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Caterpillar Inc. announces the introduction of the CS44 and CP44 vibratory soil compactors. The new CS44 and CP44 offer many of the same industry-proven design and performance characteristics of the successful 400E-Series Soil Compactors as well as the Production-Class range. In addition, the CS44 and CP44 feature design enhancements that increase machine serviceability, reliability and operator comfort when compared to the current 400E-Series Vibratory Soil Compactors.

The CS44 and CP44 Vibratory Soil Compactors compete in the 5.5 – 8.0 metric ton machine class and features the exclusive Caterpillar dual pump propel system that provides superior gradeability. The dual pump propel system provides separate hydraulic flow to the rear wheels and the drum for exceptional tractive effort in soft underfoot conditions or steep slope applications and allows for superior control on a grade in forward and reverse.

Machine Drum Style Hp (kW) Operating Weights with ROPS/FOPS Cab
CS44 Smooth 102 (75) 7240 kg 3510 kg at drum
CP44 Padfoot 102 (75) 7635 kg 3860 kg at drum

High tractive effort, especially useful on steep slopes and soft lifts, helps increase production and expands the application range for the CS44 and CP44. The propel system features a unique dual pump arrangement. The two pumps provide hydraulic flow to the drum drive motor and wheel drive motor independently, so there is maximum torque and full-time tractive power to the drive motors regardless of traction or rolling resistance.

A limited slip differential, which maximizes rear wheel traction, is standard on all models. Top speed in forward and reverse is 12.3 km/h. The 1676 mm drum width provides maneuverability for working in confined quarters.

The new Cat® C4.4 engines with ACERT™ Technology feature a thicker engine block and more-robust components. This improved design makes the engines more reliable and helps them run more quietly. The C4.4 engine has a gross power rating of 75 kW (102 hp) at 2200 rpm. An improved engine airflow design vents engine heat at the rear of the machine. The design helps prevent exhaust from blowing ground-level debris, or blowing heat on the operator. The cooling system is also 25% larger than the system on the previous 433E-Series. This reduces operating temperatures, which reduces system wear and improves performance in hot environments.

The operator’s station on the new CS44 and CP44 Soil Compactors shares superior comfort, visibility and ease of operation as on the Production-Class Soil Compactors. The operator’s station features a tilting steering column that can be adjusted by the operator to any desired position. The steering column also moves out of the way for easy entrance and exit from the operator’s seat. The steering column offers more leg and knee room for a comfortable working environment. Machine gauges are clustered on the tilt steering column for easy reference.

The propel lever and parking brake switch are located to the right of the operator’s seat for convenient one-hand operation. The grouped controls feature a height adjustable, padded wrist rest that can be positioned for operator comfort. An optional leveling blade is available for the CP44 and padfoot shell kit-equipped CS44s. The leveling blade features a foot-operated control, giving the operator complete control of machine steering, blade operation and propel simultaneously.

The suspension seat is fully adjustable to include fore and aft positions, bottom cushion height and suspension stiffness. Flip-up armrests and a 76 mm wide retractable seat belt are standard. A rotating seat is optional. The rotating seat improves operator comfort when working in the reverse direction.

A bolt-on, two-post ROPS/FOPS canopy or a ROPS/FOPS cab is available. These configurations may be standard in some market areas and optional in others. Factory installed air conditioning for the cab is also standard in some market areas and optional in others.

Noise levels at the operator’s station and at ground level have been reduced for greater operator comfort with less noise emitted to the surrounding environment. A standard floor mat on the operator platform provides sure footing and also helps to further reduce noise and vibration transmitted to the operator. Four large isolation mounts isolate the operator platform from the machine frame for reduced vibration transfer to the operator’s station.

The CS44 and CP44 Soil Compactors are simple to operate, allowing crewmembers to learn quickly and maximize the compaction productivity of the machine. An easy-to-understand instrumentation panel allows the operator to quickly verify the status of machine systems. An audible warning alarm alerts the operator when abnormal conditions exist in the engine or hydraulic systems.

Improved operator visibility and excellent service access are achieved with the
new, sloped rear hood design. The one-piece fiberglass hood allows for excellent visibility to the outside edge of the rear tires and to the rear of the machine from the operator’s station. The sloped hood allows the operator to see obstacles measuring
1 meter high and 1 meter to the rear of the machine. In the front of the machine, there is unrestricted visibility to the drum for precise operation.

