Hitachi 4438771 Bushing | Hitachi Excavator Parts
Warranty: SAME AS OEM WARRANTY
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Product Description
The 4438771 bushing is a high-quality replacement part designed for use in Hitachi machinery. With its exceptional durability and performance, this bushing ensures reliable operation and extended service life.
Engineered to meet the highest industry standards, this bushing is built to withstand heavy loads, extreme temperatures, and harsh operating conditions. It provides crucial support and stability to various components, preventing excessive wear and tear.
Designed specifically for Hitachi equipment, this bushing guarantees a perfect fit, allowing for easy installation and hassle-free maintenance. Its precise dimensions and exceptional craftsmanship ensure optimal performance and functionality.
Made from top-grade materials, this bushing offers exceptional strength and resistance to corrosion, ensuring long-lasting performance even in demanding environments. Its superior construction and reliable design make it an ideal choice for professionals and diy enthusiasts alike.
Whether you are replacing a worn-out bushing or performing routine maintenance, the 4438771 bushing is the perfect solution. Trust in its quality and performance to keep your Hitachi machinery operating at its best.
Please note that the
Hitachi 4438771 Bushing Specifications & Fitment
What it is: Heavy-equipment bushing designed for tight-tolerance pivot joints where wear control and alignment matter.
- Part number: 4438771
- SKU: HIT-4438771
- 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.
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