Big EOFY Savings on Cat Compact machines until 30 June 2026. T&Cs apply. View Promotion

Big EOFY Savings on Cat Compact machines until 30 June 2026. T&Cs apply. View Promotion

305 CR Mini Hydraulic Excavator

305 CR

Mini Excavators
The Cat® 305 CR Mini Excavator delivers power and performance in a compact size to help you work in a wide range of applications.
Net Power
45 hp/33.6 kW
Engine Model
C1.7 Turbo
Net Power - 2,400 rpm - ISO 9249, 80/1269/EEC
45 hp/33.6 kW
Gross Power - 2,400 rpm - SAE J1995:2014
48.4 hp/36.1 kW

Key Features

Specifications

Metric | Imperial
Engine Expand Collapse
Net Power
45 hp 33.6 kW
Engine Model
C1.7 Turbo
Net Power - 2,400 rpm - ISO 9249, 80/1269/EEC
45 hp 33.6 kW
Gross Power - 2,400 rpm - SAE J1995:2014
48.4 hp 36.1 kW
Bore
3.3 in 84 mm
Stroke
3.9 in 100 mm
Displacement
101 in³ 1.662 l
Emissions
Meets U.S. EPA Tier 4 Final and EU Stage V emissions standards.
Note
Advertised power is tested per the specified standard in effect at the time of manufacture.
Operating Weight
12688 lb 5754 kg
Minimum Operating Weight with Canopy*
11038 lb 5006 kg
Maximum Operating Weight with Canopy**
12491 lb 5665 kg
Minimum Operating Weight with Cab*
11257 lb 5105 kg
Maximum Operating Weight with Cab**
12710 lb 5764 kg
Note (1)
*Minimum Weight is based on rubber tracks, operator, full fuel tank, standard stick, straight blade, no bucket and no extra counterweight.
Note (2)
**Maximum Weight is based on steel tracks with pads, operator, full fuel tank, long stick, straight blade, extra counterweight and no bucket.
Counterweight
534 lb 242 kg
Long Stick
75 lb 34 kg
Steel Tracks with Pads
827 lb 375 kg
Angle Blade
203 lb 92 kg
Travel Speed - High
3.1 mile/h 5 km/h
Travel Speed - Low
1.7 mile/h 2.8 km/h
Maximum Traction Force - High Speed
5553 lbf 24.7 kN
Maximum Traction Force - Low Speed
11353 lbf 50.5 kN
Ground Pressure - Minimum Weight
4 psi 27.3 kPa
Ground Pressure - Maximum Weight
4.7 psi 32.2 kPa
Gradeability - Maximum
30 degrees
Cooling System
2.9 gal (US) 11 l
Engine Oil
1.6 gal (US) 6 l
Fuel Tank
18 gal (US) 68 l
Hydraulic Tank
16 gal (US) 60 l
Hydraulic System
20 gal (US) 75 l
Pump Flow at 2,400 rpm
35 gpm 133 L/min
Operating Pressure - Equipment
3843 psi 265 bar
Operating Pressure - Travel
3843 psi 265 bar
Operating Pressure - Swing
2901 psi 200 bar
Auxiliary Circuit - Primary - Flow
21 gpm 80 L/min
Auxiliary Circuit - Primary - Pressure
3843 psi 265 bar
Auxiliary Circuit - Secondary - Flow
7 gpm 28 L/min
Auxiliary Circuit - Secondary - Pressure
3843 psi 265 bar
Digging Force - Stick - Standard
6362 lbf 28.3 kN
Digging Force - Stick - Long
5665 lbf 25.2 kN
Digging Force - Bucket
11061 lbf 49.2 kN
Note
Advertised power is tested per the specified standard in effect at the time of manufacture.
Type
Load Sensing Hydraulics with Variable Displacement Piston Pump
Machine Swing Speed
9 r/min 9 r/min
Boom Swing - Left
72 Degrees
Boom Swing - Right
50 Degrees
Straight Blade Width
78 in 1980 mm
Straight Blade Height
15.4 in 390 mm
Angle Blade Width
78 in 1980 mm
Angle Blade Height
15.7 in 400 mm
Angle Blade - Left
25 degrees
Angle Blade - Right
25 degrees
Roll Over Protective Structure (ROPS)
ISO 12117-2:2008
Top Guard
ISO 10262:1998 Level I
Dig Depth
134.6 in 3420 mm
Vertical Wall
91.9 in 2335 mm
Maximum Reach - Ground Level
220.1 in 5590 mm
Maximum Reach
226.6 in 5755 mm
Maximum Dig Height
205.3 in 5215 mm
Maximum Dump Clearance
145.7 in 3700 mm
Boom In Reach
101.2 in 2570 mm
Tail Swing without Counterweight
43.1 in 1095 mm
Tail Swing with Counterweight
47.2 in 1200 mm
Maximum Blade Height
15.7 in 400 mm
Maximum Blade Depth
25.6 in 650 mm
Boom Height - Shipping Position
71.7 in 1820 mm
O/A Shipping Height
100.4 in 2550 mm
Swing Bearing - Height
24.4 in 619 mm
O/A Undercarriage Length
101.6 in 2580 mm
Overall Shipping Length*
208.9 in 5305 mm
Boom Swing - Right
50 Degrees
Boom Swing - Left
72 Degrees
Track Belt/Shoe Width
15.7 in 400 mm
Track Width
78 in 1980 mm
Ground Clearance
13.2 in 335 mm
Stick Length
53.2 in 1351 mm
Note
Advertised power is tested per the specified standard in effect at the time of manufacture.
Dig Depth
134.6 in 3420 mm
Vertical Wall
91.9 in 2335 mm
Maximum Reach - Ground Level
220.1 in 5590 mm
Maximum Reach
226.6 in 5755 mm
Maximum Dig Height
205.3 in 5215 mm
Maximum Dump Clearance
145.7 in 3700 mm
Boom In Reach
101.2 in 2570 mm
Tail Swing without Counterweight
43.1 in 1095 mm
Tail Swing with Counterweight
47.2 in 1200 mm
Maximum Blade Height
15.7 in 400 mm
Maximum Blade Depth
25.6 in 650 mm
Boom Height - Shipping Position
71.7 in 1820 mm
O/A Shipping Height
100.4 in 2550 mm
Swing Bearing - Height
24.4 in 619 mm
O/A Undercarriage Length
101.6 in 2580 mm
Overall Shipping Length*
208.9 in 5305 mm
Boom Swing - Right
50 Degrees
Boom Swing - Left
72 Degrees
Track Belt/Shoe Width
15.7 in 400 mm
Track Width
78 in 1980 mm
Ground Clearance
13.2 in 335 mm
Stick Length
53.2 in 1351 mm
Note
Advertised power is tested per the specified standard in effect at the time of manufacture.
Air Conditioning
The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a or R1234yf (Europe) (Global Warming Potential = 1430). See label or instruction manual for gas refrigerant identification. The system contains 0.75 kg (1.65 lb), 0.90 kg (1.98 lb) or 1.0 kg (2.20 lb) of refrigerant which has a CO2 equivalent of 1.430 metric tonnes (1.576 tons) for R134a and 0.001 tonnes (0.001 tons) for R1234yf (Europe).
Operator Sound Pressure (ISO 6396:2008)
76 dB(A) 76 dB(A)
Average Exterior Sound Pressure (ISO 6395:2008)
97 dB(A) 97 dB(A)
Note
Advertised power is tested per the specified standard in effect at the time of manufacture.
Recyclability
96%

