Ball bearing with axle - Track rollers - Agrobearings - track bearing
Radial thrust bearing
Overview: There are four legs (4x4s) that travel in a cuff. I'm designing for the top to carry and lift about 400lbs, but more likely will be under 100lbs (with each leg being able to lift 100 lbs max / 25 lbs). Total amount of lift is going to be between 15-17" depending on the bearing configuration. After the bench is lifted to different heights, I'll have spacers to hold it in place and then back off the force of the lift (so if I'm hammering something, I won't be hammering against the threaded rods)
The second half presents extensive tables containing most bearing numbers and showing dimensions and pertinent design data listed in the order of increasing ...
Radial thrustin centrifugal pump
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Thrust bearingexample
The rising mechanism is driven by four threaded rods (3/4"). Below the table, each rod will have a gear, and all four will be connected by one roller chain driven by one drive gear (which I'll use an electric drill to turn). On the threaded rod is a square nut, that fits inside a square tube held in place by two tension pins (so as the rod turns, it will push up against the tension rods/square tube which pushes the top of the workbench up and down).
Option 3: I also have a bunch of these radial bearings...but pretty sure they're not the right type for this application? http://prntscr.com/uf22dd
2019514 — **Squealing & Growling: The classic sounds of a bad wheel bearing are cyclic chirping, squealing, and growling noises. You can verify the sound ...
Radial bearingexample
I bought a bunch of different radial and thrust bearings to try out an assortment of options, they all have pros and drawbacks. (For underneath I'm using a flanged bearing along with the gear and collar clamp to hold it in place, I'm struggling with the above floor bearings unless you have other ideas on the underneath part)
Thrustballbearing
Lock Collar Bearing, Non-Greaseable, Bore 15/16", Pre-Lube. Replaces Fafnir Mfg Number(s) RA015RRB, Replaces Peer Mfg Number(s) FH205-15, Replaces Tru-Pitch ...
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I'm a total novice and self taught, currently designing and building a workbench for woodworking with an adjustable height top. This is the last major part to finish and I'm having trouble determining which bearing configuration to use.
So, should I go with Option 1, 2, 3, or is there another / easier configuration that would make a lot more sense? If you know of a better bearing design a link would be really useful as a visual as well.
What is aradial bearingin surveying
EDIT: I essentially am trying to do this, except with the drive mounted below the floor instead of over it: https://www.youtube.com/watch?v=URrEdGeoDBs
Unless you're spinning the rods more than 100 rpm bushings should work, are cheaper and easier to work with than bearings.
Journalbearing
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Radial bearing vsaxialbearing
Jan 22, 2021 — The most common and easiest sign of wheel bearing failure is the noise it will make. If you hear a growling, rumbling, humming, screeching, or ...
Comment added to answer: the video makes it much more clear what you're trying to accomplish, thanks. Option 1 should work for you. The bearing in that housing is designed for radial loads, but typically a deep groove radial ball bearing can handle an axial load equal to 50% of it's rated radial load. Or just steel washers sandwiching bushings, but it seems you already have all the pillow block bearings.
CUPT625-0.625" Dia. x 0.2" Thick Steel cup ...
Option 2): Thrust Bearings. https://www.amazon.com/gp/product/B01EBKYSWA/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1 If I use thrust bearings, which seem to be the correct type of bearing to use, they bind and rub on the floor of the bench because the inner race is proud. I've tried drilling a wider hole, but the tolerances are too tight to solve the problem. I feel like there's a configuration that this could work but I've spent days playing with different types and haven't found a solution.
Prototype picture: http://prntscr.com/uf1sa9 (2x4 represents the workbench floor, flange bearing above with collar above.)
Option 1): Flanged / pillow radial bearing. https://www.amazon.com/gp/product/B01NCUJH8I/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1 These bearing are rated for Static (axial) Load Rating: 6.65 kN/1500 lbs and Dynamic (radial) Load Rating: 12.8 kN/2900 lbs. On the pro side, the flange plus set screws will allow me to hold the threaded rod in place, along with a collar it should hold well and not slip. Con, I don't think this is the right kind of bearing. I tapped one with a hammer and it started to come out of the race a little...but maybe for these types of lifting forces it'll be fine?