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25/06/2009
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Taylor Hobson has produced the world's largest roundness measurement system, for use in the heavy duty truck engine market.
 Talyrond 450 with its 2.5 metre column, new high precision air bearing spindle and 1000 kg load capacity provides full inspection of engine blocks, cranks, heads.
The Talyrond 450, with a 2.5 m tall column, represents a new milestone in roundness measurement for Taylor Hobson. In 2006, the company was approached by two leading manufacturers of heavy duty truck engines looking for a measurement solution for their latest engines for the Chinese truck market.
To meet emission criteria, these new engines require tighter form tolerances, creating a challenge for the inspector and stretching the capabilities of the measuring room. Co-ordinate measuring instruments, although capable of measuring the cylinder bores and other parts of the engine, struggle to meet the specifications applied to the crankshaft and camshaft bores, and are certainly not capable of measuring the crankshaft.
The main reason for this problem is the length of the measuring probes. These probes have to reach depths of greater than 1.2 m and still maintain accuracies in and around the micron mark.
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Author
Andrew Allcock
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