Class P5 has higher size, precision and rotary precision than class P6.
The size deviation (inside diameter, outside diameter, ellipse, etc.) of products with high accuracy grade is smaller than that of products with low accuracy grade.
Products with high precision grade require higher rotation accuracy (internal radial runout, outer diameter runout, end facing raceway runout, etc.) than products with low precision.
The surface shape and surface quality (surface roughness of raceway or channel, circular deviation, groove deviation, etc.) of products with high precision grade are more demanding than those with low precision grade.
