Machine models

Cat M322C specifications

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Listing-entry count
1

Short answer

Cat M322C: full-size excavator.

Selected configuration figures
Configuration	Documented field and quantity
M322C	Net Power 164 hp Operating Weight 48,061 lb

M322C specification matrix — Boom/Stick Option (Mex) 1
Specification	M322C
Shipping Length Of Unit	30.98 ft
Shipping Height Of Unit	13.06 ft
Max Cutting Height	34.16 ft
Max Loading Height	22.97 ft
Max Reach Along Ground	32.03 ft
Max Vertical Wall Dig Depth	14.67 ft
Max Digging Depth	20.61 ft
Boom/Stick Option (Mex) 1	VA Boom 5440mm / Stick 2500mm

Dimensions and weight
Specification	M322C
Wheelbase	9.03 ft
Tail Swing Radius	9.03 ft
Overall Width	9.03 in
Ground Clearance	1.19 ft
Overall Width - Outriggers Down	13 ft
Height To Top Of Cab	10.5 ft
Upper Structure Clearance	4.29 ft

Fuel Tank
Specification	M322C
Fuel Tank Capacity	101.8 gal

Engine
Specification	M322C
Cylinders	6
Number Of Cylinders	6
Engine Model	3056E DIT ATAAC
Net Power	164 hp
Power Measured @	2,000 rpm
Displacement	366 cu in
Torque Measured @	1,400 rpm
Net Torque	512.7 lb-ft
Bore	3.9 in
Stroke	5 in
Aspiration	Turbocharged and Aftercooled
Flywheel Power	164 hp
Eec 80/1269	164 hp
ISO 9249	164 hp
Maximum Torque - 1,400 Rpm	512.6 lb-ft

Operational
Specification	M322C
Operating Weight	48,061 lb
Fuel Capacity	101.8 gal
Cooling System Fluid Capacity	10.4 gal
Engine Oil Capacity	4.3 gal
Front Diff Fluid Capacity	3 gal
Rear Diff Fluid Capacity	3.9 gal
Hydraulic System Fluid Capacity	92.5 gal
Hydraulic System Relief Valve Pressure	5,076 psi
Hydraulic Pump Flow Capacity	89.9 gpm
Oscillating Axle Angle	18 degrees
Max Steering Angle	35 degrees
Tire Size	11.00-20

Swing Mechanism
Specification	M322C
Swing Speed	10.5 rpm
Swing Torque	41,525 lb-ft
Maximum Flow	29.6 gpm
Pressure	4,496 psi

Transmission and speeds
Specification	M322C
Transmission Type	Hydrostatic
Number Of Forward Gears	2
Number Of Reverse Gears	2
Max Travel Speed	15.6 mph
Creeper Speed - 2nd Gear	8.1 mph
Maximum Travel Speed	15.5 mph
Forward/Reverse - 1st Gear	5.6 mph
Creeper Speed - 1st Gear	2.5 mph
Maximum Gradeability	62%
2nd Gear - Forward	15.5 mph
2nd Gear - Reverse	12.4 mph

Tires
Specification	M322C
Standard	11.00-20 dual pneumatic
Optional	10.00-20 dual solid rubber; 18-R 19.5 XF single

Weights
Specification	M322C
Counterweight	8,598 lb
Dozer Blade	1,985 lb
Outriggers	2,870 lb
Rear - Dozer Only (1)	46,300 lb
Front And Rear Outriggers (1)	50,045 lb
Rear - Dozer, Front Outriggers (2)	48,060 lb
Rear - Dozer, Front Outriggers (1)	49,160 lb
Rear - Dozer Only (2)	45,195 lb
Front And Rear Outriggers (2)	48,940 lb
2.48 M (8'2") Stick	1,323 lb
2.78 M (9'2") Stick	1,477 lb
2.2 M (7'3") Stick	1,279 lb

Buckets
Specification	M322C
Reference Bucket Capacity	1.2 yd3
Minimum Bucket Capacity	0.8 yd3
Maximum Bucket Capacity	1.7 yd3

Hydraulic System
Specification	M322C
Travel Circuit	5,076 psi
Normal	5,076 psi
Medium Pressure	450 psi
Implement/Travel Circuit	92 gpm
High Pressure (1)	4,786 psi
High Pressure (2)	89.82 gpm

