Выражение встречается в следующем контексте:

Pad and waste type devices may be used for traction motor bearings, sleeve bearings etc. These devices shall preferably not be used in very dirty environments. Wick feed oiler, waste feed oiler, under feed pad oiler, saturated pad oiler etc. may be considered under this category из devices

Не получается перевести under feed pad oiler и saturated pad oiler

Заранее спасибо