Constructed of stacked petalshaped laminated aluminum-silicon alloy plates, the bearings are housed in stainless steel with a polyureathickened grease containing antioxidant and anticorrosion additives. The inner faces act as the bore of the assembled bearing. The bearings come in 1 to 6-mm IDs and offer a 6,000 to 20,000-rpm speed range.

Stock Drive Products/Sterling Instrument, 2101 Jericho Turnpike, Box 5416, New Hyde Park, NY 11042, (516) 328-3300,