The Great American 550 is a triplex single-acting mud pump rated for a maximum working pressure of 5000 PSI at a rated speed of 145 SPM. Its pressure capability depends on liner size: 7 in liners are rated to 1673 PSI, 6.5 in to 1940 PSI, 6 in to 2277 PSI, 5.5 in to 2710 PSI, 5 in to 3279 PSI, 4.5 in to 4048 PSI and 4 in to the full 5000 PSI. The power end uses a high-strength welded steel-plate frame, a one-piece forged alloy-steel crankshaft with dynamic balancing, and herringbone (double-helical) gearing that runs smoothly and quietly while transmitting high torque and balancing axial thrust. We supply matching fluid-end wear parts for this model to drilling contractors across Canada, the United States and international oilfield markets.
FAQ
What is the maximum working pressure of the Great American 550 mud pump?
The Great American 550 is rated for a maximum working pressure of 5000 PSI at a rated speed of 145 SPM. Achievable pressure depends on liner size, from 1673 PSI with a 7 in liner up to 5000 PSI with a 4 in liner.
Which liner sizes are available for the Great American 550?
Factory data covers liner sizes of 7 in, 6.5 in, 6 in, 5.5 in, 5 in, 4.5 in and 4 in, with maximum pressures ranging from 1673 PSI to 5000 PSI respectively. Contact us for current availability of the size you need.
Do you stock fluid-end parts for the Great American 550?
We supply liners, pistons, valves, valve seats, inserts, springs and packing for the Great American 550. Our online listing for this model currently shows no dedicated stock items, so please contact us for current availability and lead time.
Can you ship Great American 550 parts to Canada or the United States?
Yes. We regularly ship mud pump parts to customers in Canada, the United States and other oil-producing regions. Pump parts are classified under HS code 84139100, which helps streamline customs clearance.
What should I provide when ordering Great American 550 parts?
Provide the model name 550, the part type and the liner or valve size in service. If you know your operating pressure, include it as well so we can confirm the part matches the factory rating for your liner size.