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Ball Bearings

From Bike Collectives Wiki

Revision as of 18:00, 13 January 2007 by Jonathan (talk | contribs)

(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)

Loose Ball Bearings

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.

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[DBReplication] ChronologyProtector fetching positions for 00aba87f0d2b34d22fa7da60bd405aff
[DBReplication] Wikimedia\Rdbms\ChronologyProtector::applySessionReplicationPosition: DEFAULT (database_staging) has no position
[DBConnection] Wikimedia\Rdbms\LoadBalancer::lazyLoadReplicationPositions: executed chronology callback.
[DBConnection] Wikimedia\Rdbms\LoadBalancer::getLocalConnection: opened new connection for local/0
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[ContentHandler] Registered handler for wikitext: WikitextContentHandler
[DBConnection] Wikimedia\Rdbms\LoadBalancer::getLocalConnection: reused a connection for local/0
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[DBConnection] Wikimedia\Rdbms\LoadBalancer::getLocalConnection: reused a connection for local/0
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[DBConnection] Wikimedia\Rdbms\LoadBalancer::getLocalConnection: reused a connection for local/0
[DBQuery] MediaWiki\Revision\RevisionStore::getRelativeRevision [0s] database_staging: SELECT rev_id FROM `mw_revision` IGNORE INDEX (rev_timestamp) WHERE rev_page = 1660 AND (rev_timestamp < '20070113180015' OR (rev_timestamp = '20070113180015' AND rev_id < 2198 )) ORDER BY rev_timestamp DESC,rev_id DESC LIMIT 1
[DBConnection] Wikimedia\Rdbms\LoadBalancer::getLocalConnection: reused a connection for local/0
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TransformationalImageHandler::doTransform: returning unscaled image
File::transform: Doing stat for mwstore://local-backend/local-thumb/8/80/Loose_ball_bearings.jpg/165px-Loose_ball_bearings.jpg
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Sizes

Grades

See Also