The Cat® C2.2 Industrial Power Unit is offered in ratings ranging from 37.3 – 49.2 bkW (50.0 – 65.9 bhp) @ 2800-3000 rpm. These ratings meet U.S. EPA Tier 4 Interim equivalent, EU Stage IIIA equivalent emission standards. Conveniently pre-configured for a wide range of applications, the Cat® Industrial Power Unit is a complete power package containing a radiator, flywheel, alternator and alternator wiring completely pre-assembled for fast, straightforward installation in a number of OEM, customer and packager applications. These fuel efficient units are ready made for irrigation, industrial, mining and other pump applications.


Minimum Rating 37.3 bkW
Maximum Rating 49.2 bkW
Rated Speed 2800-3000 rpm.
Emissions U.S. EPA Tier 4 Interim Equivalent, EU Stage IIIA Equivalent
Engine Configuration Inline 4, 4-Stroke-Cycle Diesel
Bore 84 mm (3.3 in)
Stroke 100 mm (3.9 in)
Displacement 2.216 L (135 in³)
Aspiration Naturally Aspirated (NA), Turbocharged (T), or Turbo Aftercooled (TA)
Compression Ratio 23.3:1
Rotation from Flywheel End Counterclockwise
Cooling System – Capacity 6.98 L (7.4 qt)
Lube System – Refill 10.6 L (11.2 qt)
Height 854-973 mm (33.62-38.3 in)
Length 946-973 mm (37.24-38.3 in)
Weight – Net Dry – Standard Configuration Without Oil, Cooling, Clutch, Compressor, A/C 218-228 kg (480-502 lb)
Width 513-590 mm (20.3-23.23 in)


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