304 Mini Excavator
Introducing the Next Generation Cat 304 and 305 CR Mini Excavators
Overview of the Next Generation Cat 304 and 305 CR Mini Excavators
Standard Monitor on the Next Generation Cat Mini Excavators
Comparing the Next Generation Cat 304 and 305 CR Mini Excavators to the E2 Series
Advanced Monitor on the Next Generation Cat Mini Excavators
Cat 304 Mini Excavator Customer Story - Hilcon LLC (North Carolina, United States)
Contact Us For Price
SPECS SUMMARY
| Net Power | 45 hp (33.6 kW) |
| Operating Weight | 9867 lb (4475 kg) |
| Dig Depth | 138.2 in (3510 mm) |
| Engine Model | C1.7 Turbo |
Specifications
| Net Power | 45 hp (33.6 kW) |
| Operating Weight | 9867 lb (4475 kg) |
| Dig Depth | 138.2 in (3510 mm) |
| Engine Model | C1.7 Turbo |
| Counterweight | 496 lb (225 kg) |
| Dig Depth | 126.4 in (3210 mm) |
| Net Power - 2,400 rpm - ISO 9249, 80/1269/EEC | 45 hp (33.6 kW) |
| Minimum Operating Weight with Canopy* | 8655 lb (3925 kg) |
| Long Stick | 66 lb (30 kg) |
| Travel Speed - High | 3.2 mile/h (5.2 km/h) |
| Cooling System | 2.9 gal (US) (11 l) |
| Type | Load Sensing Hydraulics with Variable Displacement Piston Pump |
| Machine Swing Speed | 9 r/min (9 r/min) |
| Straight Blade Width | 66.9 in (1700 mm) |
| Roll Over Protective Structure (ROPS) | ISO 12117-2:2008 |
| Vertical Wall | 94.3 in (2395 mm) |
| Vertical Wall | 99.8 in (2535 mm) |
| 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)) |
| Recyclability | 96% |
| Gross Power - ISO 14396 | 48.4 hp (36.1 kW) |
| Maximum Operating Weight with Canopy** | 9647 lb (4375 kg) |
| Steel Tracks | 430 lb (195 kg) |
| Travel Speed - Low | 2.2 mile/h (3.5 km/h) |
| Engine Oil | 1.6 gal (US) (6 l) |
| Pump Flow at 2,400 rpm | 25 gpm (96 L/min) |
| Boom Swing - Left | 78 Degrees |
| Straight Blade Height | 14.2 in (360 mm) |
| Top Guard | ISO 10262:1998 (Level I) |
| Maximum Reach - Ground Level | 204.7 in (5200 mm) |
| Maximum Reach - Ground Level | 214.4 in (5445 mm) |
| Average Exterior Sound Pressure (ISO 6395:2008) | 97 dB(A) (97 dB(A)) |
| Bore | 3.3 in (84 mm) |
| Minimum Operating Weight with Cab* | 8875 lb (4025 kg) |
| Angle Blade | 243 lb (110 kg) |
| Maximum Traction Force - High Speed | 4271 lbf (19 kN) |
| Fuel Tank | 17 gal (US) (63 l) |
| Operating Pressure - Equipment | 3553 psi (245 bar) |
| Boom Swing - Right | 50 Degrees |
| Angle Blade Width | 66.9 in (1700 mm) |
| Maximum Reach | 209.8 in (5330 mm) |
| Maximum Reach | 219.3 in (5570 mm) |
| Note | European Union Directive “2000/14/EC” |
| Stroke | 3.9 in (100 mm) |
| Maximum Operating Weight with Cab** | 9867 lb (4475 kg) |
| Maximum Traction Force - Low Speed | 7329 lbf (32.6 kN) |
| Hydraulic Tank | 14 gal (US) (52 l) |
| Operating Pressure - Travel | 3553 psi (245 bar) |
| Angle Blade Height | 14.2 in (360 mm) |
| Maximum Dig Height | 198.4 in (5040 mm) |
| Maximum Dig Height | 201.8 in (5125 mm) |
| Displacement | 101 in³ (1.662 l) |
| Note (1) | *Minimum Weight is based on rubber tracks, operator, full fuel tank, standard stick, straight blade, no bucket and no extra counterweight. |
| Ground Pressure - Minimum Weight | 4.2 psi (28.7 kPa) |
| Hydraulic System | 17 gal (US) (65 l) |
| Operating Pressure - Swing | 2611 psi (180 bar) |
| Angle Blade - Left | 25 Degrees |
| Maximum Dump Clearance | 143.5 in (3645 mm) |
| Maximum Dump Clearance | 147.2 in (3740 mm) |
| Emissions | Meets U.S. EPA Tier 4 Final and EU Stage V emission standards. |
| Note (2) | **Maximum Weight is based on steel tracks, operator, full fuel tank, long stick, straight blade, extra counterweight and no bucket. |
| Ground Pressure - Maximum Weight | 4.9 psi (33.8 kPa) |
| Auxiliary Circuit - Primary - Flow | 21 gpm (65 L/min) |
| Angle Blade - Right | 25 Degrees |
| Boom In Reach | 88.8 in (2255 mm) |
| Boom In Reach | 92.1 in (2340 mm) |
| Note | Net power advertised is the power available at the flywheel when the engine is at rated speed and rated power when the engine is installed with the factory configured fan, air intake system, exhaust system, and alternator with a minimum alternator load. |
| Gradeability - Maximum | 30 degrees |
| Auxiliary Circuit - Primary - Pressure | 3553 psi (245 bar) |
| Tail Swing without Counterweight | 47.4 in (1205 mm) |
