Machine models

Cat 772 Bare Chassis specifications

Entries in this reference
Listing-entry count
1

Short answer

Cat 772 Bare Chassis: rigid rock truck.

Selected configuration figures
Configuration	Documented field and quantity
772 Bare Chassis	Gross Power - SAE J1995 605 hp Displacement 1,105 in³

772 Bare Chassis specification matrix — Weights
Specification	772 Bare Chassis
LRC Bare Chassis Weight without Hoist	58,414 lb
LRC Bare Chassis Weight with Hoist	59,223 lb
LRC Gross Vehicle Weight (Target) with Hoist	180,999 lb
LRC Gross Vehicle Weight (Target) without Hoist	180,999 lb
HRC Bare Chassis Weight without Hoist	59,567 lb
HRC Bare Chassis Weight with Hoist	60,376 lb
HRC Gross Vehicle Weight (Target) with Hoist	180,999 lb
HRC Gross Vehicle Weight (Target) without Hoist	180,999 lb

ROPS
Specification	772 Bare Chassis
Tractor ROPS	77,430 lb

Operating Specifications
Specification	772 Bare Chassis
Nominal Water Tank Capacity	11,000 gal (US)

Brakes
Specification	772 Bare Chassis
Brake Surface - Front	216 in² / 1395 cm²
Brake Surface - Rear	7,794 in² / 50281 cm²

Service Refill Capacities
Specification	772 Bare Chassis
Fuel Tank Capacity	140 gal (US)
Cooling System	33 gal (US)
Crankcase	17 gal (US)
Brake/Hoist Hydraulic Tank	38 gal (US)
Brake Hoist System	60 gal (US)
Differential - Final Drives	47 gal (US)
Steering System - Including Tank	60 gal (US)
Torque Converter - Transmission System	17 gal (US)

Steering
Specification	772 Bare Chassis
Steering Standards	ISO 5010:2007
Steer Angle	31 °
Turning Diameter	57.7 ft
Turning Circle - Clearance Diameter	66.6 ft

Ratios
Figure	772 Bare Chassis
Fuel tank per engine horsepower	0.23 gal

Reference directory classification
Equipment group	rigid rock truck

The 772 Bare Chassis beside its neighbours
Base version	769D	772 Bare Chassis	777B
Engine power	485 hp	605 hp	870.4 hp
Weight	769D: 68,900 lb; 777B: 132,399 lb
Fuel capacity	140.1 gal	140 gal (US)	250 gal
Wheelbase	769D: 12.19 ft; 777B: 15 ft
Rated payload	769D: 79,000 lb; 777B: 190,000 lb

772 Bare Chassis: forum references — Forum-title search
Forum index	Equipment class queried	Names in the search	Matching titles
Heavy Equipment Forums	rigid rock truck	Cat and the 772 line that the 772 Bare Chassis belongs to (no title names the exact model). That is too few titles to say what owners mostly ask about, so the most recent are listed instead	4

CAT 772 ECM Loss Of Signal (Heavy Equipment Forums, 2025-10-24)
770g 772g CAT Haul Truck Brakes (Heavy Equipment Forums, 2024-10-19)
Looking To Purchase A Used Caterpillar 772 Between 2005 2009 (Heavy Equipment Forums, 2013-09-02)
CAT 772 (Heavy Equipment Forums, 2009-02-18)

772 Bare Chassis: dated market and recall observations — Dated listing search
Date	Listing index	Equipment class	Names queried	Result
2026-09-25	MachineryTrader (machinerytrader.com)	rigid rock truck	772 Bare Chassis	No matching offers in this snapshot

Dated CPSC search
Date	Database	Names queried	Result
2026-09-25	U.S. Consumer Product Safety Commission	Cat; 772 Bare Chassis	No matching recall in the stated search

Sources for this page
Evidence class	Document, classification and recorded date
Manufacturer	Manufacturer: Cat 772 Bare Chassis — Caterpillar Inc.. Observed 2026-09-24.
Forum threads	Forum threads: Heavy Equipment Forums thread index for Cat 772 Bare Chassis — Heavy Equipment Forums. 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.

Recorded observations — Forum-title snapshot
Observation field	Recorded value
Title count	4
Forum indexes	Heavy Equipment Forums
Search wording	the 772 Bare Chassis rigid rock truck
Latest title quoted by the reference	CAT 772 ECM Loss Of Signal

Cat 772 Bare Chassis: Configuration records

772 Bare Chassis

Specification	Source figure
Engine
Displacement	1,105 in³
Engine Model	Cat® C18
Rated Engine Speed	1700 r/min
Number of Cylinders	6
Bore	5.7 in
Stroke	7.2 in
Gross Power - SAE J1995	605 hp
Rated Net Power - SAE J1349	550 hp
Transmission and speeds
Forward - 1	8 mph
Forward - 2	10.9 mph
Forward - 3	14.8 mph
Forward - 4	19.8 mph
Forward - 5	26.9 mph
Forward - 6	36.2 mph
Forward - 7	49.2 mph
Reverse	10.4 mph
Weights
LRC Bare Chassis Weight without Hoist	58,414 lb
LRC Bare Chassis Weight with Hoist	59,223 lb
LRC Gross Vehicle Weight (Target) with Hoist	180,999 lb
LRC Gross Vehicle Weight (Target) without Hoist	180,999 lb
HRC Bare Chassis Weight without Hoist	59,567 lb
HRC Bare Chassis Weight with Hoist	60,376 lb
HRC Gross Vehicle Weight (Target) with Hoist	180,999 lb
HRC Gross Vehicle Weight (Target) without Hoist	180,999 lb
Operating Specifications
Nominal Water Tank Capacity	11,000 gal (US)
Service Refill Capacities
Cooling System	33 gal (US)
Crankcase	17 gal (US)
Differential - Final Drives	47 gal (US)
Steering System - Including Tank	60 gal (US)
Brake/Hoist Hydraulic Tank	38 gal (US)
Brake Hoist System	60 gal (US)
Torque Converter - Transmission System	17 gal (US)
Fuel Tank Capacity	140 gal (US)
Steering
Steering Standards	ISO 5010:2007
Turning Circle - Clearance Diameter	66.6 ft
Turning Diameter	57.7 ft
ROPS
Tractor ROPS	77,430 lb
Brakes
Brake Surface - Front	216 in² / 1395 cm²
Brake Surface - Rear	7,794 in² / 50281 cm²
Additional specifications
Steer Angle	31 °