This is an Auction for up to 4 New in the Box, Thomson 1/4" ID Precision Ball Bushing Bearing, No. A4812.
Each Bid is for ONE Bearing.
Precision Steel Ball Bushing bearings provide up to 8 times the bearing service life of high-friction plain bearings, greatly reducing cycle and downtime. Bearing design compensates for torsional misalignment caused by machine deflection or inaccuracies in carriage or base machining. Accurate and compact instrument-rated bearings are excellent for small mechanisms that require high repeatability and responsiveness.
Steady state speeds to 10 fps. ; acceleration to 450 fps2
Max. temp.: 500° for steel
Coefficient of friction as low as 0.001
Ball Bushing, Closed, Bore Dia 0.250 In, Inside Dia Tolerance +/- .001, Outside Dia 0.500 In, Required Housing Bore Dia 0.5 In, Between Grooves 0.515 In, Length 0.750 In, Dynamic Load Capacity 19 Lb, Temp Range 0 - 500 F, Steel Material
The all-steel design makes the Precision Steel Ball Bushing™ bearing product line perfect for replacing plain bearings in high temperature applications.
Nominal Diameter -.250"
Length - 750/.735"
Distance Between Retaining Grooves - .515/.499"
No. of Ball Circ. - 3
Outside diameter - .5000/.4996"
Accelerated Speed 450 Feet/Second
Steady State Speed 10 Feet/Second
Many more sizes available - see my other auctions.
I will fully guarantee these bearings.
Shipping in the Continental US is $3.90 - I have very competitive rates for International bidders that are always welcome.
