Micro Bearings vs Minin Bearings

Micro Bearings vs Minin Bearings

Post by Bob Cardon » Sun, 11 Nov 2001 23:32:47


I recently bought 2 pairs of skates each with the new bearing
technology.  The  Rollerblade Core Carbons with Ninja Mini Miser
Bearings and the K2 Catalyst with their own K2  brand of Micro
Bearings.

For a couple of reasons, I wasn't thrilled with the Mini  Bearings on
the Core Carbons, but they did seem fast.  On the other hand , the
Micro Bearings on  the Catalyst skates, seemed to get slower and
slower as I skated on them.  If I would go fast on the K2 bearings,
they would make a sounds like a whoosh , whoosh noise as the wheels
turned. Both the left and right skates did this equally.   This could
be made worse by skating on the inside or outside edge of the wheel in
other words, side loading the bearings. I could even feel this "drag"
as I skated.

Well the other night after a 12 mile skate, I decided to see if the
Core Carbon wheels and bearings would fit the K2 skates, as I wasn't
even using the Core Carbons anymore.  I swapped the entire wheel
assembly. bearings, spacers and wheels onto the Catalyst Skates. The
axle size was exactly the same on both skates.

WOW!!!! what a difference.  The K2 skates are flying now and
absolutely no weird noises.  I had  lubed the Ninja Mini Misers with
some Sonic Super Gel some weeks back ,  and that seems to have removed
a great deal of the original  noise that I noticed  from the Mini
Bearings.

Anyway, if you have any K2 skates with these Micro Bearings and they
seem "sluggish", try getting the bearings changed and I think you will
see a major difference.

Bob

 
 
 

Micro Bearings vs Minin Bearings

Post by Mike van Er » Mon, 12 Nov 2001 08:42:02

Hi Bob,

Are these two bearings the same size, and are they 688s or 698s?

Cheers,
Mike.


Quote:
> I recently bought 2 pairs of skates each with the new bearing
> technology.  The  Rollerblade Core Carbons with Ninja Mini Miser
> Bearings and the K2 Catalyst with their own K2  brand of Micro
> Bearings.

<snip?

 
 
 

Micro Bearings vs Minin Bearings

Post by Bob Cardon » Mon, 12 Nov 2001 12:40:31

Mike,

I think the Micros ( which are the larger of the two) are the 688s and
the Minis are the 698s.  ( I hope I don't have that backwards....)
Anyway, they are not the same size.  

Bob


Quote:
>Hi Bob,

>Are these two bearings the same size, and are they 688s or 698s?

>Cheers,
>Mike.



>> I recently bought 2 pairs of skates each with the new bearing
>> technology.  The  Rollerblade Core Carbons with Ninja Mini Miser
>> Bearings and the K2 Catalyst with their own K2  brand of Micro
>> Bearings.
><snip?


 
 
 

Micro Bearings vs Minin Bearings

Post by Dary » Thu, 15 Nov 2001 06:37:48

The micros (688) are actually the smaller of the two.


Quote:
> Mike,

> I think the Micros ( which are the larger of the two) are the 688s and
> the Minis are the 698s.  ( I hope I don't have that backwards....)
> Anyway, they are not the same size.

> Bob


> >Hi Bob,

> >Are these two bearings the same size, and are they 688s or 698s?

> >Cheers,
> >Mike.



> >> I recently bought 2 pairs of skates each with the new bearing
> >> technology.  The  Rollerblade Core Carbons with Ninja Mini Miser
> >> Bearings and the K2 Catalyst with their own K2  brand of Micro
> >> Bearings.
> ><snip?

 
 
 

Micro Bearings vs Minin Bearings

Post by Bob Cardon » Thu, 15 Nov 2001 09:08:49

Well then I guess K2 and Rollerblade are confused.  K2 claims the
larger bearings are Microbearings and Rollerblade Claims the smaller
are Minis .  

AH   ... what do they know?  :)

Bob

Quote:

>The micros (688) are actually the smaller of the two.



