There are many types of grinding wheels and many types of adhesives. Resin grinding wheel and rubber grinding wheel are not a kind of grinding wheel, but many people often confuse the two. The essential difference between resin grinding wheels and rubber grinding wheels lies in their different adhesives. Yes, what are the specific differences? Once you have mastered the difference between resin grinding wheels and rubber grinding wheels, you will no longer confuse the two. The resin mixture is an organic binder artificially synthesized with carbonic acid and formaldehyde. It has high bonding strength and can be used to manufacture thin polishing sheets. And, due to its elasticity, the polishing sheet combined with it has elastic polishing performance. The resin bond has poor heat resistance and burns first at high temperatures, and sand particles are easy to fall off. Therefore, the polishing sheet has good self-sharpening and high grinding efficiency, but the polishing sheet is also easy to lose the correct shape. In addition, the polishing pad binder has poor alkali resistance. Under the action of alkaline cutting fluid, it will accelerate the wear of the polishing sheet, and the humid environment will also reduce the strength of the polishing sheet, so the shelf life of the general resin-bonded polishing sheet should not exceed one year. Rubber adhesives are also organic adhesives. It is made of natural and synthetic rubber as the main raw materials. Its bonding strength is higher than that of resin bond. It can be used to bond thin, highly elastic polishing pads. Good post-processing properties, especially at high temperatures, the rubber-bonded polishing sheet has small pores, few voids, tight organization, and good shape retention of the polishing sheet. However, the rubber adhesive has poor heat resistance, oil resistance, and moisture resistance, and the shelf life of the polishing sheet is 2 years.