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Well Service Pumps

Oil and gas producers have relied on Caterpillar since the industry's earliest days. For 60 years, we've powered the petroleum business on land. Now we go with it onto the ocean, hundred of miles out, thousands of feet down.

WS273 XD

When your job needs a stimulation pump, we’re ready. Our full line of well stimulation pumps are designed and manufactured by Caterpillar, in Caterpillar factories for single-source package confidence. WS273 XD well stimulation pumps are ideal for well stimulation applications using Cat 3512C (HD) engines and TH55 transmissions. Cat well stimulation pumps are backed by the worldwide network of Cat dealers ready to support your operation with technical support, service, parts, and warranty. Cat WS273 XD Well Stimulation Pump. Maximum power input: 2014 bkW (2700 bhp) @ 275 rpm.

Product Details

Pump Specifications

Maximum Input 2014 bkW
Maximum RPM 275 RPM
Number of Plungers 3
Stroke Length 254 mm
Pump Weight 8165 kg
Gear Ratio 5.55:1
  • Fluid Ends
    •  Valve-over-valve design simplifies valve, seat, and plungerinstallation
    •  Full line of 1502 discharge flanges – male, female, and blank
    •  Log-style suction manifold
    •  Grooveless valve stop,grooveless design eliminates stress risers present with agrooved valve stop design
    •  Plungers with advanced surface technology
    •  Premium plunger packing
    •  Polypak seals for more reliable sealing at suction cover anddischarge flanges
    •  Fluid end components designed to maximize interchangeabilityacross our fluid end line and with industry standard fluid ends
  • Stainless Steel Options
    •  All XD Geometric benefits
    •  Improved corrosion resistance, particularly in recycled water applications
    •  Improved resistance to stress corrosion cracking
    •  Optimized autofrettage parameters specifically for stainless steel material
  • All XD Geometric benefits
    • Improved corrosion resistance, particularly in recycled water applications
      • Improved resistance to stress corrosion cracking
        • Optimized autofrettage parameters specifically for stainless steel material
          • Power Ends
            •  Reverse helical pinion and bull gear design – great reliability
            •  Fully welded structure with additional internal supports
            •  Two-piece stay rod design – pretensioned stay rod lowerscyclic loading and fatigue stress
            •  Nose plate-to-frame design includes a dovetail interlockingdesign, which increases the structural strength
            •  Forged or fabricated bull gears – no cast material
            •  Forged crankshaft – one piece
          • Reverse helical pinion and bull gear design – great reliability
            • Fully welded structure with additional internal supports
              • Two-piece stay rod design – pretensioned stay rod lowerscyclic loading and fatigue stress
                • Nose plate-to-frame design includes a dovetail interlockingdesign, which increases the structural strength
                  • Forged or fabricated bull gears – no cast material
                    • Forged crankshaft – one piece
                      Built for it