308 CR Mini Hydraulic Excavator
US
Metric
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
Net Power
69.50 hp
51.80 kW
Weights
Operating Weight
20077.00 lb
9105.00 kg
Dimensions - Long Stick
Dig Depth
182.80 in
4643.00 mm
Engine
Engine Model
Cat C3.3B
Blade
Height
17.00 in
431.00 mm
Dimensions - Long Stick
Boom Swing - Left
23.80 in
604.00 mm
Swing System
Machine Swing Speed
10.60 r/min
10.60 r/min
Dimensions - Long Stick
Maximum Dig Height
277.10 in
7039.00 mm
Hydraulic System
Digging Force - Bucket
13946.00 lb
62.00 kN
Operating Pressure - Travel
4134.00 psi
285.00 bar
Operating Pressure - Swing
3626.00 psi
250.00 bar
Dimensions - Standard Stick
Cab Height
100.00 in
2541.00 mm
Vertical Wall
117.80 in
2991.00 mm
Service Refill Capacities
Fuel Tank
39.00 gal (US)
147.00 l
Dimensions - Standard Stick
Boom In Reach
120.40 in
3059.00 mm
Engine
Stroke
4.70 in
120.00 mm
Hydraulic System
Operating Pressure - Equipment
4134.00 psi
285.00 bar
Dimensions - Standard Stick
Tail Swing with Counterweight
62.40 in
1585.00 mm
Hydraulic System
Digging Force - Stick - Long
8032.00 lb
35.70 kN
Dimensions - Long Stick
Maximum Blade Height
14.60 in
370.00 mm
Dimensions - Standard Stick
Boom Swing - Right
36.80 in
935.00 mm
Blade
Width - Standard
90.60 in
2300.00 mm
Engine
Rated Net Power - 2,200 rpm - U.S. EPA Tier 4 Final - ISO 9249/EEC 80/1269
70.30 HP
52.40 kW
Dimensions - Long Stick
Track Belt/Shoe Width
17.70 in
450.00 mm
Service Refill Capacities
Hydraulic System
29.00 gal (US)
110.00 l
Weights
Note (1)
*Minimum Weight is based on rubber tracks, no counterweight, operator, full fuel tank, standard stick, blade and no bucket.
Hydraulic System
Type
Load Sensing Hydraulics with Variable Displacement Piston Pump
Dimensions - Long Stick
Cab Height
100.00 in
2541.00 mm
Travel System
Maximum Traction Force - High Speed
6250.00 lb
27.80 kN
Dimensions - Standard Stick
Track Belt/Shoe Width
17.70 in
450.00 mm
Dimensions - Long Stick
Tail Swing with Counterweight
62.40 in
1585.00 mm
Dimensions - Standard Stick
Maximum Reach
281.10 in
7141.00 mm
Dimensions - Long Stick
O/A Undercarriage Length
113.40 in
2880.00 mm
Maximum Dump Clearance
199.70 in
5072.00 mm
Dimensions - Standard Stick
Stick Length
71.70 in
1820.00 mm
Engine
Bore
3.70 in
94.00 mm
Dimensions - Long Stick
Transport Height
99.00 in
2522.00 mm
Weight Increase from Minimum Configuration
Steel Tracks with Pads
752.00 lb
341.00 kg
Hydraulic System
Auxiliary Circuit - Primary - Pressure
4134.00 psi
285.00 bar
Auxiliary Circuit - Primary - Flow
35.00 gal/min
131.00 l/min
Blade
Width - Wide
96.50 in
2450.00 mm
Dimensions - Long Stick
Boom Swing - Right
36.80 in
935.00 mm
Maximum Blade Depth
16.00 in
407.00 mm
Dimensions - Standard Stick
Transport Height
98.00 in
2487.00 mm
Weights
Note (2)
**Maximum Weight is based on steel tracks with rubber pads, counterweight, operator, full fuel tank, long stick, blade and no bucket.
