305.5E2 CR Mini Hydraulic Excavator

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The Cat® 305.5E2 CR Mini Hydraulic Excavator delivers high performance, durability and versatility in a compact design to help you work in a variety of applications.

Engine

Net Power
44.1 HP
Engine Model
Cat® C2.4
Net Power - 2,200 rpm - ISO 9249/EEC 80/1269
44.1 HP
Bore
3.4 in
Gross Power - ISO 14396
45.7 HP
Displacement
146 in³
Stroke
4 in
Emissions
Meets U.S. EPA Tier 4 Final/EU Stage IIIA emission standards.

Weights*

Operating Weight
11958 lb
Weight - Canopy, Standard Stick
11503 lb
Weight - Canopy, Long Stick
11596 lb
Weight - Cab, Standard Stick
11863 lb
Weight - Cab, Long Stick
11958 lb
Note
*Weight includes counterweight, rubber tracks, bucket, operator, full fuel and auxiliary lines.

Dimensions - Long Stick

Dig Depth
152 in
Maximum Blade Height
16 in
Maximum Reach
243 in
Maximum Reach - Ground Level
237 in
O/A Shipping Height
100 in
O/A Shipping Length
215 in
Vertical Wall
107 in
Track Belt/Shoe Width
16 in
Tail Swing
44 in
Swing Bearing - Height
24 in
Maximum Blade Depth
22 in
Boom Swing - Right
31 in
Boom Swing - Left
27 in
Boom In Reach
100 in
Boom Height - Shipping Position
85 in
O/A Undercarriage Length
102 in
O/A Track Width
78 in
Maximum Dump Clearance
161 in
Maximum Dig Height
220 in

Swing System

Machine Swing Speed
10 r/min
Boom Swing - Left - With Stop*
60°
Boom Swing - Left - Without Stop*
80°
Boom Swing - Right
50°
Note
*Automatic swing brake, spring applied, hydraulic release.

Blade

Width
78 in
Height
14.8 in
Dig Depth
21.9 in
Lift Height
15.9 in

Dimensions - Standard Stick

O/A Shipping Length
210 in
O/A Shipping Height
100 in
Maximum Reach - Ground Level
222 in
Maximum Reach
228 in
Maximum Dump Clearance
150 in
Maximum Blade Height
16 in
Maximum Dig Height
210 in
Boom In Reach
94 in
Boom Swing - Left
27 in
Boom Swing - Right
31 in
Dig Depth
137 in
Maximum Blade Depth
22 in
Vertical Wall
92 in
Track Belt/Shoe Width
16 in
Tail Swing
44 in
Swing Bearing - Height
24 in
O/A Undercarriage Length
102 in
O/A Track Width
78 in
Boom Height - Shipping Position
69 in

Lift Capacities at Ground Level - Lift Point Radius: 4500 mm (14'9”)

Blade Up - Side
1367 lb
Blade Down - Side
1521 lb
Blade Up - Front
1808 lb
Blade Down - Front
3042 lb

Operating Specifications

Stick Length - Long
70 in
Counterweight
364.4 lb
Stick Length - Standard
55 in

Lift Capacities at Ground Level - Lift Point Radius: 3000 mm (9'8”)

Blade Up - Side
2535 lb
Blade Up - Front
3417 lb
Blade Down - Front
5710 lb
Blade Down - Side
2844 lb

Certification - Cab and Canopy

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

Travel System

Maximum Traction Force - High Speed
6025 lb
Maximum Traction Force - Low Speed
10746 lb
Travel Speed - High
2.8 mile/h
Travel Speed - Low
1.7 mile/h
Ground Pressure - Canopy
4.5 psi
Ground Pressure - Cab
4.6 psi
Gradeability - Maximum
30°

Hydraulic System

Digging Force - Stick - Long
5575 lb
Digging Force - Stick - Standard
6500 lb
Operating Pressure - Equipment
3553 psi
Operating Pressure - Swing
3132 psi
Operating Pressure - Travel
3553 psi
Pump Flow at 2,400 rpm
39.6 gal/min
Type
Load Sensing Hydraulics with Variable Displacement Piston Pump
Digging Force - Bucket
11445 lb
Maximum Auxiliary Circuit - Primary - Pressure
3553 psi
Maximum Auxiliary Circuit - Secondary - Pressure
3553 psi
Maximum Auxiliary Circuit - Secondary - Flow
6.6 gal/min
Maximum Auxiliary Circuit - Primary - Flow
21.1 gal/min

Service Refill Capacities

Cooling System
2.8 gal (US)
Engine Oil
2.5 gal (US)
Fuel Tank
16.6 gal (US)
Hydraulic System
20.6 gal (US)
Hydraulic Tank
18 gal (US)

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 1.4 metric tonnes.

Cab

Dynamic Operator Sound Pressure Level (ISO 6396:2008)
81 dB(A)
Exterior Sound Power Level - ISO 6395:2008*
97 dB(A)
Note
*European Union Directive “2000/14/EC”

Undercarriage

Track Roller Type
Center Flange
Number of Track Rollers
4
Number of Carrier Rollers
1