TW90 Vertical/Horizontal Grinder, (the 90 is for the 90 degree vertical to horizontal tilt feature) Features: Frame: CNC Laser cut from ¼ inch steel plate, precision welded and powder coated. Drive: Comes standard (only) with 2 horsepower Variable speed (via variable frequency drive). Power output is 2hp on 220 single phase and 1 ½ hp when run with 110 single phase power Tracking: Unique drive-wheel-tracking and specially domed wheels provide exceptionally smooth and stable tracking in both vertical and horizontal grinding positions Wheels: CNC machined billet 6061 aircraft aluminum wheels with dual bearings, precision shafts and retainers. Contact wheel -8” non-serrated polyurethane standard.(toolbars are available to use Bader serrated contact wheels and small wheels) Platten: 2”x10” flat platen with 2”x2” aluminum or polyurethane idler wheels Tool Rest: Billet quick change tool rest provides multiple configurations for contact wheel and flat-platten in both vertical and horizontal positions. Additional quick change tool-rests are available. Single plane quick change toolrests are extremely convenient for basic grinding operations Small Wheel attachment: Dual Fork quick change small wheel attachment that accepts Bader type small wheels.