Jump to content

Propeller woodruff? Key

Recommended Posts

Ok so I’m not the kind of guy to run roughshod over someone else’s post as you all know so I’m starting my own ‘it a woodruff key’ thread. 
More important than naming a by piece of metal is the question of the fit. @suzook12mentioned that the fit should be tight, so I’ve looked at mine and am now not sure. 
My key isn’t square it’s rectangular, the smaller size being nearly a mm smaller than the channel in the prop. 0ED604E7-614F-435E-AD3A-F467BEF0C0CC.thumb.jpeg.424c2efecce232ae34008335ddfafa9f.jpegF0FF1A6B-61F2-4644-AF02-329E659E7EC3.thumb.jpeg.a2c04523835846d4e85ee6ee797e6878.jpeg

The larger dimension is a tight fit,FA63D3DC-385E-4270-A4B6-1594F84A87F6.thumb.jpeg.fe4687a1a9f226daa466ec4613d1f225.jpeg

It will sit in it without falling out. 
I haven’t got the shaft in my house as it’s still on the boat. 
So should I force it in the tight way or as I’ve been doing the loose way?

There is no visible wear on the keyway on the prop. 


Link to comment
Share on other sites

You are measuring the height of the key there, not the width. It shouldn't be tight, but it should be "snug", anything from a firm push to a gentle tap to get it in the slot....

Check the width of the key steel and check the depth of the groove in the prop and in the shaft. Sounds like you may have the wrong key steel in there.

The slot in the prop may not be a match to your shaft, in which case you make have to make the best of it, maybe using some bearing fit (it's like a loctite type stuff)

Edited by suzook12
Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Create New...