Molyduval Lubricants for Trains and Rail Roads

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Molyduval Lubricants for Trains and Rail Roads

Long Life lubrication with Molyduval

In the railway sector, various specific lubricants are used, designed for all mechanisms and with different lubrication properties, including low temperatures, high loads, and environmental impacts. Here are some key categories and their properties:

Wheel Bearing Lubrication - Ensuring the Highest Standards

The lubrication of train wheels must be able to perform within a very wide temperature range, at varying speeds, and under vibrations. Lubricants intended for train wheel bearings must be certified according to the DIN EN 12081 and DIN EN 12082 standards to be used in Europe. The stringent certification approval tests include several individual tests to assess the chemical and mechanical properties of the lubricant under the most challenging conditions.

The key factor influencing the lubrication of train mechanisms is the regular costs for labor and the product itself. The total cost of ownership (TCO) of trains is primarily dependent on the lifespan of their mechanisms and future maintenance intervals. Trains and wagons require maintenance several times throughout their service life. Wheelset maintenance and repair can be particularly costly. Currently, the most popular lubricants on the market are lithium-based mineral oil lubricants, which provide lubrication for up to approximately 600,000 km of mileage or eight years of use. However, with increasing load capacities and rising cost pressures, it is already clear that such lubricant mileage will not be sufficient in the future. Therefore, attention is being drawn to heavier-type lubricants, which can provide lubrication for up to 1.3 million km of mileage or more. This can be achieved with a modern lubricant like Molyduval Pegasus LKA 2.

This synthetic lubricant is designed for high temperatures, heavy loads, and extended service intervals. Thanks to its advanced composition, Molyduval Pegasus LKA 2 forms a durable lubrication film, meaning significantly less wear and lower temperatures in roller bearings. Molyduval Pegasus LKA 2 also provides excellent protection against wear, oxidation, and corrosion. Its potential service life can exceed 1.3 million kilometers. Furthermore, Molyduval Pegasus LKA 2 is an environmentally friendly lubricant, reducing both lubricant and CO2 consumption due to extended operational times and longer lubrication intervals.

Technical Benefits at a Glance:

By instantly forming a load-resistant grease film, this special lubricant quickly separates friction components, functional surfaces, and anti-friction bearing rollers. This significantly reduces wear and extends the life of the bearings. Special additives also ensure effective corrosion protection and increase pressure and oxidation resistance, thereby extending the grease’s working life and quality. Molyduval Pegasus LKA 2 allows for significantly extended maintenance intervals.

Thanks to its unique composition of various synthetic base oils, Molyduval Pegasus LKA 2 guarantees high performance over a wide temperature range.

Molyduval rolling stock lubricants for bearings and gears:

• Molyduval Aero LE 2 is a synthetic lubricant with low-temperature resistance. It is used in lubricants that maintain fluidity and effectiveness at very low temperatures (down to -60 °C or lower).
• Supravit 92 LP bearing lubricant is based on synthetic oils such as polyalphaolefins (PAO), known for their wide working temperature range.
• High-load lubricant Mona Lisa: Used in anti-friction and high-load resistance applications, such as lubricants with solid additives (graphite, molybdenum disulfide), which reduce wear on metal surfaces. Mona Lisa is intended for bearings, while Prometheus B 282 is for gear transmissions.
• Water and moisture-resistant lubricants: Molyduval Long Life CLM 2 HV is resistant to water washout and protects against rust caused by moisture or snow.

Molyduval Contactin - lubricants for contact protection:

• Contactin CU – contact lubricant with copper for various contacts, connections, and high-capacity contacts in railways.
• Contactin SC – synthetic contact grease for the lubrication, protection, and sealing of precise mechanical contacts, including sliding switches, pressure switches, and column switches in train electronics.
• Contactin LKA 2 HV – synthetic contact grease for train electronics switches, including sliding switches, pressure switches, and column switches. It has good compatibility with plastics and rubbers, reduces tribocorrosion, and offers excellent aging and oxidation resistance.

Molyduval Aero - Low-temperature lubricants:

• Aero LE 2 is a lubricant with higher fluidity at low temperatures (down to -60 °C), often formulated using synthetic oils (PAO or esters) and additives that maintain functionality even under extreme conditions.
• Aero LKA Spray – Fully synthetic low-temperature special lubricant for the lubrication of train door mechanisms and bearings.
• Aero LM 0 M – NLGI 0 low-temperature lubricant for the lubrication of roller and bushing bearings operating at temperatures down to -50 °C. It is resistant to frost and water and contains anti-corrosion additives for additional protection against water or moisture ingress.
• Supravit 92 LP – lubricant for bearing lubrication at low and variable temperatures (down to -60 °C) for bearing mechanisms and doors.

Molyduval Carat CHM 2 Z – for wheel axles, wheelsets, screw connections, assembly, and easy disassembly. With friction coefficients ranging from 0.09 to 0.14, it meets DIN 25201 requirements for corrosion protection.

Molyduval Aladin 21 Spray – for wheel bearing seats, assembly, and protection against tribocorrosion, corrosion, and sliding surfaces.

Molyduval Multi GA 75W 90 – for train wheel gears and bearings with long change intervals. Synthetic and temperature resistant.

Molyduval Carat CHM 2 Z - lubricant for brake systems:

• This lubricant is designed for particularly high temperature fluctuations and high loads. It is resistant to oxidation, provides corrosion protection, and can also operate at high temperatures that may occur during braking.

Molyduval lubricants for train drive motor bearings:

• Molyduval Pegasus UEF 15 lubricant for high temperatures and longer lubrication intervals.
• Molyduval Polypan LKA 2 - lubricant for high temperatures and longer lubrication intervals, compatible with plastic components and replacing silicone greases.

Molyduval lubricants for automatic couplings, coupling heads, guides, electronic couplings – Supravit LKA 2 P. Lubricant for low temperatures and moving, fast mechanisms.

Greases designed for screw connections and joints with good adhesion in mechanisms include Molyduval Prometheus B 282, Molyduval Spray Z, and Molyduval Prometheus CAZ Spray. Aerosols can also be used for easier application.

For train buffers: Molyduval DCE 15

• Resistant to extreme weather conditions and moisture.
• Performs well at high temperatures.
• Provides good protection against friction, corrosion, and moisture.
• Extended lubrication intervals.

Lubricants for switches and other mechanical components:

• Molyduval Prometheus B 282 – For sliding surfaces of gears. A specially formulated lubricant that withstands high loads, prevents metal wear, and offers excellent resistance to washout and oxidation.
• Molyduval Alessa WCE 50 – For sliding plates and locks of gears, needle closures, and adjustment rod systems. Resistant to changing weather conditions and high loads, providing protection for the mechanism. Biodegradable.

Molyduval Patricia CDA 46 and Patricia CDA 68 – synthetic oil for compressors with extended lubrication time, non-evaporating and non-oxidizing.

Each type of lubricant has specific additive complexes that enhance their resistance to wear, oxidation, temperature changes, and other external conditions that may arise during railway operation.