NOISE DAMPENING GREASE

Undesirable squeaks and rattles caused by vibration in operational conditions is a common problem faced by auto and component manufacturers. The degree of noise dampening is influenced by selecting a lubricant that combines the appropriate base oil viscosity and thickener system to create the desired shear resistance, reduce stick slip and the resulting noise.

Damping vibrations and optimising friction values are critical for reducing undesired noises. BECHEM’s range of noise dampening lubricants for interior automotive components allow controlled movements consistently and significantly improve driving comfort. These noise dampening lubricants ensure a thick, high resistance film to cushion excessive movement and significantly reduce noise level.

NOISE DAMPENING GREASE

Synthetic grease with good noise dampening properties for friction partners of metal, plastic and elastomer materials. The highly adhesive XP 3000 provides consistent separating film between contact partners, thereby reducing friction and wear. The active grease has good low temperature behaviour and prevents stick slip phenomenon.

Applications: Recommended for friction partners in interior automotive components such as locking systems, sunroofs, seat adjustments, central consoles, arm rests etc.

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Berulub XP 3000

  • Automotive
    industry
  • Plain bearings
  • Noise damping
  • Low temperature
  • UV tracer
  • Compatible with plastic
Special Lithium SoapPolyalphaolefin-40 to +140

Colourless, synthetic grease with good noise dampening properties for friction partners of metal, plastic and elastomer materials. XP 719 is highly adhesive and provides a consistent separating film between contact partners, thereby reducing friction and wear. This active grease has good low temperature behaviour and prevents stick slip phenomenon. XP 719 is fuel resistant and is suitable for application on friction partners in fuel locks and systems.

Applications: Recommended to minimise rattles and squeaks caused by vibrations of friction partners in interior and exterior automotive components such as locking systems, sunroofs, seat systems, central consoles, arm rests etc.

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Berulub XP 719

  • Automotive
    industry
  • Noise damping
  • High temperature
  • Low temperature
  • Resistant to water
  • Compatible with plastic
GelEster-40 to +200

Berulub XP 746 is synthetic, transparent grease of NLGI 0 consistency with good noise dampening properties for interior and exterior automotive systems . Recommended for fricton partners of metal, plastic and elastomer materials. XP 746 is highly adhesive and provides a consistent separating film between contact partners, thereby reducing friction and wear. The water resistant grease has good low temperature behaviour and prevents stick slip phenomenon. XP 746 is fuel resistant and is suitable for application on friction partners in fuel locks and systems.

Applications: Recommended to minimise rattles and squeaks caused by vibrations of friction partners in interior automotive components such as locking systems, sunroofs, seat systems, central consoles, arm rests etc.

ProductThickenerBase OilTemp Range °CSend Your Queries
Berulub XP 746

  • Automotive
    industry
  • Noise damping
  • High temperature
  • Low temperature
  • Resistant to water
  • Compatible with plastic
GelEster-40 to +200

Adhesive, multipurpose paste with good noise dampening properties. Equipped with PTFE additives, Berulub PAL 1 provides long term lubrication even in extreme working conditions. Resistant to hot and cold water, water vapours, lactic, formic, acetic or fruit acids as well as alkaline and acedic disinfectants or cleaning agents. Berulub PAL 1 has good low temperature behaviour and prevents stick slip phenomenon.

Applications: Recommended for lubrication of telescopic mobile crane booms. Suitable for lubrication for seal stop cocks, labyrinth seals, stuffing boxes and gland packing used in large kitchens. Can be used to lubricate threaded spindles in thermostat valves.

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Berulub PAL 1

  • Low
    temperature
  • Compatible with plastic
  • High loads
  • Noise damping
  • Resistant to water
  • Corrosion protection
PolytetrafluoroethyleneEster-40 to +150

The kit contains carefully selected lubricants for specific interior automotive components of super premium cars that are prone to rattle and squeak over a period of time and operation. The ‘noise dampening kit’ is an outcome of a joint project by BECHEM in addressing the challenge of ‘undesired cabin noise’ faced by a premium car manufacturer. The selected noise dampening lubricants in the form of greases, sprays, fluids and cleaning agents have wide operating temperatures and compatible with almost all materials such as plastics, sealings, non-ferrous metals, leather etc. These special lubricants provide long term lubrication whilst insulating the contact surfaces from dust, humidity etc.

Applications: Examples of application include check arms, hinges, sunroof, ventillation flaps, switches, door & window sealings and head rests etc.

RELIABILITY THROUGH SPECIALITY

Lubricant characteristics vital for the smooth functioning of critical automotive components include,

Wide service temperature range
Automotive vehicles need to operate effortlessly in sub zero environments as well hot sweltering conditions. Correspondingly, the lubricants used in various critical automotive components also need to perform in extreme temperatures

Material compatibility
At high temperatures, plastic composites tend to diffuse and lose their inherent characteristics by borrowing from or combining with ingredients of contacting surface or lubricating medium. Migration of the lubricant molecules inside the plastic composite result in the undesired affects of swelling and softening of plastic material

Electrical compatibility
Modern day automobiles contain host of electrical components such as motors, actuators and switches. These components also contain moving surfaces and need to be lubricated to avoid severe electric arc formation and jaded surfaces

Durability and corrosion protection
The lubricant has to form a protective film around the contacting surfaces and prevent corrosion and wear against the odds of water, dirt and varying loads.

Noise dampening ability
Undesirable squeaks and rattles caused by vibration in operational condition is a common problem faced by auto and component manufacturers in spite of good design. These squeaks can be muted by use of specialized automotive lubricants.

Life time lubrication
In many automotive applications intermittent lubrication is not possible, the lubricant will have to maintain its composition until lifetime of the component

Environmental compatibility
Lubricant should be devoid of heavy and toxic metals.

 

FREQUENTLY ASKED QUESTIONS

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.

Significance:

  • 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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