523919 - Textron Aviation OEM Flap Roller Bushing

0523919 – Textron Aviation OEM Flap Roller Bushing

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Overview

The 0523919 is a genuine Textron Aviation (Cessna) Original Equipment Manufacturer (OEM) bushing, specifically engineered for use within the wing flap roller assemblies (such as 0523920 or 0523921). This is not a generic spacer; it is a flight-critical, precision-machined bearing component. Its primary function is to provide a durable, low-friction, replaceable wear surface for the flap roller axle or pin, ensuring smooth rotation of the roller as it guides the flap along its track during extension and retraction.

Manufactured from a high-quality bearing material (typically bronze or a specialized polymer, must be confirmed by OEM documentation) to exacting Textron standards, the 0523919 is designed to withstand the high loads and oscillating motion inherent in the flap system. As a sacrificial component, it absorbs wear, protecting the more expensive roller and axle components. Using the genuine OEM part guarantees the correct material, precise dimensions, and proper fit essential for reliable flap operation.

Key Features

• Genuine Textron Aviation OEM Part: Guarantees the part is the factory-specified and fully certified component, ensuring correct fit, material properties, and airworthiness.

• Precision Machined Bearing Surface: Provides a smooth, dimensionally accurate surface for the flap roller axle/pin, minimizing friction and wear.

• Sacrificial Wear Component: Intentionally designed to be the primary wear item within the roller assembly, protecting the roller and axle from wear.

• Low-Friction Operation: Ensures the flap roller can rotate freely under load, contributing to smooth and reliable flap actuation.

• Application-Specific Material: Manufactured from a specific bearing material chosen by Textron engineers for the load, environment, and wear characteristics of the flap system.

• Flight-Critical Component: Essential for the safe and reliable operation of the aircraft's wing flap system.

Technical Specifications

• Part Number: 0523919

• Component Type: Flap Roller Bushing / Sleeve Bearing

• OEM Authority: Textron Aviation (Cessna)

• Material: Must be confirmed by Textron Aviation documentation. Likely Bearing Bronze or a high-strength, low-friction polymer.

• Finish: Per OEM specification.

• Dimensions (ID, OD, Length): Per Textron Aviation Engineering Drawing 0523919. These are precision dimensions critical for fit within the roller assembly.

• Governing Specification: Textron Aviation Engineering Drawing 0523919.

Aircraft Compatibility

This OEM flap roller bushing is the specified component for the flap roller assemblies on a wide range of Cessna's most popular single-engine aircraft.

• Primary Textron Aviation Platforms:

  • Cessna 172 Skyhawk (various models)

  • Cessna 182 Skylane (various models)

  • Cessna 206 Stationair / Turbo Stationair

  • Cessna 210 Centurion / Turbo Centurion

Note: Verification of applicability is the absolute responsibility of the installer. The aircraft's current Illustrated Parts Catalog (IPC) for its specific serial number is the final and absolute authority for confirming part number eligibility.

Applications

• Sole Application: To serve as the internal bearing surface within the wing flap roller assembly (e.g., 0523920, 0523921), allowing the roller to rotate smoothly on its axle or pin.

Why Choose 0523919?

The smooth and symmetrical operation of wing flaps is critical for aircraft control at low speeds. Worn, cracked, or seized bushings within the flap rollers can cause binding, excessive friction, asymmetric flap deployment, or jamming. The genuine Textron OEM 0523919 bushing is the only part guaranteed to be manufactured from the correct, certified bearing material with the precise dimensions required for this application. Using non-certified parts risks premature wear, incorrect fitment leading to binding, or material failure under load, compromising the safety of the flight control system.

The 0523919 bushing serves as a plain journal bearing within the flap roller assembly. Its engineering function is to provide a low-friction interface capable of supporting the high radial loads imposed on the roller by aerodynamic forces acting on the flap. The material choice is critical for tribological performance. If made of bearing bronze (like SAE 660), it leverages the self-lubricating properties of leaded-tin bronze to minimize friction and prevent galling against the steel axle pin, especially under the oscillating, high-load conditions typical of flap operation. If made from an engineered polymer (like Nylon or Acetal), it relies on the polymer's inherent low coefficient of friction and high compressive strength. In either case, the bushing acts as a sacrificial element, designed to wear preferentially to the more expensive roller and axle components, simplifying maintenance and ensuring the long-term integrity of the flap track system.

Note: This is a flight-critical component. Flap roller bushings are wear items and must be inspected regularly in accordance with the aircraft maintenance manual for signs of excessive wear, elongation (ovality), cracking, or contamination, typically concurrent with inspection of the flap rollers themselves. Worn or damaged bushings must be replaced to ensure smooth and symmetrical flap operation. Installation typically requires pressing the bushing into the roller and potentially reaming it to size. This must be performed by a certified A&P mechanic.

Documentation

No public-facing OEM or regulatory documentation was located for this specific part number. All technical data, including material specifications, dimensions, installation procedures, and inspection criteria for the 0523919 bushing, are proprietary to Textron Aviation and are contained within the official Maintenance Manual and Illustrated Parts Catalog for the applicable aircraft model.