1. Wheel diameter chuck mounted wheel diameter of not less than one-third. The abrasive reflex wheel chuck diameter not less than one-quarter the diameter of the wheel is mounted.
2. Any form of grinding wheel chuck, diameter, and pressing the left and right side of the radial width of the two parts of equal size must be equal.
3. Each surface cutting & grinding blades chuck should ensure smooth and without sharp edges, and well balanced.
4. Grinding Machinery All rotating components, such as: grinding wheels, motors, pulleys and workhead etc., must be fortified security guard. Shield should be firm, not less than the strength of their connection strength of the shield.
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