EMAX 25HP 98CFM 2 Stage Pump Pressure Lubricated Reciprocating Bare Pump w/flywheel

EMAX Compressors

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EMAX 10HP 2 Stage Reciprocating Pressure Lubricated Bare Pump w/ flywheel

This is our Pressure Lubricated 25 HP, 4 Cylinder, 2-Stage, air compressor pump with 98 CFM Displacement, 89 CFM @ 175 PSI, and 93 CFM @ 100 PSI. This unit has an SCFM @ 175 of 89. This is usable air or “free air” at pressure – 175 PSI. 25 hp air compressors pump can go to 200 PSI, but what we tell all of our customers is even though the compressor will go to a higher pressure, you should run it at the lowest pressure possible to maintain the air pressure needed. This will give you a higher CFM at a lower pressure and the compressor will run cooler with less compressor wear. This is true with any compressor on the market. Lower pressure combined with lower RPM will give you great results and a compressor that will last for many years. We have this style compressor, 4 Cylinder, in factories, body shops, and many tough applications that we sold over 20 years ago. This pump runs COUNTER CLOCKWISE rotation as you are looking at the compressor fan or flywheel. This pump runs at a SUPER slow RPM of 800. It can be slowed down to 600 RPMs and run with a TRUE 20 HP motor. Minimum RPM on this pump is 550..

This pump is ALL CAST IRON, (not aluminum). It has solid cast iron cylinder, cylinder heads, crankcase, flywheel, crank, and forged steel connecting rods – not aluminum! These rods also have a replaceable bearing on the crank journal and on the wrist pin journal.

Our 25 hp air compressor pump has large Timken-Style roller bearing on the crank ends on each end of the crankshaft. This ensures good crank stability and long compressor bearing life. Each cylinder is all cast iron with no sleeves or aluminum. All cast iron prevents cylinder distortion and egg-shaped cylinders when pump gets hot. This pump has 2 B-Section belt drive. Twin belt ensures better belt gripage and longer belt life. This pump has head unloaders. This is very nice for continuous run applications such as gasoline driven or electric driven high duty cycle applications. Head unloaders are an air cylinder in each head. When air is applied to them, they open or push the intake valves open allowing the pump to go into a free wheel mode. The cylinders are still moving in a free wheel mode, but it cannot compress the air because the intake valve is held open. This pulls cool air into the cylinder. The cool air absorbs the heat in the pump and blows it back out the intake valve. This is nice when you are sandblasting, etc., under heavy duty cycles. This pump has a site glass to view your oil level.


  • Solid cast iron 2-stage 4 Cylinder V-4 design piston series pump, oil lubricated design to extend pump life, rated at up to 70,000 hours (based on B-10 bearing life rating)
  • Ram-Tek – solid steel, heavy gauge rods, designed for maximum performance and durability
  • Cool-Tek – the coolest running compressors in the industry, air stream technology provides 35% lower operating temperature, reduces moisture build up and extends pump life
  • Flow-Tek – concentric disc valves, deliver maximum air flow and reliability with low replacement costs, easily accessible design provides easy maintenance and durability
  • Industrial grade ball bearing for maximum performance and extended pump life
  • Built-in head unloaders designed for continuous run applications
  • Bolt pattern: 12.5 D x 13” w
  • flywheel included on pump
  • Solid cast-iron cylinders, crankcase, flywheel, crankshaft, and valve plates
  • Large Steel Automotive-Type Filters – not plastic
  • Large site glass for viewing your oil level
  • dimensions of 25 HP air compressors pump are: 34” W x 31.5” D x 25” H
  • weight: 800Lbs.
  • includes oil – holds 4 quarts of oil
  • 82 DBA


 CFM @ 100 PSI  93
 Compressor Stage  Two
 Horse Power  25
 Pump Material  Solid Cast Iron
 Pump Model  APP4V2598T
 Dimensions LxWxH  34" X 31.5" X 25"
 Product Weight  800
 Bolt Pattern  12.5" x 13"
 Oil Capacity  4 Quarts


EMAX Air Dryers Instructions Manual

EMAX Piston Manual

Air Compressor Pumps Operating Instruction

EC10 – TB100 BD




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