Wear issues

All grinding wheels have specific wear requirements. Once the wear reaches a certain point, the wheel must be replaced with a new one. It is extremely unsafe and against regulations to exceed the wear requirements in an effort to save materials. Generally, a new wheel should be installed when the wheel's diameter exceeds that of the chuck by 10mm.

(2) Expiration Issue

New grinding wheels picked from the warehouse may not necessarily be of quality, and even new ones purchased from manufacturers may not be up to standard. Every grinding wheel has a certain shelf life; within this period, it is considered a quality wheel. Beyond the expiration date, it may no longer be a quality wheel. Regulations stipulate that "grinding wheels should be used within their shelf life, and resin and rubber-bonded wheels must undergo a rotation test after one year of storage before they can be used."

(3) Texture issues

If cracks are found locally on the grinding wheel during use, stop operation immediately and replace it with a new one to prevent accidents caused by the grinding wheel breaking and harming people.