Komatsu 6610-21-2250 O-Ring

Alternate Part #6610212250

The Komatsu 6610-21-2250 o-ring liner is a high-quality aftermarket part designed specifically for use with Komatsu equipment. This durable o-ring liner is meticulously crafted to ensure a perfect fit and optimal performance. Engineered to withstand rigorous conditions and deliver exceptional sealing capabilities, this o-ring liner plays a critical role in maintaining the efficiency and reliability of your Komatsu machinery. Whether you're operating a construction site, a mining operation, or any other heavy-duty application, this o-ring liner is built to handle the toughest challenges. Designed to meet or exceed OEM specifications, this Komatsu aftermarket part guarantees compatibility and seamless integration with your equipment.

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Komatsu 6610-21-2250 Pin Specifications & Fitment

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

• Part number: 6610-21-2250
• SKU: KM-6610-21-2250
• 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.