m farmall rear axle

560IHC1959 · Jan 13, 2015

will an m farmall axle fit in a 560 ?

D Slater · Jan 13, 2015

Yes, though a 560 may have one keyway and a M two keyways.

560IHC1959 · Jan 14, 2015

so does the 560 have the same bull gear as a m? also since the 560 axle only has one key way can a person change the clamp on an m hub and it fit the 560 axle?

thanks

D Slater · Jan 14, 2015

Early 560 came with a bull gear that would interchange with a M. But after that the teeth pattern was changed more than once on 560 tractors and also on early ones that got the full updates installed. IH had a update program. Updated bull gears or 560 tractors built after updates were factory installed don't mesh right with a M bull pinion gear. Axle spline size still the M size. Know of some that have ground the part of M clamp that goes in the keyway off and used them on a one keyway axle. Good chance they could fail at maximum pull and traction. M clamp used four 3/4 inch diameter bolts. 560 clamps used four 7/8 diameter bolts.
IH did make a wheel for M type rims with axle clamps just like a 560 and a steel axle key. Came out about 1955 and looks just like a M wheel except in the clamp area. Used as a replacement wheel for previous tractors with 2.75 axles.
At 560 serial number 13814 up axles were changed from alloy steel to a carbon steel and method of hardening changed from furnace hardening to induction hardening to increase the strength of axle.

m farmall rear axle

560IHC1959

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D Slater

Well-known Member

560IHC1959

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D Slater

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