A 0.02 mm flatness callout on a 180 mm aluminum housing is not the hard part. The hard part is holding that flatness after 14 tapped holes, three intersecting bores, a 1.5 mm wall, and a 0.4 Ra finish have all been cut. High precision complex milling components fail in production for reasons that r...
A plant engineer sends over one worn aluminum bushing: 40 mm OD, 32 mm H7 bore, 45 mm long, a 6 mm flange, and two annular grease grooves. It ran on a hardened 32 mm steel shaft in a packaging line at roughly 300 rpm until the bore went oval and the line started to chatter at start-up. The replacem...
Precision housings and enclosures are decisive elements in product reliability. A well-machined housing holds electronics in exact positions, provides a stable thermal path, keeps out moisture and dust, and shields sensitive circuits from electromagnetic interference. The opposite is also true: a h...
A rotary indexing table begins to vibrate at 2,400 revolutions per minute, three weeks after installation. The service technician measures the drive shaft and finds a runout of 0.03 mm against a drawing specification of 0.008 mm. Replacing the shaft solves the problem, but the downtime costs more t...
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