Rapid-Air AIR FEED / CUT-TO-LENGTH WITH KEYPAD - Manual (Page 7)

6
LUBRICATION
For a general guide for the Rapid Master, the lubricator oil release adjustment should
be set to one drop of oil for each 50-80 strokes. (See insert on lubrication of “O” rings.)
LUBRICATION OF “O” RINGS
The “O” Rings furnished with Rapid-Air feeds are made of a Buna N Compound
designed to give long life on service with air, oil and water. This rubber compound
features high abrasiion resistance and good dimensional stability if the
recommendations listed below are followed.
A filter and lubricator should be used; the filter to remove grit that would otherwise act
as an abrasive, and the lubricator to provide an adequate quantity of oil. For best
results, avoid excess of oil.
Parafifin base oils in general will give the best service. The viscosity should be 140-
170 S.S.U., the API gravity 29.5 minimum and the aniline point between 150 F and
210F. Variation of the aniline point from the limits given is likely to cause either
shrinkage or stretching of the “O” Rings.
Detergent motor oils and all other oils designed for automotive use are generally
unreliable in chemical makeup for use with rubber compounds. Spindle oils are
too low in viscosity.
The group of oils listed below are generally recommended for Buna N compound 366Y
“O” Rings. This grouping is given in good faith but, because of the constant changes
made in oils by the manufacturers, we cannot guarantee any consistency of chemical
makeup. All of these oils have an aniline point of 210, and API gravity of 29.5 minimum
and a viscosity of 140-170 S.S.U. The base stock is paraffin.
Recommended:
Cities Service Oil Co. Pacemaker #1 (Standard hydraulic oil)
Standard Oil of Indiana #5 Hydraulic Oil
Sun Oil Co. Sunvix #916
Texaco Regal A, R & O
Shell Oil Co. Tellus #27
Turbo #27
Sinclair Oil Co Rubilene Extra Light
Atlanta Refining Co. Hytherm Oil #C
New Jersey Lubricant Co A-88/HNR
Standard Oil of Ohio Sohivis #43
Mobil DTE 10W Hydraulic