Machine models

Cat 311C U and E110B specifications

Entries in this reference
Listing-entry count
2

Short answer

Cat 311C U and E110B: full-size excavators.

Selected configuration figures
Configuration	Documented field and quantity
311C U	Gross Power 79.2 hp Operating Weight 26,411 lb
E110B	Gross Power 79.2 hp Operating Weight 25,574 lb

311C U and E110B specification matrix — Listing labels reported by the source
Publisher name	Source guide	Listing-entry count	Labels named by the source
Cat	311C U and E110B	2	311C U and E110B

Boom/Stick Option (Hex) 1
Specification	311C U
Shipping Length Of Unit	22.68 ft
Shipping Height Of Unit	9.09 ft

Specification	311C U	E110B
Max Loading Height	18.94 ft	17.36 ft
Max Reach Along Ground	26.58 ft	23.94 ft
Max Vertical Wall Digging Depth	16.21 ft	13.87 ft
Max Digging Depth	18.34 ft	15.59 ft

Specification	E110B
Max Cutting Height	25.12 ft
Boom/Stick Option (Hex) 1	Stick 6'5" (1950mm)

Specification	E110B
Height To Top Of Cab	8.86 ft
Removal Counterweight Clearance	3.02 ft

Undercarriage
Specification	311C U	E110B
Shoe Size	19.69 in	19.69 in
Max Travel Speed	3.48 mph	3.11 mph

Specification	311C U	E110B
Gross Power	79.2 hp	79.2 hp
Displacement	259.4 cu in	268.6 cu in

Operational
Specification	311C U	E110B
Operating Weight	26,411 lb	25,574 lb
Hydraulic System Relief Valve Pressure	4,975 psi	4,270 psi
Hydraulic Pump Flow Capacity	57.1 gpm	56.6 gpm

Specification	E110B
Fuel Capacity	66.1 gal
Hydraulic System Fluid Capacity	42.3 gal

Buckets
Specification	311C U
Reference Bucket Capacity	0.7 yd3

Variants — Source comparison annotation
Source guide	Differing-field count reported
311C U and E110B	26

Ratios
Figure	311C U	E110B
Engine horsepower per 1,000 lb of weight	3.0	3.1
Hydraulic power from the listed pump flow and relief pressure	165.7 hp	141.0 hp

Figure	E110B
Fuel tank per engine horsepower	0.83 gal

311C U and E110B: owner reports

Sources: 3 forum discussions about the Caterpillar 311 excavators (311B, 311C); heavyequipmentforums.com.

311C U and E110B: forum references — Forum-title search
Forum index	Equipment class queried	Names in the search	Matching titles
Heavy Equipment Forums	full-size excavator	Cat and the 311C U, E110B	25

Topics named by those titles
Title topic	Titles
hydraulics	5
tracks and undercarriage	2

Topic in the title	Threads	Share of matching threads
hydraulics	5	20%
tracks and undercarriage	2	8%

Used market for the 311C U and E110B — Dated first-page listing snapshot
Observation date	Listing source	Equipment search	Listings
2026-09-24	MachineryTrader	Cat full-size excavator	7

Model	Listed	Model years	Lowest asking	Highest asking	Median asking	Median hours
311C U	7	2002 to 2007	$11,853	$69,500	$29,999	1,046

311C U and E110B: recall reference — Dated CPSC search
Search date	Database	Names queried	Search result
2026-09-24	U.S. Consumer Product Safety Commission	Cat together with the full-size excavator 311C U, E110B	No matching recall in this search

Sources for this page
Evidence class	Document, classification and recorded date
Reference site	Reference site: Cat 311C U — RitchieSpecs. Observed 2026-09-24.
Reference site	Reference site: Cat E110B — RitchieSpecs. Observed 2026-09-24.
Forum threads	Forum threads: Heavy Equipment Forums thread index for Cat 311C U and E110B — Heavy Equipment Forums. Observed 2026-09-24.
Forum threads	Forum threads: Forum threads read for the Caterpillar 311 excavators (311B, 311C) — Heavyequipmentforums. Observed 2026-09-24.
Used-market listings	Used-market listings: MachineryTrader listings for Cat 311C U — MachineryTrader. Observed 2026-09-24.
Federal agency data	Federal agency data: Recall database search for Cat — U.S. Consumer Product Safety Commission. Observed 2026-09-24.

311C U

Specification	Source figure
Boom/Stick Option (Hex) 1
Shipping Length Of Unit	22.68 ft
Shipping Height Of Unit	9.09 ft
Max Loading Height	18.94 ft
Max Reach Along Ground	26.58 ft
Max Vertical Wall Digging Depth	16.21 ft
Max Digging Depth	18.34 ft
Dimensions and weight
Ground Clearance	1.5 ft
Width To Outside Of Tracks	8.17 ft
Length Of Track On Ground	8.57 ft
Tail Swing Radius	5.75 ft
Undercarriage
Shoe Size	19.69 in
Max Travel Speed	3.48 mph
Engine
Number Of Cylinders	4
Engine Model	3064T
Gross Power	79.2 hp
Power Measured @	1,800 rpm
Displacement	259.4 cu in
Operational
Operating Weight	26,411 lb
Hydraulic System Relief Valve Pressure	4,975 psi
Hydraulic Pump Flow Capacity	57.1 gpm
Buckets
Reference Bucket Capacity	0.7 yd3

E110B

Specification	Source figure
Boom/Stick Option (Hex) 1
Max Loading Height	17.36 ft
Max Reach Along Ground	23.94 ft
Max Vertical Wall Digging Depth	13.87 ft
Max Digging Depth	15.59 ft
Max Cutting Height	25.12 ft
Boom/Stick Option (Hex) 1	Stick 6'5" (1950mm)
Dimensions and weight
Ground Clearance	1.51 ft
Width To Outside Of Tracks	8.17 ft
Length Of Track On Ground	8.57 ft
Tail Swing Radius	6.86 ft
Height To Top Of Cab	8.86 ft
Removal Counterweight Clearance	3.02 ft
Undercarriage
Shoe Size	19.69 in
Max Travel Speed	3.11 mph
Track Gauge	6.53 ft
Ground Pressure	5.69 psi
Drawbar Pull	19,334 lb
Engine
Gross Power	79.2 hp
Displacement	268.6 cu in
Operational
Operating Weight	25,574 lb
Hydraulic System Relief Valve Pressure	4,270 psi
Hydraulic Pump Flow Capacity	56.6 gpm
Fuel Capacity	66.1 gal
Hydraulic System Fluid Capacity	42.3 gal