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066-15300 – Cleveland (Parker Hannifin) Metallic Brake Lining
Available now through the AirParts Aero marketplace.
Overview Section
The Cleveland 066-15300 is a high-performance Metallic Brake Lining designed for heavy-duty aviation braking applications. Unlike standard organic linings, this metallic (sintered) variant is engineered for aircraft with high kinetic energy requirements, such as high-performance turboprops and light jets.
Manufactured by Parker Hannifin’s Cleveland Wheels & Brakes division, the 066-15300 is designed to operate at significantly higher temperatures without experiencing "brake fade." The metallic composition allows for a more aggressive friction coefficient and superior heat conductivity, moving thermal energy away from the brake disc more efficiently during short-field landings or high-speed rejected takeoffs (RTO).
Key Features Section
Sintered Metallic Composition: Formulated from a blend of copper, iron, and friction modifiers to provide consistent braking torque across a wide temperature spectrum.
Superior Heat Tolerance: Specifically designed to maintain structural integrity and friction levels at temperatures where organic linings would glaze or carbonize.
High Kinetic Energy Rating: Optimized for aircraft with higher gross weights and faster landing speeds, offering maximum stopping power.
Anti-Corrosive Properties: The metallic matrix is treated to resist oxidation and "stiction" to the brake disc, even in high-humidity or salt-air environments.
Precision Three-Hole Design: Features three pre-drilled mounting holes for secure attachment to the pressure plate and back plate using heavy-duty rivets.
Low Wear Rate: Despite its aggressive friction profile, the 066-15300 is engineered to provide a long service life while being "kind" to Cleveland’s high-alloy brake discs.
Technical Specifications Section
| Specification | Detail |
| Part Number | 066-15300 |
| Manufacturer | Cleveland Wheels & Brakes (Parker Hannifin) |
| Material Type | Sintered Metallic |
| Number of Holes | 3 |
| Common Caliper Series | 30-95, 30-164, 199-series (High Energy) |
| Rivets Required | 105-00200 (Typically 3 per lining) |
| FAA-PMA Status | Approved for specific airframe/wheel applications |
Aircraft Compatibility Section
The 066-15300 is a critical component for several high-performance aircraft utilizing Cleveland heavy-duty conversions:
Beechcraft King Air 90 / 200 / 300 Series: The standard lining for many high-float landing gear and heavy-weight configurations.
Cessna 400 Series (402, 414, 421): Utilized for the increased thermal demands of twin-engine cabin-class aircraft.
Pilatus PC-12: Found in specific brake assemblies requiring high-energy metallic friction.
Piper Cheyenne Series: Optimized for the high-speed deceleration requirements of corporate turboprops.
Cessna 208 Caravan: Ideal for rugged, short-strip operations where frequent, heavy braking is expected.
Technical Applications & Safety
Metallic linings like the 066-15300 require a specific "Conditioning" or "Bedding-In" procedure after installation. This process transfers a microscopic layer of friction material to the disc, ensuring maximum performance.
Safety Warning: Never mix metallic and organic linings on the same wheel. This will cause uneven braking torque, leading to directional control issues (pulling) and potential brake disc warping. Additionally, ensure that the brake disc is within the minimum thickness wear limits specified in the Cleveland Maintenance Manual; metallic linings generate higher surface heat, which can lead to disc cracking if the disc mass is insufficient.
Technical Engineering Insight
The engineering value of the 066-15300 lies in its Thermal Conductivity and Sintering Matrix. In high-energy braking, the primary challenge is "Heat Soak" into the hydraulic fluid. The sintered metallic structure of the 066-15300 acts as a more efficient thermal conductor than organic fiber, allowing the brake disc to dissipate heat into the surrounding air more rapidly. Furthermore, the metallic particles are fused under high pressure and temperature to ensure the lining does not "delaminate" under the extreme shear forces of a maximum-braking landing.1 Sourcing genuine Cleveland 066-15300 linings ensures that the friction coefficient ($μ$) remains stable even as the lining approaches its wear limits.
Installation & Maintenance Addendum
Rivet Installation: Use a specialized brake rivet press to set the 105-00200 rivets. Hand-hammering rivets can crack the sintered material of the 066-15300, leading to a catastrophic lining failure in flight.
Disc Preparation: Before installing new 066-15300 linings, deglaze the brake disc with 100-grit sandpaper and clean with an approved solvent (like IPA) to ensure a proper bedding surface.
Wear Limits: Replace the linings when the material thickness reaches 0.100 inch (2.54 mm) or as specified by the wear-indicator pin on the caliper.
