Two types of ceramic linear motion bearings are available. The standard
form requires lubrication while the Rulon®
J type is self-lubricating. The Aluminum Oxide coating linear motion
bearing has an extremely low coefficient of friction - even lower
than Teflon bearings - to prevent shaft wear and galling. These bearings,
totally interchangeable with rolling element equivalents, allow line-to-line contact.
They provide excellent electrical insulation and will not rust or corrode.
The 0.002-inch aluminum oxide coating of the ceramic bearing on a
machined aluminum substrate, provides an excellent wear-resistant surface. These
unique bearings perform well under vacuum conditions and their durable
coating is non-toxic. The self-lubricating type (Rulon®
J liner) is recommended for use with soft shafting, including cold
rolled steel, aluminum, and 300 series stainless steel.