OEM HITACHI EX60-5 SWING DEVICE SLEW BOX GEAR SUN (OEM HI 4397236) | Tonkee®

OEM HITACHI EX60-5 SWING DEVICE SLEW BOX GEAR SUN (OEM HI 4397236) | Tonkee®

HITACHI EX60-5 SWING DEVICE SLEW BOX GEAR SUN (OEM HI 4397236) | Tonkee®
Due to the rigorous demands of excavation work, the Swing Device Slew Box Gear Sun is subject to wear and tear. Regular inspection and maintenance are essential to ensure its continued performance. Operators and maintenance personnel should look for signs of wear, damage, or unusual noises during routine equipment checks. Any issues detected should be addressed promptly to prevent more extensive damage to the swing system, reduce downtime, and avoid costly repairs.
HITACHI EX60-5 SWING DEVICE SLEW, BOX GEAR SUN (OEM HI 4397236) | Tonkee®

The Swing Device Slew Box Gear Sun is engineered to meet high-quality standards, designed to withstand the demanding conditions encountered in construction and excavation sites.


Typically constructed from hardened steel or durable alloy materials, this component is chosen for its strength, resistance to wear, and ability to endure the intense mechanical stresses experienced during operation.

The primary function of the Swing Device Slew Box Gear Sun is to be a central component in the planetary gear system within the swing drive. This system is responsible for transmitting power from the swing motor to the swing ring gear, which in turn enables the excavator's upper structure to rotate horizontally. This horizontal rotation is essential for accurate positioning and efficient operation, allowing the operator to precisely control the bucket or attachment's placement.

The Swing Device Slew Box Gear Sun operates within the planetary gear set, which consists of the sun gear, planet gears, and the ring gear. In this system, the sun gear is the central component around which the planet gears orbit. The interaction between these gears allows the rotation of power from the swing motor to be transferred to the swing ring gear, resulting in the rotation of the upper structure.

Proper functioning of the Swing Device Slew Box Gear Sun is crucial for the overall performance of the excavator.


It ensures smooth and controlled slewing of the upper structure, which is vital for accurate and efficient excavation work. Precise positioning and maneuverability are especially important when working in tight spaces or alongside other machinery and structures.

Additionally, the Swing Device Slew Box Gear Sun contributes to operator safety by enabling the rapid swiveling of the upper structure away from potential hazards or obstacles. This feature enhances job site safety and helps prevent accidents.

Due to the rigorous demands of excavation work, the Swing Device Slew Box Gear Sun is subject to wear and tear. Regular inspection and maintenance are essential to ensure its continued performance. Operators and maintenance personnel should look for signs of wear, damage, or unusual noises during routine equipment checks. Any issues detected should be addressed promptly to prevent more extensive damage to the swing system, reduce downtime, and avoid costly repairs.

When replacement of the Swing Device Slew Box Gear Sun is necessary, it is crucial to use a component that meets OEM specifications to ensure proper fit and performance. Compatibility with other swing system components, such as the swing motor and ring gear, is essential for seamless operation.
BOX GEAR SUN (OEM HI 4397236) | Tonkee® HITACHI EX60-5 SWING DEVICE SLEW
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