Heavy-duty grease for highly loaded rolling bearings operating at low speeds

Klüberlub BE 41-1501 is designed to meet the requirements of rolling bearings subjected to extreme conditions. The appropriate combination of base oil and additives enables improved wear protection. FAG FE 8 tests have confirmed the effectiveness of Klüberlub BE 41- 1501 under these conditions and it is approved by various bearing manufacturers, e.g. FAG, to be used for applications in low-speed rolling bearings subjected to very high loads and shocks, for example in roller presses and bowl mill crushers.

Application areas
Klüberlub BE 41-1501 was developed for highly loaded large rolling bearings running at low speeds as well as toothed gear systems such as industrial and rail traction gear couplings. Typical applications and requirements include spherical roller bearings in roller presses, bowl mill crushers and rotary crushers in the mining and base materials industries. The operating conditions of roller bearings require use of a heavy-duty grease with high base oil viscosity with suitability for the following conditions:
• Low speed, n = 10-30 rpm
• High load, P/C = 0.25 – 0.50
• Bearing temperature approx. 50-70 °C
• Shock loading and vibration
Owing to its excellent lubricating properties, Klüberlub BE 41-1501 can also be used successfully for the lubrication of pivoting bearings, plain bearings and industrial gear couplings.

KLÜBERLUB BE 41-1501 – RELIABLE SOLUTION FOR HEAVY INDUSTRY LUBRICATION
Klüberlub BE 41-1501 is the perfect solution in heavy industries like cement and steel manufacturing. During high levels of oscillation and friction, If the lubricating film becomes adversely stressed under extreme conditions, the solid lubricants MoS2 and graphite contained in Klüberlub BE 41-1501 ensure excellent emergency lubricating properties providing additional reliability in the event of starved lubrication. The product also provides good corrosion protection and is compatible with seals, e.g. made of NBR elastomers.

WHY HEAVY INDUSTRIES CHOOSE KLÜBERLUB BE 41-1501
• Considering bearing operating temperature of 700°C, Klűberlub BE 41-1501 shows excellent film thickness
• Klűberlub BE 41-1501 has a good weld load
• Excellent additive performance.
• Klűberlub BE 41-1501 has a wide operating range
• Lower NLGI ‘1’ ensures that under load conditions, quantity of oil bleed by the thickener is more, ensuring optimum lubricating film

LEADING CEMENT PLANT DISCOVERS LONG-TERM LUBRICATION SOLUTION IN KLÜBERLUB BE 41-1501 – A CASE STUDY
At one of India’s leading large-scale cement manufacturing plants, their KHD roller press (size RP 16) had been in in operation since April 2004.
The grease used for lubricating the roller press bearings was that which was supplied by the machine manufacturer along with the machine. However, in 2006 the roller press tripped owing to high bearing temperature of the moving roller non-drive end bearing. Upon investigation following the dismantling of the machine, it was observed that the grease flow was well below desired levels, with just minimal traces of grease at some places. The bearing failure was attributed to a lack of proper lubrication.
This is when the team of experts from Klüber Lubrication stepped in to come up with a quick and enduring solution to solve the issue. After rigorous tests and trials, the team arrived at the conclusion that the solution lay in using a premium grade lubricating grease. Klüberlub BE 41-1501 has a base oil viscosity of 1500 cSt which is 1.5 times higher than the existing product. It is a NLGI Grade 1 grease which means that it has a higher oil content than NLGI grade 2 greases. The higher viscosity in combination with the NLGI 1 grade, makes for a better and more stable lubricant film, ensuring better protection for the bearing.
The results were expectedly positive. Upon switching to Klüberlub BE 41-1501, for lubricating the roller press bearings, the outcome was evident. Not only did the temperatures of the bearings reduce significantly (about 50°C), so did the sound and vibration levels.
Buoyed by the outcome, our client currently uses Klüberlub BE 41-1501 for all their operating roller presses.

KLÜBERLUB BE 41-1501 – BENEFITS TO OUR CUSTOMERS
• Excellent wear protection under the highest dynamic load conditions
• Good load-carrying capacity at low rotational speeds
• Reliable lubricant film formation at high service temperatures
• Emergency lubricating properties due to the addition of special solid lubricants
• Lower operation temperature

OEM RECOMMENDATIONS:
Klüberlub BE 41-1501 has received approvals from renowned OEM’s including:
• FLShmidt
• ThyssenKrupp
• KHD
• David Brown

KLÜBER LUBRICATION – YOUR GLOBAL SPECIALIST
Innovative tribological solutions are our passion. Through personal contact and consultation, we help our customers to be successful worldwide, in all industries and markets. With our ambitious technical concepts and experienced, competent staff we have been fulfilling increasingly demanding requirements by manufacturing efficient high- performance lubricants for more than 80 years.

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Sudha. P Senior Executive – Business Support
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