Keyways 101 - How to use and make keyways
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- เผยแพร่เมื่อ 25 ส.ค. 2024
- In this video, I explain the basics of keyways, what they're for, why you'd want to use them, and how to make your own. They're a great way to tranfer lots of torque reliably.
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This is the kind of approach I love. A seat of your pants method that seems to actually work. No expensive tools, just a bit of thought and common sense. Well done mate.
Very informative video, just one tip. The keyway should be cut inline with one of the set screw holes to help prevent the key from sliding out of the shaft. Thanks for the video.
Thank you very much for your usefull lesson ... i just bought a broach and its tools, i'm just learning as to eventually use it, i didn't know the trick to use it in reverse direction after each "pass". A nice trick ...
Glad it was helpful!
Great tutorial I needed to broach a keyway at work. Thanks.
I've never heard of keyway broaches. Neat how simple they are and how well they get the job done.
Yeah, I always assumed it was a lot more complicated. A lot of people just rely on set screws, but they aren't terribly reliable.
Excellent video; I've been wanting to get a broach set, but never have seen one used.
One bit of trivia though - The 'keyway' in the hub or gear is properly called a keyway, but the one on the shaft is the "keyseat".
In engineering we always called them keyways in both items.
This was so helpful, TY for the great video!
Great instructional video,
Thanks for sharing your knowledge
!
Glad it was helpful!
Great video! Really liked this one. If my current drive system fails I'd definitely try this next time!
Glad you liked it! I am doing more of these types of videos, I think they will be very helpful for people. I made 5 videos this weekend!
I was familiar with the idea of keyway broaches, but I'd never seen one used before. Much easier than I thought. Thanks. (Goes off to look at prices for arbor presses.)
awesome demonstration. thank you
Great lesson , was wondering how they were made .
Good work...came over from Clough42...nice find.
Ha! Did he plug one of my videos, or was it just a recommended channel?
can you cut a slot in in the middle of a 30'' metal rod with this. This is for a adult tricycle axle for mounting the freewheel adaptor and chain spocket that uses a key.
Great video well presented content i have subscibed and look forward to watching more.
Thankyou 👍👍👍
Good info
Very good explanation, but I have a question.
How are the keys secured in place?
The keys are secured in place by the setscrews on your sprocket. Set screws need to align with your key to hold it in place. I recommend using double set screw to prevent it from coming loose.
Question: If I have just a key place on a flange coupling, does that coupling still need set screws to hold the shaft? And do the set screws hold the shaft or the keys? So basicaly I'm asking if the couplings are built with both key ways and setscrews and can they be built with just one or the other? If I just have the key there is no way it will slide along the shaft?
Do the key ways that are cut have any sort of taper to the finished result?
How do you get the gear not move alongside the shaft (when using keyway instead of setscrew)?
You need a set screw directly over the key and that will keep it secure.
what if you bore a shallow hole under the set screw in the shaft
I'm not sure what you mean? But set screws can easily shear or deform the shaft. I'm DONE with set screws ;-)
can I drill holes into shaft so that the set screw can hold into the shaft
Sure, or grind a flat. But nothing beats a keyway and key.
Hello! I’m trying to mate my 3D printed pulley to a hollow brass tube. Inside the tube is another which turns independently. Clearance is small (~1mm). How would you attach the tube and pulley?
Super glue?
it just occurred to me that the beard acts like a pop filter on the mic!! Genius!!
Yes, true! That's a benefit, but it also tends to scratch against the mic, which ruins a lot of footage too, so there's a trade-off!
@@RobertCowanDIY Also don't forget a beard adds 10lb to your deadlift!
Hi Sir, Where to buy 12mm shafts with keyways? I need it to insert into one way clutch bearings.
Check McMaster Carr.
Hey, that's pretty simpl- WOW THAT COSTS ALOT
Haha, totally. BUT, check eBay or similar places, you can get a single broach for pretty cheap, and you could PROBABLY even 3d print a bushing...
Robert - cool vid. I didn’t know how keyways were made so this is nice info.
Just curious - with your 440 you probably could mill the keyway slot in your wheels and gears, right? If you used a small (1/16”?) endmill (axis of wheel aligned with axis of mill) and then relieved the corners (so it would look like a half dog-bone) I think you could effectively make the keyway feature. Maybe that’s harder than just using the keyway tools but curious if you’d considered that or think that could work. Regardless, there may be a keyway cutting set in my future!
Yes, this is possible, but it's MUCH easier and better to just use a broach. doing the dog-bones would weaken those areas, which isn't what you want to happen, IF you're needing a keyway...
Robert Cowan makes sense - the right tool for the job.
Ohhh he finally found the "end stream" button!
Søren Fuglsang
Hehehe
:-) So, there was a window that was minimized, it's nowhere in the youtube settings, it's actually in a pop-up that got lost.
ronnie mcnutt
do you have a balance issue with the key way? i know that its close to center but i have never used/done a key way.
Good question. It would throw off balance if you are spinning at high RPMs. Thankfully, for the final output of the drive, it's only around 1K RPM, which isn't fast enough to create any balance issues. But if it was at the motor's shaft, which spins considerably faster, it could be an issue.
Can i add my opinion ? After having cut the key, another piece of material would compensate its space, generally you cut off steel and again put a steel key ... no mass lost ... true ?
Hello Robert, I have an urgent Turnigy 9x question for you. We have the Turnigy 9x with Orange RX module in it. We are trying to get it working with our lemon RX receiver (DSM2). Currently, we can bind no problem, but the channels are all mixed up so the robot is uncontrollable. We have tried switching from modes 1-4 with no luck. It is also worth noting that although we have a Turnigy compatible module, it does not fit the 9x. We were able to remove the case and get it to fit though. Thank you for any suggestions you can provide.
Sorry for the late reply. It's been awhile since I used the 9X, but you should be able to re-map the channels. I'm not sure how to do it, but I did it on my old radio because I'm a lefty and switched things around a bit.
Robert Cowan Thank you, Robert. And that was NOT a late reply :)
Ok but how dose it stop it from sliding along the key
You can use a spring clip, set screw, or other methods. This is just for the key, so the two rotate together. For holding the two captive to each other, you need something else. Sometimes there's just a slot or channel milled in the shaft of the motor, which will hold the key. It just depends on your application. For MY stuff, I just make sure the component that goes on the shaft can't slide of the shaft, it's held captive on both ends of the shaft, so it can't slide off.
I really like your wedding ring. Where can I get one for myself?
I got it from Amazon actually, it's faceted tungsten carbide.
so, that means the groove in the bushing is the same size and the teeth are thinner, no one explains that
Correct. The backside of the broach is usually a bit thicker.
yaru da niii😅😅
Oh my God use some fucking cutting fluid for the love of God
no, dry cutting is best cutting.
You are very kind person I like the way you act also your video are 👍 but why you ask for help donate am wondering you don't deserve donated there are so many people around the world seeking for glass of water or piece of bread those people whom we must help, this is my opinion. Thanks for sharing us your knowledge.
You aren't wrong. However, I'm allowing people an option to donate because when I cancelled my Patreon account, several people still wanted to show their appreciation. It's simply an option. If you want to donate food and water, I'm not stopping you. But if people want to donate to me, that's their choice as well. Everyone has a choice with their money and they can certainly donate to several causes.
Robert Cowan am sorry if I bothered you that was my opinion. You also ✔ right