| Tail Swing without Counterweight | 47.4 in (1205 mm) |
| Auxiliary Circuit - Secondary - Flow | 7 gpm (28 L/min) |
| Tail Swing with Counterweight | 51.2 in (1300 mm) |
| Tail Swing with Counterweight | 51.2 in (1300 mm) |
| Auxiliary Circuit - Secondary - Pressure | 3553 psi (245 bar) |
| Maximum Blade Height | 16.5 in (420 mm) |
| Maximum Blade Height | 16.5 in (420 mm) |
| Digging Force - Stick - Standard | 4721 lbf (21 kN) |
| Maximum Blade Depth | 18.7 in (475 mm) |
| Maximum Blade Depth | 18.7 in (475 mm) |
| Digging Force - Stick - Long | 4316 lbf (19.2 kN) |
| Boom Height - Shipping Position | 63.8 in (1620 mm) |
| Boom Height - Shipping Position | 75.2 in (1910 mm) |
| Digging Force - Bucket | 8588 lbf (38.2 kN) |
| O/A Shipping Height | 100 in (2540 mm) |
| O/A Shipping Height | 100 in (2540 mm) |
| Note | Flow and pressure are not combinable. Under load, as flow rises pressure goes down. |
| Swing Bearing - Height | 21.9 in (557 mm) |
| Swing Bearing - Height | 21.9 in (557 mm) |
| O/A Undercarriage Length | 87 in (2210 mm) |
| O/A Undercarriage Length | 87 in (2210 mm) |
| Overall Shipping Length* | 194.9 in (4950 mm) |
| Overall Shipping Length* | 194.9 in (4950 mm) |
| Boom Swing - Right | 28.7 in (730 mm) |
| Boom Swing - Right | 28.7 in (730 mm) |
| Boom Swing - Left | 20.9 in (530 mm) |
| Boom Swing - Left | 20.9 in (530 mm) |
| Track Belt/Shoe Width | 13.8 in (350 mm) |
| Track Belt/Shoe Width | 13.8 in (350 mm) |
| Track Width | 66.9 in (1700 mm) |
| Track Width | 66.9 in (1700 mm) |
| Ground Clearance | 12 in (305 mm) |
| Ground Clearance | 12 in (305 mm) |
| Stick Length | 54.9 in (1395 mm) |
| Stick Length | 66.7 in (1695 mm) |
| Note | *Overall Shipping Length depends on blade position during shipment. |
| Note | *Overall Shipping Length depends on blade position during shipment. |
Benefits and Features
- Choose either a canopy (not available in some regions) or a sealed and pressurized cab which can be equipped with air conditioning, adjustable wrist rests, and a suspension seat to help keep you working comfortably all day long.
- Controls are easy to use and the intuitive Next Generation LCD monitor provides easy to read machine information. An advanced touchscreen monitor can also be equipped as an upgrade option.
- Moving around the job site is even easier with the Cat Stick Steer option. Easily switch from traditional travel controls with levers and pedals to joystick controls to move the machine and to operate the blade. The benefit of less effort and improved control is in your hands!
- Strong lift and dig performance helps you get the job done faster. The reduced radius tail swing design provides exceptional stability and performance. With a maximum width of 1700 mm (67 in), the 304 can access those hard to get into areas. Dozer float allows for easy clean up. An angle blade is also an option for finished grading and easier backfilling applications.
- Your safety is our top priority. The Cat mini excavator is designed to help keep you safe on the job. Courtesy work lights and a fluorescent retractable seat belt are just a couple of the safety features we’ve built into the machine.
- Maintenance is quick and easy on the Cat mini excavator. Routine check points are easy to access at ground level through the side doors.
- Equipped with features such as auto idle, auto engine shutdown, and efficient hydraulics with a variable displacement pump, the Cat mini excavator was designed with reducing your operating costs in mind.
- The Cat® C1.7 engine meets U.S. EPA Tier 4 Final, EU Stage V, and Japan 2014 emission standards.
- Cat diesel engines are required to use ULSD (ultra-low sulfur diesel fuel with 15 ppm of sulfur or less) or ULSD blended with the following lower-carbon intensity fuels up to: 20% biodiesel FAME (fatty acid methyl ester) * or 100% renewable diesel, HVO (hydrotreated vegetable oil) and GTL (gas-to-liquid) fuels. Refer to guidelines for successful application. Please consult your Cat dealer or “Caterpillar Machine Fluids Recommendations” (SEBU6250) for details.
- Auto Idle helps reduce unnecessary fuel burn and greenhouse gas emissions by allowing the engine to automatically go into idle mode when the machine is not working.