>> Mike,

>> I think the Micros ( which are the larger of the two) are the 688s and
>> the Minis are the 698s.  ( I hope I don't have that backwards....)
>> Anyway, they are not the same size.

>> Bob


>> >Hi Bob,

>> >Are these two bearings the same size, and are they 688s or 698s?

>> >Cheers,
>> >Mike.



>> >> I recently bought 2 pairs of skates each with the new bearing
>> >> technology.  The  Rollerblade Core Carbons with Ninja Mini Miser
>> >> Bearings and the K2 Catalyst with their own K2  brand of Micro
>> >> Bearings.
>> ><snip?

 
 
 

Micro Bearings vs Minin Bearings

Post by Bob Cardon » Thu, 15 Nov 2001 09:31:39

I checked...  K2 and Rollerblade are correct.

You are wrong!

http://www.swatskates.com/bearings.htm

Bob

Quote:

>The micros (688) are actually the smaller of the two.



>> Mike,

>> I think the Micros ( which are the larger of the two) are the 688s and
>> the Minis are the 698s.  ( I hope I don't have that backwards....)
>> Anyway, they are not the same size.

>> Bob


>> >Hi Bob,

>> >Are these two bearings the same size, and are they 688s or 698s?

>> >Cheers,
>> >Mike.



>> >> I recently bought 2 pairs of skates each with the new bearing
>> >> technology.  The  Rollerblade Core Carbons with Ninja Mini Miser
>> >> Bearings and the K2 Catalyst with their own K2  brand of Micro
>> >> Bearings.
>> ><snip?

 
 
 

Micro Bearings vs Minin Bearings

Post by Bill Fuhrman » Thu, 15 Nov 2001 12:38:21

Quote:

> >The micros (688) are actually the smaller of the two.



Quote:
> I checked...  K2 and Rollerblade are correct.
> You are wrong!
> http://www.swatskates.com/bearings.htm

Actually, swatskates agrees with Daryl.  688s are micros and 698s are minis.

688s have an OD of 16mm and a thickness of 5mm
698s have an OD of 19mm and a thickness of 6mm

Swat Skates doesn't have the dimensions on their web site so they are only
helpful for the names.

For the dimensions check out
http://www.china-ningbo.com/netco/products_e02.htm
or
http://www.bocabearings.com/pricing3.htm

 
 
 

Micro Bearings vs Minin Bearings

Post by Dary » Thu, 15 Nov 2001 13:16:06

If you go to www.explorewheels.com and click on "race" you will be able to
see the size differences between the 688 micro and 698 mini bearings (along
with the 608 standard bearing). Explore is one of the few wheel
manufacturers that make a wheel for the 698 mini bearings.


Quote:

> I checked...  K2 and Rollerblade are correct.

> You are wrong!

> http://www.swatskates.com/bearings.htm

> Bob


> >The micros (688) are actually the smaller of the two.



> >> Mike,

> >> I think the Micros ( which are the larger of the two) are the 688s and
> >> the Minis are the 698s.  ( I hope I don't have that backwards....)
> >> Anyway, they are not the same size.

> >> Bob


> >> >Hi Bob,

> >> >Are these two bearings the same size, and are they 688s or 698s?

> >> >Cheers,
> >> >Mike.



> >> >> I recently bought 2 pairs of skates each with the new bearing
> >> >> technology.  The  Rollerblade Core Carbons with Ninja Mini Miser
> >> >> Bearings and the K2 Catalyst with their own K2  brand of Micro
> >> >> Bearings.
> >> ><snip?

 
 
 

Micro Bearings vs Minin Bearings

Post by Bob Cardon » Thu, 15 Nov 2001 20:40:31

Quote:


>> >The micros (688) are actually the smaller of the two.



>> I checked...  K2 and Rollerblade are correct.
>> You are wrong!
>> http://www.swatskates.com/bearings.htm

>Actually, swatskates agrees with Daryl.  688s are micros and 698s are minis.

>688s have an OD of 16mm and a thickness of 5mm
>698s have an OD of 19mm and a thickness of 6mm

>Swat Skates doesn't have the dimensions on their web site so they are only
>helpful for the names.

