Hello, I'd like to replace my rear outer bearings with these from Lang's. What is the difference between the two? Is one style better that the other? What your opinion on them? Do they work?
My Hyatt bearing mics up between .490 to 495 and have pitting
I recently replaced the wheel bearings in my 1912. I elected to use the flanged style bearing for easier removal in the future.
A good friend used the sleeved insert type with needle bearings. They failed after 1000 plus miles. The needle bearings are undersized and will not support the weight of the car over extended periods of time. They are not designed to run under load for extended periods of time. The very size of the tiny needles and the lack of sufficient lubrication to keep them running cool. The end result is that the needles just fractured and seized to the shafts.
Since the needle bearings were fractured and seized on to the axle shafts, He had to remove the rear axle assembly, then disassemble the axle and have the bearings pressed off the shafts. The good news is that there was no damage to the shafts.
The main reason I selected the flanged bearing assembly, is that it uses double Timken bearings with seals. This style of bearing assembly has been used by Subaru for nearly 30 years with excellent results. Unlike the needle bearing failure, the double Timken's have more than enough carrying capacity.
I think you'll soon hear from guys who run original Hyatts and do fine. The fifteen million T's contained thirty million Hyatts, and the aftermarket probably doubles that number, so you can still get good ones. I would steer clear of the repops that have only seven rollers, and no grooves, although I've been told by at least one experienced T guy that they're not as bat as their reputation. I'll skip them as long as I can still get the real thing.
Thanks guys, I'm going with the one with the flange and it's cheaper then the other one!
I wouldn't use anything but the original Hyatts. I have enough spare rear ends with bearings, inside and out...so there is no reason to use any of these repos. Just make sure that the bearings need replacement...don't worry it to death. Save your money.
These cost $170 each, I think I would buy a good set of used Hyatts and new sleeves and put the $300 plus left over back in my pocket.
John, funny you should say that, I have been working on cars for years and I never hesitated when it came to fixing something or replacing a part but all of a sudden, partly from reading the posts on this forum, I find myself hesitating and second guessing everything I do related to the model T. The crazy thing is that the T is a very simple machine once you understand how everything works. Part of the problem is that it is so different in the way it works compared to later cars that it can be intimidating to the even the most knowledgeable mechanic.
Mike, I would not hesitate to use the double roller timkens, I am fortunate enough to have several good hyatts but know that that stash will play out. Try buying a good set and I think it will be harder than some think. I see them come up on e bay and sell high but you don't know what you are getting unless you can mike them and look them over. I think most guys are like me and holding on to the best ones. If you try and listen to everyone here, tho you will get some good info, you will also get confused. KGB
Steve, your maths is a little out. 4 x 15 million makes 60 million, less a few on the early cars.
Just my ex grade school teaching clicking in.
Allan from down under.
Allan and Steve ....Plus an extra 15 million. ( one on each Torque tube)
Total 75 million
In an older rear end partial rebuild, I used the new smooth bearings and sleeves.
In a recent complete rear end rebuild I found the bearings OK but the sleeves badly worn almost to the point of collapse. I was astounded at how much the sleeves had worn.
I have reverted to the original Hyatt bearings and the old sleeves.
I haven't looked at the results recently but I have confidence that the original bearings and sleeves are far better quality than the reproduction parts now available.
Chris, the torque tube Hyatt is larger and seems to have a tougher life than rear axle Hyatt's - few used ones I've found are any good today (only one out of seven in fact)
Hyatt made lots of bearings in various dimensions for the early auto industry and other uses, I've got an old catalog listing hundreds of different Hyatt bearings with prices - the low price listed for the Ford dimensions shows the economics of scale.
Unfortunately repro Hyatts true to the original design (every roller is a tightly wound spring ground to size) would be too expensive for the market.
Mike, safety hubs are a better alternative if you don't want to search for good old Hyatts to use.
One plus with the expensive safety hubs is that the outer bearing surfaces on the axles can be worn so with some luck you may save some there..
Allan, you're right. I was thinking of only the outer ones. I forgot about the inners.
I just sold a couple of .497". Wouldn't use anything else.