Hitachi 4443880 Bushing | Hitachi Excavator Parts

Introducing the 4443880 bushing, a high-quality replacement part manufactured by Hitachi. This durable bushing is designed to provide optimal performance and longevity for various machinery and equipment. Crafted with precision and attention to detail, the 4443880 bushing is engineered to withstand heavy loads, vibrations, and harsh working conditions. Its superior construction ensures enhanced durability, reducing the need for frequent replacements. Compatible with a wide range of machinery models, this versatile bushing is an ideal choice for professionals in industries such as construction, agriculture, and manufacturing. Its seamless installation process allows for quick and hassle-free replacement, minimizing downtime and maximizing productivity. The 4443880 bushing is engineered to deliver exceptional performance, providing smooth and efficient operation. Its advanced design helps to reduce friction and wear, ensuring optimal functionality and extending the lifespan of your machinery. Invest in the reliability and performance of the 4443880 bushing by Hitachi, a trusted brand known for its commitment to excellence. Trust this high-quality replacement part to keep your machinery running smoothly and efficiently, allowing you to focus on your work without interruptions.

Hitachi 4443880 Bushing Specifications & Fitment

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

• Part number: 4443880
• SKU: HIT-4443880
• 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.