Thread: Pd a600
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Old 08-07-15, 06:54 PM
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Andrew R Stewart 
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sch- I'll nit a pick with your statement. "They are not sealed bearings". the axle/bearing system does have seals. Don't confuse your terms. A preassembled, radial (or angular for that mater like King uses) cartridge bearing that's preassembled by a supplying factory might or might not have seals, shields or be open. But so too a cup and cone , angular contact, threaded assembly bearing can and these days often has a true wiper seal. the design of the bearing is not dependent on presence of seals or not. This miss terminology of using "sealed" bearing to mean a design description is a common mistake. many/most of Shimano's (to use them as an example) are cup and cone, threaded assembly designs with (in their higher end products) a great seal. Andy.
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