Ball Bearings: Difference between revisions
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[[Image:loose_ball_bearings.jpg|thumb|Loose Ball Bearings]] | [[Image:loose_ball_bearings.jpg|thumb|Loose Ball Bearings]] | ||
== Sizes == | |||
To determine what size a bearing is use this [[ruler]]. The most common sizes are: | To determine what size a bearing is use this [[ruler]]. The most common sizes are: | ||
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You can buy bearings from bicycle part [[distributors]] '''or''' from bearing companies. | You can buy bearings from bicycle part [[distributors]] '''or''' from bearing companies. | ||
== Grades == | |||
Bearings come in different ''Grades'', the important thing to remember is '''quality and cost increase as the grade number gets lower''', so 100 grade is better than 1000 grade. Grade 25 is the best you can buy, but you can use bearings all the way up to grade 800. | Bearings come in different ''Grades'', the important thing to remember is '''quality and cost increase as the grade number gets lower''', so 100 grade is better than 1000 grade. Grade 25 is the best you can buy, but you can use bearings all the way up to grade 800. | ||
'''NOTE:''' Avoid mixing different kinds of bearings as they are made in batches, and bearings from the same batch work better together. It may be tempting to consolidate bearing containers when one gets low, but it is better to just let them run out. | '''NOTE:''' Avoid mixing different kinds of bearings as they are made in batches, and bearings from the same batch work better together. It may be tempting to consolidate bearing containers when one gets low, but it is better to just let them run out. | ||
== See Also == | |||
* [[Park Tool SBC-1 Spoke Ruler]] | |||
Revision as of 18:00, 13 January 2007
Sizes
To determine what size a bearing is use this ruler. The most common sizes are:
- 1/4" Found in Rear Hubs and Bottom Brackets
- 7/32"
- 3/16" Found in Front Hubs
- 5/32"
- 1/8"
You can buy bearings from bicycle part distributors or from bearing companies.
Grades
Bearings come in different Grades, the important thing to remember is quality and cost increase as the grade number gets lower, so 100 grade is better than 1000 grade. Grade 25 is the best you can buy, but you can use bearings all the way up to grade 800.
NOTE: Avoid mixing different kinds of bearings as they are made in batches, and bearings from the same batch work better together. It may be tempting to consolidate bearing containers when one gets low, but it is better to just let them run out.