Main content
Caterpillar
3508B Land Mechanical Drilling Engine
Cat 3508B engines set the standard in the drilling industry. For many years the 3500 has been the preferred choice by drillers due to their high performance, durability, and reliability in the oilfield.The ideal application for the 3508B engine is mechanical drive for land drilling rigs. Cat engines are backed by the worldwide network of Cat dealers ready to support your operation with technical support, service, parts, and warranty. 3508B engines, with ratings: 671 bkW (900 bhp) @ 1200 rpm meet U.S. EPA Non-road Tier 1 equivalent and CARB Tier 1 equivalent emission standards. They are available using U.S. EPA and EU Flexibility, and for other regulated and non-regulated areas.
Media
Photos
Documents
Details
Specifications
Engine Specifications
| Spec | Value |
|---|---|
| Maximum Rating | 900 BHP 671 bkW |
| Emissions | Non-certified Non-certified |
| Displacement | 2111 in³ 34.5 l |
| Bore | 6.7 in 170 mm |
| Stroke | 7.5 in 190 mm |
| Rated Speed | 1200 r/min 1200 r/min |
| Aspiration | Turbocharged-Aftercooled Turbocharged-Aftercooled |
| Governor and Protection | ADEM A3 ADEM A3 |
| Engine Weight – Net Dry | 9500 lb 4309 kg |
| Oil Change Interval | 500 500 |
| Rotation from Flywheel End | Counterclockwise Counterclockwise |
| Flywheel and Flywheel Housing | SAE No. 00 SAE No. 00 |
| Flywheel Teeth | 151 151 |
Capacity for Liquids
| Spec | Value |
|---|---|
| Minimum Cooling System – Engine Only | 27 gal (US) 103 l |
Dimensions
| Spec | Value |
|---|---|
| Length | 84.1 in 2136 mm |
| Width | 67 in 1702 mm |
| Height | 79.7 in 2024 mm |
Standard Equipment
Air Inlet System
- Separate circuit aftercooler core — corrosion resistant coated (airside), air cleaner (single element w/service indicator)
- Dual rear-mounted turbochargers
Control System
- ADEM A3 ECU — LH
- Electronic fuel injector fuel system (10 amp DC power required todrive electronic engine control unit)
Cooling System
- Torque converter connections
- Thermostats and housing, jacket water pump, gear-drivencentrifugal
- Connections for radiator cooling
- Dual outlets: 88.9 mm O.D. (3.5 in) elbow hose connections
- Separate Circuit Aftercooler (SCAC)
Exhaust System
- Exhaust manifold — dry, stainless steel bellows
- Dual turbochargers with watercooled bearings
- Exhaust outlet: 292 mm I.D. (11.5 in), 12-10.5 mm dia. holes EQ SP,376 mm bolt hole dia.
Flywheels and Flywheel Housing
- Flywheel, SAE No. 0 — 151 teeth
- Flywheel housing — SAE No. 0
Fuel System
- Primary fuel filter
- Fuel priming pump
- Fuel filter — RH spin-on type
- Fuel transfer pump
- Electronically controlled unit injectors
Instrumentation
- Electronic instrument panel
- Instrumentation readouts:
Lube System
- Crankcase breather — top-mounted
- Oil cooler
- Oil filler and dipstick — RH
- Oil pump
- Oil filter — RH spin-on type
- Rear sump oil pan, 250-hour change interval
- Oil pan drain valve — 3/4″ NPT female connection
Mounting System
- Rails — mounting, floor type
Power Take-Offs
- Front housing — two-sided
Protection System
- ADEM A3 ECU system to provide customer-programmableengine deration strategies to protect against adverse operatingconditions
- Emergency stop logic inputs provided at 40-pin customer interfaceconnection
- Air inlet shutoff
General
- Paint — Cat yellow
- Vibration damper and guard
- Lifting eyes
- B-Series LAND
Optional Equipment
Air Inlet System
- Air cleaner and air cleaner mounting
- Remote air inlet adapters
- Air inlet heater
Charging System
- Battery chargers
- Charging alternators
Control System
- Local speed throttle control
- Throttle position sensors
- Load sharing modules
- Governor conversion
Cooling System
- High gloss black folded core radiators
- Coolant regulator conversion
- Belt guard and radiator guard
- Blower fan
- Radiator cover
- Fan drive and fan pulleys
- Water level switch gauge
- Coolant level sensors
- Coolant conditioner
- Expansion tank
- Heat exchanger cooling conversion
- Auxiliary water pump
- Air separator
Emissions Certifications
- IMO Certification and European Union Certification
Exhaust System
- Flexible exhaust fitting
- Elbows and flange
- Flange and exhaust adapters
- Manifold and mufflers
Fuel Systems
- Flexible fuel lines
- Fuel cooler
- Water/fuel separator
- Fuel level switch
Instrumentation
- Customer management device
- Remote panel display and remote cylinder temperature display
- Switches and contactors
- Gauges and instrument panels
Lube System
- Fumes disposal
- Oil pans
- Prelube options
- Sump pumps
- Oil Filters
Mounting System
- Vibration isolators
Power Take-Offs
- Front housing
- Flexible couplings
- Coupling hub
- Front accessory drives
- Auxiliary drive shaft
- Auxiliary drive pulleys
- Front stub shaft
- Damper guard removal
- Pulleys
- Flywheel stub shaft
Protection System
- Shutoffs
- Switches and contractors
- Explosion relief valve
- Sensors
- Oil pressure monitor
- Shutoff controls
- Corrosion protection
Starting System
- Air starting motors — electric
- Air pressure regulator
- Air silencer
- Hydraulic starter
- Air start controls — manual, electric
- Redundant start
- Starting aids
- Battery sets – 24V
- Battery cable and battery rack