Resin Bond Grinding Wheels: Formulations & Uses

One of the most widely used grinding wheel bonds in the superabrasives market is the resin bond grinding wheel. Typically composed of either phenolic or polyimide resin, there are virtually limitless options in terms of ingredient concentration. But what is it that makes the resin bond one of the most commonly used bonds across the industry? Let’s dig deeper into each type of resin, its uses, and its advantages to further investigate the reason behind the popularity of resin across multiple applications.

Phenolic Resin

Polyimide resin is a high-performance plastic polymer. The product of a reaction between dianhydride and diamine, this material is hailed for its heat resistance as a soluble thermoplastic capable of enduring temperatures, from below zero to 400 degrees Celsius under dry grinding conditions and 625 degrees Celsius in wet grinding conditions. As a harder resin option with impressive thermal capacity, polyimide resin is ideal for high-tolerance grinding. These wheels offer greater stock removal rates, better form holding, and excellent wear resistance compared to other bond types. It’s no wonder they’re a popular choice among manufacturers in the round tool, aerospace, and automotive industries.

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