The Cat® 303E 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 C1.3 |
| Net Power | 23.5 HP / 17.5 kW |
| Gross Power - ISO 14396 | 24.8 HP / 18.5 kW |
| Bore | 3.1 in / 78 mm |
| Displacement | 77 in³ / 1.26 l |
| Stroke | 3.5 in / 88 mm |
| Gross Power | 24.8 HP / 18.5 kW |
| Rated Net Power - 2,400 rpm - ISO 9249/EEC 80/1269 | 23.5 HP / 17.5 kW |
| Weights | |
|---|---|
| Operating Weight - With Cab | 7782 lb / 3530 kg |
| Operating Weight - With Canopy | 7297 lb / 3310 kg |
| Note | Weight includes counterweight, rubber tracks, bucket, operator, full fuel and auxiliary lines. |
| Travel System | |
|---|---|
| Maximum Traction Force - High Speed | 3417 lb / 15.2 kN |
| Maximum Traction Force - Low Speed | 6946 lb / 30.9 kN |
| Travel Speed - High | 2.8 mile/h / 4.5 km/h |
| Travel Speed - Low | 1.5 mile/h / 2.4 km/h |
| Ground Pressure | 4.6 psi / 32.2 kPa |
| Gradeability - Maximum | 30° |
| Hydraulic System | |
|---|---|
| Auxiliary Circuit - Primary (186 bar/2,734 psi) | 15.9 gal/min / 60 l/min |
| Auxiliary Circuit - Secondary (174 bar/2,524 psi) | 7.1 gal/min / 27 l/min |
| Digging Force - Bucket | 6384 lb / 28.4 kN |
| Digging Force - Stick - Standard | 3731 lb / 16.6 kN |
| Operating Pressure - Equipment | 3553 psi / 245 bar |
| Operating Pressure - Swing | 2625 psi / 181 bar |
| Operating Pressure - Travel | 3553 psi / 245 bar |
| Pump Flow at 2,400 rpm | 23.1 gal/min / 87.6 l/min |
| Type | Load Sensing Hydraulics with Variable Displacement Piston Pump |
| Swing System | |
|---|---|
| Machine Swing Speed | 9 r/min |
| Boom Swing - Left* | 80° |
| Boom Swing - Right | 50° |
| Note | *Automatic swing brake, spring applied, hydraulic release. |
| Blade | |
|---|---|
| Width | 60 in / 1550 mm |
| Height | 13 in / 335 mm |
| Dig Depth | 19 in / 472 mm |
| Lift Height | 16 in / 402 mm |
| Service Refill Capacities | |
|---|---|
| Cooling System | 1.2 gal (US) / 4.7 l |
| Engine Oil | 1.5 gal (US) / 5.7 l |
| Fuel Tank | 11.8 gal (US) / 45 l |
| Hydraulic System | 17.2 gal (US) / 65 l |
| Hydraulic Tank | 12.4 gal (US) / 47 l |
| 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 (Approximate) | |
|---|---|
| Boom Height - Shipping Position | 63 in / 1590 mm |
| Boom In Reach | 83 in / 2110 mm |
| Boom Swing - Left | 24 in / 610 mm |
| Boom Swing - Right | 32 in / 825 mm |
| Dig Depth | 108 in / 2750 mm |
| Maximum Blade Depth | 19 in / 472 mm |
| Maximum Blade Height | 16 in / 402 mm |
| Maximum Dig Height | 178 in / 4530 mm |
| Maximum Dump Clearance | 124 in / 3150 mm |
| Maximum Reach | 195 in / 4950 mm |
| Maximum Reach - Ground Level | 189 in / 4810 mm |
| O/A Shipping Height | 98 in / 2500 mm |
| O/A Shipping Length | 176 in / 4470 mm |
| O/A Track Width | 60 in / 1550 mm |
| O/A Undercarriage Length | 87 in / 2210 mm |
| Swing Bearing - Height | 22 in / 565 mm |
| Tail Swing | 35 in / 890 mm |
| Track Belt/Shoe Width | 12 in / 300 mm |
| Vertical Wall | 77 in / 1960 mm |
| Undercarriage | |
|---|---|
| Number of Carrier Rollers | 3 |
| Number of Track Rollers | 3 |
| Track Roller Type | Double Flange |
| Model | Width | Rated Capacity | Weight |
|---|---|---|---|
| 305 mm (12 in) | 12 in / 305 mm | 1.7 ft³ / 48.1 l | 143.3 lb / 65 kg |
| 406 mm (16 in) | 16 in / 406 mm | 2.5 ft³ / 70.8 l | 163.1 lb / 74 kg |
| 457 mm (18 in) | 18 in / 457 mm | 2.9 ft³ / 82.1 l | 180.8 lb / 82 kg |
| 508 mm (20 in) | 20 in / 508 mm | 3.3 ft³ / 93.4 l | 191.8 lb / 87 kg |
| 619 mm (24 in) | 24.4 in / 619 mm | 4.2 ft³ / 118.9 l | 216.1 lb / 98 kg |
| 762 mm (30 in) | 30 in / 762 mm | 5.6 ft³ / 158.6 l | 257.9 lb / 117 kg |
| Model | Drive Shaft Torque at Maximum Pressure | Drive Method | Mounting Bracket Design |
|---|---|---|---|
| A14B | 1700 lb/ft / 2304 N·m | Gerotor Motor - Direct Drive | Mini Hydraulic Excavator |
| A19B | 3040 lb/ft / 4120 N·m | Gerotor Motor - Single Planetary Reduction | Mini Hydraulic Excavator |
| Model | Width | Rated Capacity | Weight |
|---|---|---|---|
| 1000 mm (40 in) | 39.4 in / 1000 mm | 4.8 ft³ / 135.9 l | 240.1 lb / 108.9 kg |
| 1200 mm (47 in) | 47.2 in / 1200 mm | 5.9 ft³ / 167.1 l | 235.7 lb / 106.9 kg |
| 1400 mm (55 in) | 55.1 in / 1400 mm | 6.96 ft³ / 197.1 l | 259.3 lb / 117.6 kg |
| Model | Width | Rated Capacity | Weight |
|---|---|---|---|
| 1200 mm (47 in) | 47.2 in / 1200 mm | 8.19 ft³ / 231.9 l | 380.9 lb / 172.8 kg |
| Model | Width | Rated Capacity | Weight |
|---|---|---|---|
| 1200 mm (47 in) | 47.2 in / 1200 mm | 5.6 ft³ / 158.6 m³ | 357.8 lb / 162.3 kg |
| Model | Length | Overall Width | Stored Height |
|---|---|---|---|
| 303/303.5/304 PIN ON | 32.2 in / 818 mm | 13.4 in / 340 mm | 12.2 in / 310 mm |
| 303/303.5/304 PIN ON | 32.2 in / 818 mm | 15.2 in / 387 mm | 12.1 in / 307 mm |
| Model | Shank Length | Weight | Overall Length |
|---|---|---|---|
| 490 mm (19 in) | 19 in / 490 mm | 99 lb / 45 kg | 26 in / 659 mm |
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