Available in 4 shaft diameters in fixed and self-aligning housings, igus® DryLin R series polymer bearings (from $6.00) provide a low-cost alternative to recirculating ball bearings and are suitable for wet or dirty environments. igus igubal series mounted spherical bearings are lubrication and maintenance-free and are lighter and more economical than traditional mounted spherical bearings. Starting at $10.25, these bearings are available in 5 mounting configurations to fit 4 common shaft sizes. igus iglide series plain sleeve and flange bearings (from $6.75) fit shafts from 1/4 to 1 inch and are economical, dry-running, maintenance free and an excellent choice for a wide range of motion applications. Starting at $9.25, igus DryLin R series hard-anodized aluminum shafts in both round and fully-supported shafting are specifically designed for DryLin R linear polymer bearings.