Pump — Gardner Denver PZ-11 (PZL)

• Type: Triplex, single-acting piston mud pump

• Max input power: 1,600 BHP (1,193 kW)

• Stroke length: 11 in (279 mm)

• Max pump speed: 115 RPM

• Gear ratio (jackshaft:pump): 4.38:1 → ~504 RPM jackshaft at 115 RPM pump

• Max rod load: ~150,300 lb (668 kN)

• Weight: ~37,000 lb bare pump; ~41,400 lb with large steel skid

• Features: double-extended jackshaft for sheaves/sprockets, full roller bearings, API suction & discharge, hydrostatic-tested cast-steel discharge manifold

Fluid end / pressure ratings

• Standard: 5,000 psi

• Optional HP fluid end: 7,500 psi

Pump performance at 115 RPM

• 7.0" liner → ~632 GPM, 3,900 psi (5,000-psi FE) / 3,900 psi (7,500-psi FE)

• 6.5" liner → ~545 GPM, 4,500 psi (5k) / 4,500 psi (7.5k)

• 6.0" liner → ~465 GPM, 5,000 psi (5k) / ~5,300 psi (7.5k)

• 5.5" liner → ~390 GPM, 5,000 psi (5k) / ~6,300 psi (7.5k)

• 5.0" liner → ~323 GPM, 5,000 psi (5k) / ~7,500 psi (7.5k)

Engine — CAT 3512C (HD) Land Mechanical

• Rated power: 1,250–1,475 bhp @ 1,200 rpm

• Configuration: V-12, turbocharged/aftercooled, electronic ADEM A3

• Displacement: 3,574 in³ (58.6 L)

• Bore: 6.69 in (170 mm)

• Stroke: 8.46 in (215 mm)

• Dimensions (L×W×H): 105.6 × 70.5 × 79.5 in

• Dry weight: ~11,945 lb

Note: A 3512C at 1,475 bhp will run the PZ-11 effectively but won’t fully load its 1,600-bhp rating.