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This National 300Q-5 Quintuplex Pump Cat 3406C TA Engine Package is in great working condition.  A reliable National Pump and a field proven Cat Diesel Engine all housed in one building are ready for your application at a significant cost saving.  The pump package can be viewed at our Edmonton yard.  Please call 1-855-5CALROC (225762) or use our contacts page if you have any questions.

National 300Q-5 Quintuplex Plunger Pump

A 300 horsepower 5” stroke horizontal quintuplex single acting plunger pump. Available in two fluid end materials at pump speeds up to 400 RPM and multiple accessory gear reduction unit ratios.

  • National Oilwell
  • 300 horsepower 5″ stroke horizontal quintuplex single acting plunger pump
  • Available in two fluid end materials
  • Pump speeds up to 400 RPM
  • Multiple accessory gear reduction unit ratios

Power End Features:

  • Ductile Iron Power Frame
  • Flooded sump, splash distribution lubrication
  • Alloy steel crankshaft with ground journals and polished throws
  • Cast iron crossheads with upper/lower oil grooves
  • Heavy-duty, tapered roller crankshaft bearings
  • Precision type, aluminum alloy crankpin bearings
  • Ductile Iron connecting rods
  • Bronze bearing crosshead pin bushings
  • Rated rod load is 10700 lbs.

Fluid End Features:

  • Plungers-Solid Ceramic or Tungsten Carbide coated
  • General Service, Lip Type or Aramid Fiber Plunger Packing
  • 17-4 Stainless Steel  or Nickel Aluminum  Bronze Steel Stuffing Boxes (includes nuts)
  • Spherical suction and discharge valves
  • Valve Seat & Valve Body: Nitronic 50
  • Spring: Inconel
  • Cage:316L Stainless Steel
  • Severe duty valves with inserts available

CAT 3406C TA Diesel Engine

Oilfield Mechanical Rig Power

The outstanding performance of Caterpillar® engines is the result of fifty years experience in diesel power, plus a multi-million dollar research and development program. For the user this means continual improvement and refinement in engine performance.
The diesel engines and attachments described here are offered by Caterpillar for use as prime power on mechanical drilling rigs.
The typical package contains the attachments normally specified on engines powering mechanical rigs. These Cat® engines, when equipped with the user’s choice of torque converter or clutch, result in a unit that specifically meets the application requirements of the drilling contractor.

  • High efficiency, four-stroke-cycle engine designed for thousands of trouble-free hours of operation
  • Field-proven in thousands of applications

All equipment is skidded and housed inside a 12’W x 40’L x 11′ H Gable roof style steel industrial building (total unit weight 50,000 lbs)



Manufacturer:  National Oilwell

Model:  300Q-5 “H” Model

Pump size:
 4 x 5 (102 x 127)
maximum plunger size x stroke length, in.(mm)

Rated:  bhp at 400 rpm (kw): 300 (224)

Rated plunger load:
10,700 (4853.5)
pounds (Kg)

Maximum discharge pressure:
“L” model: 1650 (11,375)
“M” model: 3000 (20,682)
“H” model: 5000 (34,470)
psi (kPa)

Crankshaft extension:  in.(mm)
Diameter: 4.875 (123.8)
Length long side: 11 11/16 (297)
Length short side: 5 5/8 (143)
Keyway (width x depth):

Maximum recommended sheave:  58 (1473)
Minimum recommended sheave: 36 (914)

Accessory gear reduction unit:
2.27:1, 2.89:1, 3.25:1, 3.36:1, 3.69:1,
4.38:1, 4.84:1, 5.63:1

Oil capacity:  gallons (L)
Crankcase: 12 (45.5)
Gear Reducer-varies with ratio:  3.5 to 6.5 (13.2 to 24.6)

Pump only on wood shipping skids:  pounds (Kg): 4000 (1814)
“L”: 7000 (3175)
“M”: 6750 (3062)
“H”: 6840 (3103)

Gear reducer, approximate pounds (Kg):  1100 (499)



Bore: 5.4 in. (137 mm)

Stroke:  6.5 in. (165 mm)

Displacement:  893 cu. in. (14.6 L)

Weight:  2990 lb. (1356 kg)

Low idle:  600 rpm

Need more information?  Ready to place an order?
Please call 1-855-5CALROC, use our contact page or talk to one of our sales experts directly:

Dan Echino
Cell: 403-613-7134

Larry Holman
Cell: 403-852-0966