Sakai Compaction Catalog — Match Drum Width & Amplitude

Fleet planners compare tandem vibratory rollers against pneumatic tire rollers when the mat needs both breakdown energy and kneading finish. Sakai lists compaction force (kN), drum diameter, vibration frequency, and operating weight on each class card so the shortlist is measurable before a demo. Soil compactors publish gradeability and ground pressure (kPa) for embankment lifts; combination machines publish transport width for municipal night work.

Amplitude selection remains a live field dispute: high amplitude speeds density on thick base lifts but can mark polymer-modified binders if finish passes stay in vibration too long. Our line card calls out high/low amplitude windows and when to switch to static or pneumatic kneading so supervisors are not guessing from a single “max force” number. Hydraulic cleanliness at ship (ISO 4406) and Tier 4 Final engine power (kW) travel with the serial for acceptance checklists.

Operating Limits We Publish Up Front

• Mat temperature / binder window: Vibratory finish passes on polymer-modified and SMA mats outside the mix supplier’s temperature band can polish or mark the surface; switch to static or pneumatic kneading when the mat cools below the published window.
• Structural vibration: Bridge decks and thin airport lifts that specify oscillation or static-only modes are outside high-amplitude tandem duty — use the oscillation kit and file the deck engineer’s vibration limit before night work.
• Transport / grade: Combination rollers are sized for ≤2.55 m transport width on municipal night work; soil single-drums rated to 45% gradeability still need moisture within ±2% of OMC or Proctor targets will not hold regardless of centrifugal force (kN).