Rotary kilns and dryers in Cement and other heavy process industries operate in extreme temperatures. The rollers that support the kiln allow rotation of the kiln between 0.2 to 5 RPM. Bearings of the roller as well as the friction partners of supporting block, check plate and live ring experience high friction at extreme high temperatures with exposure to dust. Lubricant plays an important role in ensuring reducing friction and thereby ensuring break down free operation of the ‘floating live ring’. The lubricant should be able to :

  • Withstand heavy loads
  • Work as an anti seize paste under boundary lubrication conditions
  • Operate under high temperatures
  • Resist corrosion
  • Should be easily pumpable, as application to remote friction zones is critical for continuous operation

BECHEM’s range of lubricants for floating live rings in rotary kilns have set performance benchmarks and are recommended by major OE’s across the globe.

For more details, send in your query at or call us at
+91 80 66900800/01/02.

Kiln Live Ring Lubricant

Berulub VPN 13 Ring Lub

Synthetic, adhesive fluid with high dosage of solid lubricants for wear protection of heavily loaded sliding contacts subjected to high temperatures. Berulub VPN 13 Ringlub is free of solvents and heavy metals and does not form any hard or tacky residues after active life. Recommended for floating tyres of rotary kilns and dryers, large heavily loaded chains exposed to high temperatures. Also suitable for slideways threaded connections, track beams, mounting systems, transport systems and connecting elements exposed to very high temperatures

ProductTemp Range °CSend Your Queries
Berulub VPN 13 Ringlub

  • High loads
  • Chains
  • Plain bearings
  • High temperature
-30 to +1150

Applications and Properties

The unique pictograms help identify primary characteristics of the lubricant as well as key applications and industries it has been established at a glance. However the final recommendation would still have to be by the BECHEM specialist after having studied application and its operating environment. As the saying goes, ‘every problem has a unique solution, if only, one is looking for it’. This is the core philosophy to our approach towards ‘Application Engineering’ and staying true to ‘speciality’


Plain rollers

High temperature

High loads

Frequently Asked Questions

Short bytes for queries on lubricants that always bothered you

Greases are made by mixing a solid material, called a thickener, with a base oil and property enhancing additives; but it’s the oil that forms the lubrication film. For better understanding, grease thickener can be thought of as a sponge saturated with oil. Moving parts squeeze the oil out of the sponge like thickener for forming the lubrication film. Typically, the base oil constitutes the largest proportion of grease weight at about 80-90%, followed by thickener at 10 to 20% and additives under 10%.

Dropping point of a lubricating grease is an indicator of the heat resistance of the grease. and is the temperature at which the grease is no more a thickened lubricating medium. The dropping point indicates the upper temperature limit at which a grease retains its structure, not the maximum temperature at which a grease may be used.

Few greases have the ability to regain their original structure after cooling down from the dropping point.

The most important feature of a grease is its consistency. A grease that is too stiff may not get pumped into areas requiring lubrication. While a grease that is too fluid may leak out. Grease consistency depends on the type and amount of thickener used and the viscosity of its base oil. A grease consistency is its resistance to deformation by an applied force.

The measure of consistency is called penetration. Penetration depends on whether the consistency has been altered by working. Standard test procedures established by American Society for Testing and Materials International (ASTM) and accepted by industry are ASTM D 217 and D 1403, measure penetration of unworked and worked greases.

The NLGI has established consistency numbers ranging from 000 to 6, corresponding to specified ranges of penetration distance of the standard cone into the test grease. Table below lists the NLGI grease classifications along with a description of the consistency of each classification.

Viscosity: It is a measure of resistance to flow of a lubricating oil.

Viscosity index: It is defined as rate of change of viscosity with respect to temperature.


  • It is the most important property which determines the performance of lubricating oils under the influence of temperature
  • A lubricating oil should have sufficient viscosity to retain a lubricating film on the surface
  • On machine part moving at slow speeds under high pressures, a high viscous oil should be used as it better resists being squeezed out from between the rubbing parts.  Light oils can be used for lower pressures and high speeds.
  • It is not possible to maintain a liquid oil film between two moving or sliding surfaces if the viscosity is too low and hence excessive wear will occur.

The pour point of an oil is the minimum temperature at which the oil turns into semi solid and almost losses its flow characteristic. At low temperatures, the viscosity of the oil will be very high, causing the oil to resist flow. This is important in equipment that operates in a cold environment or handles cold fluids.

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