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Caterpillar
305 CR Mini Hydraulic Excavator
Net Power
45 hp
33.6 kW
Operating Weight
12688 lb
5754 kg
Dig Depth
144.5 in
3670 mm
Overview
The Cat® 305 CR Mini Excavator delivers power and performance in a compact size to help you work in a wide range of applications.
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Exterior
Model shown represents features on all Cat® Mini Excavators except where indicated.
Interior
Model shown represents features on all Cat® Mini Excavators except where indicated.
Features
EASY TO OPERATE
STICK STEER TRAVEL MODE
BIG PERFORMANCE IN A COMPACT DESIGN
SAFETY ON THE JOB SITE
SIMPLE SERVICE FOR LESS DOWNTIME
LOWER OPERATING COSTS
UNMATCHED DEALER SUPPORT
Details
Specifications
Engine
| Spec | Value |
|---|---|
| Net Power | 45 hp 33.6 kW |
| Engine Model | C1.7 Turbo C1.7 Turbo |
| Net Power – 2,400 rpm – ISO 9249, 80/1269/EEC | 45 hp 33.6 kW |
| Note | Advertised power is tested per the specified standard in effect at the time of manufacture. Advertised power is tested per the specified standard in effect at the time of manufacture. |
| Gross Power – 2,400 rpm – SAE J1995:2014 | 48.4 hp 36.1 kW |
| Stroke | 3.9 in 100 mm |
| Bore | 3.3 in 84 mm |
| Displacement | 101 in³ 1.662 l |
| Emissions | The Cat® C1.7 engine meets U.S. EPA Tier 4 Final and EU Stage V emission standards. The Cat® C1.7 engine meets U.S. EPA Tier 4 Final and EU Stage V emission standards. |
| Note (2) | Net power advertised is the power available at the flywheel when the engine is at the rated speed of 2400 rpm and the engine is installed with the factory configured fan, air intake system, exhaust system and alternator with a minimum alternator load. Net power advertised is the power available at the flywheel when the engine is at the rated speed of 2400 rpm and the engine is installed with the factory configured fan, air intake system, exhaust system and alternator with a minimum alternator load. |
Weights
| Spec | Value |
|---|---|
| Operating Weight | 12688 lb 5754 kg |
| Minimum Operating Weight with Canopy* | 11016 lb 4996 kg |
| Note (1) | *Minimum Weight is based on rubber tracks, operator, full fuel tank, standard stick, straight blade, no bucket and no extra counterweight. *Minimum Weight is based on rubber tracks, operator, full fuel tank, standard stick, straight blade, no bucket and no extra counterweight. |
| Minimum Operating Weight with Cab* | 11234 lb 5095 kg |
| Maximum Operating Weight with Cab** | 12688 lb 5754 kg |
| Maximum Operating Weight with Canopy** | 12469 lb 5655 kg |
| Note (2) | **Maximum Weight is based on steel tracks with pads, operator, full fuel tank, long stick, straight blade, extra counterweight and no bucket. **Maximum Weight is based on steel tracks with pads, operator, full fuel tank, long stick, straight blade, extra counterweight and no bucket. |
Dimensions - Long Stick
| Spec | Value |
|---|---|
| Dig Depth | 144.5 in 3670 mm |
| Stick Length | 63 in 1601 mm |
| Track Width | 78 in 1980 mm |
| Maximum Blade Depth | 23.4 in 595 mm |
| Maximum Dump Clearance | 151.4 in 3845 mm |
| Boom Swing – Left | 615 mm 24.2 ° |
| Boom Swing – Right | 34.1 ° 865 mm |
| Swing Bearing – Height | 24.4 in 619 mm |
| Boom Height – Shipping Position | 74.6 in 1895 mm |
| Boom In Reach | 101.6 in 2580 mm |
| Maximum Reach | 235.8 in 5990 mm |
| Track Belt/Shoe Width | 15.7 in 400 mm |
| Maximum Reach – Ground Level | 229.7 in 5835 mm |
