Buy HITACHI EX100 120-5 SWING DEVICE SLEW BOX NEEDLE BEARING (OEM HI 4330377) | Tonkee®

The swing device slew box needle bearing, OEM HI 4330377, is a critical part of the excavator's swing system.

This system is responsible for rotating the upper structure of the excavator, which includes the operator's cabin, engine, and hydraulic components. The needle bearing plays a pivotal role in ensuring smooth and precise rotation of this upper structure.

Function:

The primary function of the needle bearing in the swing device is to reduce friction and enable the smooth rotation of the upper structure of the excavator. This rotation is vital for the excavator's operation as it allows the operator to position the digging arm and bucket accurately, improving efficiency and productivity.

Material and Durability:

The OEM HI 4330377 needle bearing is engineered to withstand the heavy loads, vibrations, and extreme conditions that excavators frequently encounter in construction and excavation sites. It is typically constructed from high-quality materials, such as hardened steel, to ensure durability and long service life. The bearing's design and materials are carefully chosen to minimize wear and extend the component's lifespan.

Precision and Tolerance:

Precision is crucial in the manufacturing of needle bearings for excavators.

The OEM HI 4330377 needle bearing is manufactured with tight tolerances to ensure precise fit and minimal play within the swing system. This precision contributes to the smooth operation of the excavator, reducing vibrations and enhancing operator comfort.

Installation and Maintenance:

Proper installation and regular maintenance of the swing device slew box needle bearing are essential to ensure its optimal performance. During installation, it is crucial to follow manufacturer guidelines and torque specifications to prevent premature wear and damage.

Routine maintenance includes lubrication to reduce friction and wear. Inspections should be conducted to check for signs of damage or wear, such as unusual noise or play in the swing system. Prompt replacement of a worn or damaged needle bearing is essential to prevent further damage to the excavator's swing system.

Compatibility:

The OEM HI 4330377 needle bearing is specifically designed for use in Hitachi EX100-5 and EX120-5 excavators. It is essential to ensure that replacement components are compatible with the machine's make and model to maintain optimal performance and safety.

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