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 | |
|---|---|
| Engine Model | Cat® C2.4 |
| Net Power | 44.1 HP / 32.9 kW |
| Rated Net Power - 2,200 rpm - ISO 9249/EEC 80/1269 | 44.1 HP / 32.9 kW |
| Bore | 3.4 in / 87 mm |
| Displacement | 146 in³ / 2.4 l |
| Stroke | 4 in / 102.4 mm |
| Emissions | Meets U.S. EPA Tier 4 Final/EU Stage IIIA emission standards. |
| Gross Power - ISO 14396 | 45.7 HP / 34.1 kW |
| Weights* | |
|---|---|
| Operating Weight | 11958 lb / 5423 kg |
| Weight - Canopy, Standard Stick | 11503 lb / 5217 kg |
| Note | *Weight includes counterweight, rubber tracks, bucket, operator, full fuel and auxiliary lines. |
| Weight - Cab, Long Stick | 11958 lb / 5423 kg |
| Weight - Cab, Standard Stick | 11863 lb / 5380 kg |
| Weight - Canopy, Long Stick | 11596 lb / 5259 kg |
| Travel System | |
|---|---|
| Maximum Traction Force - High Speed | 6025 lb / 26.8 kN |
| Maximum Traction Force - Low Speed | 10746 lb / 47.8 kN |
| Travel Speed - High | 2.8 mile/h / 4.5 km/h |
| Travel Speed - Low | 1.7 mile/h / 2.8 km/h |
| Gradeability - Maximum | 30° |
| Ground Pressure - Cab | 4.6 psi / 31.9 kPa |
| Ground Pressure - Canopy | 4.5 psi / 31 kPa |
| Hydraulic System | |
|---|---|
| Auxiliary Circuit - Primary (186 bar/2,734 psi) | 21.1 gal/min / 80 l/min |
| Auxiliary Circuit - Secondary (174 bar/2,524 psi) | 6.6 gal/min / 25 l/min |
| Digging Force - Stick - Long | 5575 lb / 24.8 kN |
| Digging Force - Stick - Standard | 6500 lb / 28.9 kN |
| Operating Pressure - Equipment | 3553 psi / 245 bar |
| Operating Pressure - Swing | 3132 psi / 216 bar |
| Operating Pressure - Travel | 3553 psi / 245 bar |
| Pump Flow at 2,400 rpm | 39.6 gal/min / 150 l/min |
| Digging Force - Bucket | 11445 lb / 50.9 kN |
| Type | Load Sensing Hydraulics with Variable Displacement Piston Pump |
| 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 / 1980 mm |
| Height | 14.8 in / 375 mm |
| Dig Depth | 21.9 in / 555 mm |
| Lift Height | 15.9 in / 405 mm |
| Service Refill Capacities | |
|---|---|
| Cooling System | 2.8 gal (US) / 10.5 l |
| Engine Oil | 2.5 gal (US) / 9.5 l |
| Fuel Tank | 16.6 gal (US) / 63 l |
| Hydraulic System | 20.6 gal (US) / 78 l |
| Hydraulic Tank | 18 gal (US) / 68.3 l |
| 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” |
| Certification - Cab and Canopy | |
|---|---|
| Roll Over Protective Structure (ROPS) | ISO 12117-2 |
| Tip Over Protective Structure (TOPS) | ISO 12117 |
| Top Guard | ISO 10262 (Level I) |
| Dimensions - Long Stick | |
|---|---|
| Boom Height - Shipping Position | 85 in / 2150 mm |
| Boom In Reach | 100 in / 2530 mm |
| Boom Swing - Left | 27 in / 695 mm |
| Boom Swing - Right | 31 in / 785 mm |
| Dig Depth | 152 in / 3870 mm |
| Maximum Blade Depth | 22 in / 555 mm |
| Maximum Blade Height | 16 in / 405 mm |
| Maximum Dig Height | 220 in / 5590 mm |
| Maximum Dump Clearance | 161 in / 4080 mm |
| Maximum Reach | 243 in / 6170 mm |
| Maximum Reach - Ground Level | 237 in / 6020 mm |
| O/A Shipping Height | 100 in / 2550 mm |
| O/A Shipping Length | 215 in / 5460 mm |
| O/A Track Width | 78 in / 1980 mm |
| O/A Undercarriage Length | 102 in / 2580 mm |
| Swing Bearing - Height | 24 in / 615 mm |
| Tail Swing | 44 in / 1130 mm |
| Track Belt/Shoe Width | 16 in / 400 mm |
| Vertical Wall | 107 in / 2730 mm |
| Dimensions - Standard Stick | |
|---|---|
| Boom Height - Shipping Position | 69 in / 1740 mm |
| Boom In Reach | 94 in / 2400 mm |
| Boom Swing - Left | 27 in / 695 mm |
| Boom Swing - Right | 31 in / 785 mm |
| Dig Depth | 137 in / 3470 mm |
| Maximum Blade Depth | 22 in / 555 mm |
| Maximum Blade Height | 16 in / 405 mm |
| Maximum Dig Height | 210 in / 5330 mm |
| Maximum Dump Clearance | 150 in / 3820 mm |
| Maximum Reach | 228 in / 5790 mm |
| Maximum Reach - Ground Level | 222 in / 5630 mm |
