Ls400 front wheel bearings
#1
Lexus Champion
Thread Starter
Ls400 front wheel bearings
The original.bearings in 1999 LS400 are being replaced.
Slight roughness, mileage and age of lubricant suggests replacement. (Original bearing could possibly be relubricated if extraction and reinstallation without damage)
Impressive durability...
Here's the thing...
The factory installed bearings were Nachi and incorporate a bearing race cover/seals
Toyota's North American parts distribution substituted Koyo brand replacement bearings with an open race...
The OEM production engineer specified the bearing cover/seal for a reason.
Will contact Nachi for comment and current offerings.
Meanwhile, anyone with information on an alternate bearing manufacturer incorporating a race cover/seal??
Thanks.
Original Nachi brand bearing...side cover/seal...no exposed bearings.
Dealer provided Koyo brand bearing does not incorporate bearing cover/ seal...
Slight roughness, mileage and age of lubricant suggests replacement. (Original bearing could possibly be relubricated if extraction and reinstallation without damage)
Impressive durability...
Here's the thing...
The factory installed bearings were Nachi and incorporate a bearing race cover/seals
Toyota's North American parts distribution substituted Koyo brand replacement bearings with an open race...
The OEM production engineer specified the bearing cover/seal for a reason.
Will contact Nachi for comment and current offerings.
Meanwhile, anyone with information on an alternate bearing manufacturer incorporating a race cover/seal??
Thanks.
Original Nachi brand bearing...side cover/seal...no exposed bearings.
Dealer provided Koyo brand bearing does not incorporate bearing cover/ seal...
#2
NSK & Timken bearings are also open race/non-sealed, however the SKF FW149 is a sealed bearing for about $40 a piece. They're all OEM suppliers for many automakers so you can rest assure they're good quality.
#3
Lexus Champion
Thread Starter
NSK technical support advises catalog and online images are not of actual bearing...which means open configuration.
#5
Racer
The timkens I got were not sealed, bought the seals seperately
#6
Lexus Champion
Thread Starter
The seal an integral part of the Nachi bearing assembly.
Perhaps you are referring to the hub seal that is purchased from the dealer??
In any event event, to source the correct bearing (sealed as from the factory) purchase from a Toyota parts distributor in Japan....
Perhaps you are referring to the hub seal that is purchased from the dealer??
In any event event, to source the correct bearing (sealed as from the factory) purchase from a Toyota parts distributor in Japan....
Last edited by YODAONE; 05-22-19 at 07:43 PM.
#7
Racer
The seal an integral part of the Nachi bearing assembly.
Perhaps you are referring to the hub seal that is purchased from the dealer??
In any event event, it appears necessary to source the correct bearing (sealed as from the factory) from a Toyota parts distributor in Japan....
If Toyota expects customers to pay premium prices for a wheel bearing then they should provide the CORRECT premium OEM part.
Have noticed of late hardware is not the original gold zinc dichromate plating but less durable zinc plating...
I shouldn't have to inquire where stuff is coming from or worry if original correct factory parts are compromised when purchasing from a dealer.
Perhaps you are referring to the hub seal that is purchased from the dealer??
In any event event, it appears necessary to source the correct bearing (sealed as from the factory) from a Toyota parts distributor in Japan....
If Toyota expects customers to pay premium prices for a wheel bearing then they should provide the CORRECT premium OEM part.
Have noticed of late hardware is not the original gold zinc dichromate plating but less durable zinc plating...
I shouldn't have to inquire where stuff is coming from or worry if original correct factory parts are compromised when purchasing from a dealer.
Got 2 of those went on just fine
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#8
Lexus Champion
Thread Starter
The seal an integral part of the Nachi bearing assembly.
Perhaps you are referring to the hub seal that is purchased from the dealer??
In any event event, it appears necessary to source the correct bearing (sealed as from the factory) from a Toyota parts distributor in Japan....
If Toyota expects customers to pay premium prices for a wheel bearing then they should provide the CORRECT premium OEM part.
Have noticed of late hardware is not the original gold zinc dichromate plating but less durable zinc plating...
I shouldn't have to inquire where stuff is coming from or worry if original correct factory parts are compromised when purchasing from a dealer.
Perhaps you are referring to the hub seal that is purchased from the dealer??
In any event event, it appears necessary to source the correct bearing (sealed as from the factory) from a Toyota parts distributor in Japan....
If Toyota expects customers to pay premium prices for a wheel bearing then they should provide the CORRECT premium OEM part.
Have noticed of late hardware is not the original gold zinc dichromate plating but less durable zinc plating...
I shouldn't have to inquire where stuff is coming from or worry if original correct factory parts are compromised when purchasing from a dealer.
#9
Racer
The seal an integral part of the Nachi bearing assembly.
Perhaps you are referring to the hub seal that is purchased from the dealer??
In any event event, it appears necessary to source the correct bearing (sealed as from the factory) from a Toyota parts distributor in Japan....
If Toyota expects customers to pay premium prices for a wheel bearing then they should provide the CORRECT premium OEM part.
Have noticed of late hardware is not the original gold zinc dichromate plating but less durable zinc plating...
I shouldn't have to inquire where stuff is coming from or worry if original correct factory parts are compromised when purchasing from a dealer.
Perhaps you are referring to the hub seal that is purchased from the dealer??
In any event event, it appears necessary to source the correct bearing (sealed as from the factory) from a Toyota parts distributor in Japan....
If Toyota expects customers to pay premium prices for a wheel bearing then they should provide the CORRECT premium OEM part.
Have noticed of late hardware is not the original gold zinc dichromate plating but less durable zinc plating...
I shouldn't have to inquire where stuff is coming from or worry if original correct factory parts are compromised when purchasing from a dealer.
#11
Racer
#12
Racer
sadly I learned about koyo after the timkens were installed. But price wise it came out to be the same with seals and bearings
#13
Lexus Champion
Thread Starter
This appears to be a better part.
Can you post a close-up image of the P.N. from the bearing shell
#15
Lexus Test Driver
iTrader: (1)
I'm ready to learn something new here, but ...
None of the bearings I see in the preceding posts appear to have seals. Those might be plastic shields or cages, but they will do hardly anything to seal the grease in and the dirt out.
Bearings are made with varying grades of tightness of seal (specified as "light contact," etc.), but none of the bearings I can see in the photos show anything qualifying to be called a "seal" of any type.
It seems the sealing function in this design is done by a separate part as shown in post #7.
So as long as the different cage / shield design on the replacement bearing does not interfere with the separate bearing seal, then I would not be concerned.
None of the bearings I see in the preceding posts appear to have seals. Those might be plastic shields or cages, but they will do hardly anything to seal the grease in and the dirt out.
Bearings are made with varying grades of tightness of seal (specified as "light contact," etc.), but none of the bearings I can see in the photos show anything qualifying to be called a "seal" of any type.
It seems the sealing function in this design is done by a separate part as shown in post #7.
So as long as the different cage / shield design on the replacement bearing does not interfere with the separate bearing seal, then I would not be concerned.