?unique=bfc270f)
075-18800 – Cleveland Wheel & Brake Systems Torque Plate Assembly
Available now on the Airparts.aero Marketplace.
The Cleveland Wheel & Brake Systems 075-18800 is a flight-critical, high-stress landing gear component engineered explicitly for the 30-210, 30-210A, and 30-210C main gear disc brake assemblies. Positioned as the foundational interface between the non-rotating landing gear axle flange and the dynamic, floating brake caliper housing, this heavy-duty torque plate absorbs and neutralizes the massive rotational shear forces generated upon lining-to-disc engagement. By providing a rigid, dimensionally unyielding anchor path, the 075-18800 prevents structural deflection and misalignments within the brake assembly, protecting the system against landing-roll failure during high-energy braking profiles.
Manufactured by the Aircraft Wheel & Brake Division of Parker Hannifin (formerly Cleveland Wheel & Brake), the 075-18800 is forged from an advanced high-tensile structural alloy selected for its fatigue resistance and high strength-to-weight ratio. The torque plate features precision-machined anchor pins and tight-tolerance bolt indexing rings designed to distribute hydraulic reaction forces symmetrically into the gear strut. Its surface finish undergoes specialized passivation treatment to safeguard the base metallurgy from galvanic corrosion driven by coastal atmospheric moisture, de-icing chemicals, and intense frictional heat radiating directly from close-proximity brake discs.
The Cleveland 075-18800 represents the industry standard for tactical durability across multi-surface aircraft operations. Its design optimizes torque transfer paths, ensuring that maximum braking pressure is translated smoothly into linear deceleration without inducing structural harmonic vibrations or component fatigue cracking. For A&P mechanics, flight operations procurement, and regional cargo fleet managers, integrating this genuine OEM rotable torque plate ensures structural integrity and absolute airworthiness compliance across demanding commercial, agricultural, and business flight rotations.
Key Features
High-Tensile Forged Metallurgy: Engineered to survive high-amplitude structural shear and bending moments under maximum kinetic energy braking cycles without physical deflection.
Precision-Machined Anchor Interface: Features strict dimensional geometric parallelism on the anchor rods to guarantee smooth caliper sliding action and prevent uneven pad wear or binding.
Anti-Corrosive Shielding Finish: Subjected to an aerospace-grade passivation and plating matrix to counteract environmental fluid contamination, chemical wash spray, and high thermal cycling oxidation.
Optimized Shock and Load Distribution: Designed with symmetrical mounting hole layouts that dissipate instantaneous touchdown deceleration torque evenly across the main gear landing strut flange.
Genuine OEM Structural Baseline: Eliminates the risk of mounting layout deviations, maintaining full alignment within 30-210 series brake housings to uphold the original type-certification basis.
Technical Specifications
Part Number: 075-18800
Component Type: Brake Torque Plate Assembly / Anchor Plate
OEM Manufacturer: Cleveland Wheel & Brake Systems (Parker Hannifin Corp.)
Brake Assembly Matches: 30-210, 30-210A, 30-210C Series
Material Composition: Forged Structural Steel/High-Tensile Alloy Matrix (Exact proprietary specification must be confirmed via OEM production prints)
Surface Finish: Anti-Corrosion Cadmium Plating or Zinc-Nickel Passivation
Mounting Interface: Flange bolt pattern designed for heavy landing gear axles (Cross-reference specific wheel/axle prints for dimensions)
Drive Configuration: Floating Caliper Slide Anchor Pins Integrated
ECCN: 9A991.d
Harmonized Tariff Code: 8803.20.0060
Certification Basis: FAA TSO-C26 Approved Component
Aircraft Compatibility
Heavy Agricultural & Utility Airframes: Air Tractor AT-802, AT-802A, AT-802AF FireBoss, Thrush Aircraft T660P (Thrush 660) Series.
Regional Turboprops & Heavy Utility Transport: Platforms modified via STC or OEM factory production utilizing specialized 11.00-12 landing gear layouts matched with 30-210 series hydraulic brakes.
Note: Final airframe configuration control and tail number applicability must be verified strictly by referencing the target aircraft’s active Illustrated Parts Catalog (IPC), Cleveland Application Manual, or relevant Supplemental Type Certificate (STC) blueprints.
Applications
Deceleration Force Grounding: Functions as the primary fixed reaction anchor converting kinetic wheel energy into structural aircraft deceleration.
Caliper Guide and Support Base: Serves as the precision slider baseline ensuring that the floating brake cylinder moves freely without angular binding or hydraulic twisting stress.
Why Choose 075-18800?
Installing a genuine OEM Cleveland 075-18800 torque plate prevents the severe landing gear failures caused by non-certified rotable hardware or generic copies. Under heavy braking, an inferior or out-of-tolerance plate can suffer from localized elastic deformation, shifting the anchor pin geometry away from true alignment. This deviation binds the brake caliper, causing uneven pad application, rapid lining vitrification, severe brake fade, or complete wheel lockup that can tear through a main gear tire. Cleveland's rigorous metallurgical manufacturing controls ensure zero non-metallic inclusions, providing a reliable service life that lowers direct operational costs per landing and ensures predictable braking control on unpaved or muddy runways.
The performance mechanics of the Cleveland 075-18800 torque plate turn on the principles of frictional torque conversion and anisotropic stress resolution. When hydraulic pressure forces the brake piston outward, the resulting clamping force clamps the brake linings onto the rotating disc, initiating a massive transformation of kinetic energy into high thermal flux. This engagement creates a powerful reactive rotational torque that seeks to spin the entire caliper assembly around the axle spindle. The 075-18800 dampens this force by acting as a rigid, low-deflection structural beam that re-routes the high shear stress directly through its fixed-flange indexing ring into the landing gear strut.
To maintain system equilibrium without binding, the plate's anchor pins must maintain perfect geometric parallelism relative to the axle centerline. Any deviation under heavy loads would cause uneven stress distribution across the floating caliper's bushings, leading to high-frequency brake chatter and micro-fretting along the mounting bolt layout. The forged alloy matrix features uniform grain directionality, preventing structural fracture propagation along internal stress concentrations. Additionally, its surface passivation treatment stops galvanic oxidation across the mechanical junctions, ensuring smooth sliding action and precise pad alignment throughout its operational service life.
Note: The Cleveland 075-18800 torque plate assembly is a flight-critical landing gear braking component. Corroded anchor pins, micro-cracking around mounting bolt holes, or structural warping can lead to catastrophic brake caliper seizing, wheel assembly damage, or loss of ground directional tracking. Torque plate inspections, anchor pin alignment verifications with a calibrated micrometer, and component replacement must be executed exclusively by a certified A&P/IA mechanic or authorized repair facility in strict compliance with the Cleveland Component Maintenance Manual (CMM) and FAA Advisory Circular AC 43.13-1B. Always apply specified torque values to the axle mounting bolts and verify the integrity of the torque plate slide bushings during every lining inspection.
Documentation
| Specifications | |
|---|---|
| Cage Code | 33269 |
| 8130-3 Eligible | No |
| Hazmat Code | N/A |
| Hazmat(Y/N) | No |
