Engine Model Cat® C3.3B
Net Power 65 HP (48.5 kW)
Bore 3.7 in (94 mm)
Displacement 203.2 in³ (3.33 l)
The Cat® 308E2 CR Mini Hydraulic Excavator delivers high performance, durability and versatility in a compact design to help you work in a variety of applications.


Engine Model Cat® C3.3B
Net Power 65 HP (48.5 kW)
Bore 3.7 in (94 mm)
Displacement 203.2 in³ (3.33 l)
Gross Power - ISO 14396 66.6 HP (49.7 kW)
Net Power - ISO 9249 65 HP (48.5 kW)
Rated Net Power - 2,400 rpm - ISO 9249/EEC 80/1269 65 HP (48.5 kW)
Stroke 4.7 in (120 mm)
Operating Weight 18519 lb (8400 kg)
Operating Weight - With Cab 18519 lb (8400 kg)
Ground Pressure 5.26 psi (36.3 kPa)
Gradeability - Maximum 30°
Maximum Traction Force - High Speed 8408 lb (37.4 kN)
Maximum Traction Force - Low Speed 14500 lb (64.5 kN)
Travel Speed - High 3.17 mile/h (5.1 km/h)
Travel Speed - Low 1.74 mile/h (2.8 km/h)
Auxiliary Circuit - Primary (280 bar/4,061 psi) 33.8 gal/min (128 l/min)
Auxiliary Circuit - Secondary (280 bar/4,061 psi) 16.9 gal/min (64 l/min)
Digging Force - Bucket 13534 lb (60.2 kN)
Digging Force - Stick - Long 7891 lb (35.1 kN)
Digging Force - Stick - Standard 9015 lb (40.1 kN)
Operating Pressure - Equipment 4061 psi (28000 kPa)
Operating Pressure - Swing 3481 psi (24000 kPa)
Operating Pressure - Travel 4061 psi (28000 kPa)
Pump Flow at 2,000 rpm 39.6 gal/min (150 l/min)
Machine Swing Speed 11 r/min (11 r/min)
Boom Swing - Left 60°
Boom Swing - Right 50°
Width 91.3 in (2320 mm)
Height 17.7 in (450 mm)
Dig Depth 14.2 in (360 mm)
Lift Height 15 in (380 mm)
Cooling System 3.7 gal (US) (14 l)
Engine Oil 3 gal (US) (11.2 l)
Hydraulic Tank 21.7 gal (US) (82 l)
Fuel Tank 33 gal (US) (125 l)
Hydraulic System 24.8 gal (US) (94 l)
Counterweight 551 lb (251 kg)
Machine Overhang 11 in (279.4 mm)
Machine Overhang with Counterweight 16 in (406 mm)
Maximum Dig Depth 13.62 ft (4150 mm)
Stick Length - Long 7.25 ft (2210 mm)
Stick Length - Standard 5.5 ft (1670 mm)
Average Exterior Sound Pressure 99 dB(A) ISO 6395 – Dynamic Test
Dynamic Operator Sound Pressure 70 dB(A) ISO 6396
Air Conditioning The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a (Global Warming Potential = 1430). The system contains 1.3 kg (2.9 lb) of refrigerant which has a CO2 equivalent of 1.9 metric tonnes (4,189 lb).
Emissions Meets U.S. EPA Tier 4 Final and EU Stage IIIB emission standards.
Note Load sensing hydraulics with variable displacement piston pump.
Note Automatic swing break, spring applied, hydraulic release.
Note (1) Each track is driven by one independent 2-speed motor.
Note (2) Drive modules are integrated into the roller frame for total protection.
Note (3) Straight line travel when tracking and operating the front linkage simultaneously.
Note (1) Weight with rubber tracks, bucket, operator (75 kg/165 lb), full fuel and auxiliary lines.
Note (2) Weight varies depending on machine configuration.

Benefits and Features

  • The durable hoods and frame and the compact radius design of the 308E2 CR let you work comfortably and confidently in confined areas.
  • The operator environment includes a high quality suspension seat, easy to adjust armrests and 100% pilot controls which offer consistent and long-lasting controllability.

  • High Definition Hydraulic System provides a load sensing and flow sharing capability leading to operational precision, efficient performance and greater controllability.
  • Power on Demand provides optimal efficiency and performance the moment you need it. This automatic system ensures fuel efficiency through appropriate engine rating to meet all operational needs as required.

  • Broad range of Cat Work Tools make the Cat Mini Excavator a versatile machine, able to meet the requirements of any job site.
  • 180 degrees of bucket rotation provides greater material retention during truck loading and easier flat wall digging without having to reposition the machine.

  • Front shovel bucket orientation provides the operator with more ways to get the job done faster.
  • COMPASS Control Panel is a standard feature that allows the operator to easily adjust auxiliary flows to achieve the optimal work tool performance, activate auto idle for improved fuel efficiency and utilize the security system to ensure protection of valuable assets with the simple touch of a button.
  • The Site Reference System included in the COMPASS monitor provides output from pitch and roll sensors to aid in grading and level trenching. This impacts accuracy and productivity for job site finishing.
  • Rearview camera improves operator productivity and efficiency through increased visibility, making work easier to complete.

  • Convenient service and maintenance requirements include ease of access to daily check points, 500 hour engine oil and filter change period, 500 hour grease interval on front implement, S·O·SSM oil sampling valve and overall long term durability.

  • All Cat Mini Excavators from 3.5 metric tons to 8 metric tons are ROPS, TOPS and Top Guard Level II certified and include the Cat Interlock (hydraulic lockout) System, a certified accumulator which allows for auxiliary pressure to be released, making connecting and disconnecting work tools safer and easier, and a travel alarm. All of these safety features are standard on the E2 model lineup (travel alarm optional in Europe).

Standard Equipment

  • Cat C3.3B diesel engine (meets U.S. EPA Tier 4 Final/EU Stage IIIB emission standards)
  • 1-way and 2-way (combined function)
  • 100% pilot control ergonomic joysticks
  • Dozer blade with float function
  • 180 degree bucket rotation
  • 12 volt electrical system
  • Cab and boom light with time delay capability
  • Anti-theft system (COMPASS)

Optional Equipment

  • Engine block heater
  • Quick coupler lines
  • Blade, weld on
  • Quick coupler: manual or hydraulic
  • Mirror, cab rear
  • Battery disconnect
  • Product Link™
  • Counterweight, extra, 1121 kg (2,493 lb) (Standard on VAB configuration.)