Machine models

Cat AD30 to AD55 specifications

Entries in this reference
Listing-entry count
3

Short answer

Cat AD30 to AD55: articulated dump trucks.

Selected configuration figures
Configuration	Documented field and quantity
AD30	Gross Power 408 hp Overall Width 8.83 ft
AD45B	Gross Power 587 hp Overall Length 36.73 ft
AD55	Gross Power 650 hp Overall Length 37.89 ft

AD30 to AD55 specification matrix — Listing labels reported by the source
Publisher name	Source guide	Listing-entry count	Labels named by the source
Cat	AD30 to AD55	3	AD30, AD45B, and AD55

Dimensions and weight
Specification	AD30	AD45B	AD55
Overall Length	333.34 ft	36.73 ft	37.89 ft
Overall Width	8.83 ft	9.85 ft	10.98 ft
Overall Height	8.36 ft	9.97 ft	16.41 ft
Wheelbase	17.07 ft	18.28 ft	19.36 ft
Ground Clearance	1.31 ft	1.45 ft	1.29 ft

Specification	AD30	AD45B
Dump Height	18.38 ft	20.86 ft
Dump Ground Clearance	1.84 ft	2.19 ft

Dump
Specification	AD30
Dump Angle	65 degrees
Rated Payload	66,150 lb

Specification	AD30	AD45B	AD55
Lower Time	11.2 sec	21 sec	4 sec
Raise Time	10.5 sec	16 sec	11 sec

Specification	AD30	AD45B
Capacity - Heaped	18.8 yd3	27.9 yd3

Specification	AD55
Capacity - Struck	35.19 yd3

Engine
Specification	AD30	AD45B	AD55
Engine Model	C15 ACERT	C18 ACERT	C18 ATTAAC
Gross Power	408 hp	587 hp	650 hp
Net Power	377 hp	556 hp	617 hp
Power Measured @	1,800 rpm	2,000 rpm	2,000 rpm
Displacement	927.9 cu in	1,105 cu in	1,107 cu in

Operational
Specification	AD30	AD45B	AD55
Fuel Capacity	132 gal	201.8 gal	201.9 gal
Hydraulic System Fluid Capacity	38.3 gal	70.3 gal	70.3 gal
Cooling System Fluid Capacity	20 gal	22.5 gal	22.5 gal
Engine Oil Capacity	10 gal	16.9 gal	17 gal
Transmission Fluid Capacity	17.7 gal	15.9 gal	15.9 gal
Tire Size	265 x R25 Radials	29.5 x R29	25x65 R33

Transmission and speeds
Specification	AD30	AD45B	AD55
Number Of Forward Gears	4	7	7
Number Of Reverse Gears	1	2	2
Max Speed	25.4 mph	32.3 mph	26.9 mph

Weights
Specification	AD30	AD45B	AD55
Front Axle - Empty	44,651 lb	60,847 lb	69,004 lb
Rear Axle - Empty	21,499 lb	27,337 lb	34,612 lb
Total Empty	66,150 lb	88,184 lb	103,617 lb

Variants — Source comparison annotation
Source guide	Differing-field count reported
AD30 to AD55	33

Ratios
Figure	AD30	AD45B	AD55
Engine horsepower per 1,000 lb of weight	5.7	6.3	6.0
Fuel tank per engine horsepower	0.35 gal	0.36 gal	0.33 gal

Figure	AD30
Rated payload per cubic yard of heaped body	3,519 lb

AD30 to AD55: forum references

Dated forum-index scope
Forum index	Exact-model query	Exact-model title matches	Broader equipment query	Broader title matches
Heavy Equipment Forums	Cat articulated dump truck	0	Cat articulated dump trucks	2

Used market for the AD30 to AD55 — Dated first-page listing snapshot
Observation date	Listing source	Equipment search	Listings
2026-09-24	MachineryTrader	Cat articulated dump truck	26

Model	Listed	Model years	Lowest asking	Highest asking	Median asking	Median hours
AD30	14	2008 to 2026	None shown	None shown	None shown	None shown
AD45B	9	2007 to 2022	None shown	None shown	None shown	9,217
AD55	3	2008 to 2011	None shown	None shown	None shown	None shown

AD30 to AD55: 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 articulated dump truck AD30, AD45B, AD55	No matching recall in this search

Sources for this page
Evidence class	Document, classification and recorded date
Reference site	Reference site: Cat AD30 — RitchieSpecs. Observed 2026-09-24.
Reference site	Reference site: Cat AD45B — RitchieSpecs. Observed 2026-09-24.
Reference site	Reference site: Cat AD55 — RitchieSpecs. Observed 2026-09-24.
Forum threads	Forum threads: Heavy Equipment Forums thread index for Cat AD30 to AD55 — Heavy Equipment Forums. Observed 2026-09-24.
Used-market listings	Used-market listings: MachineryTrader listings for Cat AD30 — 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.

