310 Mini Hydraulic Excavator

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


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


Operating Weight
22451 lb
Maximum Operating Weight with Cab**
22451 lb
Minimum Operating Weight with Cab*
21170 lb
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.


Dig Depth
205.2 in


17 in
Width - Standard
97.2 in
Width - Wide
103.9 in


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

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)

Hydraulic System

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

Service Refill Capacities

Cooling System
2.6 gal (US)
Engine Oil
3 gal (US)
Fuel Tank
38 gal (US)
Hydraulic System
37 gal (US)
Hydraulic Tank
14 gal (US)

Swing System

Machine Swing Speed
10.6 r/min

Travel System

Gradeability - Maximum
30 degrees
Ground Pressure - Maximum Weight
6.4 psi
Ground Pressure - Minimum Weight
6 psi
Maximum Traction Force - High Speed
6497 lb
Maximum Traction Force - Low Speed
19064 lb
Travel Speed - High
3.1 mile/h
Travel Speed - Low
1.6 mile/h

Weight Increase from Minimum Configuration

552 lb
Steel Tracks with Pads
728 lb

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 - Standard Stick

Height - Boom Working - With Tools**
106.3 in
Height - Boom Transport - No Tools*
100.4 in
Overall Shipping Length - without Counterweight
269.7 in
Note (1)
*Boom Height when stick is pinned in transport position (if available) with no attachments.
Note (2)
**Boom Height when stick is pinned in working position with attachments.
Overall Shipping Length - with Counterweight
274.9 in
Swing Bearing - Height
28.9 in
Maximum Reach - Ground Level
298 in
Vertical Wall
172.6 in
O/A Undercarriage Length
126 in
Tail Swing - Standard Counterweight
76.1 in
Maximum Blade Height
16.6 in
Maximum Dig Height
313.8 in
Maximum Blade Depth
18.8 in
Maximum Dump Clearance
229.5 in
Track Belt/Shoe Width
17.7 in
Cab Height
100 in
O/A Track Width
97.2 in
Dig Depth
205.2 in
Ground Clearance - Frame
14 in
Maximum Reach
303 in
Stick Length
98.4 in
Boom In Reach
83.3 in
Tail Swing without Counterweight
70.9 in