
PRODUCT Detail
Cummins’ QSK50 Tier 4 Final drilling power modules have been developed to meet the stringent measures introduced by the Environmental Protection Agency (EPA). Tier 4 Final emission standards, in comparison to Tier 3 and Tier 2, represent a significant step towards reducing nitrous oxides (NOx) and particulate matter (PM). Indeed, the QSK50 Tier 4 Final drilling power module produces 45% less nitrous oxides and 85% less particulate matter than its Tier 2 predecessor.
Building on the legendary K50 and subsequent Tier 2 QSK50 drilling power modules, the QSK50 EPA Tier 4 final drilling power modules are designed, developed, assembled and tested inhouse by Cummins. Every component from the engine to the alternator is built to provide optimum performance, reliability, and versatility for oil and gas drilling applications.
The QSK50 Tier 4 Final engine uses the Cummins MCRS Fuel System technology to deliver four ratings from 1,500bhp (1,119kWm) at 1,200rpm and 1,900bhp (1417kWm) at 1800rpm, while meeting US EPA Tier 4 Final Emissions standards. These engines are coupled with a form-wound alternator sized for drilling rig service with electrical ratings from 1,000kWe to 1,300kWe at 60Hz.
The complete drilling power module package is backed by Cummins service network and warranty, ensuring greater uptime availability and increased rig efficiency.
For more information, contact your local Cummins Distributor.
Additional relevant resources:
General Specifications | |||
---|---|---|---|
Engine Type | Cummins QSK50 T4F, four-stroke diesel | Weight w/o radiator | 32,000 lb (14,515 kg) |
Bore | 6.26 in (159 mm) | Lube oil capacity | 65 gal (246 liters) |
Stroke | 6.26 in (159 mm) | Base design | three-point mounting |
Displacement | 3,082 in3 (50.3 liters) | Alternator Rotor design | Two-bearing |
Aspiration | Turbocharged and aftercooled | ||
Governor | Electronic | Alternator insulation | Class H |
Power Module Specification | |
---|---|
Governor regulation class | ISO8528 Part 1 Class G3 |
Voltage regulation, no load to full load | ± 0.5% |
Random voltage variation | ± 0.5% |
Frequency regulation | Isochronous |
Random frequency variation | ± 0.25% |

Download brochures
Register Cummins products to get up to date information on your repairs, products details
technical support and much more
similar products

KTAA19 for Commercial Industrial
Power
-
Torque
-
Certification
N/A

KTAA19 for Commercial Industrial
Power
-
Torque
-
Certification
N/A

GTA8.3G for Commercial Industrial
Power
-
Torque
-
Certification
N/A
GTA8.3G for Commercial Industrial
Power
-
Torque
-
Certification
N/A

QST30 for Oil & Gas
Power
1200 - 1500 hp
Torque
3750 - 4877 lb-ft
Certification

QSK50 Dual Fuel for Well Servicing
Power
2250 - 2500 hp
Torque
-
Certification
EPA Tier 2, EPA Tier 4

QSK50-DPM Tier 2/CSIII
Power
1450 - 1450 hp
Torque
-
Certification
EPA Tier 2

QSK50 Well Servicing Applications
Power
2000 - 2500 hp
Torque
5805 - 7081 lb-ft
Certification
EPA Tier 2, EU Stage I

QSK60 for Oil & Gas
Power
-
Torque
-
Certification
EPA Tier 1

QSK50 for Drilling
Power
1400 - 1600 hp
Torque
4707 - 5041 lb-ft
Certification
EPA Tier 2, EU Stage I

QSK50 for Well Servicing (Tier 4 Final)
Power
2250 - 2500 hp
Torque
6299 - 7080 lb-ft
Certification
EPA Tier 4, EU Stage I

QSK38 Well Servicing Applications
Power
920 - 1260 hp
Torque
3591 - 4590 lb-ft
Certification
EPA Tier 2, EU Stage I

QSK38 for Drilling
Power
920 - 1260 hp
Torque
-
Certification
EPA Tier 2, EU Stage I

QSK38 Land-Based Power Module for Drilling
Power
1034 - 1034 hp
Torque
-
Certification
EPA Tier 2, EU Stage I
