gear case

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Related to Chainguard: Chain case

gear case

[′gir ‚kās]
(mechanical engineering)
An enclosure, usually filled with lubricating fluid, in which gears operate.
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References in periodicals archive ?
The new, high performance Chainguard 280 has been specifically formulated to overcome problems widely encountered with high temperature chains, particularly in the bakery industry.
What you get Girl's bike with 12ins wheels and stabilisers; single speed; full chainguard.
frame, training wheels, built-in chainguards and kid-friendly