Do You Make Hex Bore Couplings?

Release Date: November 22, 2019

Do you make hex bore couplings?

Transcript

Location: Placentia, CA
Answer: No, not as a standard. We make a standard product line and need a standard shaft tolerance to match to. This doesn’t exist in small bore hex. In a one-of application basis we can do them because we match the tolerance on the shaft to the tolerance on the bore so that they will fit. The drawback here is that there needs to be hundreds of pieces for us to consider this because it’s an operationally-expensive special. When I spoke to the customer the application was actually really interesting and the need for a hex did make sense. They had a big step in shaft size and they were using a double keyway on the bigger shaft which was a dead giveaway that there was a high torque load there so they wanted to hex the smaller side because a round bore would have no chance of holding it. Even using a key there would be a chance of shearing it. While their idea to use a hex makes sense in this case, it’s not something we can do for one-off small quantities. The best option here would be to use a machine shop that has EDM capability and can machine the geometry into the coupling directly.

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