310 Mini Hydraulic Excavator

The 310 Mini Excavator delivers power and performance in an 8 ton size class to help you work in a wide range of applications.

310 Mini Hydraulic Excavator


The Cat® 310 Mini Excavator delivers maximum power and performance in a mini size to help you work in a wide range of applications.The Cat® 310 Mini Excavator delivers maximum power and performance in a mini size to help you work in a wide range of applications.


  • A sealed and pressurized cab is equipped with an improved air conditioning system, adjustable wrist rests and a suspension seat to help keep you working comfortably all day long.

310 Mini Excavator
310 Mini Excavator


  • Controls are easy to use and the intuitive Next Generation Monitor provides customizable machine operator preferences and easy to read machine information.


  • 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 with a push of a button. The benefit of less effort and improved control is in your hands!

310 Mini Excavator
310 Mini Excavator


  • Increased lifting, swinging, travel and multi-functioning performance helps you get the job done more efficiently, and blade float allows for easy clean up.


  • Your safety is our top priority. The Cat Mini Excavator is designed to help keep you safe on the job. A back-up camera, courtesy work lights and a fluorescent retractable seat belt are just a few of the safety features we've built into the machine.

310 Mini Excavator
310 Mini Excavator


  • Maintenance is quick and easy on the Cat Mini Excavator. Routine check points are easy to access at ground level with grouped service points and robust service panels.


  • 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.

310 Mini Excavator


  • Your Cat dealer is here to help you reach your business goals. From providing equipment solutions to operator training to service needs and beyond, your Cat dealer is ready to help.


  • The Cat® C3.3B 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).
*Engines with no aftertreatment devices can use higher blends, up to 100% biodiesel. (for use of blends higher than 20% biodiesel, consult your Cat dealer)

310 Mini Excavator
  • Standard Equipment
  • Optional Equipment
  • Specs
  • Docs

Standard Equipment

    • Cat C3.3B Diesel Engine (U.S. EPA Tier 4 Final/EU Stage V) – Electronic Engine, Turbo, Diesel Particulate Filter (DPF)
    • Automatic Engine Idle
    • Automatic Engine Shutdown
    • Automatic Swing Brake
    • Automatic Two Speed Travel
    • Fuel Water Separator with Indicator
    • Radial Seal – Double Element Air Filter
    • Extended Life Coolant, –37° C ( –37° F)
    • Electronic Variable Displacement Piston Pump
    • Load Sensing/Flow Sharing Hydraulics
    • Power On Demand
    • Hydraulic Temperature Monitoring
    • Certified Accumulator
    • HYDO Advanced Hydraulic Oil
    • Top Guard ISO 10262 1998 Level I
    • TOPS – ISO 12117:1997
    • ROPS ISO 12117-2:2008
    • Stick Steer Mode
    • Travel Cruise Control
    • Control Pattern Changer
    • Adjustable Wrist Rests
    • Molded Footrests
    • Removable, Washable Floor Mat
    • Travel Pedals and Hand Levers
    • Cat Key with Passcode Option
    • HVAC with Automatic Temperature Control
    • Hydraulic Lockout Controls
    • Integrated Lower Front Window
    • Assisted Front Window Overhead Storage
    • Rear Window Emergency Exit
    • Fabric, High Back, Suspension Seat
    • Retractable Seat Belt (75 mm/3 in)
    • Coat Hook
    • Cup Holder
    • LED Interior Light
    • Literature Holder
    • Mounting Bosses for Top and Front Guards
    • 12V Power Socket
    • Radio – Bluetooth, Auxiliary, Microphone, USB (charging only)
    • Skylight
    • Signaling/Warning Horn
    • Cab and (left side) Boom Work Lights
    • Utility Space for Mobile Phone
    • Next Generation Color LCD Monitor (IP66)
      – Jog Dial Interface
      – Fuel Level and Coolant Temperature Gauges
      – Maintenance and Machine Monitoring
      – Performance and Machine Adjustments
      – Numeric Security Code
      – Multiple Languages
      – Camera Ready (IP68 & IP69K)
      – Hour Meter with Wake Up Switch
    • Greased and Lubricated Track
    • Tie Down Eyes on Track Frame
    • Dozer Straight Blade
    • Dozer Float
    • Bolt-on, Reversible Wear Edge
    • One Piece Boom (4300 mm/169.3 in)
    • Front Shovel Capable – Pin-on/Manual Coupler/Hydraulic Coupler for Cat Tools (not available in all regions)
    • Thumb Ready (not available in all regions)
    • 12 Volt Electrical System
    • 90 Ampere Alternator
    • 900 CCA Maintenance Free Battery
    • Battery Disconnect
    • Ignition Key Stop Switch
    • Travel Alarm
    • Locks on External Enclosure Doors
    • Lockable Fuel Cap
    • Beacon Socket
    • Rear Reflectors

Optional Equipment

    • Push to Start with Bluetooth® Key
    • Air Suspension Heated Seat
    • Rain Visor
    • Next Generation Advanced Monitor (below are all included with Next Generation Advanced Monitor option)
      – Touch Screen
      – Site Reference System
      – High Definition Camera Capable (IP68 & IP69K)
      – Numeric Security Code
    • Wide Dozer Blade
    • Steel Tracks (450 mm/17.7 in wide)
    • Wide Steel Tracks (600 mm/23.6 in)
    • Steel Track with Rubber Pads
    • Track Guides
    • Long Stick (2500 mm/98.4 in)
    • Attachments including Buckets, Augers and Hammers
    • 2nd Auxiliary Hydraulic Lines
    • Boom Lowering Check Valve
    • Stick Lowering Check Valve
    • Certified Lifting Eye
    • Product Link Elite (regulations apply)
    • Rearview Camera
    • Rotating Beacon
    • Mesh Front Guard ISO 10262 1998 Level I
    • Heavy Duty Front Guard ISO 10262 1998 Level II
    • Top Cab Guard ISO 10262 1998 Level II
    • Polycarbonate Front Window EN356 P5A (Cab Only)
    • Water Jacket Heater
    • Refueling Pump



