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Sakai

Sakai SW850


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Specifications


  • Three frequencies (2,500vpm, 3,000vpm and 4,000vpm) with dual amplitude vibration settings make the SW800, SW850 and SW900 very versatile rollers, applicable to asphalt pavement as well as base course
  • The 4,000vpm high frequency setting is especially effective for superpave compaction. With this high frequency mode, the compaction work is sped up and a smoother surface si achieved due to closer impact spaces.
  • Large diameter drums keep the pavement surface smooth and avoid hairline cracks.
  • The directions of vibrator's rotation are arranged so that all effective compaction force is applied to the ground and uncomfortable vibration does not reach the operator station.
  • Drive motors and vibration motors are cross-mounted between front and rear drums. This design balances the SW800, SW800N, SW850 and SW900 not only front and rear, but also right and left. This feature keeps the machines rolling straight evenat very slow speeds.
  • The 180 degree rotating MPOS (multi-position operator station) provides all around visibility as well as a view of drum edges regardless of the direction of travel. The rotation of the operator station is smooth and effortless. The instrument panel is always located in front of the operator so that the monitoring of gauges and instruments is very easy.
  • Like SAKAI's other vibratory rollers, the SW800 employs a patented, unique vibration isolation system that offers the best riding comfort and a longer service life for its rubber isolators.
  • The pressurized and fully corrosion-proof water sprinkler system includes two large capacity polyethylene tanks which have a large filler opening, stainless pipes and quick-mount type brass spray nozzles along with a triple filtering system. This system includes an emergency back up when a water pump failsor one tank becomes empty. The wind protection cover for each spray bar keeps drums constantly wet even on windy days. This protective guard is provided for each tank.
  • The engine and hydraulic components are protected in a fully enclosed compartment with wide service doors. In addition, these components are accessible from the ground.
  • The hydraulic system includescentralized pressure gauge ports.
  • Quick-mount water spray nozzles can be mounted or dismounted without tools. They are made of brass, giving them unsurpassed durability.
  • A large ball bearing and taper bearings are employed in the center-pin mechanism to prolong the service life and lubrication intervals.
  • The low center of gravity design assures stable drive even over rough surfaces and 1m-1m visibility are standard features of the SW800, SW800N, SW850 and SW900.
  • In addition to a hydrostatic primary brake system and spring-applied, hydraulically released (SAHR) secondary brake, a foor brake is provided for emergency stops.
  • Standard equipment includes instruments, gauges, spring-loaded outer and inner scrapers, head lamps, working lamps, back-up alarm and horn.
  • SAKAI recommends ROPS (Roll-over protective structures) and ROPS is standard in North America.
Gross Weight kg (lbs) 12,500 (27,560)
Load on front axle kg(lbs) 6,050 (13,340)
Load on rear axle kg(lbs) 6,450 (14,220)
1st km/h (mile/h) 0-7.0 (0-4.3)
2nd km/h 0-11.5 (0-6.8)
Low amp. 67Hz (4,000vpm) 148 (33,290)
Low amp. 50Hz (3,000vpm) 82 (18,520)
Low amp. 42Hz (2,500vpm) 58 (13,010)
High amp. 50Hz (3,000vpm) 141 (31,750)
High amp. 42Hz (2,500vpm) 100 (22,490)
mm (in) 2,000 (79)
mm (in) 6.3 (248)
%(°) 31 (17.2)
Model ISUZU "DD-4BG1T"
Type Diesel Engine EPA Tier, Water-cooled 4 cycle
Rated Output kW (HP)/ min⁻¹ 90(121) / 2,300
Type Hydrostatic transmission
Service Brake Hydrostatic & mechanical, multi-wet disc type
Parking Brake Mechanical, multi-wet disc type
Hydraulic Type (Articulated Type)
Drums (Use F & R drum) Vibrate & Drive
Drums (Suspension System) Rubber damper type
Pressurized Type
Fuel Tank L (gal) 250 (66)
Sprinkler Tank L (gal) 600 (159)x2