ball bearings from Mcmaster
#1
Senior Member
Thread Starter
Join Date: Mar 2008
Posts: 64
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
ball bearings from Mcmaster
Going to do a rear and front hub servicing and wanted to know if mcmaster has compatible ball bearings...
let me know if these are the same as grade 25 bearings from JENSONUSA
here are the sizes available ...
Diameter
1/16" | 5/64" | 1/12" | 3/32" | 7/64" | 1/8" | 9/64" | 5/32" | 11/64" | 3/16" | 7/32" | 1/4" | 17/64" | 9/32" | 5/16" | 11/32" | 3/8" | 13/32" | 7/16" | 15/32" | 1/2" | 17/32" | 9/16" | 19/32" | 5/8" | 21/32" | 11/16" | 23/32" | 3/4" | 25/32" | 13/16" | 7/8" | 15/16" | 1" | 1 mm | 1.5 mm | 2 mm | 2.5 mm | 3 mm | 3.5 mm | 4 mm | 4.5 mm | 5 mm | 5.5 mm | 6 mm | 6.5 mm | 7 mm | 8 mm | 9 mm | 10 mm | 12 mm | 13 mm | 14 mm | 15 mm | 16 mm | 18 mm | 24 mm
EX. pack of 100 is $4.70 (1/4") =? 9 1/4" grade 25?
E52100 Alloy Steel: Bearing-quality chrome-finished steel balls are through-hardened. Rockwell hardness is C60-C67
let me know if these are the same as grade 25 bearings from JENSONUSA
here are the sizes available ...
Diameter
1/16" | 5/64" | 1/12" | 3/32" | 7/64" | 1/8" | 9/64" | 5/32" | 11/64" | 3/16" | 7/32" | 1/4" | 17/64" | 9/32" | 5/16" | 11/32" | 3/8" | 13/32" | 7/16" | 15/32" | 1/2" | 17/32" | 9/16" | 19/32" | 5/8" | 21/32" | 11/16" | 23/32" | 3/4" | 25/32" | 13/16" | 7/8" | 15/16" | 1" | 1 mm | 1.5 mm | 2 mm | 2.5 mm | 3 mm | 3.5 mm | 4 mm | 4.5 mm | 5 mm | 5.5 mm | 6 mm | 6.5 mm | 7 mm | 8 mm | 9 mm | 10 mm | 12 mm | 13 mm | 14 mm | 15 mm | 16 mm | 18 mm | 24 mm
EX. pack of 100 is $4.70 (1/4") =? 9 1/4" grade 25?
E52100 Alloy Steel: Bearing-quality chrome-finished steel balls are through-hardened. Rockwell hardness is C60-C67
Last edited by yngwie; 05-13-08 at 07:57 AM.
#2
Senior Member
Join Date: Dec 2007
Location: Ballard, WA
Posts: 150
Bikes: '98 Kona Kula, '8X Univega Sportour SS, '81 Trek 710
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
The only ball bearings I could find are Gr25. Mcmaster part no. 9528K15 for 1/4". As far as I know they should be just the same as what you buy from JensonUSA, and they probably come from the same place anyway!
#4
Senior Member
Thread Starter
Join Date: Mar 2008
Posts: 64
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
yea I found the description...grade 25 AFFIRMATIVE...ill just order that from them...plus
btw...
there is also
GRADE 24 (lower the better?)
Ball Material> Type 440C Stainless Steel
I dunno about this but it cost $12.40 for a pack of 50...eh Ill just get the 100 pack of 1/4" and 3/16" for repacking hubs...nice to know though
btw...
there is also
GRADE 24 (lower the better?)
