OEM HITACHI ZAXIS ZX120 130-3 HYDRAULIC PUMP NEEDLE BEARING (ITEM 35 OEM HI 4666849) | Tonkee®

Part Number: HI 4666849 is the OEM part number for this specific needle bearing, ensuring compatibility and quality with Hitachi equipment.

Material: The bearing is typically made from high-quality steel, ensuring durability and resistance to wear and tear even in demanding operating conditions.

Dimensions: Needle bearings come in various sizes, but the HI 4666849 is precisely engineered to fit the specific requirements of the hydraulic pump in the ZX120 and ZX130-3 excavators. Exact dimensions would depend on the specific model and variant.

Load Capacity: Needle bearings are known for their high load-carrying capacity, making them suitable for heavy-duty applications like hydraulic pumps in construction equipment. The specific load rating would depend on the bearing's size and design.

Lubrication: Proper lubrication is essential for the performance and longevity of needle bearings.

The design of the hydraulic system in these excavators should include provisions for lubricating this bearing to prevent premature wear.

Precision: Needle bearings are manufactured with tight tolerances to ensure precise operation. This precision is crucial for maintaining the efficiency of the hydraulic pump, as any deviation can result in decreased performance or increased wear.

In the context of the Hitachi Zaxis ZX120 and ZX130-3 excavators, the hydraulic pump is responsible for converting mechanical power from the engine into hydraulic power, which drives various hydraulic functions such as the boom, arm, and bucket movements. The needle bearing (item 35, HI 4666849) plays a critical role within the pump assembly by reducing friction and ensuring the smooth rotation of key components.

Maintenance and replacement of this needle bearing are essential to keep the hydraulic pump functioning optimally. Regular inspection for signs of wear or damage and timely replacement can prevent costly breakdowns and downtime on construction sites.

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