Long Name:
310 Mini Hydraulic Excavator


Net Power
69.5 HP / 51.8 kW
4.7 in / 120 mm
Net power advertised is the power available at the flywheel when the engine is equipped with air cleaner, exhaust system and fan.
3.7 in / 94 mm
203 in³ / 3.33 l
Gross Power - SAE J1995:2014
74.3 HP / 55.4 kW
Engine Model - U.S. EPA Tier 4 Final/EU Stage V
Cat® C3.3B
Net Power - 2,200 rpm - ISO 9249:2007, 80/1269/EEC
69.5 HP / 51.8 kW


Operating Weight
22451 lb / 10182 kg
Minimum Operating Weight with Cab*
21170 lb / 9601 kg
Maximum Operating Weight with Cab**
22451 lb / 10182 kg
Note (2)
**Maximum Weight is based on steel tracks with rubber pads, counterweight, operator, full fuel tank, long stick, blade and no bucket.
Note (1)
*Minimum Weight is based on steel tracks, no counterweight, operator, full fuel tank, long stick, blade and no bucket.

Weight Increase from Minimum Configuration

552 lb / 250 kg
Steel Tracks with Pads
728 lb / 330 kg

Travel System

Maximum Traction Force - Low Speed
19064 lb / 84.8 kN
Maximum Traction Force - High Speed
6497 lb / 28.9 kN
Travel Speed - High
3.1 mile/h / 4.9 km/h
Travel Speed - Low
1.6 mile/h / 2.6 km/h
Ground Pressure - Maximum Weight
6.4 psi / 44.2 kPa
Ground Pressure - Minimum Weight
6 psi / 41.68 kPa
Gradeability - Maximum
30 degrees

Service Refill Capacities

Hydraulic Tank
14 gal (US) / 53 l
Cooling System
2.6 gal (US) / 10 l
Engine Oil
3 gal (US) / 11.2 l
Fuel Tank
38 gal (US) / 145 l
Hydraulic System
37 gal (US) / 140 l

Hydraulic System

Operating Pressure - Swing
3336 psi / 230 bar
Digging Force - Bucket
17459 lb / 77.7 kN
Operating Pressure - Travel
4134 psi / 285 bar
Operating Pressure - Equipment
4134 psi / 285 bar
Flow and pressure are not combinable. Under load, as flow rises pressure goes down.
Digging Force - Stick
11060 lb / 49.2 kN
Load Sensing Hydraulics with Variable Displacement Piston Pump
Pump Flow at 2,400 rpm
62 gal/min / 233 l/min
Maximum Auxiliary Circuit - Secondary - Flow at Pump
9 gal/min / 33 l/min
Maximum Auxiliary Circuit - Primary - Pressure at Pump
4134 psi / 285 bar
Maximum Auxiliary Circuit - Secondary - Pressure at Pump
4134 psi / 285 bar
Maximum Auxiliary Circuit - Primary - Flow at Pump
35 gal/min / 131 l/min

Swing System

Machine Swing Speed
10.6 r/min / 10.6 r/min


17 in / 431 mm
Width - Standard
97.2 in / 2470 mm
Width - Wide
103.9 in / 2640 mm

Certification - Cab

Top Guard
ISO 10262:1998 (Level I)
Roll Over Protective Structure (ROPS)
ISO 12117-2:2008
Tip Over Protective Structure (TOPS)
ISO 12117:1997


Average Exterior Sound Pressure (ISO 6395:2008)
99 dB(A) / 99 dB(A)
Operator Sound Pressure (ISO 6396:2008)
72 dB(A) / 72 dB(A)
European Union Directive "2000/14/EC"


Dig Depth
205.2 in / 5211 mm

Dimensions - Standard Stick

Tail Swing without Counterweight
70.9 in / 1800 mm
Stick Length
98.4 in / 2500 mm
Boom In Reach
83.3 in / 2116 mm
Maximum Reach
303 in / 7695 mm
Dig Depth
205.2 in / 5211 mm
Ground Clearance - Frame
14 in / 356 mm
O/A Track Width
97.2 in / 2470 mm
Cab Height
100 in / 2541 mm
Track Belt/Shoe Width
17.7 in / 450 mm
Maximum Blade Depth
18.8 in / 478 mm
Maximum Dump Clearance
229.5 in / 5829 mm
Maximum Dig Height
313.8 in / 7970 mm
Maximum Blade Height
16.6 in / 421 mm
Tail Swing - Standard Counterweight
76.1 in / 1933 mm
O/A Undercarriage Length
126 in / 3200 mm
Vertical Wall
172.6 in / 4385 mm
Swing Bearing - Height
28.9 in / 735 mm
Maximum Reach - Ground Level
298 in / 7570 mm
Overall Shipping Length - with Counterweight
274.9 in / 6983 mm
Note (2)
**Boom Height when stick is pinned in working position with attachments.
Note (1)
*Boom Height when stick is pinned in transport position (if available) with no attachments.
Overall Shipping Length - without Counterweight
269.7 in / 6850 mm
Height - Boom Transport - No Tools*
100.4 in / 2550 mm
Height - Boom Working - With Tools**
106.3 in / 2700 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.