Quote:
Originally Posted by billbo911
In the past I've had decent service from McMaster-Carr, but this time... well, let's say, what you see ISN'T what you get!!!!
I ordered two drive sprockets to augment the KOP drive sprockets. The description matched exactly what is needed. Specs were identical including the keyway. What I received HAS NO KEYWAY! Yes, this is not an problem we can't overcome, it just isn't what we ordered!
Thanks for nothing McMaster-Carr
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Did you order 6280K371 (same as 6280K117) ? Those finished bore sprockets are available with 1/2" bores, but the description clearly indicates the 1/2" bore variety
do not have keyways: "Bores are finished so these sprockets are ready to mount to a shaft. They have standard ANSI keyways located on the centerline of a tooth,
except 1/4", 3/8", and 1/2" bore sizes, which do not have keyways. All are made of steel and include two set screws. Use sprockets with ANSI single-strand chain."
Because finished bore sprockets are hardened and therefore difficult to machine, we have usually purchased plain bore (e.g., 6793K123) or flat (e.g., 2299K304) sprockets which are not hardened -- then we drill and/or machine them to suit our mounting requirements.
If you found a McMaster-Carr sprocket with a finished 1/2" bore and a keyway, and McMaster shipped you the wrong part, please post the correct part number. Probably there are other teams that would like to order the same thing you were looking for.
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since 2003
I believe in intuition and inspiration. Imagination is more important than knowledge. For knowledge is limited, whereas imagination embraces the entire world, stimulating progress, giving birth to evolution. It is, strictly speaking, a real factor in scientific research.
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