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This part is an OEM part of the automobile gearbox cover. The flatness of datum plane is 0.02, the coordinates of four-axis hole position are 0.03mm, the middle hole diameter is ￠ 116 + 0 / 0.025, and the periphery is 3 - ￠ 100 + 0.015 / 0.04. It is continuous, mass production, and good accuracy retention. At the same time, it puts forward higher requirements for the stability of the machine tool.
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