The Cat® 309 CR Variable Angle Boom (VAB) Mini Excavator delivers maximum power and performance in a mini size to help you work in a wide range of applications. The Variable Angle Boom provides the maximum in linkage flexibility in tight applications.The 309 CR also features high flow hydraulics to handle power hungry attachments such as mulchers and brushcutters.
| Specifications | |
|---|---|
| Note | The 309 CR VAB specifications are based on a machine configured with a Long (L) Undercarriage. For specifications representing a 309 CR VAB with a Standard Undercarriage, please refer to the 308 CR information. |
| Engine | |
|---|---|
| Net Power | 69.5 HP / 51.8 kW |
| Displacement | 203 in³ / 3.33 l |
| Stroke | 4.7 in / 120 mm |
| Bore | 3.7 in / 94 mm |
| Gross Power - SAE J1995 | 74.3 HP / 55.4 kW |
| Note | Net power advertised is the power available at the flywheel when the engine is equipped with air cleaner, exhaust system and fan. |
| Net Power - 2,200 rpm - ISO 9249:2007, 80/1269/EEC | 69.5 HP / 51.8 kW |
| Engine Model - U.S. EPA Tier 4 Final/EU Stage V | Cat C3.3B |
| Weights | |
|---|---|
| Operating Weight | 21477 lb / 9740 kg |
| Note (1) | *Minimum Weight is based on rubber tracks, no counterweight, operator, full fuel tank, standard stick, blade and no bucket. |
| Note (2) | **Maximum Weight is based on steel tracks with rubber pads, counterweight, operator, full fuel tank, standard stick, blade and no bucket. |
| Minimum Operating Weight* | 20121 lb / 9125 kg |
| Maximum Operating Weight* | 21477 lb / 9740 kg |
| Weight Increase from Minimum Configuration | |
|---|---|
| Steel Tracks with Pads | 728 lb / 330 kg |
| Counterweight | 552 lb / 250 kg |
| Standard Stick | 77 lb / 35 kg |
| Travel System | |
|---|---|
| Ground Pressure - Minimum Weight | 5.1 psi / 35.4 kPa |
| Travel Speed - High | 3.1 mile/h / 4.9 km/h |
| Maximum Traction Force - High Speed | 6497 lbf / 28.9 kN |
| Travel Speed - Low | 1.6 mile/h / 2.6 km/h |
| Ground Pressure - Maximum Weight | 5.5 psi / 37.8 kPa |
| Maximum Traction Force - Low Speed | 19064 lbf / 84.8 kN |
| Gradeability - Maximum | 30 degrees |
| Service Refill Capacities | |
|---|---|
| Fuel Tank | 39 gal (US) / 147 l |
| Hydraulic System | 29 gal (US) / 110 l |
| Engine Oil | 3 gal (US) / 11.2 l |
| Cooling System | 2.6 gal (US) / 10 l |
| Hydraulic Tank | 14 gal (US) / 53 l |
| Hydraulic System | |
|---|---|
| Operating Pressure - Travel | 4134 psi / 285 bar |
| Type | Load Sensing Hydraulics with Variable Displacement Piston Pump |
| Digging Force - Stick - Standard | 9509 lbf / 42.3 kN |
| Digging Force - Bucket | 13946 lbf / 62 kN |
| Pump Flow at 2,400 rpm | 62 gal/min / 233 l/min |
| Operating Pressure - Swing | 3626 psi / 250 bar |
| Note | Flow and pressure are not combinable. Under load, as flow rises pressure goes down. |
| Operating Pressure - Equipment | 4134 psi / 285 bar |
| Maximum Auxiliary Circuit - Secondary - Flow at Pump | 9 gal/min / 33 l/min |
| Maximum Auxiliary Circuit - Secondary - Pressure at Pump | 4134 psi / 285 bar |
| Maximum Auxiliary Circuit - Primary - Flow at Pump | 35 gal/min / 131 l/min |
| Maximum Auxiliary Circuit - Primary - Pressure at Pump | 4134 psi / 285 bar |
