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The power end of the A-560-PT is the cornerstone of its superior performance and ultra-long life. Each component is carefully designed and manufactured to withstand the most demanding oilfield environments.

Frame construction: the core of the power end is a fully welded steel power frame. This structure provides unparalleled rigidity and strength, ensuring precise alignment and stable operation of the internal drive components at maximum load.

Drive system: precision machined herringbone gear drive ensures smooth power transmission, high efficiency and low noise. The crankshaft is supported by sturdy straight roller bearings, while the pinion shaft is supported by double-row spherical self-aligning roller bearings. This optimized bearing configuration ensures reliability under a wide range of loads.

Core components: the crankshaft is cast in high quality alloy steel. The connecting rod has a two-piece design for easy installation and maintenance in the frame. The crosshead is made of cast iron and operates in a replaceable, shim-adjustable guide plate, greatly extending service life and simplifying maintenance.

Lubrication system: the use of a comprehensive pressure cycle lubrication system to ensure that all moving parts can be sustained, adequate lubrication, effectively reduce wear and prolong the service life of the power end. For low speed operation below 50 RPM, it is recommended to equip with independent drive oil pump to ensure the best lubrication effect.

The A-560-PT's hydraulic end design prioritizes field maintainability, material strength, and compliance with industry standards.

Modular"L" design: the hydraulic end consists of three independent, fully interchangeable"L" shaped forging steel cylinder modules. This design is a major breakthrough in maintenance convenience. When a single cylinder fails, field personnel can quickly replace the module without removing the entire hydraulic end, significantly reducing downtime and maintenance costs7.

High quality material and manufacturing process: our hydraulic cylinder modules are made of high quality forged alloy steel (4130 or 4135) and subjected to a rigorous heat treatment process for superior strength and durability. All components meet API 7K quality standards to ensure excellent performance under pressures up to 7,500 PSI.

Convenient maintenance design: valves and seats can be quickly replaced by independent, threaded self-locking bonnets. The piston rod adopts two-piece thread connection design, and the cylinder liner does not need to be disassembled when the piston is replaced, which further improves the field maintenance efficiency.

A full range of high-quality accessories: Performance and life protection

We offer a full range of OEM quality accessories and wearing parts, all parts are made of the highest quality materials and advanced manufacturing process to ensure perfect compatibility with Oilwell A-560-PT mud pump, and can significantly extend the overall pump life.

Cylinder liner: provides a variety of options to adapt to different working conditions.

High chromium (bimetal) cylinder liner: using forged steel shell and high chromium cast iron inner liner, bore hardness up to HRC 62-69, has excellent wear resistance, is the ideal choice for standard working conditions.

Ceramic cylinder liner: with extremely high hardness and ultra-smooth inner wall, can minimize friction, significantly extend the service life of the piston.

Piston: the piston core is made of high strength forged alloy steel. We offer a variety of piston types, including integrally vulcanized bonded nitrile rubber (NBR) pistons and polyurethane pistons to accommodate different mud types and working pressures.

Valve Assembly: the body and seat are made of forged alloy steel and are carburized and hardened for durability and corrosion resistance. Available in a variety of designs including four-ribbed and full-open valves, the rubber cover is available in polyurethane and nitrile rubber to meet varying flow and pressure requirements.

Piston rod and other parts: we provide all relevant parts including piston rod, intermediate rod, clamp, seals and gaskets to ensure the tightness and reliability of the whole system.

Performance Metrics: data-driven Excellence

The performance parameters of Oilwell A-560-PT are rigorously tested and verified, providing you with accurate and reliable basis for planning drilling operations.

Table 1: key technical specifications of Oilwell A-560-PT


	Horizontal triplex single-acting piston pump
	560hp (418KW)1
	175SPM
	8 inches (203.2 mm)
	4.586:1
	4-7 inches (101.6-177.8 mm)
	4,000 PSI
	7500 PSI (51.7 MPa)1
	5-inch API 5,000 PSI flange
	12,900 pounds

Table 2: Table of performance parameters of Oilwell A-560-PT

Dimensions of cylinder liners (in.)
		50	75	100	125	150
4	3,780	66	98	131	164	196
41⁄2	2,990	82	124	165	206	247
5	2,420	102	153	204	255	306
51⁄2	2,000	123	185	247	308	370
6	1,680	147	221	294	368	442
61⁄2	1,430	173	259	345	432	518
7	1,240	200	300	400	500	600
Source:. Displacement is calculated based on 90% mechanical efficiency and 100% volumetric efficiency.

6.0 conclusion: your trusted partner

The choice of the Oilwell A-560-PT triplex mud pump means you have chosen a powerful combination of durability, high performance and easy maintenance. Its rugged power end design, highly efficient modular fluid end and API 7k-compliant high-quality accessories work together to ensure unrivalled value and reliability in the most demanding drilling conditions.

We are committed to providing our customers with the best quality products and all-round support. Please contact our sales team immediately for detailed information and quotations on Oilwell A-560-PT and its full range of accessories. Let us be your reliable partner in improving your drilling efficiency.

OILWELL-560PT