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The technical conditions for grinding the end face of NTN bearing ring are: NTN bearing ring width dimension, width variation, end face linearity, end face flatness, surface roughness, appearance (including burn), residual magnetism, etc. Technical conditions and other technical conditions. For the end face of the NTN bearing ring with a double-face grinding machine, the total height of the gap is evenly distributed on both ends. For single-side grinding of the end face, the reference surface allowance is half of the turning allowance (18mm < 0.1mm when the outer diameter of the ring is ≤ 50mm). The non-reference surface margin is half of the machining allowance plus the blank tolerance.
A resin bond grinding wheel is used, and a single-sided grinding uses a thin-walled cylindrical shape, 80. Granular grinding wheel; 80 for double end grinding. Particle size atmospheric hole grinding wheel. The grinding amount includes the table rotation speed and the grinding wheel feed amount, which is related to the outer diameter of the ferrule and the number of pieces (for single-side grinding) or the ferrule width (for double-face grinding).
Bearing Grinding and Grinding NTN Bearing Ring Face Technology
After grinding the end face of the grinding wheel, there are two shapes: the convex type concave type. For the convex type, the two convex grinding wheel inlets form an approximate tapered passage on the side of the grinding wheel core, which is convenient for gradually grinding out the metal balance, and the heart is On the exit side, a nearly parallel aisle is formed to facilitate fine grinding of the end face of the workpiece for higher precision and lower surface roughness. For the concave type, the grinding wheel has a low cutting ability close to the core portion, intentionally making it less or not participating in grinding, and reducing energy consumption. In addition, the outer edge is easy to wear, intentionally let it be higher than the heart, so that it wears and gradually increases the area of ​​the grinding NTN bearing, so that the end face of the grinding wheel gradually becomes convex, which is beneficial to improve the life of the grinding wheel.