.

Typical Applications: Wire rope, chain links, pins, bushings, cable sheave bushings, cables, open and closed silent and roller chains, and small, slow-turning gearboxes that require a semifluid lubricant

Wirelife Almasol Coating Lubricant (2002) is a fluid wire rope lubricant that provides a tough outer coating to seal and protect against fretting corrosion, wear and rust – even under extreme load and moisture. It seals and protects better than any product available. When used in conjunction with Wirelife Monolec Penetrating Lubricant, maximum protection and wear reduction is achieved.

Wirelife Almasol Syn Coating Lubricant (2022) is an extremely tacky, nonasphaltic synthetic lubricant with exceptionally high film strength. Perfect for extreme environments and conditions, it is the ultimate outer surface protector for wire rope and cable and comes from the same advanced technology that LE developed to protect large open gears in the mining and quarry industries. It derives its high load-carrying capacity from its synergistic blend of an extreme pressure additive and Almasol, LE’s exclusive wear-reducing additive.

Wirelife Monolec Penetrating Lubricant (2001) has excellent corrosion resistance and high load-carrying (EP) properties. It penetrates to the core of wire ropes, whether they are running or stationary. It is also excellent as a penetrating lubricant for chains of all sizes and works well in a variety of other industrial applications. When used in conjunction with Wirelife Almasol Coating Lubricant, maximum protection and wear reduction is achieved.

It contains a petroleum solvent to enhance its ability to penetrate. The solvent evaporates, leaving behind a film of heavy-bodied lubricant that protects and lubricates each strand and resists leakage from the wire rope core. Available in bulk sizes or in an aerosol version.

Typical Applications: All stationary or moving wire ropes or cables under heavy loads; chains of all sizes; mining and construction applications such as standing and running lines, draglines, cranes and derricks; marine applications such as cranes, hoists and drilling rigs; any other application that requires excellent rust protection for steel parts.

Designed for marine environments and other applications where environmental concerns require the use of a very low toxicity wire rope and chain lubricant, LE’s Wirelife Low Tox Penetrating Lubricant (2011) has excellent load-carrying capability and provides outstanding protection against rust, while having the lowest possible toxic effect on the environment.

Earthwise EAL Wire Rope Grease (3353) is recommended for use in applications on or near the waterways. It is an EAL and meets the specifications required by the EPA’s Vessel General Permit (VGP). It is readily biodegradable, exhibits minimal aquatic toxicity and will not accumulate in the cells of fish and other aquatic life forms. It is a soft, semifluid formulation designed to coat wire rope as well as moving chain and cable parts to ensure long life and smooth, quiet operation. Its semi-tacky, water-resistant characteristics enable it to adhere to the application and seal out damaging moisture and protect against rust formation.

Typical Applications: Applications near or around waterways including: Wire rope; chain links, pins and bushings; cable sheave bushings, bearings and strands; open and closed silent and roller chains. Ideal for use in automatic lubrication systems.

LE is happy to offer industrial lubricant and reliability recommendations for a variety of applications, and to provide product-specific data on all of our items to help you make the right decision. To learn more about our wire rope lubricants, wire rope lubricators as well as our other enhanced lubricants and lubricant reliability products, please

Wire rope forms an important part of many machines and structures. There are many kinds of wire rope designed for different applications. The wire rope’s performance is influenced by several factors, including type of operation and environment which can accelerate corrosion, oxidation, and wear. Hence, proper, and adequate lubricant application in the field is paramount. Essentially, wire rope lubricants have three principal functions, and it is to reduce friction, provide wear protection and corrosion protection.

LUBEGARD Wire Rope Lubricant is patented, aquatically non-toxic & biodegradable. It contains a unique blend of corrosion inhibitors, thickeners and wear reducers. Ideal for all types of wire ropes and chains in a variety of services and environments. Wire Rope Lubricant is biodegradable, non-toxic, and leave no oil slick! Biodegradable (EPA Shake Flask Test, EPA 560/6-82-003 with unacclimated inoculum) / Aquatically non-toxic (EPA 600/4-90-027, Rainbow trout test). Forms liquid protective layer, does not foul automatic applicators, Excellent for manual application, Water and salt water resistant. Can be applied in many ways; spray, wipe, dip or brush it on. It can also be applied with various low viscosity core lubricators. Apply as necessary for lubrication and corrosion protection.

