Great n Ga-550

Table: General specification of GA-550 triplex mud pump

Parameters	Values (in imperial system)	Numerical Value (metric)
Type of pump	Triplex, Single-Acting Piston	Triplex, single-acting piston pump
Rated input power	550 HP	410kw
Rated pump speed	145-150SPM	145-150SPM
Stroke length	7.00 in	177.8 mm
Maximum work stress	5,000 PSI	34.5 MPa
Maximum cylinder liner size	7.00 in	177.8 mm
Maximum displacement	577 GPM	2,184 LPM
Gear ratio	4.625:1to	4.625:1to 5.05:1
Suction line flanges	8"ANSI 150 #	DN200
Discharge line flange	4"Or 5" API 5000 #	DN100 or DN125
Pump body weight (bare pump)	13,800-18,000 lbs	6,260-8,165 kg
Dimensions (length x width x height)	120"X 57.06" x 48.93	3048X 1450x 1243mm
Crankcase oil	55gallons	208liters

Power End: the cornerstone of reliability

Frame construction: the power end of the Ga-550 is constructed of high-strength welded steel plates.

Crankshaft and gear train:

Crankshaft: one-piece forged alloy steel crankshaft with dynamic balancing. Common material grades
42CRMO or modified ANSI 4340 alloy steel is selected for its excellent comprehensive mechanical properties, and the best matching of strength and toughness is achieved by subsequent quenching and tempering heat treatment.

Gear: pump with double helical teeth (herringbone teeth) gear for power transmission. Compared with ordinary spur gears, herringbone gears can ensure smooth and quiet operation during transmission, transmit higher torque through larger tooth surface contact area, and can self-balance axial force.

Bearings and lubrication system: the power end is fully equipped with anti-friction roller bearings (including main bearings, pinion shaft bearings and connecting rod big end bearings) from top manufacturers, to minimize friction losses and improve transmission efficiency. A set of
A combination of forced and splash lubrication systems are usually equipped with separate gear pumps, filters, pressure gauges and oil coolers (optional) to provide consistent, reliable lubrication protection for all critical moving parts.

Hydraulic end: the core area of high wear and high performance

Modular design concept: the GA-550 features a modern modular hydraulic end design with a two-disc"L" or Valve-over-Valve design.

Material and manufacturing process: hydraulic end modules are made of high strength forged alloy steel, common grades include 35CRMO, 40CrMnMo and AISI 4130/4135. The entire forging, heat treatment and non-destructive testing (NDT) process is strictly followed
API 7K standard ensures that the material has sufficient strength and toughness to withstand pulse pressure cycles up to 5,000 PSI.

Valve assembly components:

Valve Assembly and seat: as the heart of the hydraulic end, the seat is usually made of a forged alloy steel suitable for surface hardening, such as AISI 8620 or 20CrNiMo.

Valve rubber (plug-in) : as the actual sealing element, the valve rubber is made of a highly abrasion-resistant elastomer, such as Polyurethane (PU) or nitrile rubber (NBR) , which is responsible for providing a reliable seal and absorbing impact energy.

Table: Great n Ga-550 Performance Matrix (power rating: 550HP, stroke: 7") ."

This table provides a quick reference tool for drilling engineers and drillers to select the most appropriate combination of liner size and pump speed to meet hydraulic parameter requirements for a particular downhole operation.

Cylinder liner inner diameter (in.)	Maximum discharge pressure (PSI)	Displacement per revolution (gallons)	Displacement per 145spm (GPM)	Displacement at 120SPM (GPM)	Displacement at 100SPM (GPM)
7	1,673	3.50	507	420	350
6-1/2	1,940	3.02	437	362	302
6	2,277	2.57	373	308	257
5-1/2	2,710	2.16	313	259	216
5	3,279	1.78	259	214	178
4-1/2	4,048	1.45	210	174	145
4	5,000	1.14	166	137	114

Source: displacement based on 100% volumetric efficiency.

Table: material and process specifications for Ga-550 wear parts and key components

Components	Standard materials	Manufacturing and processing	Core performance advantages
Liners	High chromium bimetal (case: forged steel; inner case: centrifugally cast high chromium iron) ; zirconia ceramics	Precision honing of bore, interference fit between housing and inner sleeve. The hardness HRC of bimetal inner sleeve is more than 62.	Excellent wear resistance and corrosion resistance, long service life. Longer service life of ceramic cylinder liner.
Pistons	Piston core: forged alloy steel (e. g. 42CrMo) ; piston skin: high performance polyurethane/nitrile rubber	The piston core is precision machined, and the rubber skin and the piston core are bonded by high temperature and high pressure vulcanization.	Excellent wear resistance, oil resistance and extrusion resistance, good sealing under high pressure.
Piston rod/intermediate rod	High strength alloy steel (e.g. SAE 4140,42CRMO)	Forging, integral quenching and tempering heat treatment, rod surface precision grinding after hard chromium plating.	High tensile strength and fatigue resistance, smooth and wear-resistant surface, prolong the sealing life of packing.
Valve Assembly (API # 7)	Body/seat: forged alloy steel (e. g. Aisi 8620,20Crnimo) ; rubber: polyurethane/NBR	Seat face carburized and hardened, HRC ≥60, precision ground.	Extremely high resistance to impact and wear, to ensure reliable sealing under high pressure.
Seals/gaskets	Nitrile rubber (NBR) , hydrogenated nitrile rubber (HNBR) , polyurethane (PU)	According to the different parts of the temperature and medium requirements to select the appropriate materials.	Excellent oil resistance, temperature resistance and wear resistance to ensure that the joint surface without leakage.
Key components of power end	Crankshaft: forged 4340/42crmo; gear: forged 4140/4340; connecting rod: forged alloy steel	Crankshaft/gear: quenched and tempered, tooth surface high frequency hardening or carburizing, AGMA class 10 accuracy.	Excellent strength, toughness and anti-fatigue performance to ensure smooth and reliable power transmission.