Operating Specifications
Specification	M322C
Travel Speed	15.6 mph
Maximum Reach - Ground Level	33.9 ft
Maximum Bucket Capacity	1.9 yd3
Bucket Digging Force - One Piece Boom	29,450 lb
Maximum Digging Depth - One Piece Boom	20.7 ft
Maximum Reach - Ground Level, One Piece Boom	33.9 ft
Stick Digging Force - One Piece Boom	25,853 lb
Bucket Digging Force - Va Boom	29,450 lb
Maximum Digging Depth - Va Boom	21.4 ft
Maximum Reach - Ground Level, Va Boom	33.4 ft
Stick Digging Force - Va Boom	25,853 lb

Service Refill Capacities
Specification	M322C
Fuel Tank	102 gal
Hydraulic Tank	59.4 gal
Hydraulic System - Including Tank	92 gal
Engine Crankcase	4.3 gal
Powershift Transmission	0.7 gal
Front Steering Axle - Differential	3 gal
Rear Axle - Housing (Differential)	3.9 gal
Cooling	10.3 gal
Disk Brakes	0.5 gal

Cab
Specification	M322C
Cab/Fogs Option	ISO 10262

Ratios
Figure	M322C
Engine horsepower per 1,000 lb of weight	3.4
Fuel tank per engine horsepower	0.62 gal
Hydraulic power from the listed pump flow and relief pressure	266.2 hp

Reference directory classification
Equipment group	full-size excavator

Where the M322C ranks in Cat's list — Scope of the captured comparison
Brand	Equipment group	Compared entry	Sort order
Cat	full-size excavator	M322C	Descending quantity; 1 is largest

Figure	M322C	Rank	Lowest in line	Highest in line
Engine power	164.0 hp	32 of 74	54.0 hp	542.0 hp
Listed weight	48,061 lb	36 of 74	14,330 lb	207,400 lb
Fuel capacity	101.8 gal	31 of 70	29.1 gal	327.6 gal
Horsepower per 1,000 lb	3.4 hp	15 of 74	2.2 hp	7.9 hp
Maximum digging depth	20.6 ft	30 of 60	12.4 ft	42.1 ft

The M322C beside its neighbours
Base version	219D	M322C	330C ES
Engine power	140 hp	164 hp	243 hp
Weight	47,620 lb	48,061 lb	93,586 lb
Fuel capacity	219D: 71.4 gal; M322C: 101.8 gal
Wheelbase	M322C: 9.03 ft
Ground pressure	219D: 8.4 psi
Maximum digging depth	14.87 ft	20.61 ft	-20.4 ft

M322C: 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 M322C. That is too few titles to say what owners mostly ask about, so the most recent are listed instead	1

CAT M322c Numb No Lift Nor Swing (Heavy Equipment Forums, 2026-05-02)

Used market for the M322C — Dated first-page listing snapshot
Observation date	Listing source	Equipment search	Listings
2026-09-24	MachineryTrader	Cat full-size excavator	2

Model	Listed	Model years	Lowest asking	Highest asking	Median asking	Median hours
M322C	2	2003 to 2005	$39,511	$55,000	$47,256	2,405

M322C: 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 M322C	No matching recall in this search

Sources for this page
Evidence class	Document, classification and recorded date
Reference site	Reference site: Cat M322C — RitchieSpecs. Observed 2026-09-24.
Forum threads	Forum threads: Heavy Equipment Forums thread index for Cat M322C — Heavy Equipment Forums. Observed 2026-09-24.
Used-market listings	Used-market listings: MachineryTrader listings for Cat M322C — 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.