Ball Material> Type 440C Stainless Steel
I dunno about this but it cost $12.40 for a pack of 50...eh Ill just get the 100 pack of 1/4" and 3/16" for repacking hubs...nice to know though
#5
Junior Member
Join Date: Sep 2007
Location: Santa Barbara, CA
Posts: 8
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
This assorted loose bearing kit from www.loosescrews.com turned out to be a good buy for me:
https://www.loosescrews.com/index.cgi...d=863550110113
https://www.loosescrews.com/index.cgi...d=863550110113
#6
Senior Member
Thread Starter
Join Date: Mar 2008
Posts: 64
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
This assorted loose bearing kit from www.loosescrews.com turned out to be a good buy for me:
https://www.loosescrews.com/index.cgi...d=863550110113
https://www.loosescrews.com/index.cgi...d=863550110113
coz your buying 5 sets of 100 packs for $24...
thanks for the contribution...although I dont need all those other sizes and might get free shipping here at work when I add it on to the order...
#7
Elitist Troglodyte
Join Date: Jun 2006
Location: Dallas
Posts: 6,925
Bikes: 03 Raleigh Professional (steel)
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Likes: 0
Liked 1 Time
in
1 Post
Yes, lower grade is better. The grade number equates to tolerance and smaller tolerance is better.
Btw, don't mix batches, even from the same supplier. Uniformity of size between bearings is much more critical than absolute size. Ball bearings are spec'd for close uniformity within the same batch, and different batches may be significantly different in size.
Btw, don't mix batches, even from the same supplier. Uniformity of size between bearings is much more critical than absolute size. Ball bearings are spec'd for close uniformity within the same batch, and different batches may be significantly different in size.
__________________
Stupidity got us into this mess - why can't it get us out?
- Will Rogers
Stupidity got us into this mess - why can't it get us out?
- Will Rogers
#8
Really Old Senior Member
I'd pick up 2 packs of them, in hopes of getting the same batch#. Of course, I just use new bearings when I repack. With my bad eyes, it's just much simpler than trying to clean and then inspect them with a magnifying glass.
I do kind of wonder how much "worse" the higher numbers actually are. They can't be too bad without grinding things down, considering that the ARE BALL BEARINGS!
I do kind of wonder how much "worse" the higher numbers actually are. They can't be too bad without grinding things down, considering that the ARE BALL BEARINGS!
#9
Perineal Pressurized
Join Date: Oct 2003
Location: In Ebritated
Posts: 6,555
Mentioned: 0 Post(s)
Tagged: 1 Thread(s)
Quoted: 3 Post(s)
Likes: 0
Liked 2 Times
in
2 Posts
Have you ever seen a bearing manufacturing operation? There is no batch, it's a continuous operation. You can take a bearing for each day over a 30 day period and be pretty well assured that they'll function as advertised.
#10
Senior Member
Join Date: Apr 2008
Posts: 111
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
that whole argument assumes the bearings are made in the same factory, a supplier may have gotten bearings from several different manufacturers over any given period of time.
#11
Bikaholic
Join Date: Dec 2006
Location: Western, Michigan
Posts: 1,461
Bikes: Trek Fuel 90, Giant OCR, Rans Screamer Tandem
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
Just a word of caution, McMaster products are rarely brand specific or consistently sourced from the same supplier from one batch to the next. There are sometimes minor compatibility issues when items come from two different lots as they were purchased from the "flavor of the month" supplier. I have seen this on some occasions and avoid non branded products most of the time for this reason. For what it's worth, I've always felt that the savings are often a false economy in these situations. I don't mind paying a little more for predictable and repeatable quality. YMMV
#12
Senior Member
Join Date: Aug 2007
Location: Northampton, MA
Posts: 956
Bikes: Iron Monkey: a junkyard steel 26" slick-tired city bike. Grey Fox: A Trek 7x00 frame, painted, with everything built, from spokes up. Jet Jaguar: A 92 Cannondale R900 frame, powder coated matte black with red and aluminum highlights.
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Likes: 0
Liked 1 Time
in
1 Post
That said, they are the single best mail order house I've ever used for anything, ever.
#13
Bikaholic
Join Date: Dec 2006
Location: Western, Michigan
Posts: 1,461
Bikes: Trek Fuel 90, Giant OCR, Rans Screamer Tandem
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts