Komatsu genuine O-ring-14X-27-11170

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Komatsu Bulldozers

Komatsu genuine O-ring-14X-27-11170

PRODUCT DESCRIPTION:

The 14X-27-11170 O-ring is a specialized component for the final drive of Komatsu D65/D85 bulldozers, designed for static sealing to prevent oil leakage and dust ingress. It is compatible with final drive hub and sprocket mounting positions, featuring factory-tolerant fit, oil and wear resistance, and easy installation. This ensures reliable lubrication and sealing of the transmission system while reducing maintenance frequency.

PRODUCT DETAILS

Core Features

Static sealing and leak prevention: An elastic sealing ring is formed between the groove and the mating surface, preventing internal gear oil leakage and the intrusion of external mud/dust.

Gap filling: Utilizing rubber elasticity to fill minute gaps at the mating surfaces compensates for assembly errors and ensures reliable sealing.

Media isolation: Isolates gear oil from external air/impurities, preventing oil contamination, oxidation, and component corrosion.

Buffering and vibration reduction: The elastomer absorbs vibrations, reducing the risk of seal failure due to impact at the mating surfaces.


Product Superiority

Original factory precision fit: Dimensions and groove tolerances perfectly match, allowing for direct replacement without adjustment, avoiding leaks caused by improper clearance.

Reliable material: Made of nitrile rubber (NBR), resistant to mineral oils, wear, and aging, suitable for gear oils and engineering machinery operating conditions.

Stable seal: High compression resilience, not easily deformed by plasticity over long-term use, static seal life ≥3500 hours.

Cost-friendly: Low unit price, easy to procure, small unit quantity (commonly 2 units/final drive), low inventory and maintenance costs.

Easy installation: No special tools required, simply insert into the groove for installation, reducing replacement difficulty.


Installation and Maintenance Points

Before installation, clean the sealing groove and mating surface to remove burrs, oil, and impurities to avoid scratching the O-ring surface.

During installation, avoid twisting or stretching. Place the O-ring evenly into the groove, ensuring full contact with the mating surface.

Tighten the bolts symmetrically to the specified torque to avoid localized overpressure that could cause the O-ring to be squeezed out or damaged.

Check for leaks every 1500 hours and replace the O-ring every 3500 hours to prevent aging and failure.


Fit scenarios and value

Suitable scenarios: Suitable for static sealing surfaces of final drive components, and operating environments with heavy loads, vibration, and high dust levels.

Core value: Prevents gear oil leakage, protects final drive components, extends gear and bearing life, and reduces downtime maintenance costs.

SPECIFICATION

Project

Details

Part Number

14X-27-11170 (Komatsu genuine O-ring, compatible with final drive static seal)

Compatible Models

Komatsu D65 (EX/PX/WX), D85 (EX/PX/WX) series bulldozers (including mainstream sub-models such as D65E 12 and D85E 12)

Compatible Parts

Static seal groove at the final drive sprocket and hub mating surface, end cover, and static seal point at the gearbox/drive axle of some models

Core Category

Standard circular cross-section O-ring (dedicated for static seals)

Compatible Operating Conditions

Suitable for heavy-duty, high-vibration, dusty, and oil-temperature fluctuating mining/construction work environments


Parameter Items

Values

Notes

Cross-section Diameter

Approx. 3.5–5 mm (common standard size)

Compatible with final drive seal grooves

Inner Diameter

Approx. 40–50 mm (slight variations may occur with random types)

Precise factory matching installation position

Material

Nitrile Butadiene Rubber (NBR)

Oil-resistant, wear-resistant, suitable for engineering machinery operating conditions

Operating Temperature

-30℃ to +100℃

Coveres the final drive oil temperature range

Operating Pressure

≤20 MPa

Suitable for static sealing and low-pressure conditions

Hardness

70–80 Shore A

Balances sealing and elasticity

Tensile Strength

≥15 MPa

Ensures durability during installation and use

Compression Set

≤20%(70℃×72 h)

Long-term stable sealing


INQUIRE IMMEDIATELY

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