308 CR Mini Excavator
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.
Net Power
69.5 HP
Engine Model
Cat C3.3B
Stroke
4.7 in
DOWNLOAD TECHNICAL SPECIFICATIONS
Specification
Value
Net Power
69.5 HP
Engine Model
Cat C3.3B
Stroke
4.7 in
Bore
3.7 in
Gross Power - SAE J1995
74.3 HP
Displacement
203 in³
Rated Net Power - 2,200 rpm - U.S. EPA Tier 4 Final/EU Stage V - ISO 9249/EEC 80/1269
69.5 HP
Specification
Value
Operating Weight
20077 lb
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**
20077 lb
Minimum Operating Weight with Cab*
18610 lb
Specification
Value
Steel Tracks with Pads
752 lb
Counterweight
552 lb
Long Stick
146 lb
Specification
Value
Maximum Traction Force - High Speed
6250 lb
Ground Pressure - Maximum Weight
5.8 psi
Ground Pressure - Minimum Weight
5.4 psi
Travel Speed - High
3.2 mile/h
Travel Speed - Low
1.9 mile/h
Maximum Traction Force - Low Speed
15175 lb
Gradeability - Maximum
30 degrees
Specification
Value
Fuel Tank
39 gal (US)
Hydraulic System
29 gal (US)
Hydraulic Tank
14 gal (US)
Cooling System
2.6 gal (US)
Engine Oil
3 gal (US)
Specification
Value
Digging Force - Bucket
13946 lb
Operating Pressure - Travel
4134 psi
Operating Pressure - Swing
3626 psi
Operating Pressure - Equipment
4134 psi
Digging Force - Stick - Long
8032 lb
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 gal/min
Digging Force - Stick - Standard
9509 lb
Maximum Auxiliary Circuit - Primary - Pressure at Pump
4134 psi
Maximum Auxiliary Circuit - Secondary - Pressure at Pump
4134 psi
Maximum Auxiliary Circuit - Primary - Flow at Pump
35 gal/min
Maximum Auxiliary Circuit - Secondary - Flow at Pump
9 gal/min
Specification
Value
Machine Swing Speed
10.6 r/min
Boom Swing - Right
50 degrees
Boom Swing - Left
60 degrees
Specification
Value
Height
17 in
Width - Standard
90.6 in
Width - Wide
96.5 in
Specification
Value
Top Guard
ISO 10262:1998 (Level I)
Roll Over Protective Structure (ROPS)
ISO 12117-2:2008
Tip Over Protective Structure (TOPS)
ISO 12117:1997
Specification
Value
Operator Sound Pressure (ISO 6396:2008)
72 dB(A)
Note
European Union Directive "2000/14/EC"
Average Exterior Sound Pressure (ISO 6395:2008)
99 dB(A)
Specification
Value
Cab Height
100 in
Vertical Wall
117.8 in
Boom In Reach
120.4 in
Tail Swing with Counterweight
62.4 in
Boom Swing - Right
36.8 in
Track Belt/Shoe Width
17.7 in
Maximum Reach
281.1 in
Stick Length
71.7 in
Maximum Blade Height
14.6 in
Boom Swing - Left
23.8 in
Maximum Blade Depth
16 in
O/A Track Width
90.6 in
Maximum Dig Height
265.2 in
Maximum Dump Clearance
187.4 in
Maximum Reach - Ground Level
273.6 in
Tail Swing without Counterweight
57.1 in
O/A Undercarriage Length
113.4 in
Swing Bearing - Height
29.7 in
Ground Clearance
13.8 in
Dig Depth
161.7 in
Note
*Boom Height when stick is pinned in transport position with no attachments.
Overall Shipping Length - with Counterweight
264 in
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
Note (2)
***With blade positioned at the rear of the machine.
Height - Boom Working - With Tools**
104.7 in
Height - Boom Transport - No Tools*
95.7 in
Specification
Value
Dig Depth
182.8 in
Boom Swing - Left
23.8 in
Maximum Dig Height
277.1 in
Maximum Blade Height
14.6 in
Track Belt/Shoe Width
17.7 in
Cab Height
100 in
Tail Swing with Counterweight
62.4 in
O/A Undercarriage Length
113.4 in
Maximum Dump Clearance
199.7 in
Boom Swing - Right
36.8 in
Maximum Blade Depth
16 in
Ground Clearance
13.8 in
Stick Length
92.8 in
Maximum Reach
300.7 in
Maximum Reach - Ground Level
293.7 in
Boom In Reach
126.6 in
Swing Bearing - Height
29.7 in
O/A Track Width
90.6 in
Tail Swing without Counterweight
57.1 in
Vertical Wall
134 in
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
Height - Boom Working - With Tools**
120.1 in
Overall Shipping Length - without Counterweight
6872 mm (270.6 in)***
Overall Shipping Length - with Counterweight
6872 mm (270.6 in)***
Specification
Value
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.
Specification
Value
Recyclability
96%
  • 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.
  • Controls are easy to use and the intuitive Next Generation Monitor provides customizable machine operator preferences and easy to read machine information.
  • 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!
  • Increased lifting, swinging, travel and multi-functioning performance help you get the job done more efficiently, and blade float allows for easy clean up.
  • 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‚Äôve built into the machine.
  • 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.
  • 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.
  • 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.
  • 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).
*Engines with no aftertreatment devices can use higher blends, up to 100% biodiesel. (for use of blends higher than 20% biodiesel, consult your Cat dealer)