- Engine Idle Shutdown Timer reduces fuel burn, greenhouse gas emissions and unnecessary idle time by shutting down the machine after a pre-set idling period.
- Cruise control helps you maintain a constant speed as you travel across your jobsite saving fuel and reducing greenhouse gas emissions.
- The Cat® Seat Belt Reminder provides audible and visual warnings to remind operators to buckle up during machine operation. The easy-to-install system is compatible with all equipment brands to help ensure operator safety.
- Extended maintenance intervals not only reduce downtime but decrease the amount of fluid and filters that are replaced over the life of the machine.
- Remote Flash minimizes downtime and maintenance time while keeping your asset running with maximum efficiency. Alerts for machine updates are sent virtually from your Cat dealer and updates can be deployed without a dealer technician needing to be onsite.(if equipped)
- Remote Troubleshoot decreases maintenance time and keeps your machine running with maximum efficiency by allowing your Cat dealer to virtually test the machine while working. Once a problem is identified, a technician can fix it the first time, saving time and money.(if equipped)
- Cat Grade with advanced 2D and 3D technologies combine advanced guidance with optional automated machine control helping you reach grading targets while reducing fuel burn and greenhouse gas emissions by improving efficiency, job site productivity, and accuracy. (if equipped).
Standard Equipment
- Cat® C1.7 Turbo Engine (U.S. EPA Tier 4 Final/EU Stage V)
- Automatic Engine Idle
- Automatic Engine Shutdown
- Automatic Two Speed Travel
- Fuel Water Separator
- Power on Demand (not available in all regions)
- Variable Displacement Piston Pump
- Load Sensing/Flow Sharing Hydraulics
- Smart Tech Electronic Pump
- Accumulator
- Automatic Swing Brake
- Auxiliary Hydraulic Lines
- One and Two Way Auxiliary Flow
- Continuous Auxiliary Flow
- Auxiliary Line Quick Disconnects
- Canopy or Cab (Canopy not available in some regions)
- Stick Steer Mode
- Travel Cruise Control
- Control Pattern Changer (optional in some regions)
- Adjustable Wrist Rests
- Washable Floor Mat
- Travel Pedals and Hand Levers
- Machine Security – Standard Key with Pass Code
- Fabric Suspension Seat (Cab only)
- Vinyl Suspension Seat (Canopy only)
- Hydraulic Lockout – All Controls
- Retractable High Visibility Seat Belt (75 mm/3 in)
- Coat Hook
- Cup Holder
- Storage Pocket
- Skylight
- Mounting Bosses for Front
- Signaling/Warning Horn
- Interior Light (Cab only)
- Boom Light, Halogen (not available in all regions)
- Utility Space for Mobile Phone
- Next Generation Color LCD Monitor (IP66)
– Fuel Level and Coolant Temperature Gauges
– Maintenance and Machine Monitoring
– Performance and Machine Adjustments
– Numeric Security Code
– Multiple Languages
– Hour Meter with Wake Up Switch
– Jog Dial (cab only)
- Rubber Belt (350 mm/13.8 in)
- Dozer Straight Blade
- Dozer Blade Float
- Tie Downs on Track Frame
- One Piece Boom (2500 mm/98.4 in)
- Standard Stick (1395 mm/54.9 in)
- Front Shovel Capable – Pin-On
- Thumb Ready
- Certified Lifting Eye
- Hydraulic Quick Coupler Lines
- 12 Volt Battery
- Software (machine and monitor)
- Maintenance Free Battery
- Lock Out/Tag Out Battery Disconnect
- 12 Volt Power Socket
- Product Link™ Elite
- Travel Alarm (optional in some regions)
- ROPS – ISO 12117-2:2008
- Top Guard ISO 10262:1998 Level I
- Eco Drain
Optional Equipment
- Cab with Air Conditioning
- Cab with Heater
- No Travel Pedals and Hand Levers (optional in some regions)
- Machine Security – Push to Start with Key Fob/Pass Code
- Seat Belt Reminder System
- LED Front and Rear Lights
- Mirrors, Left, Right and Rear
- Camera
- Radio – Bluetooth®, Auxiliary, Microphone, USB (charging only) (Cab only)
- Next Generation Advanced Monitor
– Touch Screen
– Site Reference System
– High Definition Camera Capable (IP68 and IP69K)
– Numeric Security Code
- Steel Track (350 mm/13.8 in)
- Angle Blade
- Long Stick (1695 mm/66.7 in)
- Front Shovel Capable – Dual Lock Manual Coupler
- Front Shovel Capable – Hydraulic Coupler
- Attachments including Couplers, Thumbs, Buckets, Augers and Hammers
- 2nd Auxiliary Hydraulic Lines
- Bucket Divert Lines
- Boom Lowering Check Valve (Europe Standard)
- Stick Lowering Check Valve (Europe Standard)
- Cat Grade Advanced 2D
- Cat Grade 3D
- Top Guard ISO 10262:1998 (Level II)
- Front Guard (Mesh) ISO 10262:1998 (Level I)
- Front Guard (Heavy Duty) ISO 10262:1998 Level (II)
- Bio Oil Capable
- Water Jacket Heater
- Counterweight (225 kg/496 lb)