>For the dimensions check out
>http://www.china-ningbo.com/netco/products_e02.htm
>or
>http://www.bocabearings.com/pricing3.htm

Well I guess the confusion comes with the naming of the bearings.  The
Core Carbon skates come with Ninja  Mini Bearings which are the
smallest I have seen.  My K2 Catalyst came with MBT  Micro Bearings
which are large than the Minis.   Neither one of these bearings are
numbered, and that is why I wasn't sure of the numbering system.
Apparently they are named with no reference to their number??   Really
confusing.  Anyway, I think 608s rule.

Bob

 
 
 

Micro Bearings vs Minin Bearings

Post by RollerBo » Tue, 20 Nov 2001 12:35:22

Hmm,

I'm looking at the box that my RB E9 Carbons came in and it clearly says Micro
bearings. They also have a sticker on the frame that says Micro bearings. When I
look at the Ninja bearings under magnification they clearly say 688.

I agree with Bill and Daryl.
Micro = 688 (smallest)
Mini or Dwarf = 698

I know the K2 Catalyst uses 698 Mini or Dwarf bearings, although I believe K2
refers to them on their site as micro bearing technology. K2's marketing is
likely the source of the confusion.

RollerBob
http://www.rollerbob.com

Quote:

> Well I guess the confusion comes with the naming of the bearings.  The
> Core Carbon skates come with Ninja  Mini Bearings which are the
> smallest I have seen.  My K2 Catalyst came with MBT  Micro Bearings
> which are large than the Minis.   Neither one of these bearings are
> numbered, and that is why I wasn't sure of the numbering system.
> Apparently they are named with no reference to their number??   Really
> confusing.  Anyway, I think 608s rule.

> Bob

 
 
 

Micro Bearings vs Minin Bearings

Post by RollerBo » Tue, 20 Nov 2001 12:37:22

Hmm,

I'm looking at the box that my RB E9 Carbons came in and it clearly says Micro
bearings. They also have a sticker on the frame that says Micro bearings. When I
look at the Ninja bearings under magnification they clearly say 688.

I agree with Bill and Daryl.
Micro = 688 (smallest)
Mini or Dwarf = 698

I know the K2 Catalyst uses 698 Mini or Dwarf bearings, although I believe K2
refers to them on their site as micro bearing technology. K2's marketing is
likely the source of the confusion.

RollerBob
http://www.rollerbob.com

Quote:

> Well I guess the confusion comes with the naming of the bearings.  The
> Core Carbon skates come with Ninja  Mini Bearings which are the
> smallest I have seen.  My K2 Catalyst came with MBT  Micro Bearings
> which are large than the Minis.   Neither one of these bearings are
> numbered, and that is why I wasn't sure of the numbering system.
> Apparently they are named with no reference to their number??   Really
> confusing.  Anyway, I think 608s rule.

> Bob

 
 
 

Micro Bearings vs Minin Bearings

Post by Bob Cardon » Tue, 20 Nov 2001 20:25:12

Well here is the actual deal, if you look at the two bearings we are
talking about rather than a picture of them, description or numbering
system

The Ninja  Mini Misers which are on the Rollerblade Core Carbons Are
physically the smallest of the bearings when comparing them.

Th K2 Bearings which K2 Calls Microbearing technology are the larger
of the two.  

That is what my original post referred to.  As far as the numbering
system, they make no reference at all to it in either the K2 or
Rollerblade literature that I have seen.  

Bob

Quote:

>Hmm,

>I'm looking at the box that my RB E9 Carbons came in and it clearly says Micro
>bearings. They also have a sticker on the frame that says Micro bearings. When I
>look at the Ninja bearings under magnification they clearly say 688.

>I agree with Bill and Daryl.
>Micro = 688 (smallest)
>Mini or Dwarf = 698

>I know the K2 Catalyst uses 698 Mini or Dwarf bearings, although I believe K2
>refers to them on their site as micro bearing technology. K2's marketing is
>likely the source of the confusion.

