Composite spherical and journal bearings are for use in hostile environments, particularly where corrosion resistance is important. These bearings feature a spherical outer surface and are constructed of Teflon and polyester fibers woven into a self-lubricating, bondable fabric supported by a filament-wound, fiberglass epoxy shell. The bearings are self-aligning and can take dynamic misalignment, oscillating, and linear motion. The bearings are targeted for use in surgical and optical equipment, especially where corrosive fluids such as blood and saline solution are present.
Rexnord Corp., 2324 Curtiss St., Downers Grove, IL 60515, FAX (630) 969-8752.
Most machine design engineers will survey existing component manufacturers for standard linear guide products, limiting what they can do with their designs. Using extruded aluminum profile guides can customize machine designs while shrinking the bill of materials.
Practically all electronic devices today contain metals that may
be coming from conflict-ravaged African countries. And political pressures will increasingly influence how these minerals are sourced and used in products.
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