Triukšmo guoliai

Triukšmą slopinantys tepalai

Tyliai dirbančio guolio tepimas

 Garsą slopinantis tepalas                    

Rūšis

Darbinės temperatūros, ºC

Lašėjimo temperatūra, ºC

Pagrindas

Panaudojimas, savybės

 

Molyduval

Nora LM 2

 

 

-30 iki +150

 

 

 

190

 

 

Min/Li

Modernus riedėjimo guolių triukšmą slopinantis, plataus temperatūrinio diapazono tepalas. Kelis  kartus ilgesnis keitimo intervalas nei įprastų tepalų. Ypatingai švarus, tolygios struktūros,  užtikrina tylų guolių sukimąsi dideliais greičiais. Ventiliatorių, vėjo jėgainių propelerių guoliai.

 

Molyduval

Nora LKA 1 HV

 

 

-40 iki +220

 

 

 

280

 

 

Sintet/

LiCplx

Modernus sintetinis, ekstremalių temperatūrų ir ypač didelių apsukų

tylių guolių tepalas.

Elektros motorų guoliams aukštose temperatūrose ir drėgmėje. Tyliam įrangos darbui ypač žemose paleidimo temperatūrose.  Rusvas. KPHC1R-40

 

Molyduval

Nora UA 2

 

 

-50 iki +220

 

 

>250

 

 

Sintet/

polikarbamid

 

Modernus sintetinis, atsparus didžiausioms termo apkrovoms ir tolygiai tylų guolio darbą užtikrinantis tepalas. Linkusių i perkaitimą elektros variklių, mažų varikliukų, šaldytuvų, instrumentų, elektronikos ir optikos ventiliatorių guoliams, jungikliams.

Triukšmingumą mažinančio tepalo parinkimas

Comfort and safety are in demand in the automotive industry. New generation car engines and gearboxes have become more silent. While the reduction of functional noise creates a comfortable environment, the other noises and vibrations start to be noticeable far the driver and passengers. Additionally, with the advent of increasing autonomous functionality, further reducing extraneous noise and vibration is needed to help insure proper functioning of and communication between critical sensors and modules. Nowadays automotive manufacturers pay lots of attention to NVH (Noise, Vibration and Harshness) while designing a car. The noises predominately occur when two mating materials like plastic, rubber or leather rub and slide against each other. Examples include armrests, door panels, switches, gears, clips and seat sliding guides. There are different approaches to how to control NVH and eliminate noise. One of the main concept is friction reduction as well as stick-slip prevention and this is where lubrication plays an important role. The latest technologies in this field include noise dampening greases with a high standard of low temperature performance and very low oil bleeding, and dry lubrication like anti-friction coatings far stick-slip prevention.

Molylub Low Noise Bearing Grease

Characteristics

• Excellent silence performance can effectively inhibit the abnormal noise when the bearings

are running

•  Excellent low temperature properties can reduce the mechanical torque at low temperatures

•  Excellent rust resistance performance can prevent the rust and corrosion of bearings during the

running process

Applications

•  It is suitable for lubricating various types of miniature, small and medium-sized low noise

bearings at low temperatures, and also suitable for the lubrication and protection of other

ordinary small and medium-sized motor bearings

•  Not recommended using this product under the condition of low speed and heavy loads

•  Applied temperature range: -40ºC~130ºC

In recent years, background noise in vehicle interiors has tended to decrease more and more in hybrid and luxury cars. As a result, there is an increased demand for noise reduction capabilities of automotive grease, in addition to the original lubrication function. In this study, we report the mechanism of noise reduction in car air conditioners, and describe a new grease that meets both excellent noise reduction and low temperature performance.
In the collision model, sound pressure is generated by collision velocity and material properties (ex. Poisson ratio, Young's modulus). When the grease is applied over the area around the collision point, collision velocity is reduced because of the viscous resistance of the grease. Therefore, it is effective to use highly viscous base oil for noise reduction. However, the base oil also harmfully influences low temperature performance. That is to say, new grease for air conditioner needs two conflicting properties of low viscosity under low temperature and high viscosity under collision pressure. To accomplish this subject, we improved high-pressure viscosity. High-pressure viscosity is shown in the Barus equation, and affected by atmospheric viscosity and viscosity-pressure coefficient, alpha. Therefore, to meet both excellent noise reduction and low temperature performance, we tried to refine alpha of the base oil.
To refine alpha, we focused base oil refining by high-alpha-polymer addition. We selected PAO(Poly-Alpha-Olefin) and polybutene as base oil that has high alpha and few weaknesses. A new noise reducing grease comprising a mixture PAO and polybutene as the base oil and silica as the thickener has been developed. This grease simultaneously demonstrates excellent noise reducing and low temperature performance.