308E CR SB


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308E CR SB Standard Equipment

  • Cab fully glazed
  • Interior light
  • Pillar mounted windshield wiper and washer
  • Air conditioning, heater and defroster
  • Bolt-on FOGS capability
  • Openable uppper front windshield
  • Removable lower front windshield
  • Openable skylight
  • Right and rear windows, polycarbonate
  • Sliding door window, tempered glass
  • Rear window, emergency exit
  • Seat, high back suspension, fabric covered, 4 way adjustment
  • Armrest, adjustable
  • Seatbelt 75 mm (3 in)
  • Coat hook
  • Cup holder
  • COMPASS display panel
  • Literature compartment
  • Floor mat
  • Mirrors
  • AM/FM radio ready mounting area (radio standard in North America)
  • Monitoring system, guages and indicators
  • Neutral lever hydraulic lockout
  • Joystick pilot operated controls
  • Auxiliary control, joystick (proportional control)
  • Travel control pedals with hand levers
  • Power supply, 12V
  • Dial type accelerator
  • Work light, cab-mounted
  • CAT HD batteries, (cold weather start)
  • Altenator 35 amp
  • Warning horn
  • 24-volt electric starting

  • MMC 4M40-TL Diesel Engine
  • Certified to meet U.S. EPA Interim Tier 4
  • Extended life coolant -37°C (-34°F)
  • Variable displacement load sense hydraulics
  • Combined function auxiliary hydraulic circuit
  • Quick disconnect fittings
  • Automatic swing parking brake
  • Control pattern changer
  • Travel alarm
  • Straight line travel
  • Boom check valve
  • Two speed auto-shift travel
  • Automatic engine idle
  • Boom lowering device (accumulator)
  • Reverse swing damping valve
  • 2500 m (8,200 ft) altitude capability

  • Steel tracks, 450 mm (18 in)
  • Dozer blade with float function
  • Blade, weld on cutting edge
  • Grease lubricated track seals
  • Idler end track guiding guards
  • Hydraulic track adjusters

  • Caterpillar Corporate "One Key" System
  • Fuel cap, lockable
  • Doors, lockable
  • Stick, standard, thumb ready
  • Bucket linkage with lifting eye
  • Additional counterweight
  • Toolbox
  • Antenna
  • Pictograph films

308E CR SB Optional Equipment

  • Headrest for KAB 528P/C, T8P/C
  • Cab fan
  • Sun visor
  • Light, boom-mounted

  • Cooling package, high ambient
  • Starting kit, cold weather
  • Coolant, extended life -50°C (-58°F)
  • Medium pressure auxiliary lines
  • Hydraulic quick coupler lines

  • Rubber tracks, 450 mm (18 in)
  • Segmented rubber track, 450 mm (18 in)
  • Bolt on rubber pads
  • Steel tracks, 600 mm (24 in)
  • Blade, bolt on cutting edge

  • Quick Couplers: Mechanical, Hydraulic, Pin Lock and Wedge Style
  • Buckets: Heavy Duty, Heavy Duty Rock, Ditch Cleaning and Pin Lock
  • Thumbs: Hydraulic, Full Rotation and Stiff Link
  • Auger
  • Hammer
  • Shear
  • Compactor

  • Stick, long
  • Guard - Front screen cab and canopy
  • Guard - Vandalism
  • Guard - Falling objects
  • Guard - Swivel
  • Rain protector, cab front


The Cat 308E CR SB Mini Hydraulic Excavator delivers superior performance and comfort while reducing your operating costs. The large spacious cab provides a comfortable work area. Intuitive seat-mounted controls are easy to use for greater job accuracy and efficiency. The compact radius design allows jobsite work where other machines cannot operate--significantly impacting your bottom line. The 308E CR SB sets the standard for excavators in the eight-ton size class.


Engine Model Cat® C3.3B Tier 4 Interim, Stage IIIA Cat® C3.3B Tier 4 Interim, Stage IIIA Less
Net Power 65.0 mm H2O 48.5 kg/mm Less
Gross Power 66.6 mm H2O 49.7 kg/mm Less


Operating Weight 18371.0 lb 8333.0 null Less
Operating Weight - With Cab 18371.0 lb 8333.0 null Less


Maximum Digging Depth - Standard Stick 13.7 ft 4150.0 mm² Less
Maximum Reach - Ground Level - Standard Stick 22.9 ft 6820.0 mm² Less
Maximum Dump Height - Long Stick 22.11 ft 6990.0 mm² Less
Maximum Dump Height - Standard Stick 21.9 ft 6640.0 mm² Less
Maximum Vertical Dig Depth - Standard Stick 13.7 ft 4150.0 mm² Less
Shipping Height 8.4 ft 2550.0 mm² Less
Shipping Length 20.11 ft 6380.0 mm² Less

Engine Dimensions

Bore 3.7 in 94.0 mm² Less
Stroke 4.7 in 120.0 mm² Less
Displacement 203.2 in³ 3.33 l Less

Travel System

Gradeability - Maximum - High 30.0 ° 30.0 ° Less
Maximum Traction Force 14500.0 lb 64.5 kN Less
Travel Speed - High 3.26 mile/h 5.26 km/h Less
Travel Speed - Low 2.06 mile/h 3.32 km/h Less

Hydraulic System

Operating Pressure - Equipment 4061.0 psi 280.0 bar Less
Digging Force - Stick - Standard 9015.0 lb 40.1 kN Less
Digging Force - Stick - Long 7891.0 lb 35.1 kN Less
Digging Force - Bucket 13534.0 lb 60.2 kN Less
Operating Pressure - Travel 4641.0 psi 320.0 bar Less
Operating Pressure - Swing 3481.0 psi 240.0 bar Less
Auxiliary Circuit - Primary 33.8 gal/min 128.0 l/min Less
Auxiliary Circuit - Secondary 16.9 gal/min 64.0 l/min Less

Swing System

Machine Swing Speed 10.0 r/min 10.0 r/min Less

Sound Levels

Exterior Cab 98.0 dB(A) 98.0 dB(A) Less
Interior Cab 79.0 dB(A) 79.0 dB(A) Less

Service Refill Capacities

Cooling System 3.7 gal (US) 14.0 l Less
Engine Oil 3.0 gal (US) 11.2 l Less
Hydraulic Tank 21.7 gal (US) 82.0 l Less
Fuel Tank 33.0 gal (US) 125.0 l Less
Hydraulic System 24.8 gal (US) 94.0 l Less

MSC Comments

MSC Spec Date 1/06 1/06 Less


Operator Station

Compact Radius






Work Tools

Work Tools

Work Tools

Work Tools









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