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Toolbox Metric Keyway Dimension Problem

Question asked by Ronan Carrroll on Aug 24, 2012

I have just found this in toolbox. Was inserting an ISO gear with diameter 12 bore and keyway. Toolbox made a 5mm wide keyway. It should be 4mm. Then tried it with 10mm bore dia where keyway should be 3mm wide but toolbox uses 4mm. Attached is a data sheet that gives metric keyway sizes.