Excellent Polishing Systems

Harper polishing systems have the capabilities you need. Abrasive machining, belt, and flap wheel polishing are all options.

Before & After Polishing Painted Objects

Abrasive Machining

Polishing with abrasives bonded to a flexible backing has excellent capability to modify product shapes, dimensional changes, and heavy stock removal. Belt polishing is far more forgiving than hard wheel grinding and is superb for generating scratch patterns and tracing complex parts for surface refinement. When used with lubrication, abrasive belt machining can improve the microfinish of polished products and eliminate problems with heat discoloration, distortion, and warping.

Belt

Slack-of-the-belt heads and endless belts backed by varying durometers of contact wheels offer a tremendous amount of flexibility. Belt polishing can remove casting, forging, and parting lines, as well as weld seams, and is useful for heavy burr removal.

Flap Wheel

Flap wheels are extremely versatile for specialized polishing on components with contours, steps, and internal or external radii. The abrasive paper of the flap wheel can be shaped to match the component face, slit for tracing profiles, or combined with cushioning material for greater flexibility.

Problem	Uniform finish
Solution	A 72"-diameter indexing rotary table with an auto load and unload system removes all imperfections from the casting operation. A high polish finish is also achieved before final assembly. Production rate: 600 parts per hour.
Problem	Flash and excess paint removal
Solution	Using slack-of-the-belt technology, all excess flash and paint are removed at the speed of 3,000 pieces per hour. Pressure-sensitive controls allow for precise removal of the paint and exposure of the underlying corded T-grip. An air discharge system unloads the grips after processing.
Problem	Remove zinc die cast flash and sharp edges
Solution	A straight line V5 conveyor transports soleplates under several belting heads to remove excess die cast flash and apply a uniform edge chamfer.
Problem	Additional heads radius all steam ports and prepare the ironing surface for a Silverstone or Teflon finish before assembly. Production rates: 750 per hour.
Solution	Pre-polish and final buff required
Problem	Before a copper/nickel-chrome plating operation, a preliminary pre-polish is accomplished by two abrasive belt heads. The overall pre-plate finish is produced by two buffing heads. Production rates are more than 500 pieces per hour.