GARDNER DENVER FY-FXX Pump

Performance ratings

The actual output performance (flow and pressure) of the mud pump is determined by the selected size of the cylinder liner. The following table details the performance parameters of different cylinder sizes under mud conditions, providing accurate data support for your operation design. The performance data is calculated based on 90% mechanical efficiency and 100% volumetric efficiency.

Table 2: Fy-fxx mud performance rating (pump speed 70SPM/pinion shaft speed 330rpm)

One-piece cast frame: the core of stability

The power end frame of the FY-FXX is constructed of solid, one-piece alloy cast iron.

Driveline: smooth and efficient transmission of power

The smoothness of power transmission is directly related to the life and efficiency of the pump. The FY-FXX employs an advanced"Continuous-tooth herringbone gear" design. Herringbone gears offer two core advantages over conventional spur or helical gears:

Smooth meshing: herringbone gear at any time have a number of teeth meshing at the same time, to ensure the continuous and smooth transmission of power, greatly reducing the noise and impact load.

Eliminate axial thrust: its unique v-shaped tooth design, left-handed and right-handed helical teeth generated by the axial thrust offset each other. This completely eliminates the reliance on thrust bearings and reduces the extra load on bearings and racks, and is one of the key designs for extended driveline life.

Core transmission components: born to withstand the ultimate load

Crankshaft: as the heart of the power end, the crankshaft is forged in one piece from the finest alloy steel (35CrMo or 40CrMnMo) , not cast. The forging process makes the internal grain flow lines of the metal distribute along the contour of the part, which greatly enhances its strength and fatigue resistance. After forging, the crankshaft also needs to undergo strict heat treatment process to obtain the best mechanical properties and impact resistance.

Connecting rod and crosshead: the connecting rod is made of high strength ductile iron, while the crosshead is made of reinforced solid alloy iron to ensure no deformation or fracture under heavy piston rod loads. The large and small ends of the connecting rod are equipped with high-lead bronze bushings and bronze bushings, respectively. These self-lubricating materials provide superior wear resistance under heavy loads.

Bearing and lubrication system: the Lifeline to ensure long-term operation

Bearing system: main bearings are heavy duty tapered roller bearings and pinion shafts are supported by roller bearings. This configuration effectively withstands large radial and axial loads, ensuring accurate gear alignment under all operating conditions and avoiding abnormal wear.

Full immersion lubrication: The Power End uses an efficient full immersion lubrication system. All internal moving parts, including gears, bearings, and crossheads, are fully immersed in the large capacity oil grooves in the crankcase.

Hydraulic cylinder (module) : robust and easy to maintain design

The FY-FXX features a split, Box-type hydraulic end, available in cast iron or steel. This design allows individual servicing of each valve, eliminating the need to disassemble the entire cylinder and greatly simplifying maintenance. When the hydraulic cylinder module needs to be replaced, the split structure is more convenient and faster than the integrated design, thus minimizing the precious downtime.

Cylinder liner: the first line of defense against wear and tear

Bimetallic construction: the casing of the cylinder liner is made of high strength forged steel (AISI 1045) , providing strong structural support and compression resistance. The lining is made of centrifugally cast high chromium cast iron alloy, which usually contains more than 27% chromium.

Excellent hardness and life: centrifugal casting process to ensure that the high-chromium alloy lining of the dense structure, defect-free. After precise heat treatment, the hardness of the lining can reach Rockwell hardness HRC 60-69. The high chromium content forms extremely hard chromium carbide particles in the metal matrix, which give the cylinder liner extraordinary abrasive wear resistance and corrosion resistance. Under typical mud conditions, the service life of this high chromium cylinder liner can reach 800 to 1000 hours, which is several times that of ordinary cylinder liners.

Piston and piston rod: power for driving high pressure

Pistons: our standard pistons have a steel body with a high-performance NBR seal, designed for mud conditions. We are well aware that different types of drilling fluids have different effects on rubber materials, so we offer a variety of rubber formulations (such as nitrile rubber and polyurethane) for customers to choose from, in order to achieve the best sealing effect and service life in water-based mud or oil-based mud.

Piston rod: the piston rod is made of high quality CR-MO alloy steel, 42CrMo, which is widely used in high stress components due to its excellent strength, toughness and hardenability. The manufacturing process is extremely demanding: a dense internal structure is formed by forging, followed by quenching and tempering heat treatment to obtain the desired combination of mechanical properties. Finally, the surface of the rod is usually treated with hard chromium plating to form a hard, smooth and corrosion-resistant protective layer that effectively resists the wear of the filler box and the corrosion of the drilling fluid, to ensure that the piston rod does not undergo fatigue fracture during millions of high-intensity reciprocating motions.

Valve Assembly (body and seat) : the heartbeat of the pump

High quality alloy steel forgings: body and seat are forged in one piece from high quality alloy steel (AISI 4119 or AISI 8620) .

Deep carburizing: this is the core process for manufacturing high performance valve assemblies. At high temperatures, carbon atoms are diffused to the surface of the part to form a carbon-rich layer, which is then quenched. This process resulted in a unique double-layer structure: a very hard wear-resistant layer with a depth of up to 2.5 mm and a hardness of up to HRC ≥60 was formed on the surface, while the core part maintained low hardness and excellent toughness.

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