STEEL

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LUBRICATION OF FINISHING MILL ROLL BEARINGSQUAKERTEK™ VERKOMAX EP-12

THE SOLUTION

CHALLENGES » A large steel mill, was

currently using a grease in the roll bearings on their finishing mill, that was causing them to have 24 bearing failures a year

» The mill wanted to make a change that would extend the lubrication periods, reduce grease consumption and even further reduce bearing failures

© 2016 Quaker Chemical Corporation. All Rights Reserved.

» Verkol Lubricants, a Quaker Chemical Company, assessed the mill’s situation, and introduced QUAKERTEK™ VERKOPLEX EP-2, a lithium complex grease, reducing bearing failures to 5-6 a year.

» After 8 years of using QUAKERTEK™ VERKOPLEX EP-2, the mill wanted to run a trial with the main purpose of optimizing grease consumption without causing wear problems, and also to: - Extend grease lubrication cycles - Avoid grease spillage and residue - Reduce the number of bearing failures

» The trial was designed so the bearings would be greased one time with QUAKERTEK™ VERKOMAX EP-12, calcium sulfonate complex grease, and then checked when 10.000tn, 15.000tn, and 20.000tn of steel was rolled. The chart and pictures below shows how the bearings looked at the evaluation points. At each point the grease layer becomes thinner, but grease still remains in the space between the rolling elements

BEARINGS TARGET (tn) REACHED (tn)

10.000 9.007

15.000 15.928

20.000 22.078

03.16 - V003 - EN

STEEL

quakerchem.com | 1.800.523.7010

LUBRICATION OF FINISHING MILL ROLL BEARINGSQUAKERTEK™ VERKOMAX EP-12

© 2016 Quaker Chemical Corporation. All Rights Reserved.

» QUAKERTEK™ VERKOMAX EP-12 was able to remain in place and lubricate the bearing for 22.078tn of rolled steel. At this point the trial was considered a success and ended

» Additionally, by using QUAKERTEK™ VERKOMAX EP-12 the mill was able to extend lubrication cycles and reduce grease consumption, using 4 times less grease in their finishing mill operation

The chart below shows the comparison of grease consumption for 21.000tn of rolled steel

GREASEg OF GREASE/ tn OF STEEL

QUAKERTEK™ VERKOPLEX EP-2 14.72

QUAKERTEK™ VERKOMAX EP-12 3.67

Reduction in consumption 11.05

» The reduced grease consumption, also allowed the mill to reduce the amount of grease in stock, improving the cleanliness of the workshop and reducing the risk of slip and fall injuries

» Additional benefits realized with the conversion to QUAKERTEK™ VERKOMAX EP-12 were: - Reduced hours for chock maintenance - Increased bearing life, reduced bearing stock

and bearing failures to 0-3 a year

THE PRODUCT

QUAKERTEK™ VERKOMAX EP-12 is a calcium sulfonate complex grease, very suitable for the lubrication of rolling mill bearings in the steel industry, and suitable for centralized lubrication systems.

PROCESS AND EQUIPMENT

OUTPUT TABLES

Operation Hot Strip Mill

Application Rolling bearings

03.16 - V003 - EN