| Maximum Blade Height | 15.2 in 385 mm |
| O/A Shipping Height | 100.4 in 2550 mm |
| Tail Swing without Counterweight | 43.1 in 1095 mm |
| O/A Undercarriage Length | 101.6 in 2580 mm |
| Tail Swing with Counterweight | 47.2 in 1200 mm |
| Vertical Wall | 100.8 in 2560 mm |
| Note | *Overall Shipping Length depends on blade position during shipment. *Overall Shipping Length depends on blade position during shipment. |
| Overall Shipping Length* | 210.2 in 5340 mm |
| Maximum Dig Height | 210.8 in 5355 mm |
| Ground Clearance | 13.2 in 335 mm |
Swing System
| Spec | Value |
|---|---|
| Boom Swing – Left | 72 Degrees 72 Degrees |
| Machine Swing Speed | 9 r/min 9 r/min |
| Boom Swing – Right | 50 Degrees 50 Degrees |
Dimensions - Standard Stick
| Spec | Value |
|---|---|
| Maximum Dig Height | 205.3 in 5215 mm |
| Maximum Blade Height | 15.2 in 385 mm |
| Dig Depth | 134.6 in 3420 mm |
| Boom Swing – Right | 34.1 ° 865 mm |
| Maximum Reach – Ground Level | 220.1 in 5590 mm |
| Tail Swing without Counterweight | 43.1 in 1095 mm |
| Boom Height – Shipping Position | 71.7 in 1820 mm |
| Maximum Blade Depth | 23.4 in 595 mm |
| Maximum Reach | 226.6 in 5755 mm |
| Boom Swing – Left | 24.2 ° 615 mm |
| Overall Shipping Length* | 208.9 in 5305 mm |
| O/A Undercarriage Length | 101.6 in 2580 mm |
| Swing Bearing – Height | 24.4 in 619 mm |
| Stick Length | 53.2 in 1351 mm |
| Track Belt/Shoe Width | 15.7 in 400 mm |
| Boom In Reach | 101.2 in 2570 mm |
| Vertical Wall | 91.9 in 2335 mm |
| Tail Swing with Counterweight | 47.2 in 1200 mm |
| Maximum Dump Clearance | 145.7 in 3700 mm |
| O/A Shipping Height | 100.4 in 2550 mm |
| Note | *Overall Shipping Length depends on blade position during shipment. *Overall Shipping Length depends on blade position during shipment. |
| Ground Clearance | 13.2 in 335 mm |
Service Refill Capacities
| Spec | Value |
|---|---|
| Hydraulic Tank | 16 gal (US) 60 l |
| Fuel Tank | 17 gal (US) 63 l |
| Engine Oil | 1.6 gal (US) 6 l |
| Hydraulic System | 20 gal (US) 75 l |
| Cooling System | 2.9 gal (US) 11 l |
Travel System
| Spec | Value |
|---|---|
| Ground Pressure – Minimum Weight | 4 psi 27.3 kPa |
| Maximum Traction Force – Low Speed | 11353 lbf 50.5 kN |
| Ground Pressure – Maximum Weight | 4.7 psi 32.2 kPa |
| Travel Speed – Low | 1.7 mile/h 2.8 km/h |
| Maximum Traction Force – High Speed | 5553 lbf 24.7 kN |
| Travel Speed – High | 3.1 mile/h 5 km/h |
| Gradeability – Maximum | 30 degrees 30 degrees |
Blade
| Spec | Value |
|---|---|
| Angle Blade Width | 78 in 1980 mm |
| Straight Blade Height | 15.4 in 390 mm |
| Straight Blade Width | 78 in 1980 mm |
| Angle Blade Height | 15.7 in 400 mm |
| Angle Blade – Left | 25 degrees 25 degrees |
| Angle Blade – Right | 25 degrees 25 degrees |
Sound
| Spec | Value |
|---|---|
| Average Exterior Sound Pressure (ISO 6395:2008) | 97 dB(A) 97 dB(A) |
| Note | *The declared dynamic operator sound pressure levels per ISO 6396:2008. The measurements were conducted with the cab doors and windows closed. **The labeled sound power level for the CE marked configurations when measured according to the test procedure and conditions specified in 2000/14/EC. *The declared dynamic operator sound pressure levels per ISO 6396:2008. The measurements were conducted with the cab doors and windows closed. **The labeled sound power level for the CE marked configurations when measured according to the test procedure and conditions specified in 2000/14/EC. |
