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


Engine Model
Cat C3.3B
Net Power
69.50 HP
51.80 kW


Operating Weight
22451.00 lb
10182.00 kg


17.00 in
431.00 mm
Width - Standard
97.20 in
2470.00 mm
Width - Wide
103.90 in
2640.00 mm

Certification - Cab

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


Boom Swing Left
0.00 °
0.00 °
Boom Swing Right
0.00 °
0.00 °
Boom in Reach
90.00 in
2272.00 mm
Cab Height
103.00 in
2607.00 mm
Dig Depth
205.20 in
5211.00 mm
Ground Clearance
14.00 in
356.00 mm
Maximum Blade Depth
26.00 in
671.00 mm
Maximum Blade Height
14.00 in
355.00 mm
Maximum Dig Height
314.00 in
7970.00 mm
Maximum Dump Clearance
230.00 in
5829.00 mm
Maximum Reach
301.00 in
7644.00 mm
Maximum Reach - Ground Level
296.00 in
7518.00 mm
Overall Shipping Length
259.00 in
6579.00 mm
Overall Track Width
97.00 in
2470.00 mm
Overall Undercarriage Length
126.00 in
3200.00 mm
Stick Length
98.00 in
2500.00 mm
Swing Bearing Height
32.00 in
822.00 mm
Tail Swing with Counterweight
79.00 in
1995.00 mm
Tail Swing without Counterweight
71.00 in
1800.00 mm
Track Belt/Shoe Width
18.00 in
450.00 mm
Transport Height
114.00 in
2884.00 mm
Vertical Wall
192.00 in
4873.00 mm


3.70 in
94.00 mm
203.00 in³
3.33 l
Gross Power - ISO 14396
74.30 HP
55.40 kW
Rated Net Power - 2,200 rpm - EU Stage V - ISO 9249/EEC 80/1269
71.50 HP
53.30 kW
Rated Net Power - 2,200 rpm - U.S. EPA Tier 4 Final - ISO 9249/EEC 80/1269
70.30 HP
52.40 kW
4.70 in
120.00 mm

Hydraulic System

Auxiliary Circuit - Primary - Flow
35.00 gal/min
131.00 l/min
Auxiliary Circuit - Primary - Pressure
4134.00 psi
285.00 bar
Auxiliary Circuit - Secondary - Flow
9.00 gal/min
33.00 l/min
Auxiliary Circuit - Secondary - Pressure
4134.00 psi
285.00 bar
Digging Force - Bucket
17459.00 lb
77.70 kN
Digging Force - Stick
11060.00 lb
49.20 kN
Operating Pressure - Equipment
4134.00 psi
285.00 bar
Operating Pressure - Swing
3336.00 psi
230.00 bar
Operating Pressure - Travel
4134.00 psi
285.00 bar
Pump Flow at 2,400 rpm
62.00 gal/min
233.00 l/min
Load Sensing Hydraulics with Variable Displacement Piston Pump

Service Refill Capacities

Cooling System
2.60 gal (US)
10.00 l
Engine Oil
3.00 gal (US)
11.20 l
Fuel Tank
38.00 gal (US)
145.00 l
Hydraulic System
37.00 gal (US)
140.00 l
Hydraulic Tank
14.00 gal (US)
53.00 l


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

Swing System

Machine Swing Speed
10.60 r/min
10.60 r/min

Travel System

Gradeability - Maximum
30 degrees
Ground Pressure - Maximum Weight
6.40 psi
44.20 kPa
Ground Pressure - Minimum Weight
6.00 psi
41.68 kPa
Maximum Traction Force - High Speed
6497.00 lb
28.90 kN
Maximum Traction Force - Low Speed
19064.00 lb
84.80 kN
Travel Speed - High
3.10 mile/h
4.90 km/h
Travel Speed - Low
1.60 mile/h
2.60 km/h

Weight Increase from Minimum Configuration

552.00 lb
250.00 kg
Steel Tracks with Pads
728.00 lb
330.00 kg


Maximum Operating Weight with Cab**
22451.00 lb
10182.00 kg
Minimum Operating Weight with Cab*
21170.00 lb
9601.00 kg
Note (1)
*Minimum Weight is based on steel tracks, no counterweight, operator, full fuel tank, long stick, blade and no bucket.
Note (2)
**Maximum Weight is based on steel tracks with rubber pads, counterweight, operator, full fuel tank, long stick, blade and no bucket.


Net power advertised is the power available at the flywheel when the engine is equipped with air cleaner, exhaust system and fan.
Gross Power - SAE J1995:2014
74.30 HP
55.40 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
69.50 HP
51.80 kW

Hydraulic System

Flow and pressure are not combinable. Under load, as flow rises pressure goes down.
Maximum Auxiliary Circuit - Secondary - Flow at Pump
9.00 gal/min
33.00 l/min
Maximum Auxiliary Circuit - Primary - Pressure at Pump
4134.00 psi
285.00 bar
Maximum Auxiliary Circuit - Secondary - Pressure at Pump
4134.00 psi
285.00 bar
Maximum Auxiliary Circuit - Primary - Flow at Pump
35.00 gal/min
131.00 l/min

Dimensions - Standard Stick

Tail Swing without Counterweight
70.90 in
1800.00 mm
Stick Length
98.40 in
2500.00 mm
Boom In Reach
83.30 in
2116.00 mm
Maximum Reach
303.00 in
7695.00 mm
Dig Depth
205.20 in
5211.00 mm
Ground Clearance - Frame
14.00 in
356.00 mm
O/A Track Width
97.20 in
2470.00 mm
Cab Height
100.00 in
2541.00 mm
Track Belt/Shoe Width
17.70 in
450.00 mm
Maximum Blade Depth
18.80 in
478.00 mm
Maximum Dump Clearance
229.50 in
5829.00 mm
Maximum Dig Height
313.80 in
7970.00 mm
Maximum Blade Height
16.60 in
421.00 mm
Tail Swing - Standard Counterweight
76.10 in
1933.00 mm
O/A Undercarriage Length
126.00 in
3200.00 mm
Vertical Wall
172.60 in
4385.00 mm
Swing Bearing - Height
28.90 in
735.00 mm
Maximum Reach - Ground Level
298.00 in
7570.00 mm
Overall Shipping Length - with Counterweight
274.90 in
6983.00 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
269.70 in
6850.00 mm
Height - Boom Transport - No Tools*
100.40 in
2550.00 mm
Height - Boom Working - With Tools**
106.30 in
2700.00 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.




Note 1
Advertised power is tested per the specified standard in effect at the time of manufacture.


  • 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.


  • 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!


  • 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.


  • 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.


  • 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)
Standard Equipment
    • Roll Over Protective Structure (ROPS) ISO 12117-2:2008
    • Top Guard ISO 10262:1998 (Level I)
    • 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
    • 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
    • Top Guard ISO 10262:1998 (Level II)
    • Front Guard (Mesh) ISO 10262:1998 (Level I)
    • Front Guard (Heavy Duty) ISO 10262:1998 (Level II)
    • Water Jacket Heater
    • Refueling Pump