KT135A-030

KT135A-030 pneumatic disc brake for KT135A wheel

KT135A-030 is an aircraft pneumatic disc brake used as part of the KT135A main braked wheel assembly. The wheel is designed for an aircraft tire size of 720 × 320 mm and is associated with main landing gear installations on Mi-24 family helicopters, including Mi-24V and Mi-35 variants, depending on documentation. The brake unit provides wheel braking after landing, supports ground maneuvering control and holds the aircraft in place during parking or engine run-up conditions.

Brake function of KT135A-030

The KT135A-030 brake creates braking torque by compressing a pack of friction discs. When compressed air is supplied into the brake block cavity, the pistons press the disc pack and slow the rotating wheel relative to the fixed landing gear axle. This allows the helicopter or aircraft to reduce speed after landing and remain stationary when parked. Correct operation of the brake is important for ground safety, controlled rollout, parking stability and reliable operation of the KT135A wheel-brake assembly.

Pneumatic actuation of KT135A-030

Unlike hydraulic wheel brakes used on many large aircraft, KT135A-030 is a pneumatic brake. It operates from compressed air supplied to the brake system. According to the source context, the nominal operating pressure is 33 kgf/cm², with an allowable operating range of 31 to 34.5 kgf/cm². This pressure acts on the brake pistons and compresses the friction discs. During maintenance, the brake should be checked together with pneumatic lines, sealing elements, air pressure supply, pistons and the condition of the wheel assembly.

Disc pack and friction pair

The KT135A-030 brake uses a disc-type friction package. According to the supplied information, the pack includes four friction discs with alternating rotating and stationary elements. The friction pair is based on FMK-845 metal-ceramic material and MKV-50 steel / cast iron material. This combination is used to maintain braking efficiency under high temperature and friction loads. Wear limits, disc flatness, scoring, overheating marks and friction layer condition should be checked during repair or scheduled inspection.

Application on Mi-24 and related aircraft

KT135A-030 is primarily associated with the KT135A main braked wheel used on Mi-24 family helicopters. Application may include Mi-24, Mi-24V, Mi-35 and related modifications, depending on the aircraft configuration and maintenance documentation. The source context also mentions use in wheel-brake installations for Be-30 / Be-32 aircraft. Since wheel and brake installations may differ by aircraft version, operational status and modernization, applicability should be confirmed through the aircraft parts catalogue, landing gear documentation and wheel-brake assembly records.

Identification and ordering of KT135A-030

Before ordering KT135A-030, it is important to confirm whether the request concerns the brake block only, the complete KT135A wheel-brake assembly, the disc pack, seals, pistons or separate repair components. The buyer should specify aircraft type, required quantity, condition category, documentation requirements and whether the brake is intended for operational replacement or overhaul stock. Product passport, overhaul records, inspection documents and compatibility with the KT135A wheel should be agreed before shipment.

Product Type: Aircraft pneumatic disc brake / brake block
Designation: KT135A-030
Alternative Designations: KT-135A-030, KT135A.030, КТ135А-030, КТ-135А-030
Function: Braking and parking hold of the main landing gear wheel
Application / Where Used: KT135A main braked wheel assembly
System / Installation Area: Main landing gear wheel-brake system
Compatible Aircraft / Equipment: Mi-24 family helicopters, including Mi-24V and Mi-35, and Be-30 / Be-32 aircraft according to source context and documentation
Associated Wheel: KT135A main braked wheel
Compatible Tire Size: 720 × 320 mm
Typical Tire Reference: 15A aircraft tire, according to source context
Brake Type: Disc brake with friction disc pack
Actuation: Pneumatic, by compressed air
Nominal Operating Pressure: 33 kgf/cm²
Operating Pressure Range: 31 to 34.5 kgf/cm²
Braking Torque Reference: 190 kgf·m
Absorbed Kinetic Energy Reference: 190 kgf·m per braking event during autorotation landing context, according to source context
Application Speed Reference: Up to 180 km/h according to source context
Disc Pack Quantity: 4 friction discs
Friction Pair Materials: FMK-845 metal-ceramic material and MKV-50 steel / cast iron material
Operating Principle: Compressed air acts on pistons, which compress the friction disc pack
Related Components: Brake body, pistons, seals, friction discs and repair kit components depending on supply scope
Condition: New / As-Stored / Overhauled / Serviceable, depending on availability
Technical Documentation: Product passport, aircraft maintenance documentation, wheel-brake system documentation, overhaul records and inspection documents if available

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Warranty
All products are covered by a standard 6-month warranty.
Extended warranty is available upon request and is agreed individually; it may affect the final product price.