| Maximum Auxiliary Circuit - Primary (High Flow) - Pressure at Pump | 4134 psi / 285 bar |
| Maximum Auxiliary Circuit - Primary (High Flow) - Flow at Pump | 37 gal/min / 140 l/min |
| Swing System | |
|---|---|
| Machine Swing Speed | 10.6 r/min |
| Boom Swing - Left | 60 degrees |
| Boom Swing - Right | 50 degrees |
| Blade | |
|---|---|
| Height | 17 in / 431 mm |
| Width - Wide | 103.9 in / 2640 mm |
| Width - Standard | 97.2 in / 2470 mm |
| Certification - Cab | |
|---|---|
| Top Guard | ISO 10262:1998 (Level II) |
| Roll Over Protective Structure (ROPS) | ISO 12117-2:2008 |
| Tip Over Protective Structure (TOPS) | ISO 12117:1997 |
| Sound | |
|---|---|
| Average Exterior Sound Pressure (ISO 6395:2008) | 99 dB(A) |
| Operator Sound Pressure (ISO 6396:2008) | 72 dB(A) |
| Note | European Union Directive "2000/14/EC" |
| Dimensions - VAB In | |
|---|---|
| Dig Depth | 150.2 in / 3815 mm |
| Cab Height | 100 in / 2541 mm |
| Maximum Blade Depth | 19.1 in / 484 mm |
| Maximum Blade Height | 16.1 in / 408 mm |
| Stick Length | 71.7 in / 1820 mm |
| Maximum Reach | 256.5 in / 6515 mm |
| Tail Swing without Counterweight | 57.1 in / 1450 mm |
| Vertical Wall | 99.2 in / 2520 mm |
| Swing Bearing Height | 29.8 in / 756 mm |
| Track Belt/Shoe Width | 17.7 in / 450 mm |
| Boom Swing Right | 37 in / 935 mm |
| Overall Track Width | 97.2 in / 2470 mm |
| Overall Shipping Length | 255.7 in / 6495 mm |
| Maximum Dump Clearance | 135.8 in / 3450 mm |
| Boom in Reach | 122.8 in / 3120 mm |
| Maximum Reach at Ground Level | 248 in / 6300 mm |
| Transport Height | 97.4 in / 2475 mm |
| Overall Undercarriage Length | 126 in / 3200 mm |
| Ground Clearance | 14 in / 356 mm |
| Tail Swing with Counterweight | 62.4 in / 1585 mm |
| Maximum Dig Height | 205.5 in / 5220 mm |
| Boom Swing Left | 24 in / 605 mm |
| 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 1.430 metric tonnes. |
| Dimensions - VAB Out | |
|---|---|
| Ground Clearance | 14 in / 356 mm |
| Cab Height | 100 in / 2541 mm |
| Boom in Reach | 106.7 in / 2710 mm |
| Vertical Wall | 146.7 in / 3725 mm |
| Swing Bearing Height | 29.8 in / 756 mm |
| Maximum Dump Clearance | 247.4 in / 6285 mm |
| Overall Undercarriage Length | 126 in / 3200 mm |
| Maximum Reach at Ground Level | 303.7 in / 7715 mm |
| Tail Swing without Counterweight | 57.1 in / 1450 mm |
| Maximum Reach | 310.4 in / 7885 mm |
| Track Belt/Shoe Width | 17.7 in / 450 mm |
| Overall Shipping Length | 255.7 in / 6495 mm |
| Maximum Blade Depth | 19.1 in / 484 mm |
| Maximum Dig Height | 322 in / 8180 mm |
| Overall Track Width | 97.2 in / 2470 mm |
| Tail Swing with Counterweight | 62.4 in / 1585 mm |
| Stick Length | 71.7 in / 1820 mm |
| Maximum Blade Height | 16.1 in / 408 mm |
| Boom Swing Right | 37 in / 935 mm |
| Boom Swing Left | 24 in / 605 mm |
| Transport Height | 97.4 in / 2475 mm |
| Dig Depth | 136.2 in / 3460 mm |
| Sustainability | |
|---|---|
| Recyclability | 96% |
| Model | Working Width | Required Hydraulics | Overall Width |
|---|---|---|---|
| HMF210 | 39.4 in / 1000 mm | Standard Flow | 46.6 in / 1184 mm |
| Model | Width | Capacity | Weight |
|---|---|---|---|