Cat M322C: Configuration records

M322C

Specification	Source figure
Dimensions and weight
Height To Top Of Cab	10.5 ft
Tail Swing Radius	9.03 ft
Wheelbase	9.03 ft
Engine
Engine Model	3056E DIT ATAAC
Net Power	164 hp
Displacement	366 cu in
Bore	3.9 in
Stroke	5 in
Number Of Cylinders	6
Power Measured @	2,000 rpm
Aspiration	Turbocharged and Aftercooled
Cylinders	6
Torque Measured @	1,400 rpm
Net Torque	512.7 lb-ft
Maximum Torque - 1,400 Rpm	512.6 lb-ft
Flywheel Power	164 hp
Eec 80/1269	164 hp
ISO 9249	164 hp
Operational
Fuel Capacity	101.8 gal
Cooling System Fluid Capacity	10.4 gal
Hydraulic System Fluid Capacity	92.5 gal
Engine Oil Capacity	4.3 gal
Hydraulic System Relief Valve Pressure	5,076 psi
Hydraulic Pump Flow Capacity	89.9 gpm
Front Diff Fluid Capacity	3 gal
Rear Diff Fluid Capacity	3.9 gal
Oscillating Axle Angle	18 degrees
Max Steering Angle	35 degrees
Tire Size	11.00-20
Swing Mechanism
Swing Torque	41,525 lb-ft
Swing Speed	10.5 rpm
Maximum Flow	29.6 gpm
Pressure	4,496 psi
Weights
Dozer Blade	1,985 lb
Outriggers	2,870 lb
Counterweight	8,598 lb
Rear - Dozer Only (1)	46,300 lb
Front And Rear Outriggers (1)	50,045 lb
Rear - Dozer, Front Outriggers (2)	48,060 lb
Rear - Dozer, Front Outriggers (1)	49,160 lb
Rear - Dozer Only (2)	45,195 lb
Front And Rear Outriggers (2)	48,940 lb
Buckets
Reference Bucket Capacity	1.2 yd3
Minimum Bucket Capacity	0.8 yd3
Hydraulic System
Travel Circuit	5,076 psi
Normal	5,076 psi
Medium Pressure	450 psi
Implement/Travel Circuit	92 gpm
High Pressure (1)	4,786 psi
High Pressure (2)	89.82 gpm
Service Refill Capacities
Hydraulic Tank	59.4 gal
Hydraulic System - Including Tank	92 gal
Fuel Tank	102 gal
Engine Crankcase	4.3 gal
Powershift Transmission	0.7 gal
Front Steering Axle - Differential	3 gal
Rear Axle - Housing (Differential)	3.9 gal
Cooling	10.3 gal
Disk Brakes	0.5 gal
Boom/Stick Option (Mex) 1
Max Vertical Wall Dig Depth	14.67 ft
Boom/Stick Option (Mex) 1	VA Boom 5440mm / Stick 2500mm
Transmission and speeds
Transmission Type	Hydrostatic
Number Of Forward Gears	2
Number Of Reverse Gears	2
Creeper Speed - 2nd Gear	8.1 mph
Forward/Reverse - 1st Gear	5.6 mph
Creeper Speed - 1st Gear	2.5 mph
Maximum Gradeability	62%
Tires
Standard	11.00-20 dual pneumatic
Optional	10.00-20 dual solid rubber; 18-R 19.5 XF single
Operating Specifications
Travel Speed	15.6 mph
Bucket Digging Force - One Piece Boom	29,450 lb
Maximum Digging Depth - One Piece Boom	20.7 ft
Maximum Reach - Ground Level, One Piece Boom	33.9 ft
Stick Digging Force - One Piece Boom	25,853 lb
Bucket Digging Force - Va Boom	29,450 lb
Maximum Digging Depth - Va Boom	21.4 ft
Maximum Reach - Ground Level, Va Boom	33.4 ft
Stick Digging Force - Va Boom	25,853 lb
Cab
Cab/Fogs Option	ISO 10262
Additional specifications
Ground Clearance	1.19 ft
Overall Width - Outriggers Down	13 ft
Upper Structure Clearance	4.29 ft
Operating Weight	48,061 lb
Maximum Bucket Capacity	1.7 yd3
Shipping Length Of Unit	30.98 ft
Shipping Height Of Unit	13.06 ft
Max Cutting Height	34.16 ft
Max Loading Height	22.97 ft
Max Reach Along Ground	32.03 ft
Max Digging Depth	20.61 ft
Max Travel Speed	15.6 mph
Maximum Travel Speed	15.5 mph
Fuel Tank Capacity	101.8 gal
Maximum Reach - Ground Level	33.9 ft

Source

More in Cat: 322C L/322C LN, M316D/M318D/M322D, 325B L/330B L.

Cat M322C specifications

Sources for this page

Cat M322C: Configuration records