Komatsu 87843 O-Ring

Introducing the 87843 seal from ori, an essential Komatsu parts component designed to enhance the performance and longevity of your machinery. This high-quality seal is crafted with precision and engineered to provide exceptional durability and reliability in even the most demanding working conditions. The 87843 seal is an ideal choice for Komatsu equipment owners looking to maintain the optimal functionality of their machinery. It is designed to effectively prevent leaks and protect critical components from dust, dirt, and other contaminants, ensuring smooth and efficient operation. Crafted from top-grade materials, this seal boasts exceptional resistance to wear and tear, ensuring a long service life. Its robust construction enables it to withstand high pressures, extreme temperatures, and harsh environments, making it suitable for a wide range of applications. Installing the 87843 seal is a breeze, thanks to its precise dimensions and easy-to-use design. With its perfect fit, you can quickly and effortlessly replace your old or damaged seal, minimizing downtime and maximizing productivity. Whether you are in the construction, mining, or industrial sector, the 87843 seal from ori is a reliable choice that guarantees superior performance and exceptional value for your investment. Trust in its quality and depend on its ability to keep your Komatsu machinery running smoothly, allowing you to focus on your work with confidence. Note: please refer to the specific product listing for pricing details, available sizes, and the exact material used in the construction of the 87843 seal.

Komatsu Pin Specifications & Fitment

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

• Part number: See title
• SKU: KM-87843
• 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 machineTMs 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 weTMll 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 pinbushing 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.