Outer Sleeve

 

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  1. The outer-sleeve can be rigid or flexible.


Rigid

•  With a rigid outer-sleeve/outer-casing installed,

    the rollers are held in parallel even under the most extreme torsional loads.

    If a rigid-sleeve is to function as a driven part,

    then springy outer-bands are used to make proper contact

    with the inner surface of the sleeve.

    If a rigid-sleeve is not driven, then outer-bands are NOT needed.

Flexible

•  A flexible outer-sleeve can be used in situations

    such as when using a ScrollerWheel as a track-wheel to protect the inner-bands.

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