Dual amplitude is standard on the CS44 and CP44. Maximum centrifugal force in high amplitude is 134 kN and 67 kN in low amplitude. Dual amplitude expands the application range for vibratory soil compactors. The large spread between high and low amplitude makes it easier for the operator to adapt compactive effort to changes in lift thickness, soil characteristics and density requirements while maintaining top performance.

The drum on the CS44 and CP44 incorporates a “pod” style housing to enclose the Caterpillar eccentric weight system. This design feature enhances reliability and makes servicing easier. The eccentric weight features an enclosed casting with repositioning steel shot on the inside. The direction of the weight shaft rotation determines high or low amplitude, which is controlled from the operator’s station. This system provides longer service life than competitive systems, which incorporate heavy weights that slam and wedge together, causing metal chips that contaminate the system.

The pod-style weight housing is a sealed chamber inside which the eccentric weight spins. The pod is assembled and sealed in a “clean room” at the factory to ensure that the internal components are clean and free from contaminants. The housing has double seals to help guard against contamination once installed.

Replacement is much easier with the pod-style design. The pod can be exchanged while the drum stays horizontal. Simply remove the old pod and replace it with a new one.

Because of the decreased risk of contamination and the use of synthetic oil, the change interval for the bearing lubrication oil is best-in-class 3 years/3000 hours. Scheduled oil sampling is not necessary.

Optional vibration per minute (VPM) gauge and variable vibration frequency enhance the productivity of the CS44 and CP44 compactors.

Other options include; a two-piece padfoot shell kit for the CS44; polyurethane scrapers on the front and rear of the drum on the smooth drum models; a foot-controlled leveling blade for the CP44 and padfoot shell kit equipped CS44s; bio-oil factory-fill option; a rotating suspension seat and a brake release pump.

Service access is simple and convenient on the CS44 and CP44. The durable one-piece fiberglass hood tilts forward with the aid of two gas charged struts. Once the hood is opened, the engine compartment and cooling package are accessible.

The operator’s station tilts forward to provide access to the hydraulic pumps, hoses and electrical components. A hand-operated hydraulic pump is standard on machines equipped with a cab and optional on machines equipped with a platform. The hydraulic pump operates a hydraulic cylinder to raise and lower either the operator’s platform or cab.

The hydraulic system has an improved test-port block to simplify oil sampling and prevent accidental oil spilling or contamination of the hydraulic system. The CS44 and CP44 come from the factory with a standard fill of Cat HYDO™ Advanced 10 hydraulic oil, which extends the hydraulic system maintenance interval to 3 years/3,000 hours. This is the longest available for this class of machine. Hydraulic pumps and motors common with other Cat equipment make servicing easier for mechanics.

Other features that make servicing these machines simple include leak-resistant O-ring face-seal hydraulic fittings, grouped pressure test ports, S•O•SSM valves and remote grease points. The articulation hitch features sealed-for-life bearings that never need greasing. The steering cylinders feature remote grease fittings to simplify lubrication. The fuel cell, hydraulic tank, engine and cooling system are equipped with Ecology drains, which facilitate easy, environmentally safe draining of the systems.

Hydraulic hoses are held securely in place with polyurethane routing blocks. The blocks separate hoses helping ensure that they do not rub on one another. And when hoses are replaced, the blocks are stackable to provide expansion so new hoses can be secured. All hoses are protected to help reduce damage during trench work or in other confined applications. The hoses for the leveling blade are routed through the front bumper for extra protection.

Nylon-braided wire harnesses protect the 24-volt electrical. All wires are color-coded and numbered to facilitate easy trouble-shooting. Wires are held in place by dedicated clips, and connectors are weather-resistant.

The radiator is rear mounted for easy service and access. The radiator tilts to improve access for cleaning. The cooling system is 25% larger, increasing the cooling capacity. This lowers internal heat, which reduces wear and improves performance in hot environments. Redesign of the engine airflow reduces the formation of dust clouds and prevents hot engine air discharge on the operator’s station.

The CS44 and CP44 have been designed to comply with all applicable regulations regarding emissions, vibrations and noise.