Equipment

Compatible Attachments

Impulse Force
3596.94 lb/16 kN
Impact Frequency
2200 bpm
Impulse Force
6294.65 lb/28 kN
Impact Frequency
2200 bpm
Length
35.7 in/907 mm
Stored Height
13.1 in/333 mm
Width
13.8 in/350 mm
Capacity
8.4 ft³/239 l
Machine Class
5-6 Ton Mini Excavators
Weight
410.1 lb/186 kg
Machine Class
5-6 Ton Mini Excavators
Weight
394.6 lb/179 kg
Machine Class
5-6 Ton Mini Excavators
Weight
463 lb/210 kg
Weight
255.7 lb/116 kg
Overall Width
11.7 in/298 mm
Shank Length
26.6 in/676 mm
Weight
134 lb/60.79 kg
Height
21.7 in/550 mm
Width
51 in/1300 mm
Width
12.6 in/320 mm
Capacity
4.2 ft³/120 l
Width
24.4 in/620 mm
Capacity
8.5 ft³/240 l
Tip Force
43.3 Sh Ton/385 kN
Rotation
360 Degrees
Width
12 in/305 mm
Capacity
2.9 ft³/82.09 l
Width
20 in/508 mm
Capacity
5.1 ft³/144.39 l
Width
24.4 in/619 mm
Capacity
6.4 ft³/181.19 l
Width
30 in/762 mm
Capacity
8.5 ft³/240.69 l
Width
36 in/914 mm
Capacity
10.6 ft³/300.2 l
Width
24.4 in/619 mm
Capacity
4.6 ft³/130.3 l
Width
36 in/914 mm
Capacity
7.8 ft³/220.89 l
Width
24 in/600 mm
Weight
209.4 lb/95 kg
Operating Weight - With Tool
760.6 lb/345 kg
Energy Class
599.6 ft·lbf/813 J
Operating Weight - With Tool
859.8 lb/390 kg
Energy Class
800.3 ft·lbf/1085 J
Width
47.2 in/1200 mm
Capacity
9.2 ft³/259.89 l
Width
59.1 in/1500 mm
Capacity
11.6 ft³/329.89 l
Weight
169.8 lb/77 kg
Width
10.7 in/272 mm
Weight
123.5 lb/56 kg
Width
11.7 in/298 mm
Working Width
39.4 in/1000 mm
Required Hydraulics
Standard Flow
Grapple Area
5.7 ft³/160 l
Weight
731.9 lb/332 kg
Compaction Width
15.7 in/399 mm
Number of Wheels
3
Compaction Width
21.8 in/553 mm
Number of Wheels
4
Compaction Width
10.7 in/271 mm
Number of Wheels
2
Working Width
13.8 in/350 mm
Maximum Cutting Depth
4.7 in/120 mm
Drive Shaft Torque at Maximum Pressure
3038.8 lb/ft/4120 N·m
Drive Method
Gerotor Motor - Single Planetary Reduction
Drive Shaft Torque at Maximum Pressure
5034.6 lb/ft/6826 N·m
Drive Method
Gerotor Motor - Double Planetary Reduction

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