Key subsidiary systems

To ensure the smooth and safe operation of the pump, the GA-550 is usually equipped with the following key accessories:

Table: General specification of GA-550 triplex mud pump

Parameters	Values (in imperial system)	Numerical Value (metric)
Type of pump	Triplex, Single-Acting Piston	Triplex, single-acting piston pump
Rated input power	550 HP	410kw
Rated pump speed	145-150SPM	145-150SPM
Stroke length	7.00 in	177.8 mm
Maximum work stress	5,000 PSI	34.5 MPa
Maximum cylinder liner size	7.00 in	177.8 mm
Maximum displacement	577 GPM	2,184 LPM
Gear ratio	4.625:1to	4.625:1to 5.05:1
Suction line flanges	8"ANSI 150 #	DN200
Discharge line flange	4"Or 5" API 5000 #	DN100 or DN125
Pump body weight (bare pump)	13,800-18,000 lbs	6,260-8,165 kg
Dimensions (length x width x height)	120"X 57.06" x 48.93	3048X 1450x 1243mm
Crankcase oil	55gallons	208liters

Power End: the cornerstone of reliability

Frame construction: the power end of the Ga-550 is constructed of high-strength welded steel plates.

Crankshaft and gear train:

Hydraulic end: the core area of high wear and high performance

Modular design concept: the GA-550 features a modern modular hydraulic end design with a two-disc"L" or Valve-over-Valve design.

Valve assembly components:

Valve Assembly and seat: as the heart of the hydraulic end, the seat is usually made of a forged alloy steel suitable for surface hardening, such as AISI 8620 or 20CrNiMo.

Table: Great n Ga-550 Performance Matrix (power rating: 550HP, stroke: 7") ."

Cylinder liner inner diameter (in.)	Maximum discharge pressure (PSI)	Displacement per revolution (gallons)	Displacement per 145spm (GPM)	Displacement at 120SPM (GPM)	Displacement at 100SPM (GPM)
7	1,673	3.50	507	420	350
6-1/2	1,940	3.02	437	362	302
6	2,277	2.57	373	308	257
5-1/2	2,710	2.16	313	259	216
5	3,279	1.78	259	214	178
4-1/2	4,048	1.45	210	174	145
4	5,000	1.14	166	137	114

Source: displacement based on 100% volumetric efficiency.

Table: material and process specifications for Ga-550 wear parts and key components

Components	Standard materials	Manufacturing and processing	Core performance advantages
Liners	High chromium bimetal (case: forged steel; inner case: centrifugally cast high chromium iron) ; zirconia ceramics	Precision honing of bore, interference fit between housing and inner sleeve. The hardness HRC of bimetal inner sleeve is more than 62.	Excellent wear resistance and corrosion resistance, long service life. Longer service life of ceramic cylinder liner.
Pistons	Piston core: forged alloy steel (e. g. 42CrMo) ; piston skin: high performance polyurethane/nitrile rubber	The piston core is precision machined, and the rubber skin and the piston core are bonded by high temperature and high pressure vulcanization.	Excellent wear resistance, oil resistance and extrusion resistance, good sealing under high pressure.
Piston rod/intermediate rod	High strength alloy steel (e.g. SAE 4140,42CRMO)	Forging, integral quenching and tempering heat treatment, rod surface precision grinding after hard chromium plating.	High tensile strength and fatigue resistance, smooth and wear-resistant surface, prolong the sealing life of packing.
Valve Assembly (API # 7)	Body/seat: forged alloy steel (e. g. Aisi 8620,20Crnimo) ; rubber: polyurethane/NBR	Seat face carburized and hardened, HRC ≥60, precision ground.	Extremely high resistance to impact and wear, to ensure reliable sealing under high pressure.
Seals/gaskets	Nitrile rubber (NBR) , hydrogenated nitrile rubber (HNBR) , polyurethane (PU)	According to the different parts of the temperature and medium requirements to select the appropriate materials.	Excellent oil resistance, temperature resistance and wear resistance to ensure that the joint surface without leakage.
Key components of power end	Crankshaft: forged 4340/42crmo; gear: forged 4140/4340; connecting rod: forged alloy steel	Crankshaft/gear: quenched and tempered, tooth surface high frequency hardening or carburizing, AGMA class 10 accuracy.	Excellent strength, toughness and anti-fatigue performance to ensure smooth and reliable power transmission.

Key subsidiary systems

To ensure the smooth and safe operation of the pump, the GA-550 is usually equipped with the following key accessories:

Pulsation Dampener: installed on the discharge manifold to absorb the pressure Pulsation from the pump, making the flow smoother and protecting downstream equipment and lines.

Safety Relief Valve: an overpressure protection device that automatically opens the Relief Valve when the discharge pressure exceeds a set value, protecting the pump and the entire high-pressure system from damage.

Liner Wash System: sprays cooling fluid between the piston rod and Liner to Wash away abrasive particles, reducing piston and Liner wear and extending their life.