Power end

All-in-one power frame: superior stability of the casting process

Wheatley fig. The 1036's power rack is made of high-strength, fine-grained, monolithic cast iron. This one-piece casting process gives the frame exceptional rigidity and dimensional stability, providing a solid foundation for the precise alignment of internal moving parts, ensuring long-term operation under high load without deformation.

Crankshaft and gear assembly: forging strength, smooth transmission

Crankshaft design and materials

The crankshaft is made of high strength ductile iron and incorporates Whitley's unique offset design. Through the offset layout, the vertical thrust load is reduced by more than 40% , which greatly reduces the wear of the crosshead and guide plate, and fundamentally eliminates the destructive vibration to ensure the smooth operation.

Herringbone gear

Power transmission is achieved by the precision-machined Sykes continuous herringbone gear set. The main gear is made of high-grade ductile iron, while the pinion is precision-machined from forged alloy steel.

Bearing and lubrication system: designed for durability

Bearing arrangement

Crank end connecting rod bearings: Babbitt alloy lined steel housing bearings, adjustable for wear by removal of shims. This design not only facilitates field maintenance, but also significantly reduces the replacement costs associated with non-adjustable roller bearings.

Crosshead end connecting rod bearings: wear-resistant bronze bushing, after replacement can be reaming treatment to achieve the perfect fit clearance.

Crankshaft main bearings: tapered roller bearings with high load capacity are designed to allow easy adjustment from the outside of the pump.

Lubrication system

Fig. The 1036 features a simple and efficient splash lubrication system, with all moving parts at the power end lubricated by oil in the crankcase oil sump.

Hydraulic end: carefully designed to withstand abrasive environments

Hydraulic end cylinder block: solid pressure vessel

High strength alloy materials (molybdenum alloy cast iron, cast steel, and ductile iron can be supplied upon request) are used for integral casting of the hydraulic end cylinder block. The integral casting structure eliminates the weld seam, avoids the risk that the weld seam may become the stress concentration point and the potential failure source under high pressure cyclic loading, and ensures the integrity and pressure resistance of the cylinder block.

Cylinder liners, pistons, and piston rods: a system of wear-resistant components

Cylinder Liner: Standard Specification for molybdenum alloy cast iron or hardened steel cylinder liner with excellent wear resistance in conventional mud conditions. For corrosive environments such as brine, we also offer special corrosion resistant material cylinder liners.

Pistons: many types of pistons are available for different applications. Ferromolybdenum or bronze piston bodies with cast iron or nylon rings can be used under operating conditions such as crude oil transportation, mission pistons with replaceable nitrile rubber or polyurethane rubber are recommended.

Piston rod: the piston rod is made of a variety of premium materials including hardened steel, chrome plated steel and stainless steel to withstand both high mechanical stress and chemical corrosion.

Valves and seats: sealing and quality assurance

Valve Assembly is the key to ensure pump efficiency. We offer a wide range of valve and seat combinations to suit different fluid media:

Design and material: standard specification for hardened and ground steel wing valves and seats for normal service and crude oil operations. Valves and seats are available in bronze or 316 stainless steel for brine or chemical fluids to ensure excellent corrosion resistance. For slurry containing solid particles, wear-resistant high flow design valves are recommended.

Precision manufacturing process: all valves and seats are precision machined to ensure accurate seat support, this is the core process to prevent premature wear of valves under high-speed impact, protect seal integrity and extend service life.

Performance parameters: promise of reliable data

Wheatley fig. 1036 performance parameters through rigorous testing, designed for your engineering design to provide accurate and reliable basis. With the following table, you can accurately match the flow and pressure required for your operation according to the specific cylinder liner size and pump speed.

1: Wheatley Fig. 1036 performance data

Piston diameter in inches	Maximum pressure (PSI)	Displacement per revolution (BPD)	Displacement per revolution (GPM)	50 RPM (BPD)	50rpm (GPS)	75 RPM (BPD)	75rpm (GPM)	100rpm (BPD)	100RPM (GPS)
4.000	466	45.696	1.3328	2285	67	3427	100	4570	133
3.750	530	40.162	1.1714	2008	59	3012	88	4016	117
3.500	608	34.986	1.0204	1749	51	2624	77	3499	102
3.250	705	30.166	0.8799	1508	44	2263	66	3017	88
3.000	828	25.704	0.7497	1285	37	1928	56	2570	75
2.750	985	21.598	0.6300	1080	31	1620	47	2160	63
2.500	1192	17.850	0.5206	892	26	1339	39	1785	52
2.250	1471	14.458	0.4217	723	21	1084	32	1446	42
2.000	1862	11.424	0.3332	571	17	857	25	1142	33

Sources of data:

2: Wheatley Fig. 1036 key technical specifications

Parameters	Specifications
Type	Double cylinder piston pump
Maximum brake horsepower	28.6 HP
Stroke length	61⁄8 inches
Maximum work pressure	1,862 PSI
Piston rod load	5,850 lbs