| 330 mm (13 in) | 13 in / 330 mm | 3.5 ft³ / 99.09 l | 299.8 lb / 136 kg |
| 457 mm (18 in) | 18 in / 457 mm | 5.3 ft³ / 150.1 l | 332.9 lb / 151 kg |
| 610 mm (24 in) | 24 in / 610 mm | 8.1 ft³ / 229.39 l | 392.4 lb / 178 kg |
| 762 mm (30 in) | 30 in / 762 mm | 10.9 ft³ / 308.7 l | 456.4 lb / 207 kg |
| 914 mm (36 in) | 36 in / 914 mm | 13.7 ft³ / 387.89 l | 507.1 lb / 230 kg |
| Model | Drive Shaft Torque at Maximum Pressure | Drive Method | Mounting Bracket Design |
|---|---|---|---|
| A68 | 5034.6 lb/ft / 6826 N·m | Gerotor Motor - Double Planetary Reduction | 8 Ton Mini Excavator Pin On |
| Model | Width | Capacity | Weight |
|---|---|---|---|
| 1219 mm (48 in) | 48 in / 1219 mm | 11.6 ft³ / 328.79 l | 477.1 lb / 216.39 kg |
| 1372 mm (54 in) | 54 in / 1372 mm | 13.2 ft³ / 374.6 l | 517 lb / 234.5 kg |
| 1524 mm (60 in) | 60 in / 1524 mm | 14.8 ft³ / 420.5 l | 557.1 lb / 252.69 kg |
| Model | Overall Width | Working Width | Length |
|---|---|---|---|
| HM208 | 40.4 in / 1026 mm | 32.2 in / 818 mm | 28.1 in / 714 mm |
| HM210 | 48.3 in / 1226 mm | 39.8 in / 1012 mm | 28.1 in / 714 mm |
| Model | Width | Capacity | Weight |
|---|---|---|---|
| 1200 mm (47 in) | 47.2 in / 1200 mm | 14.5 ft³ / 410.6 l | 615.3 lb / 279.1 kg |
| 1500 mm (59 in) | 59.1 in / 1500 mm | 18.4 ft³ / 521 l | 761.9 lb / 345.6 kg |
| Model | Width | Capacity | Weight |
|---|---|---|---|
| 610 mm (24 in) | 24 in / 610 mm | 8.1 ft³ / 229.39 l | 427.7 lb / 194 kg |
| 762 mm (30 in) | 30 in / 762 mm | 10.9 ft³ / 308.7 l | 491.6 lb / 223 kg |
| Model | Weight | Width | Length |
|---|---|---|---|
| 8 Ton Mini Excavators Hydraulic | 211.6 lb / 96 kg | 14.6 in / 370 mm | 23.4 in / 595 mm |
| Model | Width | Capacity | Weight |
|---|---|---|---|
| 300 mm (12 in), Pin Lock | 11.8 in / 300 mm | 3.4 ft³ / 96 l | 249.1 lb / 113 kg |
| 406 mm (16 in), Pin Lock | 16 in / 406 mm | 4.2 ft³ / 120 l | 297.6 lb / 135 kg |
| 457 mm (18 in), Pin Lock | 18 in / 457 mm | 4.9 ft³ / 139 l | 304.2 lb / 138 kg |
| 610 mm (24 in), Pin Lock | 24 in / 610 mm | 7.3 ft³ / 207 l | 370.4 lb / 168 kg |
| 762 mm (30 in), Pin Lock | 30 in / 762 mm | 9.9 ft³ / 280 l | 443.1 lb / 201 kg |
| 914 mm (36 in), Pin Lock | 36 in / 914 mm | 12 ft³ / 340 l | 509.3 lb / 231 kg |
| Model | Width | Capacity | Weight |
|---|---|---|---|
| 406 mm (16 in), Pin Lock | 16 in / 406 mm | 5.7 ft³ / 160 l | 337.3 lb / 153 kg |
| 457 mm (18 in), Pin Lock | 18 in / 457 mm | 6.4 ft³ / 180 l | 357.1 lb / 162 kg |
| 610 mm (24 in), Pin Lock | 24 in / 610 mm | 9.2 ft³ / 260 l | 427.7 lb / 194 kg |
| 762 mm (30 in), Pin Lock | 30 in / 762 mm | 12.7 ft³ / 360 l | 489.4 lb / 222 kg |
| 914 mm (36 in), Pin Lock | 36 in / 914 mm | 16.2 ft³ / 460 l | 560 lb / 254 kg |
| Model | Shank Length | Weight | Overall Length |
|---|---|---|---|
| 861 mm (34 in) | 33.9 in / 861 mm | 235.9 lb / 107 kg | 42 in / 1066.09 mm |
| Model | Tip Force | Rotation | Jaw Opening |
|---|---|---|---|
| S308 | 43.3 Sh Ton / 385 kN | 360 Degrees | 9.4 in / 240 mm |
| Model | Impulse Force | Impact Frequency | Base Plate Width |
|---|---|---|---|
| CVP40 | 8992.36 lb / 40 kN | 2200 bpm | 23.2 in / 590 mm |
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