Request Info


Minimum Rating1245 ekW (1245 ekW)
Maximum Rating1245 ekW (1245 ekW)
Cooling System - Engine61.5 gal (US) (233 l)
Oil and gas drilling is a complex task that requires specialized power generation equipment. Cat 3500 generator sets are specifically designed for drilling operations of electric AC rigs. The 3500 platform carries decades of field experience in drilling operations across a wide variety of environmental conditions.3516 land drilling generator set. Ratings: 1256 ekW (1835 kVA) @ 60 Hz (1200 rpm). Not emissions certified, available for non-regulated areas.


Minimum Rating1245 ekW (1245 ekW)
Maximum Rating1245 ekW (1245 ekW)
Cooling System - Engine61.5 gal (US) (233 l)
Height98.3 in (2497 mm)
Width93.9 in (2385 mm)
Length310 in (7874 mm)
Fuel SystemMUI
Displacement4210 in³ (69 l)
Stroke7.48 in (190 mm)
Engine Control and ProtectionWoodward
Weight40433 lb (18340 kg)
Oil Change Interval500 h (500 h)
Bore6.69 in (170 mm)
Lube Oil System - Refill107 gal (US) (405 l)

Benefits and Features

- Developed specifically to meet the demands of oil and gas applications- Proven reliability and durability- Robust diesel strength design prolongs life and lowers owning and operating costs- Designed to perform in oilfield conditions, including high ambient and high altitude applications- Market-leading power density- Designed to perform in oilfield conditions, including high ambient and high altitude applications- Long overhaul life proven in oilfield applications- Core engine components designed for reconditioningand reuse at overhaul

- Inner-outer base mounting configuration simplifies rigintegration- Wide range of attachments enable configurationflexibility- Inner base three-point generator mounting maintainsfactory alignment- Single lifting point simplifies installation work

- E-stop pushbutton on instrument panel- Air shutoff and explosion relief valves available- Extra alarms, inputs, and outputs available

For any petroleum application, trust Caterpillar to meet your project needs with custom factory generator sets and mechanical packages. Cat engines, generators, controls, radiators, and transmissions can be custom designed and matched in collaboration with our local dealers to create unique solutions. Custom packages are globally supported and are covered by a one year warranty after startup.

- Every Cat generator set is full-load tested to ensureproper engine performance.- Generator sets are assembled, tested, andvalidated as a package to ensure performance, reliabilityand durability.

- More than 2,200 dealer outlets- Cat factory-trained dealer technicians service everyaspect of your Cat petroleum product- Worldwide parts availability, service, and warranty- Preventive maintenance agreements available for repairbefore-failure options- S•O•SSM program matches your oil and coolant samplesagainst Caterpillar set standards to determine:• Internal engine component condition• Presence of unwanted fluids• Presence of combustion by-products• Site-specific oil change interval

Ownership of these manufacturing processes enablesCaterpillar to produce high quality, dependable products.

For all your petroleum power requirements, visit

Standard Equipment

  • Corrosion-resistant aftercooler core
  • Regular duty air cleaner
  • Service indicator
  • Governor, Woodward EG6PC actuator — RH
  • Magnetic pickup
  • Thermostats and housing (dual outlet)
  • Jacket water pump, gear driven
  • Dry exhaust manifold
  • Exhaust flexible fitting, adapters, and flanges
  • SAE No. 00 flywheel
  • SAE No. 00 flywheel housing
  • SAE standard rotation
  • Fuel filter
  • Fuel transfer pump
  • Flexible fuel lines
  • Fuel priming pump
  • Oilfield generator
  • Twin-bearing, close-coupled
  • Analog instrument gauges:
  • Crankcase breather
  • Oil cooler
  • Oil filter
  • Shallow oil pan
  • Oil drain extension, 2 in NPT female connection
  • Oilfield base 7.85 m (25 ft 9 in) length
  • Heavy-duty land rig inner baseframe — three-point mount to oilfield base
  • Accessory drive
  • Front housing, two-sided
  • Hydra-mechanical shutoffs (low oil pressure, high water temperatureand overspeed, air inlet shutoff). Monitoring gauge and emergencyremote shutoff
  • Alarm switches, low oil pressure, high water temperature (MarineSociety approved) for connection to customer supplied alarm panel
  • Manual shutoff control, LH
  • Air starting motor
  • Air silencer
  • Paint - Cat yellow
  • Vibration damper and guard
  • Lifting eyes

Optional Equipment

  • Heavy duty air cleaner
  • Remote air inlet adapters
  • Load sharing governor, 2301A
  • Load sharing module
  • Governor conversion to 0-200 mA direct rack control
  • Coolant level sensors
  • Connections
  • Exhaust elbows
  • Exhaust mufflers
  • Primary fuel filter
  • Low voltage extension box
  • Potential and current transformers
  • Air filter
  • Cable access box
  • Bearing RTDs
  • Customer management device
  • Gauges and instrumentation panels
  • Switches and contactors
  • Crankcase fumes disposal
  • Oil pan accessories
  • Crankshaft pulley
  • Front stub shaft
  • Charging alternator
  • Explosion relief valves (3)
  • Shutoffs
  • Switches and contactors
  • Manual air starter
  • Air pressure regulator
  • Engine barring group