NA and NAS Oilers

NA and NAS Oilers – Wick Feed Oilers

NA and NAS Vari-Feed Wick Oilers are used to provide a controlled amount of oil to a bearing or other machinery part. The principle of delivery combines gravity feed with capillary action in the wick to provide a constant feed rate of oil regardless of the fill level in the reservoir. Feed rate is determined by the viscosity of the oil and the type of wick being used.

The NA and NAS Vari-Feed Wick Oilers have a filler cap with gasket that stops oil delivery when fully closed. By turning the fill cap slightly, the threaded air vent is opened allowing oil to flow.


  • Feed rate is constant and adjustable only by changing to a different wick
  • 5 wick speeds are available and color coded for easy replacement or installation
  • A multi-pack of different wick speeds is included with each oiler
  • Sealed cap and operate only when caps is in vent position
  • Plastic reservoirs have reinforcing ribs for long life
  • Oil sight available on NAS models for visual indication of oil flow
  • Copper brazing of all steel connections provides long life and leak proof design
  • Zinc plating resists corrosion

Do you have a suggestion to improve this product? If so, you can submit your idea here. For special quote requests, please use our quote request form or contact our customer service team at 262.691.9336.


Instruction Sheets


Model No.DescriptionStyleCapacityConnection (NPT)A Dimensions (in)B Dimensions (in)
30942Wick OilerType NA4 oz1/42-5/163-1/4
31042Wick OilerType NAS4 oz1/42-5/163-1/4
31082Wick OilerType NAS8 oz1/42-5/84-5/16
Max. Operating Temp. 165ºF Continuous
Reservoir Butyrate Plastic
Oil Sight Acrylic
Sight Gaskets Buna-N
Wicking Wire Cored Cotton
Material Steel and Brass
Finish Bright Zinc Plated


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