Ofmega. Hub Cartridge bearing removal
10-22-23, 04:54 PM
#1
buy my bikes
Thread Starter
Join Date: Jun 2014
Location: Michigan
Posts: 1,803
Bikes: my very own customized GUNNAR CrossHairs
Mentioned: 19 Post(s)
Tagged: 0 Thread(s)
Quoted: 519 Post(s)
Liked 429 Times
in
249 Posts
Ofmega. Hub Cartridge bearing removal
For other cartridge bearing hubs I believe there was a shoulder on the axle top knock out one of the bearings. Then the opposite side could be knocked out.
The axle for the Ofmega is nearly straight, and the very slight shoulder doesn’t look to be used to remove the bearing.
How do I remove these bearings? Maybe a miniature version of a headset tool with four springy spline deals? I could probably cut a piece of copper pipe.
also- are these hubs worth the effort?
still trying to bust the freewheel loose too.
I’m glad I enjoy this hobby 😬
thanks.
The axle for the Ofmega is nearly straight, and the very slight shoulder doesn’t look to be used to remove the bearing.
How do I remove these bearings? Maybe a miniature version of a headset tool with four springy spline deals? I could probably cut a piece of copper pipe.
also- are these hubs worth the effort?
still trying to bust the freewheel loose too.
I’m glad I enjoy this hobby 😬
thanks.
10-22-23, 06:06 PM
#2
Senior Member
Join Date: Feb 2012
Location: Rochester, NY
Posts: 18,100
Bikes: Stewart S&S coupled sport tourer, Stewart Sunday light, Stewart Commuting, Stewart Touring, Co Motion Tandem, Stewart 3-Spd, Stewart Track, Fuji Finest, Mongoose Tomac ATB, GT Bravado ATB, JCP Folder, Stewart 650B ATB
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4212 Post(s)
Liked 3,883 Times
in
2,318 Posts
The first usual is to insert an appropriate punch like thing into the hub and drive/hammer out the bearing. Generally when doing this stuff on press fitted cartridge bearings with no "spec" tooling replacement of the bearing is suggested. Then the only thing is to figure out how to assemble all w/out harming the bearings. Andy
__________________
AndrewRStewart
AndrewRStewart
10-22-23, 06:13 PM
#3
SE Wis
Join Date: Apr 2005
Location: Milwaukee, WI
Posts: 10,517
Bikes: '68 Raleigh Sprite, '02 Raleigh C500, '84 Raleigh Gran Prix, '91 Trek 400, 2013 Novara Randonee, 1990 Trek 970
Mentioned: 40 Post(s)
Tagged: 0 Thread(s)
Quoted: 2747 Post(s)
Liked 3,401 Times
in
2,058 Posts
Likes For dedhed:
10-22-23, 06:30 PM
#4
Senior Member
Join Date: Apr 2009
Location: New Rochelle, NY
Posts: 38,729
Bikes: too many bikes from 1967 10s (5x2)Frejus to a Sumitomo Ti/Chorus aluminum 10s (10x2), plus one non-susp mtn bike I use as my commuter
Mentioned: 140 Post(s)
Tagged: 1 Thread(s)
Quoted: 5793 Post(s)
Liked 2,595 Times
in
1,438 Posts
I use a hollow wall anchor which opens behind the bearing, allowing me to tap it out with a punch.
__________________
FB
Chain-L site
An ounce of diagnosis is worth a pound of cure.
Just because I'm tired of arguing, doesn't mean you're right.
“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN
WARNING, I'm from New York. Thin skinned people should maintain safe distance.
FB
Chain-L site
An ounce of diagnosis is worth a pound of cure.
Just because I'm tired of arguing, doesn't mean you're right.
“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN
WARNING, I'm from New York. Thin skinned people should maintain safe distance.
Likes For FBinNY:
10-22-23, 08:20 PM
#5
Old fart
Join Date: Nov 2004
Location: Appleton WI
Posts: 24,792
Bikes: Several, mostly not name brands.
