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Lapping machines are selected based on the part size and flatness required. Generally, it is desirable to select a plate diameter so that part diameters are significantly smaller than the plate land width. Care must be taken to account for the lapping kinematics to assure the part rotation allows for somewhat equal surface speed of the entire part when in operation.
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Maximum Part Diameter: |
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5.438" |
9.688" |
11.938" |
14.438" |
16.938" |
16.938" |
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Plate size will affect lapping performance and productivity. The larger the plate, the greater the surface speed and stock removal rate. Also, the ratio of plate area to total piece part area must be considered so that the plate is not overwhelmed by the workload and enough slurry can be applied to achieve cut rate. In general, larger plates also achieve better flatness and are easier to maintain plate flatness.
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