Dimensions - Standard Stick
Maximum Blade Height
14.60 in
370.00 mm
Weights
Maximum Operating Weight with Cab**
20077.00 lb
9105.00 kg
Dimensions - Standard Stick
Boom Swing - Left
23.80 in
604.00 mm
Hydraulic System
Pump Flow at 2,400 rpm
44.00 gal/min
167.00 l/min
Dimensions - Long Stick
Ground Clearance
13.80 in
350.00 mm
Dimensions - Standard Stick
Maximum Blade Depth
16.00 in
407.00 mm
Hydraulic System
Auxiliary Circuit - Secondary - Flow
9.00 gal/min
33.00 l/min
Service Refill Capacities
Hydraulic Tank
14.00 gal (US)
53.00 l
Dimensions - Standard Stick
O/A Track Width
90.60 in
2300.00 mm
Hydraulic System
Digging Force - Stick - Standard
9509.00 lb
42.30 kN
Travel System
Ground Pressure - Maximum Weight
5.80 psi
39.80 kPa
Dimensions - Long Stick
Stick Length
92.80 in
2358.00 mm
Weight Increase from Minimum Configuration
Counterweight
552.00 lb
250.00 kg
Dimensions - Long Stick
Maximum Reach
300.70 in
7637.00 mm
Maximum Reach - Ground Level
293.70 in
7460.00 mm
Dimensions - Standard Stick
Maximum Dig Height
265.20 in
6736.00 mm
Travel System
Ground Pressure - Minimum Weight
5.40 psi
36.90 kPa
Hydraulic System
Auxiliary Circuit - Secondary - Pressure
4134.00 psi
285.00 bar
Dimensions - Standard Stick
Maximum Dump Clearance
187.40 in
4760.00 mm
Travel System
Travel Speed - High
3.20 mile/h
5.10 km/h
Dimensions - Standard Stick
Maximum Reach - Ground Level
273.60 in
6949.00 mm
Engine
Displacement
203.00 in³
3.33 l
Certification - Cab
Top Guard
ISO 10262:1998 (Level I)
Roll Over Protective Structure (ROPS)
ISO 12117-2:2008
Dimensions - Standard Stick
Tail Swing without Counterweight
57.10 in
1450.00 mm
Service Refill Capacities
Cooling System
2.60 gal (US)
10.00 l
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.
Dimensions - Long Stick
O/A Shipping Length
262.00 in
6656.00 mm
Dimensions - Standard Stick
O/A Undercarriage Length
113.40 in
2880.00 mm
Dimensions - Long Stick
Boom In Reach
126.60 in
3215.00 mm
Sound
Operator Sound Pressure (ISO 6396:2008)
72.00 dB(A)
72.00 dB(A)
Weight Increase from Minimum Configuration
Long Stick
146.00 lb
66.00 kg
Dimensions - Long Stick
Swing Bearing - Height
29.70 in
756.00 mm
Travel System
Travel Speed - Low
1.90 mile/h
3.10 km/h
Dimensions - Long Stick
O/A Track Width
90.60 in
2300.00 mm
Service Refill Capacities
Engine Oil
3.00 gal (US)
11.20 l
Sound
Note
European Union Directive "2000/14/EC"
Engine
Rated Net Power - 2,200 rpm - EU Stage V - ISO 9249/EEC 80/1269
71.50 HP
53.30 kW
Gross Power - ISO 14396
74.30 HP
55.40 kW
Weights
Minimum Operating Weight with Cab*
18610.00 lb
8440.00 kg
Travel System
Maximum Traction Force - Low Speed
15175.00 lb
67.50 kN
Dimensions - Standard Stick
Swing Bearing - Height
29.70 in
756.00 mm
Sound
Average Exterior Sound Pressure (ISO 6395:2008)
99.00 dB(A)
99.00 dB(A)
Dimensions - Long Stick
Tail Swing without Counterweight
57.10 in
1450.00 mm
Travel System
Gradeability - Maximum
30 degrees
Swing System
Boom Swing - Right
50 degrees
Dimensions - Standard Stick
Ground Clearance
13.80 in
350.00 mm
Dig Depth
161.70 in
4108.00 mm
O/A Shipping Length
259.00 in
6571.00 mm
Dimensions - Long Stick
Vertical Wall
134.00 in
3404.00 mm
Certification - Cab
Tip Over Protective Structure (TOPS)
ISO 12117:1997
Swing System
Boom Swing - Left
60 degrees
Engine
Gross Power - SAE J1995
74.30 hp
55.40 kW
Rated Net Power - 2,200 rpm - U.S. EPA Tier 4 Final/EU Stage V - ISO 9249/EEC 80/1269
69.50 hp
51.80 kW
Hydraulic System
Note
Flow and pressure are not combinable. Under load, as flow rises pressure goes down.
