Medium Pressure Pumps

Medium-pressure oil pump applications
Medium-pressure oil pump accessories

3:1—5:1 • Motor Oil, ATF, gear lube and other fluid lubricants

The 3:1 and 5:1 Stub pump family from Lincoln

For over 75 years, Lincoln's exclusive pump designs have proven their superiority in application after application. And our lineup of strong, silent oil-dispensing pumps is no exception.

Both our stub pumps are built with the same rugged reliability and powerful performance you've come to expect from Lincoln. They are super quiet—the quietest pumps on the market. They deliver increased output for faster product delivery. And they let you handle a wider range of applications with total mounting flexibility.

Lincoln has taken the time proven pump design of the Lincoln 84933 5:1 pressure ratio balanced double-acting oil stub pump and created a more compact air motor to produce a 3:1 pressure ratio balanced double-acting oil stub pump, model 282396. This pump creates a versatile, economical, reliable and smooth delivering lower pressure version of the Lincoln 5:1 ratio pump.

Since the 282396 balanced double-acting 3:1 pressure ratio oil stub pump and the 84933 balanced double-acting 5:1 pressure ratio oil stub pump share all dimensions other than air motor cylinder diameter, these pumps are now directly interchangeable without piping changes.

The Lincoln oil pump design enables all pump users to choose 3:1 ratio or 5:1 ratio pump models to suit their specific application.

Series 25 pumps

This 2" diameter, 25 cubic inch displacement stub pump family is based on our 3:1 ratio 282396 bare stub pump.Delivers a uniform six gallons of product per minute free delivery. Ideal for dispensing fluids from drums, tanks or remote standpipe mount.

Model 282398
Delivers a uniform six gallons of product per minute free delivery. Ideal for dispensing fluids from drums, tanks or remote standpipe mount.
3:1 pressure ratio stub pump assembly comes complete with:

  • Bare stub pump model 282396
  • Pump cover kit model 84935
  • Oil connecting hose model 73024
  • Air connecting hose model 72024
  • 90° volume union elbow model 241584
  • Air coupler model 815
  • Air nipple model 11659
  • Bung bushing model 84538

282133

Bare Drum Pump
282396
6 gal 3:1 55-gal. 1/4 1/2 replacement
282396 Bare Stub Pump 282396 6 gal 3:1 stub/ universal 1/4 1/2 universal
2424 Stationary 282133 6 gal 3:1 55-gal. 1/4 1/2 shop
2437 Stationary 282686 6 gal 3:1 16-gal. 1/4 1/2 shop
282398 Stub Pump Assembly 282396 6 gal 3:1 stub/ universal 1/4 1/2 universal
284168 Stationary tank 282396 6 gal 3:1 270-/ 275-gal 1/4 1/2 shop
284231 Lube truck 282133 6 gal 3:1 16-gal. 1/4 1/2 lube truck
 
     

Series 40 pumps

This industry proven 21/2" diameter, 40 cubic inch displacement stub pump family is based on the Lincoln 5:1 ratio 84933 bare stub pump.

Model 84934
Delivers a uniform six gallons of product per minute free delivery.
5:1 pressure ratio stub pump assembly comes complete with:

  • Bare stub pump model 282396
  • Pump cover kit model 84935
  • Oil connecting hose model 73024
  • Air connecting hose model 72024
  • 90° volume union elbow model 241584
  • Air coupler model 815
  • Air nipple model 11659
  • Bung bushing model 84538
 

84933

Bare Stub Pump
84933
6 gal 5:1 stub/ universal 1/4 1/2 universal
285133 Bare Drum Pump & Tube 84933 6 gal 5:1 55-gal. 1/4 1/2 replacement
2524 Stationary 55 gal. 285133 6 gal 5:1 55-gal. 1/4 1/2 shop
2537 Stationary 16 gal. 285686 6 gal 5:1 16-gal. 1/4 1/2 shop
84934 Stub Pump Assembly 84933 6 gal 5:1 stub/ universal 1/4 1/2 universal
285168 Stationary
tank
84933 6 gal 5:1 250-/ 275-gal 1/4 1/2 shop
285231 Lube truck 285133 6 gal 5:1 55-gal. 1/4 1/2 lube truck
 
     

3:1 Ratio • Corrosive fluids

Series 20 pumps/ 3:1 press. ratio

Model 84145-9 stainless steel
For pumping synthetic hydraulic oil, antifreeze or corrosive products. Pump may be coupled to stand pipe, mounted with bracket and suction kit or pump tube extension may be added for bung mounting to bulk tank, 2.5-galon a minute free delivery. Pump tube constructed of 316 stainless steel and features Teflon® packings, air inlet 1/4" NPT(f), material outlet 1/2" NPT(f) comes with air coupler and plug and 84147-9 product check assembly.

Model 84080-9 stainless steel

Recommended for use with antifreeze, solvents and windshield washer solution. 316 Series stainless steel construction and Teflon® packings assures long life. 3:1 ratio pump for transfer of corrosive or toxic fluids. Mounts on 55-galon bung opening drums. Delivers 2.5 gpm. Lasts longer than carbon steel models in corrosive service. Maximum air pressure 125 psi.