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The CS78B Vibratory Soil Compactor combines world-class productivity with outstanding operator comfort while continuing the legacy of durability, reliability and ease-of-service that contractors worldwide have come to expect from Cat® machines.

Cat Specs


Gross Power
173.7 HP
Engine Model
Cat C4.4 with ACERT

Operating Specifications

Compaction Width
84 in
Travel Speed - Maximum
7 mile/h
Ground Clearance
17.2 in
Turning Radius - Inside Drum Edge
12.08 in
Static Linear Load - With Cab
352.7 lb/in

Service Refill Capacities

Fuel Tank Capacity
88 gal (US)


Wheel Base
9.58 in
Overall Length
20.08 ft
Drum Width
84 in
Overall Width
7.75 in
Height - With ROPS/FOPS or Cab
10.25 ft
Drum Diameter
60.4 in

Vibratory System

Centrifugal Force - Maximum
74600 lb
Nominal Amplitude - Low
0.039 in
Centrifugal Force - Minimum
37300 lb
Nominal Amplitude - High
0.083 in


Operating Weight - With Cab
41214 lb
Weight - Drum with Cab
29626 lb


23.1 x 26