King Engine Bearings' Bi-Metal MC Series Bearings - Engine Builder Magazine
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King Engine Bearings’ Bi-Metal MC Series Bearings

King Engine Bearings has introduced a new solution for the aftermarket demand of superior service life and performance in modern engines.

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King Engine Bearings’ new “MC” bearings were developed in the wake of ongoing internal combustion engine development, resulting in ever decreasing minimum oil film thickness values, higher cylinder pressures, temperatures and loads, smaller load carrying bearing surfaces, and lighter components. Additionally, “start/stop” technology produces more frequent mixed lubrication and metal-to-metal contact conditions.

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The new “MC” bearings feature a nano-composite polymer coating, known as K-340. This new developed polymer coating is designed for applying over relatively hard substrates: bronze, aluminum alloys, sputter overlay, and King silver overlay.

The bi-metal structure of the bearing (which consists of a steel back and a strengthened aluminum alloy) is applied with 5-10 microns of the mentioned polymer coating which by itself consists of solid lubricant and ceramic additives. The coating is part of the bearing manufacturing process.

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MC Bearing Benefits:

• Excellent anti friction and wear resistance properties

• The polymer coating K-340 improves the bearing’s compatability

• High load capacity bearings with outstanding seizure resistance

• Especially suitable for start-stop and hybrid engines that operate constantly under metal-to-metal contact

The New MC (Bi-Metal Strengthened with polymer) King Engine Bearings

Racing Polymer King factory applied nano-composite polymer coating – with no added thickness

King’s new pMaxKote is a nano-composite polymer coating. It is applied over the pMax Black overlay at the King factory as part of the bearing manufacturing process.  It enhances wear resistance without changing the bearing’s original precision wall thickness dimension.

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King’s pMaxKote is a new approach to coated bearings. It has proven to protect bearings during metal-to-metal contact, as well as from the erosive effects of cavitation. It contains ceramic nano-composite particles that function as a fourth layer which provides superior build protection.

pMaxKote enhances the following benefits of King XP race bearings:

• Superior seizure resistance

• Superior cavitation resistance

• Superior wear resistance

• Superior protection against oil starvation

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