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308 CR Mini Hydraulic Excavator

308 CR Mini Hydraulic Excavator

At a Glance

Net Power
69.5 HP
Operating Weight
20077 lb
Dig Depth
182.8 in
Engine Model
Cat C3.3B
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Overview

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.

Engine

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Net Power 69.5HP
Engine Model Cat C3.3B
Rated Net Power - 2,200 rpm - U.S. EPA Tier 4 Final/EU Stage V - ISO 9249/EEC 80/1269 69.5HP
Gross Power - SAE J1995 74.3HP
Stroke 4.7in
Bore 3.7in
Displacement 203in³

Weights

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Operating Weight 20077lb
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.
Maximum Operating Weight with Cab** 20077lb
Minimum Operating Weight with Cab* 18610lb

Dimensions - Long Stick

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Dig Depth 182.8in
Boom Swing - Left 23.8in
Maximum Dig Height 277.1in
Maximum Blade Height 14.6in
Track Belt/Shoe Width 17.7in
Cab Height 100in
Tail Swing with Counterweight 62.4in
O/A Undercarriage Length 113.4in
Maximum Dump Clearance 199.7in
Boom Swing - Right 36.8in
Maximum Blade Depth 16in
Ground Clearance 13.8in
Stick Length 92.8in
Maximum Reach 300.7in
Maximum Reach - Ground Level 293.7in
Boom In Reach 126.6in
Swing Bearing - Height 29.7in
O/A Track Width 90.6in
Tail Swing without Counterweight 57.1in
Vertical Wall 134in
Note *Boom Height when stick is pinned in transport position with no attachments.
Note (2) ***With blade positioned at the rear of the machine.
Note (1) **Boom Height when stick is pinned in working position with attachments. Standard Stick offers only one pin position.
Height - Boom Transport - No Tools* 89in
Height - Boom Working - With Tools** 120.1in
Overall Shipping Length - without Counterweight 6872 mm (270.6 in)***
Overall Shipping Length - with Counterweight 6872 mm (270.6 in)***

Blade

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Height 17in
Width - Standard 90.6in
Width - Wide 96.5in

Dimensions - Standard Stick

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Height - Boom Transport - No Tools* 95.7in
Height - Boom Working - With Tools** 104.7in
Note (2) ***With blade positioned at the rear of the machine.
Overall Shipping Length - without Counterweight 258.8in
Note (1) **Boom Height when stick is pinned in working position with attachments. Standard Stick offers only one pin position.
Overall Shipping Length - with Counterweight 264in
Note *Boom Height when stick is pinned in transport position with no attachments.
Cab Height 100in
Vertical Wall 117.8in
Boom In Reach 120.4in
Tail Swing with Counterweight 62.4in
Boom Swing - Right 36.8in
Track Belt/Shoe Width 17.7in
Maximum Reach 281.1in
Stick Length 71.7in
Maximum Blade Height 14.6in
Boom Swing - Left 23.8in
Maximum Blade Depth 16in
O/A Track Width 90.6in
Maximum Dig Height 265.2in
Maximum Dump Clearance 187.4in
Maximum Reach - Ground Level 273.6in
Tail Swing without Counterweight 57.1in
O/A Undercarriage Length 113.4in
Swing Bearing - Height 29.7in
Ground Clearance 13.8in
Dig Depth 161.7in

Hydraulic System

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Maximum Auxiliary Circuit - Secondary - Flow at Pump 9gal/min
Maximum Auxiliary Circuit - Primary - Flow at Pump 35gal/min
Maximum Auxiliary Circuit - Secondary - Pressure at Pump 4134psi
Maximum Auxiliary Circuit - Primary - Pressure at Pump 4134psi
Note Flow and pressure are not combinable. Under load, as flow rises pressure goes down.
Digging Force - Bucket 13946lb
Operating Pressure - Travel 4134psi
Operating Pressure - Swing 3626psi
Operating Pressure - Equipment 4134psi
Digging Force - Stick - Long 8032lb
Type Load Sensing Hydraulics with Variable Displacement Piston Pump
Pump Flow at 2,400 rpm 44gal/min
Digging Force - Stick - Standard 9509lb

Swing System

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Machine Swing Speed 10.6r/min
Boom Swing - Right 50 degrees
Boom Swing - Left 60 degrees

Service Refill Capacities

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Fuel Tank 39gal (US)
Hydraulic System 29gal (US)
Hydraulic Tank 14gal (US)
Cooling System 2.6gal (US)
Engine Oil 3gal (US)

Travel System

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Maximum Traction Force - High Speed 6250lb
Ground Pressure - Maximum Weight 5.8psi
Ground Pressure - Minimum Weight 5.4psi
Travel Speed - High 3.2mile/h
Travel Speed - Low 1.9mile/h
Maximum Traction Force - Low Speed 15175lb
Gradeability - Maximum 30 degrees

Weight Increase from Minimum Configuration

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Steel Tracks with Pads 752lb
Counterweight 552lb
Long Stick 146lb

Certification - Cab

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Top Guard ISO 10262:1998 (Level I)
Roll Over Protective Structure (ROPS) ISO 12117-2:2008
Tip Over Protective Structure (TOPS) ISO 12117:1997

Air Conditioning System

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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.

Sound

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Operator Sound Pressure (ISO 6396:2008) 72dB(A)
Note European Union Directive "2000/14/EC"
Average Exterior Sound Pressure (ISO 6395:2008) 99dB(A)