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Improved Swing Torque
Backhoe swing torque from the 70-degree to 90-degree swing angle has been improved up to 88 percent. This improvement keeps the swing torque more consistent throughout the complete swing arc. The improved torque provides:
□ Easier and faster trench backfilling using the backhoe bucket.
□ Stronger uphill swing with a full bucket when working on hillsides.
□ Greater ability to hold the bucket against the excavation for a smoother, clean-cut wall.
New Swing-System Design
The 580K features a new swing system that incorporates end-mounted swing cylinders and a hydraulic sequence valve. Benefits include:
□ Improved swing cushioning.
□ Improved metering.
□ Improved swing torque.
Swing Torque Curve
Larger Diameter Stabilizer Cylinders
The diameter of the stabilizer cylinder tube has been increased from 4.0 inches (102 mm) to 4.25 inches (108 mm), for improved lifting ability.
Improved Visibility to Bucket
The width over the boom and boom cylinders has been decreased from 14 inches (356 mm) to 11 inches (279 mm), for improved visibility to the bucket.
 

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