Handwheel Bore

A handwheel bore is the hole in the center of the handwheel. The bore is measured by its diameter, which is the distance from one side of the hole to the other. The basic bore type is simply a hole straight through the handwheel.

One of the most misunderstood parts of specing or buying industrial handwheels is the importance of understanding how to mount and retain them. The easy part is measuring the shaft and cutting a hole just slightly larger in the center of the wheel, then sliding it into place. There are a wide variety in standard sizes.

It is not quite that simple though, the handwheel must also be locked to the shaft in order for it to be actually able to turn the shaft. There are a number of ways to do this depending on how the handwheel is going to be used.

The bores are designed in a lot of ways and all for good reason. Wheels have to be removed and installed to service machines. Most of them have to exert force in both directions equally.

Here are just a few of the designs:

  • Hexagonal bore with set screw
  • Tapered shaft with locking bolt
  • Threaded shaft with locking bolt
  • Splined shaft
  • Press fit shaft
  • Keyway fit shaft
  • Half square shaft with set screw

Are you looking for handwheels?


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