Which type of lubricator is used in larger machinery and uses an oil pump to inject lubricant through ducts drilled into rotating members and casings?
a. Ring oilers
b. Wick feed
c. Forced feed
d. Drip feed
a. Incorrect. Ring oilers are metal rings that fit and rotate around a shaft.
b. Incorrect. A wick feed oiler is similar to a drip feed oiler. However, instead of dripping the oil, wick feed oilers supply lubricant to bearings through the capillary action of a fibrous material.
c. Correct. A forced feed is found in larger machinery and uses an oil pump to force lubricant through ducts drilled into the rotating members and casing.
d. Incorrect. A drip feed delivers lubricant through a drip that flows down onto bearing surfaces.
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