The Gardner Denver GQ-GXQ is a triplex mud pump built around a one-piece alloy cast iron power end housing. The single-piece casting removes coupling joints and keeps internal components aligned under heavy piston rod loads. Its transmission uses a continuous herringbone gear, with the main gear and eccentric formed as one rigid unit, while the crankshaft and connecting rods are made from high-strength ductile iron. The double-helix herringbone tooth form provides multiple contact points for smooth, quiet power transmission and a self-aligning action that reduces gear wear. Factory data rates the pump at 1470 PSI max working pressure and 70 SPM rated speed, with maximum pressure varying by liner size: 1470 PSI with a 5 in liner, stepping down through 5.5, 6, 6.5, 6.75 and 7 in to 668 PSI with a 7.25 in liner. We supply replacement fluid-end parts for this model to drilling contractors and service companies across Canada, the United States and international oil and gas markets.
FAQ
What is the maximum working pressure of the Gardner Denver GQ-GXQ mud pump?
Factory data lists the GQ-GXQ at 1470 PSI max working pressure with a 5 in liner at 70 SPM rated speed. Pressure capability depends on liner size, stepping down to 668 PSI with the 7.25 in liner.
Which liner sizes are available for the GQ-GXQ?
The factory liner chart covers 5 in, 5.5 in, 6 in, 6.5 in, 6.75 in, 7 in and 7.25 in bores, each with its own maximum pressure rating from 1470 PSI down to 668 PSI. Choose the bore that matches your required pressure and flow balance.
Do you stock fluid-end parts for the Gardner Denver GQ-GXQ?
Our inventory for this model changes with demand, so please contact us for current availability on liners, pistons, valves, valve seats and packing for the GQ-GXQ.
Can you ship GQ-GXQ parts to Canada or the United States?
Yes. We regularly export mud pump fluid-end parts to Canada, the US and international oil and gas destinations, with shipment under HS code 84139100 and export documentation provided.
What makes the GQ-GXQ power end durable in continuous drilling service?
Its one-piece alloy cast iron housing keeps all internal components aligned under piston rod loads, and the continuous herringbone gear gives multi-point tooth contact with a self-aligning action, reducing wear compared with conventional gear drives.