Shop HITACHI ZAXIS SERIES SWING DEVICE SLEW BOX NEEDLE BEARING | Tonkee®

The swing device slew box needle bearing is a precision-engineered component designed to withstand the rigors of heavy-duty construction and excavation applications.

It is typically constructed from high-quality materials, such as hardened steel, to ensure durability and longevity under extreme working conditions. The bearing consists of a series of needle rollers arranged in a circular pattern within a cage. This arrangement allows for reduced friction and increased load-carrying capacity, making it suitable for the demands of construction equipment.

Function and Operation:
The primary function of the needle bearing within the swing device slew box is to facilitate smooth and precise rotation of the equipment's upper structure, which includes the excavator's cabin, boom, and arm. When hydraulic power is applied, the swing motor drives a pinion gear that engages with a ring gear on the upper structure. This interaction causes the upper structure to rotate. The needle bearing's role is to support the radial load generated during this rotation, minimizing friction and wear on the components.

Load-Carrying Capacity:
One of the key specifications of the swing device slew box needle bearing is its load-carrying capacity. This capacity is determined by the size and arrangement of the needle rollers, as well as the quality of the materials used in its construction. A higher load-carrying capacity ensures that the bearing can handle the stresses and forces generated during heavy excavating tasks, such as digging, lifting, and swinging the equipment's arm.

Precision and Tolerance:
Precision is critical when it comes to the design and manufacturing of the needle bearing.

Tight tolerances ensure that the bearing operates with minimal play or backlash, which is essential for accurate and controlled movement of the equipment. Any deviation from these tolerances can result in reduced efficiency, increased wear and tear, and potentially costly repairs.

Sealing and Lubrication:
To maintain optimal performance and extend the bearing's lifespan, it is essential to provide effective sealing and lubrication. Seals or gaskets are often integrated into the bearing's design to prevent contamination from dirt, dust, and moisture. Lubrication channels or grease fittings ensure that the needle rollers remain well-lubricated, reducing friction and heat generation.

Maintenance and Replacement:
Like all mechanical components, the swing device slew box needle bearing requires regular inspection and maintenance. Bearings may eventually wear out due to the harsh working conditions they endure. When signs of wear or damage are detected, timely replacement is crucial to prevent costly breakdowns and downtime.

Previous:China ZAXIS ZX200 210 KOBELCO 210 SERIES EXCAVATOR D4 TRACK CHAIN JOINING LINK PIN AND WASHERS 220 X 38MM | Tonkee®

Next:OEM HITACHI ZAXIS ZX120 130-1 SERIES FAN BELT 17 X 1180MM LONG BX46 | Tonkee®