308E2 CR SB

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The Cat 308E2 CR SB Mini Hydraulic Excavator delivers high performance with the versatility of a swing boom front linkage in a durable Compact Radius design to help you work in the tightest applications. With the COMPASS display panel, Tier 4 Final engine and new hydraulic system, the 308E2 CR SB is more productive, versatile and cost effective.


Engine Model Cat® C3.3B Cat® C3.3B Less
Net Power 65.0 hp 48.5 kW Less
Bore 3.7 in 94.0 mm Less
Displacement 203.2 in3 3.33 L Less
Gross Power (ISO 14396) 66.6 hp 49.7 kW Less
Net Power (ISO 9249) 65.0 hp 48.5 kW Less
Rated Net Power @ 2,400 rpm (ISO 9249/EEC 80/1269) 65.0 hp 48.5 kW Less
Stroke 4.7 in 120.0 mm Less


Operating Weight 18519.0 lb 8400.0 kg Less
Operating Weight with Cab 18519.0 lb 8400.0 kg Less

Travel System

Ground Pressure 5.26 psi 36.3 kPa Less
Gradeability (maximum) 30.0 Degrees 30.0 Degrees Less
Maximum Traction Force - High Speed 14500.0 lb 64.5 kN Less
Maximum Traction Force - Low Speed 8408.0 lb 37.4 kN Less
Travel Speed - High 3.17 mph 5.1 km/h Less
Travel Speed - Low 1.74 mph 2.8 km/h Less

Hydraulic System

Operating Pressure - Equipment 4061.0 psi 28000.0 kPa Less
Digging Force - Stick (long) 7891.0 lb 35.1 kN Less
Digging Force - Bucket 13534.0 lb 60.2 kN Less
Digging Force - Stick (standard) 9015.0 lb 40.1 kN Less
Operating Pressure - Travel 4061.0 psi 28000.0 kPa Less
Operating Pressure - Swing 3481.0 psi 24000.0 kPa Less
Auxiliary Circuit - Primary (186 bar/2,734 psi) 33.8 gal/min 128.0 L/min Less
Auxiliary Circuit - Secondary (174 bar/2,524 psi) 16.9 gal/min 64.0 L/min Less
Pump Flow at 2,000 rpm 39.6 gal/min 150.0 L/min Less

Swing System

Machine Swing Speed 11.0 RPM 11.0 RPM Less
Boom Swing - Right 50.0 Degrees 50.0 Degrees Less
Boom Swing - Left 60.0 Degrees 60.0 Degrees Less


Width 91.3 in 2320.0 mm Less
Height 17.7 in 450.0 mm Less
Dig Depth 14.2 in 360.0 mm Less
Lift Height 15.0 in 380.0 mm Less

Service Refill Capacities

Cooling System 3.7 gal 14.0 L Less
Engine Oil 3.0 gal 11.2 L Less
Hydraulic Tank 21.7 gal 82.0 L Less
Fuel Tank 33.0 gal 125.0 L Less
Hydraulic System 24.8 gal 94.0 L Less

Operating Specifications

Counterweight 551.0 lb 251.0 kg Less
Machine Overhang 11.0 in 279.4 mm Less
Machine Overhang with Counterweight 16.0 in 406.0 mm Less
Maximum Dig Depth 13.62 ft 4150.0 mm Less
Stick Length - Long 7.25 ft 2210.0 mm Less
Stick Length - Standard 5.48 ft 1670.0 mm Less


Average Exterior Sound Pressure 99 dB(A) ISO 6395 - Dynamic Test 99 dB(A) ISO 6395 - Dynamic Test Less
Dynamic Operator Sound Pressure 70 dB(A) ISO 6396 70 dB(A) ISO 6396 Less

Compact Radius

Work in the tightest spaces.

Operator Station

Superior comfort to keep you productive throughout the work day.

COMPASS Control Panel

Complete, Operational, Maintenance, Performance and Security System.

Performance and Controllability

Powerful digging combined with smooth responsive control.


Excellent stability.

Engine and Serviceability

Superior power with easy access and minimal maintenance requirements keep you working.

Work Tools

Matched to meet your application needs.

308E2 CR SB Standard Equipment

1-way and 2-way (combined function) auxiliary hydraulic lines

Adjustable auxiliary flow control for work tools

Adjustable wrist rests

Air suspension, heated seat


Anti-theft security system

Automatic engine idle

Automatic swing park brake

Automatic two speed travel

Auxiliary line quick disconnects

Cab mounted work light

Cab, ROPS ISO 12117-2 with radio ready mounting, A/C, heater/defroster, interior light and windshield wiper/washer

Coat hook

COMPASS display panel

Cup holder

Control pattern changer (not available in Europe)

Continuous flow

Dozer blade with float function

Eco mode setting for up to 20% fuel savings

Floor mat

Foot travel pedals

High ambient cooling (standard in all regions except Europe)


Hydraulic oil cooler

Lifting bar on bucket linkage (standard in U.S. only)

Low maintenance linkage pin joints

Maintenance free battery

Rearview mirror

Retractable seatbelt

Standard stick

“Thumb ready” sticks (standard equipment for all regions except Europe)

Travel alarm (optional in Europe)

308E2 CR SB Optional Equipment

AM/FM radio with auxiliary input (optional in Europe, standard for all other regions)

Block heater

Boom and stick check valve

Boom mounted light - right side

Dozer blade with bolt on cutting edge

Dual lock hydraulic coupler (available from dealer)

Dual lock mechanical coupler (available from dealer)

Ecology drain valve for hydraulic tank

Extra counterweight for extreme lifting applications - 251 kg (553 lb)


Front window mesh guard

Front window steel bar guard

Hydraulic quick coupler lines

Lifting eye on bucket linkage (optional in all regions except the U.S.)

Overhead guard (TOPGUARD Level 2)

Rain guard

Secondary auxiliary hydraulic lines

Standard or long stick

Track options:
  • Rubber belt - 450 mm (18 in)
  • Steel track - 450 mm (18 in)
  • Steel track - 600 mm (24 in)
  • Steel track with rubber pads - 450 mm (18 in)