Radial Engineering
Radial Engineering
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 Radial Engineering London Bones Distortion FX Pedal HOT  US $159.99
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 MADE IN BELGIUM OBAMA WAH DISTORTION PEDAL BIG JOHN US $299.99
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 Radial London Bones Distortion Pedal w box owners manual FREE SHIPPING US $99.99
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 Radial Texas Overdrive Pedal NEW US $149.95
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 RETonebone Plexitube Tube Distortion Brand New FS US $289.99
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Mechanical engineering - bearings?
I need to support a shaft that will be the axis of a centrifuge. The shaft will spin round at about 1000 rpm. It will be loaded axially by 1 ton, which will have to come through bearings. The centrifuge will be out of balance. The rotating out of balance load will be equivelent to a radial force of 5 tons. What type and size of bearing do I need?
Centrifuges, any centrifuge, has inherent risks, and improperly designed can be quite dangerous or even downright lethal. Assuming you have calculated your radial load correctly you're not quite in the "grenade" range yet, but you still best contain that thing in some kind of cannister. It's not possible to guess at your centripetal force without knowing the weight of your workpieces and the radius of your rotor, so no suggestions at containment can be made, but here's a suggestion on bearings for the drive end of your device based on the inadequate information you've given. Find one of those axles used to transport mobile homes, they're cheap and very common, and you'll have a bearing setup well in excess of the speed and load you're working with, both radially and axially. Cut the spindle from the axle tube, use the hub itself to mount to the frame of your machine, they're massive and pretty accurately made. Take your spindle to a machine shop and have your driveshaft (I suggest inch and a half cold rolled steel) centered and welded onto the back side of it leaving enough room for a taperlock pulley between your drum and the trailer hub for a drive belt. At 1000 rpm you can use any weight or grade of grease in the bearings, it's not a critical factor at that speed (up to about 4000). The whole ball of wax shouldn't cost you more than a couple hundred bucks and the safety factor (depending on the quality of the machine work) will be in the hundreds of percents. Here's another important consideration also, if your "out of balance" load is farther above your inner bearing than half the radius of your drum you had better put another bearing on the top of the thing, otherwise with a five ton centrifugal potential it will simply walk out the door or shake your building off it's foundation. Hope this is helpful.
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