Description
Production deburring cells bottleneck when operators switch between aggressive edge grinding and delicate compound buffing. The Baldor-Reliance 8 Inch Bench Grinder/Buffer combines snagging stone capacity with an extended buffing shaft operating at 3600 RPM. Jamming oversized forged brackets hard into the stone side drops shaft velocity, inducing rotor slip that overheats single-phase run windings during sustained contact.
Baldor builds this split-duty machine around a heavy cast iron base and rigid iron stator frame. A balanced 3/4-inch carbon steel arbor shaft spins inside dual-shielded, pre-lubricated ball bearings seated in cast iron end bells. The wide-span right-hand shaft extension provides unhindered clearance for wide spiral-sewn cotton wheels, while the cast iron left guard retains hot spark particles and abrasive wheel debris away from adjacent buffing mops.
Combination Finishing Machine Hardware Matrix
Split arbor architecture executes weld cleanup and final buffing on a single workstation footprint. Rigid iron castings eliminate rotational vibration during continuous manual workpiece contact.
- 0.75 horsepower industrial motor maintains 3600 RPM operating speed under continuous surface contact.
- 8-inch vitrified grinding wheel on the left side cuts parting lines and rough casting flash.
- 3/4-inch extended right arbor shaft accommodates wide stitched buffing wheels and sisal mops.
- Cast iron tool rest locks down firm with twin hex bolts to stabilize hand-held stock.
- Cast iron wheel guard encloses the grinding station with integrated spark arrestor plates.
- Shatterproof eye shield blocks high-velocity grit while maintaining clear line of sight.
- Pre-lubricated ball bearings resist radial thrust loads generated during heavy wheel dressing.
Electrical Bench Dynamometer Load Audit
Bench load testing indicates a 7.2 amp operating draw on 115V single-phase current. Spindle speed drops from 3595 RPM free rotation down to 3380 RPM under 14 inch-pounds of sustained manual wheel friction. Dead stall draws 26 amps instantaneous current. Shaft runout measures under 0.0008 inch at the buffing wheel shoulder. Stator housing temperature rises 36 degrees Fahrenheit above ambient room temperature after two hours of continuous work. Sound levels register 72 dBA idle and 86 dBA under heavy deburring.
Shop Duty Limits Service Directives
Asymmetrical wheel loading introduces harmonic rocking unless the base bolts down tight to a concrete pedestal. Do not buy this grinder buffer combo for foundry snagging on massive torch-cut billets, which bogs the 0.75 horsepower motor down into thermal overload within minutes. Cross-contaminating cotton buffing mops with vitrified stone swarf ruins polished surfaces.
- Dress the vitrified grinding wheel face with an industrial diamond dresser every four operating hours.
- Rake cotton buffing wheels with a mechanical comb to remove hardened compound build up every shift.
- Blow metallic swarf from motor base cooling vents using dry compressed air every work week.
Baldor Factory Warranty Package Manifest
Baldor-Reliance backs this machine with a 3-Year industrial warranty covering defective materials and motor winding breakdown. The shipment crate contains the 8250W grinder buffer head, one 36 grit grinding wheel, cast iron tool rest, spark guard, clear eye shield, wheel flanges, and technical documentation.