CRC chain and wire rope lube is a special blend of synthetic lubricants, solvents and molybdenum designed to keep chains and wire rope in peak operating condition. With a low viscosity and wet film, chain and wire rope lube penetrates deeply between chain links and wire strands to reduce friction and wear that cause metal fatigue. Chain and wire rope lube also contains a tackifier that enables the lubricant to cling tenaciously to metal surfaces without increasing the viscosity. Regular use of chain and wire rope lube will help inhibit corrosion, reduce load stress and prevent wire strands from becoming brittle and fraying. Recommended for use as a lubricant and corrosion inhibitor on low speed conveyor and drive chains, hoists, winches, pulleys, cushion pins, rollers, garage doors, bushings, seals, o-rings, and come-alongs. Low viscosity. Provides the ability to penetrate and thoroughly coat interior wire strands and cushion pins. Material safety data label. Provides instant access to current safety information should an accident or OSHA inspection occur. Helps comply with OSHA hazard communications standard 29 CFR 1910.1200.

The oil/grease that is added to the steel wire rope during production is only sufficient to protect the steel wire rope during the storage period and initial use. The steel wire rope must be lubricated regularly.

Thorough lubrication is extremely important for the steel wire rope’s life expectancy, as the purpose of lubrication is partly to protect the steel wire rope against rust, and partly to reduce friction between the wires and the strands in the steel wire rope. Friction is also thereby reduced between the steel wire rope and the surfaces with which it comes into contact.

The lubricant used must be free of acids and must not have a destructive effect on the steel wires, the fibre core and the environment. The lubricant must have a consistency that enables it to penetrate the core and the strands. The steel wire rope must be cleaned before lubrication.

To achieve maximum lubrication effect, the lubricant should be applied during operation, at a sheaf or on the drum, as this is where the steel wire rope opens up and makes it easier for the lubricant to penetrate.

Randers Reb has developed a special lubricating oil, Randers WIRE OIL Type 01, which satisfies the special requirements for lubrication of steel wire ropes. The oil has excellent penetrative and lubrication qualities. It is also water-resistant and contains additives that dissolve rust and prevent further formation of rust during storage and operation. The oil is easily applied with a brush.

The following guidelines cover possible points that should be checked in conjunction with the inspection of steel wire rope. This is not a complete manual, nor is it an alternative to the relevant norms and standards.

All steel wire ropes become elongated when loaded (see also “Steel Wire Rope Elongation”, page 8-28). The elongation of a steel wire rope during its lifetime can be divided into three phases:

Phase 1: The new steel wire rope becomes longer quite naturally during its initial period of use. This partly because of the loading, and partly because the steel wire rope settles.

Phase 2: When the steel wire rope has settled and for most of its lifetime, the steel wire rope does not become much longer. Elongation during this phase is mainly due to wear.

Phase 3: The steel wire rope suddenly becomes longer very quickly. This means that the steel wire rope is deteriorating rapidly due to such causes as advanced wear and fatigue. The steel wire rope must be replaced immediately.

Every noticeable reduction of the steel wire rope’s dimensions in comparison with its original dimensions indicates a deterioration in the steel wire rope. The reduction may be due to such causes as:

Rust is just as important a factor as wear and tear in terms of evaluating the steel wire rope’s condition. Rust is normally caused by poor maintenance of the steel wire rope and promotes quicker fatigue in the wires (fragility/creation of cracks).

A “bird’s nest” (the strands rising in the same place) is created by such actions as the steel wire rope being subjected to torsion (rotated), sudden unloading, running through sheaf grooves that are too small and/or winding on a drum that is too small (fig. 44). The steel wire rope must be replaced immediately.

Local wear and tear is most often caused by poor winding. All fittings and splicings must also be inspected for wear or broken wires, loose or split strands, wear or cracks in fittings, etc.

If the wire fractures are serious, the steel wire rope must be replaced immediately. If you are in any doubt as to whether the steel wire rope should be scrapped or not, please contact your local salesman or our Technical Department as soon as possible.

Part One in this series appeared in our June issue and dealt with early and more recent investigations which have proved the importance of wire rope lubrication. Part Two (July issue) covered the duties and properties of wire rope lubricants.

Wire Rope lubrication allways has been a time consuming, dirty and unefficient job. But most of all unreliable because the fact that manual greasing has no penetrating effective lubricationas a result .

The Wire Rope Lubricator is designed to lubricate steel ropes in a reliable manner , deep into the strings under high pressure. This is done in a semi-automatic way , whereas the ropes passes trough the grease applicator which is fixed. The ropes do not to be dismounted from the installations. Using the Wire Rope Lubricator , the life of the ropes as well as of the rope equipment is extended.