WS255 Quintuplex Well Stimulation Pump

WS255 Quintuplex Well Stimulation Pump

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. WS255 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 WS255 Well Stimulation Pump. Maximum power input: 1864 bkW (2500 bhp) @ 330 rpm.

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Pump Specifications

Maximum Input
Maximum RPM
Number of Plungers
Stroke Length
Pump Weight
Gear Ratio

Standard Equipment

  • Fluid Ends
    • Dimensionally compatible with industry standard 8" and 10" stroke power ends
    • Valve-over-valve design simplifies valve, seat, and plunger installation
    • Full line of 1502 discharge flanges - male, female, and blank
    • Suction manifold options - Zoomie and log-style, and our innovative low-profile option
    • Grooved and grooveless valve stop designs available, grooveless design eliminates stress risers present with a grooved valve stop design
    • Plunger line - colmonoy 6 coating with a minimum hardness of 56 RC
    • Standard and premium plunger packing available
    • Polypak seals for more reliable sealing at suction cover and discharge flanges
    • Fluid end components designed to maximize interchangeability across our fluid end line and with industry standard fluid ends
  • Power Ends
    • Industry standard footprint - fully interchangeable with competitors’ pumps
    • Reverse helical pinion and bull gear design - great reliability
    • Fully welded structure with additional internal supports
    • Two-piece stay rod design - pretensioned stay rod lowers cyclic loading and fatigue stress
    • Nose plate-to-frame design includes a dovetail interlocking design, which increases the structural strength
    • Forged or fabricated bull gears - no cast material
    • Forged crankshaft - one piece