7800 DA hub bearings?
06-23-21, 06:37 AM
#1
Senior Member
Thread Starter
7800 DA hub bearings?
hello all,
so.. was testing my DA 7800 wheels.. and when i spun them up in the stand.. i can here the sound of the bearing kinda knocking into each other... its not rough... its just a little clack.. every so often... so great... time to repack... or past time... but im going to pack them... replace the bearings.. inspect.. but im not at all sure what material to go with... stainless steel or chrome steel.... i would rather use what ever it was original.. i know its 3/16 and i need 14 a side...
what is a good source for these... i was told wheel manufacture. sells the item ... but any way... stainless steel or chrome steel.... can i stick with G25? wow... lots of silly questions today... lol
so.. was testing my DA 7800 wheels.. and when i spun them up in the stand.. i can here the sound of the bearing kinda knocking into each other... its not rough... its just a little clack.. every so often... so great... time to repack... or past time... but im going to pack them... replace the bearings.. inspect.. but im not at all sure what material to go with... stainless steel or chrome steel.... i would rather use what ever it was original.. i know its 3/16 and i need 14 a side...
what is a good source for these... i was told wheel manufacture. sells the item ... but any way... stainless steel or chrome steel.... can i stick with G25? wow... lots of silly questions today... lol
06-23-21, 08:28 AM
#3
I'm good to go!
Join Date: Jul 2017
Location: Mississippi
Posts: 15,101
Bikes: Tarmac Disc Comp Di2 - 2020
Mentioned: 51 Post(s)
Tagged: 0 Thread(s)
Quoted: 6255 Post(s)
Liked 4,858 Times
in
3,348 Posts
You might be hearing little bits of contamination that got in the lube. Little bits of grit, sand, etc.
And even if it is sand and grit, bearings are pretty hard. They'll generally crush the grit and sand to dust and it will be a non issue if you regularly re-lube them.
Bearings, even contaminated bearings should last a long time. 40,000 to 50,000 miles easily and probably more since I'm just throwing out a number. I doubt the bearings are any different that the bearings in my car, and they see worse and more extreme heat and conditions.
If you are going to replace bearings for wear, then I'd think replacing the cones and races at the same time would be prudent.
And even if it is sand and grit, bearings are pretty hard. They'll generally crush the grit and sand to dust and it will be a non issue if you regularly re-lube them.
Bearings, even contaminated bearings should last a long time. 40,000 to 50,000 miles easily and probably more since I'm just throwing out a number. I doubt the bearings are any different that the bearings in my car, and they see worse and more extreme heat and conditions.
If you are going to replace bearings for wear, then I'd think replacing the cones and races at the same time would be prudent.
06-23-21, 09:06 AM
#4
Senior Member
Join Date: Jul 2013
Location: Nor-Cal
Posts: 3,767
Bikes: lots
Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
Quoted: 1958 Post(s)
Liked 2,932 Times
in
1,489 Posts
Replace the balls if you want to, for sure check the cones. The cups are very hard to replace for a home mechanic, and they rarely if ever show any wear. Cones are another story.
Likes For cxwrench:
06-23-21, 11:06 AM
#5
Senior Member
C-25 is a higher quality than we need. Saying that, they are all I use. If they have their original finish then they can be reused.
06-23-21, 05:28 PM
#6
Really Old Senior Member
Grade 25 is beyond "good enough".
Since you use 56 bearing balls per wheel SET, buy a couple bags and save a bit on shipping for the future.
You can buy 3/16" balls at a local bearing supply store. look for an industrial type that sell hydraulic pumps, hose, BEARINGS etc.
This place has real good prices on somewhat larger quantities,
https://www.amazon.com/Inch-Chrome-S...01N8XZOPI?th=1
Since you use 56 bearing balls per wheel SET, buy a couple bags and save a bit on shipping for the future.
You can buy 3/16" balls at a local bearing supply store. look for an industrial type that sell hydraulic pumps, hose, BEARINGS etc.
This place has real good prices on somewhat larger quantities,
https://www.amazon.com/Inch-Chrome-S...01N8XZOPI?th=1
