Core components of the plunger pump-Product Center-Jingzhou Jinxiu Machinery Technology Co., Ltd._Plug valve

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As a key transmission component of the plunger pump power end, the connecting rod is responsible for precisely converting the rotational motion of the crankshaft into the reciprocating linear motion of the crosshead. Its performance directly determines the efficiency of power transmission, the smoothness of operation, and the overall service life of the pump unit. Our connecting rods are precision-forged from high-strength alloy steel and undergo strict heat treatment processes to ensure exceptional tensile strength, outstanding fatigue resistance, and excellent wear resistance. Precision machining guarantees the accuracy of bearing bores and the smoothness of contact surfaces, effectively reducing friction losses and vibration. Each connecting rod undergoes non-destructive testing to ensure reliable quality, helping the equipment operate safely and efficiently under harsh working conditions.

Standard-type Power End Crankshaft

As the core driving hub of the plunger pump power end, the crankshaft efficiently converts the rotational energy of the prime mover into the reciprocating power of the plungers. The stability of the crankshaft directly affects the output efficiency and long-term reliability of the pump unit. Our crankshafts are forged from high-strength alloy steel with continuous and intact internal fiber flow. Through gradient heat treatment, they achieve an ideal balance of toughness and hardness. The precision-ground crank pins and main journals are further strengthened with deep rolling processes to enhance fatigue life. Capable of smooth, low-noise operation under high-speed conditions, these crankshafts are ideal for demanding applications such as oilfield fracturing and ultra-high-pressure cleaning.

Standard-type Power End Crosshead

The crosshead is a critical motion-conversion component in the power end of a plunger pump. It efficiently transmits the rotary force from the crankshaft-connecting rod system and converts it into precise linear reciprocating motion to drive the plunger. Its stability directly affects sealing life and energy output efficiency. Our crossheads are integrally forged from alloy steel, offering exceptional durability. A double-wedge oil groove lubrication structure ensures the continuous formation of a high-pressure oil film, minimizing wear under extreme loads. The guide sleeve is embedded with self-lubricating bearings, working in tandem with precision-ground columns to eliminate lateral loading. This design is ideal for heavy-duty applications such as oilfield fracturing and ultra-high-pressure pumping.

Standard-type Power End Pony Rod

As a key force-transmission component in the power end of a plunger pump, the pony rod precisely delivers the reciprocating drive force between the crosshead and the plunger, ensuring zero power loss under high-frequency alternating loads. Its structural reliability directly impacts vibration control and sealing longevity of the pump unit. Our pony rods are forged from alloy steel to enhance tensile strength and fatigue resistance. The surface is coated with 715E-10 alloy to improve wear resistance and corrosion protection, ensuring deformation-free and failure-free performance during operation. Specifically designed for high-pressure plunger pumps and precision hydraulic intensification systems.

Valve Bodies and Seats

The valve body and valve seat form the high-pressure sealing core of the plunger pump’s fluid end. Operating at opening and closing frequencies of dozens of times per second, they precisely control the unidirectional flow of the medium. Their wear resistance directly determines pump efficiency and maintenance intervals. Our series of valve bodies and valve seats are specifically designed for high-pressure and acid-resistant applications, delivering exceptional sealing performance and durability under extreme conditions. Manufactured with advanced materials and processes, they offer excellent corrosion resistance and high strength, making them ideal for demanding scenarios such as fracturing pumps and high-pressure water injection pumps.

Fracturing Pump Plunger

The plunger is a key component of the fluid end in a fracturing pump. By reciprocating within the liner, it changes the chamber volume to achieve suction and pressurization. Its wear and erosion resistance directly affect operating efficiency and maintenance costs. Our plungers are made from high-quality alloy steel through multidirectional forging and refined heat treatment. Using thermal spray welding and remelting techniques, each product undergoes 100% penetration testing to ensure safety and reliability in high-pressure applications.

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