G&Z’s new S850SL paver

Guntert & Zimmerman (G&Z) has launched its S850SL mid-size slipform paver with swing legs. The firm said that following its domestic and international market success with the G&Z S600, the patented AccuSteer: Slew Drive Track Control System and SmartLeg: Swing Leg System have been made available as options on the G&Z S850SL in lieu of the reliable and time-tested QUADRA bolster system. AccuSteer consists of slew drives that are mounted on top of the crawler track yokes that are used to steer the tracks in l
January 10, 2013 Read time: 2 mins

Guntert & Zimmerman (G&Z) has launched its S850SL mid-size slipform paver with swing legs.

The firm said that following its domestic and international market success with the G&Z S600, the patented AccuSteer: Slew Drive Track Control System and SmartLeg: Swing Leg System have been made available as options on the G&Z S850SL in lieu of the reliable and time-tested QUADRA bolster system.

AccuSteer consists of slew drives that are mounted on top of the crawler track yokes that are used to steer the tracks in lieu of steering cylinders. The system is powered with hourglass worm technology, said by G&Z to give long life, high accuracy and extremely high manoeuvrability. AccuSteer is said to allow the operator to independently rotate the tracks almost a full circle, providing exceptional on site manoeuvrability and rapid swing leg relocation for paving and transport without the need to re-pin steering cylinders.

Working in tandem with AccuSteer, SmartLeg allows the operator to adjust the swing leg angle on the fly while automatically keeping the crawler track straight ahead. This is said by G&Z to offer a high level of flexibility for the contractor to manoeuvre around track line obstacles, such as fire hydrants and airport runway lights, on the fly and without stopping to make a mechanical swing leg adjustment or re-clocking the steering transducer.  With SmartLeg, the process for transforming the S850SL into the transport configuration can be semi-automated.

This process is claimed by G&Z to dramatically save time over other conventional four track slipform pavers.  Using the combination of the 90° AccuSteer and SmartLeg, the four swing bolsters and crawler tracks are semi-automatically walked into the outboard, transport position in around 30 minutes.
Asphalt milling, paving & compaction

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