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308 CR (Fixed Boom)

Mini Excavators

The Cat® 308 CR Mini Excavator delivers maximum power and performance in a mini size to help you work in a wide range of applications.

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Net Power 51.8 kW
Displacement 3.33 l
Net Power - 2,200 rpm - ISO 9249:2007, 80/1269/EEC 51.8 kW
Bore 94 mm
Availability Please Call Admin
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308 CR (Fixed Boom)
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OVERVIEW

Mini Excavators Inspired by Our Customers

FEATURES & BENEFITS

ALL DAY COMFORT

A sealed and pressurized cab is equipped with an improved air conditioning system, adjustable wrist rests and a suspension seat to help keep you working comfortably all d... Read more

EASY TO OPERATE

Controls are easy to use and the intuitive Next Generation Monitor provides customizable machine operator preferences and easy to read machine information. Read more

STICK STEER TRAVEL MODE

Moving around the job site is even easier with Cat Stick Steer. Easily switch from traditional travel controls with levers and pedals to joystick controls with a push of... Read more

BIG PERFORMANCE IN A MINI DESIGN

Increased lifting, swinging, travel and multi-functioning performance help you get the job done more efficiently, and blade float allows for easy clean up. Read more

SAFETY ON THE JOB SITE

Your safety is our top priority. The Cat mini excavator is designed to help keep you safe on the job. A back-up camera, courtesy work lights and a fluorescent retractable... Read more

SIMPLE SERVICE FOR LESS DOWNTIME

Maintenance is quick and easy on the Cat mini excavator. Routine check points are easy to access at ground level with grouped service points and robust service panels. Read more

LOWER OPERATING COSTS

Equipped with features such as auto idle, auto engine shutdown, and efficient hydraulics with a variable displacement pump, the Cat mini excavator was designed with reduc... Read more

UNMATCHED DEALER SUPPORT

Your Cat dealer is here to help you reach your business goals. From providing equipment solutions to operator training to service needs and beyond, your Cat dealer is rea... Read more

SUSTAINABILITY

The Cat® C3.3B engine meets U.S. EPA Tier 4 Final, EU Stage V, and Japan 2014 emission standards.Cat diesel engines are required to use ULSD (ultra-low sulfur diesel fuel... Read more

SPECIFICATIONS FOR 308 CR (Fixed Boom)