| O/A Shipping Height | 100 in / 2550 mm |
| O/A Shipping Length | 210 in / 5330 mm |
| O/A Track Width | 78 in / 1980 mm |
| O/A Undercarriage Length | 102 in / 2580 mm |
| Swing Bearing - Height | 24 in / 615 mm |
| Tail Swing | 44 in / 1130 mm |
| Track Belt/Shoe Width | 16 in / 400 mm |
| Vertical Wall | 92 in / 2330 mm |
| Lift Capacities at Ground Level - Lift Point Radius: 3000 mm (9'8”) | |
|---|---|
| Blade Down - Front | 5710 lb / 2590 kg |
| Blade Down - Side | 2844 lb / 1290 kg |
| Blade Up - Front | 3417 lb / 1550 kg |
| Blade Up - Side | 2535 lb / 1150 kg |
| Lift Capacities at Ground Level - Lift Point Radius: 4500 mm (14'9”) | |
|---|---|
| Blade Down - Front | 3042 lb / 1380 kg |
| Blade Down - Side | 1521 lb / 690 kg |
| Blade Up - Front | 1808 lb / 820 kg |
| Blade Up - Side | 1367 lb / 620 kg |
| Operating Specifications | |
|---|---|
| Counterweight | 364.4 lb / 165.3 kg |
| Stick Length - Long | 70 in / 1820 mm |
| Stick Length - Standard | 55 in / 1420 mm |
| Undercarriage | |
|---|---|
| Number of Carrier Rollers | 1 |
| Number of Track Rollers | 4 |
| Track Roller Type | Center Flange |
| Model | Working Width | Required Hydraulics | Drive Method |
|---|---|---|---|
| HMF110 | 40 in / 1000 mm | Standard Flow | V-Belt Drive |
| Model | Width | Rated Capacity | Weight |
|---|---|---|---|
| 305 mm (12 in) | 12 in / 305 mm | 2.1 yd³ / 59.5 m³ | 156.5 lb / 71 kg |
| 406 mm (16 in) | 16 in / 406 mm | 2.7 yd³ / 76.5 m³ | 174.2 lb / 79 kg |
| 457 mm (18 in) | 18 in / 457 mm | 3.1 yd³ / 87.8 m³ | 194 lb / 88 kg |
| 508 mm (20 in) | 20 in / 508 mm | 3.6 yd³ / 101.9 m³ | 207.2 lb / 94 kg |
| 619 mm (24 in) | 24.4 in / 619 mm | 4.6 yd³ / 130.3 m³ | 233.7 lb / 106 kg |
| 762 mm (30 in) | 30 in / 762 mm | 6.1 yd³ / 172.7 m³ | 280 lb / 127 kg |
| 914 mm (36 in) | 36 in / 914 mm | 7.8 yd³ / 220.9 m³ | 321.9 lb / 146 kg |
| Model | Width | Rated Capacity | Weight |
|---|---|---|---|
| 305 mm (12 in) | 12 in / 305 mm | 2.9 yd³ / 82.1 m³ | 185.2 lb / 84 kg |
| 406 mm (16 in) | 16 in / 406 mm | 3.7 yd³ / 104.8 m³ | 205 lb / 93 kg |
| 457 mm (18 in) | 18 in / 457 mm | 4.4 yd³ / 124.6 m³ | 227.1 lb / 103 kg |
| 508 mm (20 in) | 20 in / 508 mm | 5.1 yd³ / 144.4 m³ | 240.3 lb / 109 kg |
| 619 mm (24 in) | 24.4 in / 619 mm | 6.4 yd³ / 181.2 m³ | 271.2 lb / 123 kg |
| 762 mm (30 in) | 30 in / 762 mm | 8.5 yd³ / 240.7 m³ | 321.9 lb / 146 kg |
| 914 mm (36 in) | 36 in / 914 mm | 10.6 yd³ / 300.2 m³ | 368.2 lb / 167 kg |
| Model | Drive Shaft Torque at Maximum Pressure | Drive Method | Mounting Bracket Design |
|---|---|---|---|
| A19B | 3040 lb/ft / 4120 N·m | Gerotor Motor - Single Planetary Reduction | Mini Hydraulic Excavator |
| A19B | 3040 lb/ft / 4120 N·m | Gerotor Motor - Single Planetary Reduction | Mini Hydraulic Excavator |
| A26B | 5034 lb/ft / 6826 N·m | Gerotor Motor - Double Planetary Reduction | Mini Hydraulic Excavator |
| A26B | 5034 lb/ft / 6826 N·m | Gerotor Motor - Double Planetary Reduction | Mini Hydraulic Excavator |
| Model | Width | Capacity | Weight |
|---|---|---|---|
| 1000 mm (40 in) | 39.4 in / 1000 mm | 6 ft³ / 169.9 l | 258.6 lb / 117.3 kg |
| 1300 mm (51 in) | 51.2 in / 1300 mm | 220.3 l / 7.8 ft³ | 260.6 lb / 118.2 kg |
| 1600 mm (63 in) | 63 in / 1600 mm | 9.9 ft³ / 279.8 l | 306.7 lb / 139.1 kg |
| Model | Width | Rated Capacity | Weight |
|---|---|---|---|
| 1200 mm (47 in) | 47.2 in / 1200 mm | 9.18 yd³ / 259.9 m³ | 410.6 lb / 186.2 kg |
| 1500 mm (59 in) | 59.1 in / 1500 mm | 11.65 yd³ / 329.9 m³ | 491.4 lb / 222.9 kg |
| Model | Width | Rated Capacity | Weight |
|---|---|---|---|
| 1600 mm (63 in) | 63 in / 1600 mm | 9.9 yd³ / 280.3 m³ | 552.3 lb / 250.5 kg |
| Model | Shank Length | Weight | Overall Length |
|---|---|---|---|
| 676 mm (27 in) | 27 in / 676 mm | 135 lb / 61 kg | 32 in / 822 mm |
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