CS-431B Caterpillar CS-431B Specifications & Technical Data (1989—2026)

Vibratory Soil Compactors

Cat's ten models of Vibratory Soil Compactors cover your full range of compaction needs, from trenches to highways to airports. You can select from smooth or padded drum, from small tow-type models up to high production heavyweights. Cat Compactors deliver quick compaction of deep lifts for best operating economy and efficiency. They combine optimum drum weight, amplitude and frequency to develop maximum compactive effort. Superior operator comfort and excellent visibility is built in to boost overall productivity. Priority-demand power-assisted steering gives positive machine control. Single lever control of forward and reverse travel simplifies operation. Servicing is simple, too. Hydraulic systems on self-propelled units are all readily monitored for quick system diagnosis through conveniently grouped pressure test ports. Easy access to all pumps and motors simplifies service. Longer recommended intervals between scheduled maintenance reduce downtime and increase work time.

550 Series: Reliability for the tough jobs

Three high-production models handle the big jobs — from highways to airports. Your best choice for compaction of up to 765 cu. m./1000 cu. yd. per hour. High-traction hydrostatic propel system and the 115 kW/155 hp Cat 3208 diesel Engine deliver reliable power to keep you working on steep grades and in deep, soft material. Large, high-torque propel motors provide excellent response and drawbar power. Cat’s exclusive flow divider valve regulates hydraulic flow to ensure tractive power to both the drum and rear wheels on CS-553 and CP-553 units, regardless of underfooting. A standard NoSPIN differential provides full-time traction to both rear wheels. High amplitude/dynamic force vibratory system incorporates dual eccentric weights and optimum drum balance for even compaction across the full 2134 mm/84” drum width. Oil bath lubrication with single low-speed seal increases reliability and reduces daily maintenance.

Tow-type compactors: Cost efficient yet durable

Two Cat tow-type compactors, sized for small site preparation, base compaction, trench and utility work, offer low cost per yard of material compacted. Easily towed by a D3B or D4H Track-type Tractor for confined area compaction. High dynamic force is provided by a hydrostatic vibratory system. Direct drive hydraulic system without chains or belts delivers the most efficient transfer of compactive energy to the drum. Low maintenance. Fifty-hour lubrication intervals and only four grease points speed routine maintenance procedures.