| Operator Sound Pressure (ISO 6396:2008) | 76 dB(A) 76 dB(A) |
Hydraulic System
| Spec | Value |
|---|---|
| Auxiliary Circuit – Secondary – Pressure | 3843 psi 265 bar |
| Pump Flow at 2,400 rpm | 35 gal/min 133 l/min |
| Operating Pressure – Swing | 2901 psi 200 bar |
| Operating Pressure – Travel | 3843 psi 265 bar |
| Auxiliary Circuit – Secondary – Flow | 7 gal/min 28 l/min |
| Digging Force – Stick – Standard | 6362 lbf 28.3 kN |
| Auxiliary Circuit – Primary – Pressure | 3843 psi 265 bar |
| Auxiliary Circuit – Primary – Flow | 21 gal/min 80 l/min |
| Digging Force – Bucket | 11061 lbf 49.2 kN |
| Operating Pressure – Equipment | 3843 psi 265 bar |
| Note | Flow and pressure are not combinable. Under load, as flow rises pressure goes down. Flow and pressure are not combinable. Under load, as flow rises pressure goes down. |
| Type | Load Sensing Hydraulics with Variable Displacement Piston Pump Load Sensing Hydraulics with Variable Displacement Piston Pump |
| Digging Force – Stick – Long | 5665 lbf 25.2 kN |
Certification - Cab and Canopy
| Spec | Value |
|---|---|
| Top Guard | ISO 10262:1998 Level I ISO 10262:1998 Level I |
| Roll Over Protective Structure (ROPS) | ISO 12117-2:2008 ISO 12117-2:2008 |
| Tip Over Protective Structure (TOPS) | ISO 12117:1997 ISO 12117:1997 |
Weight Increase from Minimum Configuration
| Spec | Value |
|---|---|
| Counterweight | 534 lb 242 kg |
| Long Stick | 75 lb 34 kg |
| Steel Tracks with Pads | 827 lb 375 kg |
| Angle Blade | 225 lb 102 kg |
Sustainability
| Spec | Value |
|---|---|
| Recyclability | 96% 96% |
Standard Equipment
ENGINE
- Cat® C1.7 Turbo Engine (U.S. EPA Tier 4 Final)
- 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
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
GUARDING
- ROPS ISO 12117-2:2008
- Top Guard ISO 10262:1998 (Level I)
OTHER
- Eco Drain
OPERATOR ENVIRONMENT
- LED Front and Rear Lights
- LED Boom Light
- Canopy or Cab
- Top Guard ISO 10262:1998 Level I
- ROPS – ISO 12117-2:2008
- TOPS – ISO 12117:1997
- 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
- 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)
UNDERCARRIAGE
- Rubber Belt (400 mm/15.7 in)
- Dozer Straight Blade
- Dozer Blade Float
- Tie Downs on Track Frame
BOOM, STICK AND LINKAGES
- One Piece Boom (2716 mm/106.9 in)
- Standard Stick (1351 mm/53.2 in)
- Front Shovel Capable – Pin-On
- Thumb Ready
- Certified Lifting Eye
ELECTRICAL
- 12 Volt Battery
- Software (machine and monitor)
- Maintenance Free Battery
- Lock Out/Tag Out Battery Disconnect
- 12 Volt Power Socket
- Travel Alarm (optional in some regions)
Optional Equipment
UNDERCARRIAGE
- Steel Track (400 mm/15.7 in)
- Steel Track with Rubber Pads
- Angle Blade
BOOM, STICK AND LINKAGES
- Long Stick (1601 mm/63.0 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
- Stick Lowering Check Valve
- Hydraulic Quick Coupler Lines
ELECTRICAL
- Product Link™ PL243 (regulations apply)
- Product Link PLE643 (regulations apply)
OTHER
- Bio Oil Capable
- Water Jacket Heater
- Counterweight (242 kg/534 lb)
OPERATOR ENVIRONMENT
- 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
- 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 - Seat Belt Reminder System
- Cat Grade with Advanced 2D
- Cat Grade with 3D
GUARDING
- Top Guard ISO 10262:1998 (Level II)
- Front Guard (Mesh) ISO 10262:1998 (Level I)
- Front Guard (Heavy Duty) ISO 10262:1998 (Level II)
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