Bearing surface coatings for industrial use
4th Quarter 2013
Shaft power components
Bearings 2000 offers a comprehensive range of Schaeffler coatings for roller bearings. These are designed to prevent or reduce fretting corrosion, wear, friction, slippage and the passage of electrical current through bearings used in traction motors, gearboxes and wheel sets. Corrotect zinc-iron alloy and Corrotect zinc-nickel alloy are the preferred choice in highly corrosive applications. Salt spray tests have shown that they offer up to 720 hours protection against the formation of red rust.
The Durotect coating prevents premature wear of rolling elements in traction motor bearings and axle box bearings. Durotect B mixed iron oxide coating improves the running-in behaviour of bearings and supports deep groove ball bearings in traction motors under poor lubrication conditions. Durotect M manganese phosphate coating improves sliding and running-in behaviour and Durotect NP nickel-phosphorus coating gives anti-wear and anti-corrosion protection.
Triondur coatings offer a high level of protection against abrasive and adhesive wear while reducing friction to a minimum. Where there is a risk of slippage due to light loads, Triondur C, a carbon based adamantine coating system, reduces dry friction against steel by up to 80%. Triondur C can withstand high contact pressures, making it ideal for hydraulic motors and engine components.
Insutect is available either as an insulation coating or as ceramic rolling elements for the prevention of roller bearing damage caused by electrical current. Today, the potential hazards for bearings and the entire drivetrain in modern electric motors is growing. This is due to the increasing use of frequency converters. Insutect can be used in numerous applications.
For more information contact Michael Stamatiadis, Bearings 2000, +27 (0)11 573 7826, [email protected], www.brg2k.co.za
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