DYNAPAC CA121 STATIC SMOOTH DRUM ROLLER

Technical Description

The Dynapac CA121 is a static smooth drum roller designed primarily for compaction in pipe trenches, road shoulders, and similar applications. It features a 53-inch drum width with an operating compaction width of 57 inches, providing efficient surface coverage. The drum diameter is 37.1 inches, and it produces a static linear load of 216.2 lb/in, optimized for stable and uniform soil compaction. The roller is powered by a John Deere engine delivering 71.1 horsepower, ensuring reliable performance and effective power-to-weight ratio. The machine’s vibration frequency is 1800 vibrations per minute (vpm), which translates to approximately 32 Hz, combined with a nominal amplitude of 0.1 inches at medium setting for optimal compactive force. The centrifugal force at medium vibration amplitude reaches 12,139.7 pounds, further enhancing compaction efficiency. The CA121 model has an inside turning radius of 74 inches and an overall width close to 4.88 feet, enabling maneuverability in confined spaces. Its height to the top of the cab measures approximately 7.68 feet. With a gross operating weight near 4,190 kg (4 tons), the Dynapac CA121 balances weight and size for effective compaction without excessive ground pressure. This roller’s dimensions and mechanical specifications make it suitable for compacting granular and mixed soils, offering consistent and reliable performance in various construction environments.