Maximum Auxiliary Circuit - Primary - Pressure at Pump
4134.00 psi
285.00 bar
Maximum Auxiliary Circuit - Secondary - Pressure at Pump
4134.00 psi
285.00 bar
Maximum Auxiliary Circuit - Primary - Flow at Pump
35.00 gal/min
131.00 l/min
Maximum Auxiliary Circuit - Secondary - Flow at Pump
9.00 gal/min
33.00 l/min
Dimensions - Standard Stick
Note
*Boom Height when stick is pinned in transport position with no attachments.
Overall Shipping Length - with Counterweight
264.00 in
6706.00 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
258.80 in
6574.00 mm
Note (2)
***With blade positioned at the rear of the machine.
Height - Boom Working - With Tools**
104.70 in
2660.00 mm
Height - Boom Transport - No Tools*
95.70 in
2430.00 mm
Dimensions - Long Stick
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*
89.00 in
2260.00 mm
Height - Boom Working - With Tools**
120.10 in
3050.00 mm
Overall Shipping Length - without Counterweight
6872 mm (270.6 in)***
Overall Shipping Length - with Counterweight
6872 mm (270.6 in)***
Sustainability
Recyclability
96%
Features
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 day long.
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.
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 a button. The benefit of less effort and improved control is in your hands!
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.
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 seat belt are just a few of the safety features we’ve built into the machine.
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.
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 reducing your operating costs in mind.
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 ready to help.
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 with 15 ppm of sulfur or less) or ULSD blended with the following lower-carbon intensity fuels up to: 20% biodiesel FAME (fatty acid methyl ester) * or 100% renewable diesel, HVO (hydrotreated vegetable oil) and GTL (gas-to-liquid) fuels. Refer to guidelines for successful application. Please consult your Cat dealer or “Caterpillar Machine Fluids Recommendations” (SEBU6250) for details.
- Auto Idle helps reduce unnecessary fuel burn and greenhouse gas emissions by allowing the engine to automatically go into idle mode when the machine is not working.
- Engine Idle Shutdown Timer reduces fuel burn, greenhouse gas emissions and unnecessary idle time by shutting down the machine after a pre-set idling period.
- Cruise control helps you maintain a constant speed as you travel across your jobsite saving fuel and reducing greenhouse gas emissions.
- The Cat® Seat Belt Reminder provides audible and visual warnings to remind operators to buckle up during machine operation. The easy-to-install system is compatible with all equipment brands to help ensure operator safety.
- Extended maintenance intervals not only reduce downtime but decrease the amount of fluid and filters that are replaced over the life of the machine.
- Remote Flash minimizes downtime and maintenance time while keeping your asset running with maximum efficiency. Alerts for machine updates are sent virtually from your Cat dealer and updates can be deployed without a dealer technician needing to be onsite.(if equipped)
- Remote Troubleshoot decreases maintenance time and keeps your machine running with maximum efficiency by allowing your Cat dealer to virtually test the machine while working. Once a problem is identified, a technician can fix it the first time, saving time and money.(if equipped)
- Cat Grade with advanced 2D and 3D technologies combine advanced guidance with optional automated machine control helping you reach grading targets while reducing fuel burn and greenhouse gas emissions by improving efficiency, job site productivity, and accuracy. (if equipped).
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
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)