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Engine
Net Power 51.8 kW
Displacement 3.33 l
Net Power - 2,200 rpm - ISO 9249:2007, 80/1269/EEC 51.8 kW
Bore 94 mm
Stroke 120 mm
Engine Model - U.S. EPA Tier 4 Final/EU Stage V Cat® C3.3B
Gross Power - SAE J1995:2014 55.4 kW
Weights
Operating Weight 8025 kg
Minimum Operating Weight with Cab* 7330 kg
Maximum Operating Weight with Cab** 8025 kg
Note (1) *Minimum Weight is based on rubber tracks, no counterweight, operator, full fuel tank, standard stick, blade and no bucket.
Note (2) **Maximum Weight is based on steel tracks with rubber pads, counterweight, operator, full fuel tank, long stick, blade and no bucket.
Weight Increase from Minimum Configuration
Steel Tracks with Pads 300 kg
Long Stick 85 kg
Counterweight 250 kg
Travel System
Ground Pressure - Maximum Weight 35 kPa
Travel Speed - Low 3 km/h
Travel Speed - High 4.9 km/h
Maximum Traction Force - Low Speed 71 kN
Ground Pressure - Minimum Weight 32.1 kPa
Maximum Traction Force - High Speed 29.3 kN
Gradeability - Maximum 30 degrees
Service Refill Capacities
Engine Oil 11.2 l
Cooling System 10 l
Hydraulic Tank 53 l
Hydraulic System 110 l
Fuel Tank 145 l
Hydraulic System
Digging Force - Stick - Long 36.7 kN
Operating Pressure - Swing 250 bar
Maximum Auxiliary Circuit - Secondary - Pressure at Pump 285 bar
Type Load Sensing Hydraulics with Variable Displacement Piston Pump
Digging Force - Stick - Standard 41.3 kN
Maximum Auxiliary Circuit - Primary - Pressure at Pump 285 bar
Maximum Auxiliary Circuit - Primary - Flow at Pump 131 l/min
Operating Pressure - Equipment 285 bar
Pump Flow at 2,400 rpm 167 l/min
Maximum Auxiliary Circuit - Secondary - Flow at Pump 33 l/min
Operating Pressure - Travel 285 bar
Note Flow and pressure are not combinable. Under load, as flow rises pressure goes down.
Digging Force - Bucket 58.9 kN
Swing System
Machine Swing Speed 10.6 r/min
Blade
Height 431 mm
Width - Standard 2300 mm
Width - Wide 2450 mm
Certification - Cab
Top Guard ISO 10262:1998 (Level I)
Tip Over Protective Structure (TOPS) ISO 12117:1997
Roll Over Protective Structure (ROPS) ISO 12117-2:2008
Sound
Average Exterior Sound Pressure (ISO 6395:2008) 99 dB(A)
Operator Sound Pressure (ISO 6396:2008) 72 dB(A)
Note European Union Directive "2000/14/EC"
Dimensions - Standard Stick
Swing Bearing - Height 756 mm
Height - Boom Working - With Tools** 2671 mm
Ground Clearance 350 mm
Boom In Reach 1681 mm
O/A Track Width 2300 mm
Height - Boom Transport - No Tools* 2466 mm
Maximum Dig Height 7392 mm
Note (2) **Boom Height when stick is pinned in working position with attachments. Standard Stick offers only one pin position.
Maximum Reach 6391 mm
Tail Swing with Counterweight 1425 mm
Maximum Blade Height 370 mm
Vertical Wall 3600 mm
Dig Depth 4145 mm
Overall Shipping Length - with Counterweight 5780 mm
Note (1) *Boom Height when stick is pinned in transport position with no attachments.
Maximum Blade Depth 407 mm
Tail Swing without Counterweight 1290 mm
Overall Shipping Length - without Counterweight 5645 mm
Cab Height 2541 mm
Maximum Reach - Ground Level 6246 mm
Maximum Dump Clearance 5255 mm
Track Belt/Shoe Width 450 mm
Stick Length 1665 mm
O/A Undercarriage Length 2880 mm
Dimensions - Long Stick
Dig Depth 4687 mm
Stick Length 2208 mm
O/A Track Width 2300 mm
Maximum Blade Depth 407 mm
O/A Undercarriage Length 2880 mm
Overall Shipping Length - without Counterweight 5665 mm (223 in)***
Maximum Blade Height 370 mm
Cab Height 2541 mm
Maximum Dump Clearance 5672 mm
Height - Boom Transport - No Tools* 2540 mm
Overall Shipping Length - with Counterweight 5800 mm (228 in)***
Ground Clearance 350 mm
Boom In Reach 2250 mm
Tail Swing with Counterweight 1425 mm
Maximum Dig Height 7809 mm
Note *Boom Height when stick is pinned in transport position with no attachments.
Maximum Reach 6900 mm
Height - Boom Working - With Tools** 3080 mm
Swing Bearing - Height 756 mm
Vertical Wall 4110 mm
Maximum Reach - Ground Level 6766 mm
Note (2) ***With blade positioned at the rear of the machine.
Track Belt/Shoe Width 450 mm
Tail Swing without Counterweight 1290 mm
Note (1) **Boom Height when stick is pinned in working position with attachments. Standard Stick offers only one pin position.
Air Conditioning System
Air Conditioning The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a (Global Warming Potential = 1430). The system contains 1.0 kg of refrigerant which has a CO2 equivalent of 1.430 metric tonnes.
Sustainability
Recyclability 96%

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