Mentioned: 153 Post(s)
Tagged: 0 Thread(s)
Quoted: 3591 Post(s)
Liked 3,401 Times
in
1,935 Posts
A tool like this often works:
Likes For JohnDThompson:
10-22-23, 09:41 PM
#6
Senior Member
Join Date: Apr 2009
Location: New Rochelle, NY
Posts: 38,729
Bikes: too many bikes from 1967 10s (5x2)Frejus to a Sumitomo Ti/Chorus aluminum 10s (10x2), plus one non-susp mtn bike I use as my commuter
Mentioned: 140 Post(s)
Tagged: 1 Thread(s)
Quoted: 5793 Post(s)
Liked 2,595 Times
in
1,438 Posts
Those worked fine, though they sometimes had a tendency to close and push through.
I modified a punch by grinding it back on 2 sided leaving a small tab in the.middle. That would fit into the gap and prevent the two sides from closing and fslling through.
I modified a punch by grinding it back on 2 sided leaving a small tab in the.middle. That would fit into the gap and prevent the two sides from closing and fslling through.
__________________
FB
Chain-L site
An ounce of diagnosis is worth a pound of cure.
Just because I'm tired of arguing, doesn't mean you're right.
“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN
WARNING, I'm from New York. Thin skinned people should maintain safe distance.
FB
Chain-L site
An ounce of diagnosis is worth a pound of cure.
Just because I'm tired of arguing, doesn't mean you're right.
“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN
WARNING, I'm from New York. Thin skinned people should maintain safe distance.
10-23-23, 08:39 AM
#7
Senior Member
Join Date: Oct 2017
Location: NJ
Posts: 628
Bikes: 68 SS, 72 Fuji Finest, 72 PX-10, 77 Pana Pro 7000, 84 Pinnarello Treviso NR, 84 Trek 520, 88 Project KOM, 90 Trek 750, 91 Trek 930
Mentioned: 11 Post(s)
Tagged: 0 Thread(s)
Quoted: 185 Post(s)
Liked 206 Times
in
143 Posts
Likes For dmark:
10-23-23, 11:25 AM
#8
Senior Member
Rule number 2 from 10 good rules; Neveer argue with an idiot. People watching may not be able to tell the difference.
10-23-23, 01:58 PM
#9
Senior Member
Join Date: Apr 2011
Posts: 7,088
Mentioned: 41 Post(s)
Tagged: 0 Thread(s)
Quoted: 4421 Post(s)
Liked 1,569 Times
in
1,031 Posts
If you're going to attempt to overhaul the bearings, don't remove them.
If they bearings are to be replaced, use whatever fits through the holes that you can hit with a hammer. Alternate sides.
No real reason for a specialty tool.
If they bearings are to be replaced, use whatever fits through the holes that you can hit with a hammer. Alternate sides.
No real reason for a specialty tool.
10-23-23, 02:25 PM
#10
señor miembro
Join Date: Dec 2018
Location: Pac NW
Posts: 6,629
Bikes: '70s - '80s Campagnolo
Mentioned: 92 Post(s)
Tagged: 0 Thread(s)
Quoted: 3891 Post(s)
Liked 6,491 Times
in
3,213 Posts
Likes For SurferRosa:
10-23-23, 05:41 PM
#11
buy my bikes
Thread Starter
Join Date: Jun 2014
Location: Michigan
Posts: 1,803
Bikes: my very own customized GUNNAR CrossHairs
Mentioned: 19 Post(s)
Tagged: 0 Thread(s)
Quoted: 519 Post(s)
Liked 429 Times
in
249 Posts
I just had my LBS order a bunch of stuff for a fixed gear bodge-ect that might go to my son to use and abuse.
thanks for the advice everyone!
Likes For mrv:
10-24-23, 03:49 PM
#12
Senior Member
Join Date: Apr 2016
Posts: 1,245
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 505 Post(s)
Liked 437 Times
in
336 Posts
To remove a seal just stab it with a small sharp thing - dental pick, sewing machine needle - and lift it out. Prying with a screwdriver tends to chew the edge, but a pin prick usually closes up without a trace.
Likes For grumpus:
