308 CR
308 CR Mini Hydraulic Excavator
The 308 CR Mini Excavator delivers power and performance in an 8 ton size class to help you work in a wide range of applications.
308 CR
308 CR
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.
- Specifications
- Standard / Optional Features
- Long Name -308 CR Mini Hydraulic Excavator
- Name -308 CR
- Brand -Caterpillar
- Status -Current
- Net Power - 69.5 hp / 51.8 kW
- Engine Model - Cat C3.3B
- Stroke - 4.7 in / 120 mm
- Bore - 3.7 in / 94 mm
- Gross Power - SAE J1995:2014 - 74.3 hp / 55.4 kW
- Displacement - 203 in³ / 3.33 l
- Rated Net Power - 2,200 rpm - U.S. EPA Tier 4 Final/EU Stage V - ISO 9249/EEC 80/1269 - 69.5 hp / 51.8 kW
- Operating Weight - 18493 lb / 8387 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.
- Maximum Operating Weight with Cab** - 18493 lb / 8387 kg
- Minimum Operating Weight with Cab* - 16542 lb / 7502 kg
- Steel Tracks with Pads - 752 lb / 341 kg
- Counterweight - 552 lb / 250 kg
- Long Stick - 146 lb / 66 kg
- Maximum Traction Force - High Speed - 6250 lbf / 27.8 kN
- Ground Pressure - Maximum Weight - 5.5 psi / 37.6 kPa
- Ground Pressure - Minimum Weight - 4.9 psi / 33.8 kPa
- Travel Speed - High - 3.2 mile/h / 5.1 km/h
- Travel Speed - Low - 1.9 mile/h / 3.1 km/h
- Maximum Traction Force - Low Speed - 15175 lbf / 67.5 kN
- Gradeability - Maximum - 30 degrees
- Fuel Tank - 39 gal (US) / 147 l
- Hydraulic System - 29 gal (US) / 110 l
- Hydraulic Tank - 14 gal (US) / 53 l
- Cooling System - 2.6 gal (US) / 10 l
- Engine Oil - 3 gal (US) / 11.2 l
- Digging Force - Bucket - 13946 lbf / 62 kN
- Operating Pressure - Travel - 4134 psi / 285 bar
- Operating Pressure - Swing - 3626 psi / 250 bar
- Operating Pressure - Equipment - 4134 psi / 285 bar
- Digging Force - Stick - Long - 8032 lbf / 35.7 kN
- Type - Load Sensing Hydraulics with Variable Displacement Piston Pump
- Note - Flow and pressure are not combinable. Under load, as flow rises pressure goes down.
- Pump Flow at 2,400 rpm - 44 gpm / 167 L/min
- Digging Force - Stick - Standard - 9509 lbf / 42.3 kN
- Maximum Auxiliary Circuit - Primary - Pressure at Pump - 4134 psi / 285 bar
- Maximum Auxiliary Circuit - Secondary - Pressure at Pump - 4134 psi / 285 bar
- Maximum Auxiliary Circuit - Primary - Flow at Pump - 35 gpm / 131 L/min
- Maximum Auxiliary Circuit - Secondary - Flow at Pump - 9 gpm / 33 L/min
- Machine Swing Speed - 10.6 r/min / 10.6 r/min
- Boom Swing - Right - 50 degrees
- Boom Swing - Left - 60 degrees
- Height - 17 in / 431 mm
- Width - Standard - 90.6 in / 2300 mm
- Width - Wide - 96.5 in / 2450 mm
- Top Guard - ISO 10262:1998 (Level I)
- Roll Over Protective Structure (ROPS) - ISO 12117-2:2008
- Operator Sound Pressure (ISO 6396:2008) - 72 dB(A) / 72 dB(A)
- Note - European Union Directive "2000/14/EC"
- Average Exterior Sound Pressure (ISO 6395:2008) - 99 dB(A) / 99 dB(A)
- Cab Height - 100 in / 2541 mm
- Vertical Wall - 117.8 in / 2991 mm
- Boom In Reach - 120.4 in / 3059 mm
- Tail Swing with Counterweight - 62.4 in / 1585 mm
- Boom Swing - Right - 36.8 in / 935 mm
- Track Belt/Shoe Width - 17.7 in / 450 mm
- Maximum Reach - 281.1 in / 7141 mm
- Stick Length - 71.7 in / 1820 mm
- Maximum Blade Height - 14.6 in / 370 mm
- Boom Swing - Left - 23.8 in / 604 mm
- Maximum Blade Depth - 16 in / 407 mm
- O/A Track Width - 90.6 in / 2300 mm
- Maximum Dig Height - 265.2 in / 6736 mm
- Maximum Dump Clearance - 187.4 in / 4760 mm
- Maximum Reach - Ground Level - 273.6 in / 6949 mm
- Tail Swing without Counterweight - 57.1 in / 1450 mm
- O/A Undercarriage Length - 113.4 in / 2880 mm
- Swing Bearing - Height - 29.7 in / 756 mm
- Ground Clearance - 13.8 in / 350 mm
- Dig Depth - 161.7 in / 4108 mm
- Note - *Boom Height when stick is pinned in transport position with no attachments.
- Overall Shipping Length - with Counterweight - 264 in / 6706 mm
- Note (1) - **Boom Height when stick is pinned in working position with attachments. Standard Stick offers only one pin position.
- Overall Shipping Length - without Counterweight - 258.8 in / 6574 mm
- Note (2) - ***With blade positioned at the rear of the machine.
- Height - Boom Working - With Tools** - 104.7 in / 2660 mm
- Height - Boom Transport - No Tools* - 95.7 in / 2430 mm
- Dig Depth - 182.8 in / 4643 mm
- Boom Swing - Left - 23.8 in / 604 mm
- Maximum Dig Height - 277.1 in / 7039 mm
- Maximum Blade Height - 14.6 in / 370 mm
- Track Belt/Shoe Width - 17.7 in / 450 mm
- Cab Height - 100 in / 2541 mm
- Tail Swing with Counterweight - 62.4 in / 1585 mm
- O/A Undercarriage Length - 113.4 in / 2880 mm
- Maximum Dump Clearance - 199.7 in / 5072 mm
- Boom Swing - Right - 36.8 in / 935 mm
- Maximum Blade Depth - 16 in / 407 mm
- Ground Clearance - 13.8 in / 350 mm
- Stick Length - 92.8 in / 2358 mm
- Maximum Reach - 300.7 in / 7637 mm
- Maximum Reach - Ground Level - 293.7 in / 7460 mm
- Boom In Reach - 126.6 in / 3215 mm
- Swing Bearing - Height - 29.7 in / 756 mm
- O/A Track Width - 90.6 in / 2300 mm
- Tail Swing without Counterweight - 57.1 in / 1450 mm
- Vertical Wall - 134 in / 3404 mm
- 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* - 89 in / 2260 mm
- Height - Boom Working - With Tools** - 120.1 in / 3050 mm
- Overall Shipping Length - without Counterweight - 6872 mm (270.6 in)***
- Overall Shipping Length - with Counterweight - 6872 mm (270.6 in)***
- 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.
- Recyclability - 96%
Standard Equipment
- engine
- Cat C3.3B Diesel Engine (U.S. EPA Tier 4 Final/EU Stage V) – Electronic Engine, Turbo, Diesel Particulate Filter (DPF)
- Automatic Engine Idle
- Automatic Engine Shutdown
- Automatic Swing Brake
- Automatic Two Speed Travel
- Fuel Water Separator with Indicator
- Radial Seal – Double Element Air Filter
- Extended Life Coolant, –37° C (–35° F)
- hydraulics
- Electronic Variable Displacement Piston Pump
- Load Sensing/Flow Sharing Hydraulics
- Power On Demand
- Hydraulic Temperature Monitoring
- Certified Accumulator
- HYDO Advanced Hydraulic Oil
- operator environment
- Top Guard ISO 10262 1998 Level I
- ROPS ISO 12117-2:2008
- Stick Steer Mode
- Travel Cruise Control
- Control Pattern Changer
- Adjustable Wrist Rests
- Molded Footrests
- Removable, Washable Floor Mat
- Travel Pedals and Hand Levers
- Cat Key with Passcode Option
- HVAC with Automatic Temperature Control
- Hydraulic Lockout Controls
- Integrated Lower Front Window
- Assisted Front Window Overhead Storage
- Rear Window Emergency Exit
- Fabric, High Back, Suspension Seat
- Retractable Seat Belt (75 mm/3 in)
- Coat Hook
- Cup Holder
- LED Interior Light
- Literature Holder
- Mounting Bosses for Top and Front Guards
- 12V Power Socket
- Radio – Bluetooth, Auxiliary, Microphone, USB (charging only)
- Skylight
- Signaling/Warning Horn
- Cab and (left side) Boom Work Lights
- Utility Space for Mobile Phone
- Next Generation Color LCD Monitor (IP66)
– Jog Dial Interface
– Fuel Level and Coolant Temperature Gauges
– Maintenance and Machine Monitoring
– Performance and Machine Adjustments
– Numeric Security Code
– Multiple Languages
– Camera Ready (IP68 & IP69K)
– Hour Meter with Wake Up Switch
- undercarriage
- Greased and Lubricated Track
- Tie Down Eyes on Track Frame
- Dozer Blade
- Dozer Float
- Bolt-on, Reversible Wear Edge
- boom, stick and linkages
- One Piece Boom (3400 mm/133.9 in)
- Standard Stick (1820 mm/71.7 in)
- Front Shovel Capable – Pin-on/Manual Coupler/Hydraulic Coupler (not available in all regions)
- Thumb Ready (not available in all regions)
- electrical
- 12 Volt Electrical System
- 60 Ampere Alternator
- Circuit Breaker
- 900 CCA Maintenance Free Battery
- Battery Disconnect
- Ignition Key Stop Switch
- other
- Locks on External Enclosure Doors
- Lockable Fuel Cap
- Beacon Socket
- Rear Reflectors
- technology
- Product Link Basic
Optional Equipment
- operator environment
- Push to Start with Bluetooth® Key
- Air Suspension Heated Seat
- Rain Visor
- Next Generation Advanced Monitor (below are all included with Next Generation Advanced Monitor option)
– Touch Screen
– Site Reference System
– High Definition Camera Capable (IP68 & IP69K)
– Numeric Security Code
- undercarriage
- Wide Dozer Blade
- Steel Tracks (450 mm/17.7 in wide)
- Wide Steel Tracks (600 mm/23.6 in)
- Steel Track with Rubber Pads
- Track Guides
- boom, stick and linkages
- Long Stick (2360 mm/92.9 in)
- Attachments including Buckets, Augers and Hammers
- 2nd Auxiliary Hydraulic Lines
- Boom Lowering Check Valve
- Stick Lowering Check Valve
- Certified Lifting Eye
- electrical
- Product Link™ Elite (regulations apply)
- Travel Alarm
- Rearview Camera
- Rotating Beacon
- guarding
- Mesh Front Guard ISO 10262 1998 Level I
- Heavy Duty Front Guard ISO 10262 1998 Level II
- Overhead Cab Guard ISO 10262 1998 Level II
- Polycarbonate Front Window EN356 P5A
- Track Guards
- other
- Additional Counterweight
- Water Jacket Heater
- Refueling Pump
- Variable Angle Boom (refer to 308 CR VAB brochure for VAB specs and additional information)
- technology
- Ease of Use Indicate
- Ease of Use E-Fence
- Cat Grade Advanced 2D
- Cat Grade 3D
- Product Link Elite (regulations apply)
Width
47.2 in / 1200 mm
Capacity
14.5 yd³ / 410.6 m³
Weight
615.3 lb / 279.1 kg
Width
48 in / 1219 m
Capacity
11.6 ft³ / 328.79 l
Weight
477.1 lb / 216.39 kg
Width
54 in / 1372 mm
Capacity
13.2 ft³ / 374.6 l
Weight
517 lb / 234.5 kg
Width
59.1 in / 1500 mm
Capacity
18.4 ft³ / 521 l
Weight
761.9 lb / 345.6 kg
Width
60 in / 1524 mm
Capacity
14.8 ft³ / 420.5 l
Weight
557.1 lb / 252.69 kg
Width
11.8 in / 300 mm
Capacity
3.4 ft³ / 96 l
Weight
249.1 lb / 113 kg
Width
13 in / 330 cm
Capacity
3.5 ft³ / 99.09 l
Weight
299.8 lb / 136 kg
Width
16 in / 406 mm
Capacity
4.2 ft³ / 120 l
Weight
297.6 lb / 135 kg
Width
16 in / 406 mm
Capacity
5.7 ft³ / 160 l
Weight
337.3 lb / 153 kg
Width
18 in / 457 mm
Capacity
4.9 ft³ / 139 l
Weight
304.2 lb / 138 kg
Width
18 in / 457 mm
Capacity
5.3 ft³ / 150.1 l
Weight
332.9 lb / 151 kg
Width
18 in / 457 mm
Capacity
6.4 ft³ / 180 l
Weight
357.1 lb / 162 kg
Width
24 ft / 610 m
Capacity
8.1 ft³ / 229.39 l
Weight
427.7 lb / 194 kg
Width
24 in / 610 mm
Capacity
7.3 ft³ / 207 l
Weight
370.4 lb / 168 kg
Width
24 in / 610 mm
Capacity
8.1 yd³ / 229.39 m³
Weight
392.4 lb / 178 kg
Width
24 in / 610 mm
Capacity
9.2 ft³ / 260 l
Weight
427.7 lb / 194 kg
Width
30 in / 762 mm
Capacity
10.9 yd³ / 308.7 m³
Weight
491.6 lb / 223 kg
Width
30 in / 762 mm
Capacity
9.9 ft³ / 280 l
Weight
443.1 lb / 201 kg
Width
30 in / 762 mm
Capacity
10.9 yd³ / 308.7 m³
Weight
456.4 lb / 207 kg
Width
30 in / 762 mm
Capacity
12.7 ft³ / 360 l
Weight
489.4 lb / 222 kg
Weight
211.6 lb / 96 kg
Width
14.6 in / 370 mm
Length
23.4 in / 595 mm
Shank Length
33.9 in / 861 mm
Weight
235.9 lb / 107 kg
Overall Length
42 in / 1066.09 mm
Width
36 in / 914 mm
Capacity
12 ft³ / 340 l
Weight
509.3 lb / 231 kg
Width
36 in / 914 mm
Capacity
13.7 ft³ / 387.89 l
Weight
507.1 lb / 230 kg
Width
36 in / 914 mm
Capacity
16.2 ft³ / 460 l
Weight
560 lb / 254 kg
Drive Shaft Torque at Maximum Pressure
5034.6 lb/ft / 6826 N·m
Drive Method
Gerotor Motor - Double Planetary Reduction
Mounting Bracket Design
8 Ton Mini Excavator Pin On
Overall Width
40.4 in / 1026 mm
Working Width
32.2 in / 818 mm
Length
28.1 in / 714 mm
Overall Width
48.3 in / 1226 mm
Working Width
39.8 in / 1012 mm
Length
28.1 in / 714 mm
Working Width
39.4 in / 1000 mm
Required Hydraulics
Standard Flow
Overall Width
46.6 in / 1184 mm
