Tight tolerances are extremely important in gear manufacturing, and even more so when those gears are used in performance motorcycle transmissions. The ability to manufacture as competitively as possible is also a critical factor to consider. This was the position a motorcycle component supplier (in Pune, India) faced when it contacted Engis Corp. (Wheeling, Illinois) about single-pass bore finishing. "The first alternative the company considered was installing a number of conventional honing machines, where multiple passes of an expanding mandrel achieve a precision finish," explains Robert Marvin, Engis product manager. "The company also had to be as cost-competitive as possible in producing these parts, which led to discussing single-pass bore finishing."
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