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#1
10-05-2013, 07:21 PM
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What are the best NF front PTO bearings?
A year ago, I bought a cub cadet bearing from cub cadet for the front PTO on my 124. Three weeks later, the PTO starts to slip while I am mowing. When I take it apart, I found that the grease had leaked out of the sealed bearing and had contaminated my PTO clutch, causing it to slip. Cleaned it up and put in a new fiber disk. Worked OK. This summer, I refurbished my 124 and today felt the PTO and found it wobbly on the crank. Took it off and found that the wobble was in the bearing. The bearing was still fairly smooth, but you could rock it from side to side.
My question is: which bearing is better, the Advance Auto National bearing set #NPC-100-RPC, or the NAPA # RA100RR or PRA100RR. This is assuming that my 124 takes the same bearing as a 149. And I do know what assume does for a person.
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John Proud Owner of a Model 100 and a Model 124. A homemade cart, 2 x 42" mower decks, a 38" deck, a 42" front NF blade, and a lawn sweeper! 
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#2
10-05-2013, 07:27 PM
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I am not real familiar with all the CC know how, but my gut tells me that your clutch is not properly adjusted, allowing it to slip, and overheating the bearing "cooking" the grease shields. Just my 2c. Good Luck!
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1966__122 Cub Cadet. Owner: Calvin, 6 yrs old Dad: Craig
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#3
10-05-2013, 09:47 PM
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The PTO metal does not appear to have been very hot - paint still intact, no hot spots on clutch disks, just covered with grease when I took it apart a year ago. Should have replaced the bearing last year, but waited until I was putting the engine back together recently after an overhaul.
Anyway, the bearing from Cub Cadet was a China bearing, and I'd prefer a USA bearing if possible (which may not be possible). Anyone out there have any ideas?
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John Proud Owner of a Model 100 and a Model 124. A homemade cart, 2 x 42" mower decks, a 38" deck, a 42" front NF blade, and a lawn sweeper!
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#4
10-05-2013, 11:22 PM
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The National bearing is the best bearing of the ones you listed. I don't know if the part numbers you listed are the correct crossover. The best bearing money can buy is a Timken, just for the record. And I agree that you need to make sure the clutch is adjusted correctly and the belt is routed right as to avoid extra heat.
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#5
10-06-2013, 01:05 AM
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i just got one from ebay for around 12 dollars shipped with the collar and it looks like the same exact one i got from cub cadet for my 100 and 72 for alot more
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cub cadet 71 that my pop pop got new and gave me in 85......restoration just started cub cadet 100......was a friends grandfathers, given to me in 93.. restoration almost finished cub cadet 72, 150 dollar craigslist find, 38" deck, worker cub cadet 127 basketcase, my dad bought in 84 cub cadet 71 beauty (formerly johncub7172's) cub cadet 123, craigslist find   
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Cub Cadet is a premium line of outdoor power equipment, established in 1961 as part of International Harvester. During the 1960s, IH initiated an entirely new line of lawn and garden equipment aimed at the owners rural homes with large yards and private gardens. There were a wide variety of Cub Cadet branded and after-market attachments available; including mowers, blades, snow blowers, front loaders, plows, carts, etc. Cub Cadet advertising at that time harped on their thorough testing by "boys - acknowledged by many as the world's worst destructive force!". Cub Cadets became known for their dependability and rugged construction.
MTD Products, Inc. of Cleveland, Ohio purchased the Cub Cadet brand from International Harvester in 1981. Cub Cadet was held as a wholly owned subsidiary for many years following this acquisition, which allowed them to operate independently. Recently, MTD has taken a more aggressive role and integrated Cub Cadet into its other lines of power equipment.
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