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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.

Specifications
Features
Standard Equipment

Engine Dimensions

Bore
3.4 in
Stroke
4 in
Displacement
146 in3

Engine

Engine Model
Cat® C2.4
Net Power
44.1 hp
Gross Power
44.1 hp

Blade

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

Weights

Operating Weight
11958 lb
Operating Weight with Cab
11503 lb

Swing System

Machine Swing Speed
10 RPM
Boom swing - left (without stop)
80° Degrees
Boom swing - left (with stop)
60° Degrees
Boom Swing - Right
50° Degrees

Service Refill Capacities

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

Hydraulic System

Operating Pressure - Equipment
39.6 psi
Digging Forces - Stick (standard)
3553 lb
Digging Force - Stick (long)
3553 lb
Digging Force - Bucket
3132 lb
Operating Pressure - Travel
21.1 psi
Operating Pressure - Swing
6.6 psi
Auxiliary circuit - primary
6500 gal/min
Auxiliary circuit - secondary
5575 gal/min

Travel System

Max traction force - high speed
2.8 lb
Max traction force - low speed
1.7 lb
Travel Speed - High
6025 mph
Travel Speed - Low
10746 mph
QUALITY

QUALITY

The durable hoods and frame and the compact radius design of the 305.5E2 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

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

VERSATILITY

Broad range of Cat Work Tools make the Cat Mini Excavator a versatile machine able to meet the requirements of any job site. Over 200 degrees of bucket rotation provides greater material retention during truck loading and easier flat wall digging without having to reposition the machine.

PERFORMANCE

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.

SERVICEABILITY

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

SAFETY

All Cat Mini Excavators from 3.5 metric tons to 8 metric tons are ROPS, TOPS and Top Guard Level 1 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).

  • ENGINE
  • HYDRAULIC SYSTEM
  • OPERATOR ENVIRONMENT
  • UNDERCARRIAGE
  • FRONT LINKAGE
  • ELECTRICAL
  • LIGHTS AND MIRRORS
  • SAFETY AND SECURITY