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Case

CX31B

Mini Excavator

Operating Weight
6,679 lb
Max Digging Depth
110 in
Net Power
28.4 hp
All mini excavators
Case CX31B Mini Excavator
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Image: brokentractor.com

Specifications

44 data points

Operating Specifications

Operating Specifications specifications
Operating Weight6,679 lb
Fuel Capacity10.0 gal
Hydraulic Pump Flow Capacity20.2 gal/min
Hydraulic System Fluid Capacity12.7 gal
Hydraulic System Relief Valve Pressure3,336 psi
Operating Voltage12 V
Alternator Supplied Amperage24 A
Engine Oil Capacity1.8 gal
Cooling System Fluid Capacity1.2 gal

Engine

Engine specifications
Engine ModelYanmar 3TNV88-BPYB
Displacement100 in³
Power Measured @2,400 rpm
Net Power28.4 hp
Number of Cylinders3
Torque Measured @1,440 rpm
Max Torque73 lb-ft
Emissions levelTier 4

Dimensions

Dimensions specifications
Ground Clearance13 in
Height - Top of Cab102 in
Length of Track on Ground61 in
Width to Outside of Tracks61 in
Removal Counterweight Clearance23 in

Undercarriage

Undercarriage specifications
Ground Pressure4 psi
Number of Track Rollers per Side4
Max Travel Speed2.8 mph
Shoe Size12 in
Number of Carrier Rollers per Side1
Drawbar Pull8,655 lb

Boom/Stick Excavator Option 1

Boom/Stick Excavator Option 1 specifications
Max Digging Depth110 in
Max Reach Along Ground186 in
Max Vertical Wall Digging Depth85 in
Max Loading Height132 in
Shipping Length of Unit173 in
Max Cutting Height187 in
Shipping Height of Unit102 in

Bucket

Bucket specifications
Reference Bucket Capacity0.20 yd³
Maximum Bucket Capacity0.20 yd³
Minimum Bucket Capacity0.10 yd³

Boom

Boom specifications
Arm Length53 in
Boom Length97 in

Swing Mechanism

Swing Mechanism specifications
Swing Speed9 rpm

Lift System

Lift System specifications
Bucket Breakout Force6,227 lb
Lift over end Max. reach - lbs1,786 lb
Lift over side Max. reach639 lb

Comparable machines

Other mini excavators in a similar weight class.