>RollerBob
>http://www.rollerbob.com


>> Well I guess the confusion comes with the naming of the bearings.  The
>> Core Carbon skates come with Ninja  Mini Bearings which are the
>> smallest I have seen.  My K2 Catalyst came with MBT  Micro Bearings
>> which are large than the Minis.   Neither one of these bearings are
>> numbered, and that is why I wasn't sure of the numbering system.
>> Apparently they are named with no reference to their number??   Really
>> confusing.  Anyway, I think 608s rule.

>> Bob

 
 
 

Micro Bearings vs Minin Bearings

Post by Bob Cardon » Wed, 21 Nov 2001 11:30:22

OK, after I posted this morning I decided to call the bearing experts
that I talk to periodically, at  www.bocabearings.com

.Yes the 688 are the smallest and 698's are larger.  Apparently the
names attached to the numbered sizes are assigned depending on which
way the wind is blowing. Micro-- Mini-- are both listed with either
688 or 698, depending on the manufacturer. In one place I read that
they are all referred to as Micro bearings.  This is really confusing
and I feel sorry for someone that is trying to mail order bearings for
the skates using the name.

While I was on the phone, I asked the tech guy at Boca about these
smaller bearings. He told me that the main advantage , all other
things being equal, is that the smaller bearings have the capability
of spinning faster. Now why this is important , when comparing to a
608  that is designed for 10,000 rpm plus, I don't quite understand. I
think I figured out years ago that to run a 608 on the average Inline
Skate wheel, at it's designed speed range, you would be skating at
200-400 MPH... That fast, I'm not interested in  :)

He also told me that the smaller bearings should wear as well as the
608's.  I questioned him about "side loading" and the smaller bearings
tolerance for that.  He told me that side loading on Inline Skates is
minimal and that these smaller bearings should hold up as well as the
608s.  

Now, as far as the bearings that I got with my K2 Catalyst, which are
marked K2 and nothing else( No ABEC Rating at all ) , they are total
garbage. They don't roll well, are noisey and 'draggy" , and as posted
before, I removed them from my Catalyst skates.  K2 probably has many
owners of skates with these bearings, thinking that the skates are NG,
or the wheels, when in fact it is the bearings that suck!

The Ninja Mini-misers ( ABEC 5 )  , which I wasn't crazy about in the
beginning, and have since moved from my retired  Core Carbons to the
Catalysts, have proven to be very fast and seem to work well.  This is
since I cleaned them of the lubricant  that they were initially lubed
with which was great at attracting dirt, and re greased them with
Sonic Gel. They don't make noise anymore, seem to stay clean, and are
FAST!!  I am going to try and use them at least until the wheels that
they fit, wear out.  If they don't require excessive cleaning and stay
fast, I may replace the wheels and see just how long they last.

The tech person at Bocabearing also mentioned the "Sealed "
Maintenance free bearings that they sell.  These are not shielded, but
sealed.. He said that no bearing will last forever and remain clean
forever, but apparently these sealed bearings can go for years without
cleaning and lubing.  At that point you can buy a "kit" from Boca
Bearings and rejuvenate them back to original condition.

www.bocabearings.com

bob

Quote:

>Hmm,

>I'm looking at the box that my RB E9 Carbons came in and it clearly says Micro
>bearings. They also have a sticker on the frame that says Micro bearings. When I
>look at the Ninja bearings under magnification they clearly say 688.

>I agree with Bill and Daryl.
>Micro = 688 (smallest)
>Mini or Dwarf = 698

>I know the K2 Catalyst uses 698 Mini or Dwarf bearings, although I believe K2
>refers to them on their site as micro bearing technology. K2's marketing is
>likely the source of the confusion.

>RollerBob
>http://www.rollerbob.com


>> Well I guess the confusion comes with the naming of the bearings.  The
>> Core Carbon skates come with Ninja  Mini Bearings which are the
>> smallest I have seen.  My K2 Catalyst came with MBT  Micro Bearings
>> which are large than the Minis.   Neither one of these bearings are
>> numbered, and that is why I wasn't sure of the numbering system.
>> Apparently they are named with no reference to their number??   Really
>> confusing.  Anyway, I think 608s rule.

>> Bob