Quick-Loks Discs are small discs (usually 2” or 3” diameter) with a button on the reverse side. The button allows the disc to be changed quickly with one twist and without the use of special tools. For this reason Quick-Lok Discs are often referred to quick change discs. This advantage of the button is reduced tool down time by quick and tool-less disc changeovers. Quick-Lok discs are available in most coated and non woven abrasive backings.

Uses and Advantages

As stated above, the main advantage of a Quick-Lok Disc is the quick change mechanism allowing product changeover with minimum tool down time. Other features are the small diameter of the disc which leaves a small grinding footprint and allows the user to grind in space restricted areas where a larger tool could not be used.

The more flexible a disc the greater it’s ability to conform to the surface being finished and the lower the cut rate. The more rigid the disc the higher the cut rate and stock removal but the less conformability.

The standard ARC disc is an X or Y weight abrasive with a single layer of Maxbak laminated to the reverse side of the disc.

Increased flexibility and rigidity can be attained by any of the following methods:

Undersize Holder

Over 95% of Quick-Lok sales are for 2” or 3” discs. We recommend using a 2” disc with a 2” holder. However it is common practice to use an undersized holder such as a 1” or 1½” holder with a 2” disc to enable the disc to flex and contour around the workpiece.

Hardness of Holder

Flexibility can also be varied by using different hardness back up pads. ARC’s 2” and 3” backup pads are available with soft, medium and hard rubber.

Other methods to change the flexibility of the discs are slotted edges, multiple plies of backing, and variable stiffness backing where the edges are designed to be more flexible than the center.

Choice of Backing

ARC typically uses 0.8mm fiberboard as the standard Maxbak backing, ARC also has a lighter, more flexible backing as a on the AO/X+ Flexible discs. For increased rigidity, ARC has a line of “Resin Fiber Disc” Quick-Loks available in aluminum oxide and zirconia.