Dated listing search without advertised prices
Date	Listing index	Equipment class	Names queried	Listings	Price observation
2026-09-24	MachineryTrader	articulated dump truck	AD30, AD45B, and AD55	26	No prices shown in this snapshot

AD30

Specification	Source figure
Dump
Capacity - Heaped	18.8 yd3
Rated Payload	66,150 lb
Dump Angle	65 degrees
Engine
Gross Power	408 hp
Displacement	927.9 cu in
Engine Model	C15 ACERT
Net Power	377 hp
Power Measured @	1,800 rpm
Operational
Fuel Capacity	132 gal
Tire Size	265 x R25 Radials
Hydraulic System Fluid Capacity	38.3 gal
Cooling System Fluid Capacity	20 gal
Engine Oil Capacity	10 gal
Transmission Fluid Capacity	17.7 gal
Transmission and speeds
Number Of Forward Gears	4
Max Speed	25.4 mph
Number Of Reverse Gears	1
Weights
Total Empty	66,150 lb
Total Loaded	132,300 lb
Dimensions and weight
Overall Width	8.83 ft
Overall Height	8.36 ft
Wheelbase	17.07 ft
Dump Height	18.38 ft
Ground Clearance	1.31 ft
Dump Ground Clearance	1.84 ft
Additional specifications
Lower Time	11.2 sec
Raise Time	10.5 sec
Front Axle - Empty	44,651 lb
Rear Axle - Empty	21,499 lb
Front Axle - Loaded	58477 %
Rear Axle - Loaded	73,823 lb

AD45B

Specification	Source figure
Weights
Total Empty	88,184 lb
Total Loaded	187,393 lb
Engine
Engine Model	C18 ACERT
Displacement	1,105 cu in
Gross Power	587 hp
Net Power	556 hp
Transmission and speeds
Number Of Forward Gears	7
Number Of Reverse Gears	2
Dump
Capacity - Heaped	27.9 yd3
Operational
Cooling System Fluid Capacity	22.5 gal
Transmission Fluid Capacity	15.9 gal
Fuel Capacity	201.8 gal
Hydraulic System Fluid Capacity	70.3 gal
Additional specifications
Front Axle - Empty	60,847 lb
Rear Axle - Empty	27,337 lb
Front Axle - Loaded	85451 %
Rear Axle - Loaded	101,942 lb
Power Measured @	2,000 rpm
Max Speed	32.3 mph
Lower Time	21 sec
Raise Time	16 sec
Engine Oil Capacity	16.9 gal
Tire Size	29.5 x R29
Overall Length	36.73 ft
Overall Width	9.85 ft
Overall Height	9.97 ft
Wheelbase	18.28 ft
Ground Clearance	1.45 ft
Dump Height	20.86 ft
Dump Ground Clearance	2.19 ft

AD55

Specification	Source figure
Weights
Total Empty	103,617 lb
Engine
Engine Model	C18 ATTAAC
Displacement	1,107 cu in
Gross Power	650 hp
Net Power	617 hp
Transmission and speeds
Number Of Forward Gears	7
Number Of Reverse Gears	2
Dump
Capacity - Struck	35.19 yd3
Operational
Cooling System Fluid Capacity	22.5 gal
Transmission Fluid Capacity	15.9 gal
Fuel Capacity	201.9 gal
Hydraulic System Fluid Capacity	70.3 gal
Additional specifications
Front Axle - Empty	69,004 lb
Rear Axle - Empty	34,612 lb
Power Measured @	2,000 rpm
Max Speed	26.9 mph
Lower Time	4 sec
Raise Time	11 sec
Engine Oil Capacity	17 gal
Tire Size	25x65 R33
Overall Length	37.89 ft
Overall Width	10.98 ft
Overall Height	16.41 ft
Wheelbase	19.36 ft
Ground Clearance	1.29 ft