Hitachi 4244942 Bushing | Hitachi Excavator Parts

The 4244942 bushing is a high-quality replacement part designed specifically for Hitachi machinery. Crafted with precision and built to last, this bushing is engineered to ensure optimal performance and reliability. With its durable construction, this bushing provides a secure and stable fit, allowing for smooth and efficient operation of your Hitachi equipment. It is an essential component for maintaining the proper alignment and function of various parts within your machinery. Designed to withstand rigorous use in demanding environments, this bushing is made from premium materials that offer exceptional strength and resistance to wear and tear. Its robust design ensures long-lasting durability, reducing the need for frequent replacements and minimizing downtime. The 4244942 bushing is compatible with a wide range of Hitachi models, making it a versatile choice for your machinery needs. Whether you are in the construction, mining, or industrial sector, this bushing is an excellent investment to keep your equipment running smoothly and efficiently.

Hitachi 4244942 Bushing Specifications & Fitment

What it is: Heavy-equipment bushing designed for tight-tolerance pivot joints where wear control and alignment matter.

• Part number: 4244942
• SKU: KM-4244942
• Typical use: Boom/arm/bucket linkages, work equipment pivots, and high-wear joints.

Key measurements to confirm

To ensure correct fit, match the following measurements to your machine’s worn component or OEM spec:

• Inside Diameter (ID): ___
• Outside Diameter (OD): ___
• Overall Length: ___

Quality notes

• Designed for consistent clearance and long service life when installed with proper lubrication.
• Replace pins and bushings as a set when wear is uneven to prevent premature failure.

Installation tip

Measure the bore, pin, and bushing after press-fit. Use proper tooling and lubrication, and re-check end-play after assembly.

Need help confirming dimensions? Send your machine model and the measurements above and we’ll verify fitment.

Komatsu maintenance notes (quick guide)

• Early-life greasing: For excavators, Komatsu guidance calls for greasing work equipment pins every 10 hours for the first 50 hours, and greasing again after water work.
• Clearance control: Komatsu linkage manuals commonly specify pin–bushing clearance targets and a typical service limit around 1.0 mm for many joints, often managed with shims.
• Tracked machines: For undercarriage track joints, pin/bushing turning is condition- and wear-window dependent; abrasive sites can accelerate wear substantially.