SAKAI 700 Series tandem rollers
SAKAI America’s 700 Series vibratory (HF) and nutating (ND) asphalt tandem rollers have a sleek look and increase paving productivity by achieving density with high amplitudes, or nutation mode while leaving smooth finishes on HMA surfaces.
The 700 Series comes in two models, the SW770HF and SW770ND. The SW770HF offers a three frequency settings up to 4,000 vpm, and two amplitude settings, low to high .013 to .026 inches, while the SW770ND offers a three frequency settings up to 3,000 vpm, and two amplitude settings, or nutation mode. Both models offer a drum width of 67 inches and are ideally suited for a wide variety of HMA projects including municipal streets, state highways, airport runways and large parking lots.
The 700 Series is powered by a turbocharged Isuzu 4JJ1XDIA Tier III fuel efficient diesel engine that delivers 127 hp. Sakai’s fuel saver mode allows the operator to manually or automatically set the engine RPM depending on the application, while maintaining all of the vibration, or nutation characteristics necessary for compaction and smoothness on the project. Sakai has also designed the 700 Series with a forward engine design and remote drains making for easy engine serviceability. Mechanics can make quick oil and other fluid changes from the ground, which reduces roller downtime.
The operator’s station, specifically the isolation deck of the 700 Series is similar to Sakai’s other roller models but has been enhanced to minimize vibration to the operator, which minimizes fatigue. The 700 Series also consists of a 3-position, 180 degree rotating operator console with instrument panel and seat. This design ensures that all controls are easy to reach and gauges are easy to view no matter what position the console is in. The 700 Series also provides 360 degree visibility plus a great view of the drum edges from the operator’s seat. An optional side drum light offers added visibility during night paving. ROPS and seat belts are standard equipment on every Sakai roller sold in North America.
Sakai’s ExactCompact and Intelligent Compaction, Compaction Information System (CIS) systems are also available as add-on features.
Another feature on the 700 Series is Sakai’s unrivaled spray system that eliminates downtime during the crucial compacting stage. The spray system consists of one spray bar and pump for each drum, rustproof tanks, stainless pipes, and brass nozzles that can simply be replaced by hand. The triple filtration system prevents clogging from debris and a pressurized emergency back-up pump system provides water in the event of a pump failure.