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Old 05-28-2004, 11:39 AM   #1
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Default Ceramic bearings/ball ABEC Grade

Is lower grade better or higher is better.

Boca ceramic bearings grade 1
Acer Racing ceramic bearings grade 5
RC4Less ceramic bearings grade 7
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Old 05-28-2004, 11:55 AM   #2
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in abec ratings higher = better.
a 7 is far better than a 1
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Old 05-28-2004, 11:56 AM   #3
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Default Re: Ceramic bearings/ball ABEC Grade

The higher the number is better than the lower number. Mostly used for skate bearings.

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ABEC stands for Annular Bearing Engineer Council. The ABEC-1, ABEC-3, ABEC-5 ratings you see for bearings are supposed to be indications that the bearings meet the stated ABEC specifications of a certain precision level. ABEC-5's are supposed to be fastest but there is yet no hard evidence that in real world situations that this is true.
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Old 05-28-2004, 12:06 PM   #4
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According to the Acer website the lower the number the better.
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Old 05-28-2004, 12:41 PM   #5
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Quote:
Originally posted by koabich
According to the Acer website the lower the number the better.
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Originally posted by Aku-Man
Boca ceramic bearings grade 1
Acer Racing ceramic bearings grade 5
RC4Less ceramic bearings grade 7
That would mean Boca bearings are better than theirs! LOL!
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Old 05-28-2004, 02:24 PM   #6
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weird? difference in standards? in rollerblades... ABEC 1s are the lowest quality.. and i think it goes all the way up to 7s... my rollerblades have ABEC 5s on them. do rc car bearings use the same form of measurement.

can anyone confirm? so if its the same as rollerblades, that means rc4less has the highest rated bearings.
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Old 05-28-2004, 03:11 PM   #7
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I know theres grade 1~9, but different site said differently.

This site explain a bit. According to this site. Acer bearing should be better for rc cars.

http://www.rcbearings.com/bb_tech.htm

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Old 05-28-2004, 09:04 PM   #8
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how about the prising? it could tell the quality from the price most of the time
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Old 05-29-2004, 01:37 AM   #9
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the higher the number, the smaller the tollerances.

so instead of |.| flat races with poor tolerances in the lower abec ratings... in the higher abec rating bearings the races are actually curved more to support the balls due to better tolerances, allowing for higher side loads etc.

higher is better.

with ceramics youll probably find most, if not all bearing mobs only make true full ceramic bearings in larger sized bearings than what we'll use in our cars.
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Old 05-31-2004, 12:07 PM   #10
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oic what u meant is that the higher the no. the deeper the ball rail is.
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Old 05-31-2004, 12:20 PM   #11
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For bearings, the higher the number that better according to bearing companies I have talked to(aka the guys who actually make them)...

For BALLS though, the lower the number the better. I've tried sourcing ceramic balls for a while now(not much luck) and you could buy them in 1, 3, 5, 10, or 25....with 25 being the lowest ones. This was a production tolerance rating of some sorts, basically how round the balls are and how much they varied from another.....even the 25 ones were still easily good enough for RC.


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