Cat Mini Excavators 308E2 CR
Product Feature
QUALITY
The durable hoods and frame and the compact radius design of the 308E2 CR let you work comfortably and confidently in confined areas.
The operator environment includes a high quality suspension seat, easy to adjust armrests and 100% pilot controls which offer consistent and long-lasting controllability.
EFFICIENCY
High Definition Hydraulic System provides a load sensing and flow sharing capability leading to operational precision, efficient performance and greater controllability.
Power on Demand provides optimal efficiency and performance the moment you need it. This automatic system ensures fuel efficiency through appropriate engine rating to meet all operational needs as required.
VERSATILITY
Broad range of Cat Work Tools make the Cat Mini Excavator a versatile machine, able to meet the requirements of any job site.
180 degrees of bucket rotation provides greater material retention during truck loading and easier flat wall digging without having to reposition the machine.
PERFORMANCE
Front shovel bucket orientation provides the operator with more ways to get the job done faster.
COMPASS Control Panel is a standard feature that allows the operator to easily adjust auxiliary flows to achieve the optimal work tool performance, activate auto idle for improved fuel efficiency and utilize the security system to ensure protection of valuable assets with the simple touch of a button.
The Site Reference System included in the COMPASS monitor provides output from pitch and roll sensors to aid in grading and level trenching. This impacts accuracy and productivity for job site finishing.
Rearview camera improves operator productivity and efficiency through increased visibility, making work easier to complete.
SERVICEABILITY
Convenient service and maintenance requirements include ease of access to daily check points, 500 hour engine oil and filter change period, 500 hour grease interval on front implement, S·O·SSM oil sampling valve and overall long term durability.
SAFETY
All Cat Mini Excavators from 3.5 metric tons to 8 metric tons are ROPS, TOPS and Top Guard Level II certified and include the Cat Interlock (hydraulic lockout) System, a certified accumulator which allows for auxiliary pressure to be released, making connecting and disconnecting work tools safer and easier, and a travel alarm. All of these safety features are standard on the E2 model lineup (travel alarm optional in Europe).
Product Parameter
Overview
The Cat® 308E2 CR Mini Hydraulic Excavator delivers high performance, durability and versatility in a compact design to help you work in a variety of applications.
Engine
Units:
| Engine Model | Cat® C3.3B | Cat® C3.3B |
| Net Power | 65.0 HP | 48.5 kW |
| Bore | 3.7 in | 94.0 mm |
| Displacement | 203.2 in³ | 3.33 l |
| Gross Power - ISO 14396 | 66.6 HP | 49.7 kW |
| Net Power - ISO 9249 | 65.0 HP | 48.5 kW |
| Rated Net Power - 2,400 rpm - ISO 9249/EEC 80/1269 | 65.0 HP | 48.5 kW |
| Stroke | 4.7 in | 120.0 mm |
| Emissions | Meets U.S. EPA Tier 4 Final and EU Stage IIIB emission standards. | Meets U.S. EPA Tier 4 Final and EU Stage IIIB emission standards. |
Weights
| Operating Weight | 18519.0 lb | 8400.0 kg |
| Operating Weight - With Cab | 18519.0 lb | 8400.0 kg |
| Note (1) | Weight with rubber tracks, bucket, operator (75 kg/165 lb), full fuel and auxiliary lines. | Weight with rubber tracks, bucket, operator (75 kg/165 lb), full fuel and auxiliary lines. |
| Note (2) | Weight varies depending on machine configuration. | Weight varies depending on machine configuration. |
Travel System
| Ground Pressure | 5.26 psi | 36.3 kPa |
| Gradeability - Maximum | 30° | 30° |
| Maximum Traction Force - High Speed | 8408.0 lb | 37.4 kN |
| Maximum Traction Force - Low Speed | 14500.0 lb | 64.5 kN |
| Travel Speed - High | 3.17 mile/h | 5.1 km/h |
| Travel Speed - Low | 1.74 mile/h | 2.8 km/h |
| Note (1) | Each track is driven by one independent 2-speed motor. | Each track is driven by one independent 2-speed motor. |
| Note (2) | Drive modules are integrated into the roller frame for total protection. | Drive modules are integrated into the roller frame for total protection. |
| Note (3) | Straight line travel when tracking and operating the front linkage simultaneously. | Straight line travel when tracking and operating the front linkage simultaneously. |
Hydraulic System
| Auxiliary Circuit - Primary (280 bar/4,061 psi) | 33.8 gal/min | 128.0 l/min |
| Auxiliary Circuit - Secondary (280 bar/4,061 psi) | 16.9 gal/min | 64.0 l/min |
| Digging Force - Bucket | 13534.0 lb | 60.2 kN |
| Digging Force - Stick - Long | 7891.0 lb | 35.1 kN |
| Digging Force - Stick - Standard | 9015.0 lb | 40.1 kN |
| Operating Pressure - Equipment | 4061.0 psi | 28000.0 kPa |
| Operating Pressure - Swing | 3481.0 psi | 24000.0 kPa |
| Operating Pressure - Travel | 4061.0 psi | 28000.0 kPa |
| Pump Flow at 2,000 rpm | 39.6 gal/min | 150.0 l/min |
| Note | Load sensing hydraulics with variable displacement piston pump. | Load sensing hydraulics with variable displacement piston pump. |
Swing System
| Machine Swing Speed | 11.0 r/min | 11.0 r/min |
| Boom Swing - Left | 60° | 60° |
| Boom Swing - Right | 50° | 50° |
| Note | Automatic swing break, spring applied, hydraulic release. | Automatic swing break, spring applied, hydraulic release. |
Blade
| Width | 91.3 in | 2320.0 mm |
| Height | 17.7 in | 450.0 mm |
| Dig Depth | 14.2 in | 360.0 mm |
| Lift Height | 15.0 in | 380.0 mm |
Service Refill Capacities
| Cooling System | 3.7 gal (US) | 14.0 l |
| Engine Oil | 3.0 gal (US) | 11.2 l |
| Hydraulic Tank | 21.7 gal (US) | 82.0 l |
| Fuel Tank | 33.0 gal (US) | 125.0 l |
| Hydraulic System | 24.8 gal (US) | 94.0 l |
Operating Specifications
| Counterweight | 551.0 lb | 251.0 kg |
| Machine Overhang | 11.0 in | 279.4 mm |
| Machine Overhang with Counterweight | 16.0 in | 406.0 mm |
| Maximum Dig Depth | 13.62 ft | 4150.0 mm |
| Stick Length - Long | 7.25 ft | 2210.0 mm |
| Stick Length - Standard | 5.5 ft | 1670.0 mm |
Cab
| Average Exterior Sound Pressure | 99 dB(A) ISO 6395 – Dynamic Test | 99 dB(A) ISO 6395 – Dynamic Test |
| Dynamic Operator Sound Pressure | 70 dB(A) ISO 6396 | 70 dB(A) ISO 6396 |
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 1.3 kg (2.9 lb) of refrigerant which has a CO2 equivalent of 1.9 metric tonnes (4,189 lb). | The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a (Global Warming Potential = 1430). The system contains 1.3 kg (2.9 lb) of refrigerant which has a CO2 equivalent of 1.9 metric tonnes (4,189 lb). |
