KT158-030 / KT158.030-1

KT158-030 / KT158.030-1 main aircraft disc brake

KT158-030, also written as KT158.030-1, is an aircraft main wheel disc brake assembly used on Il-76 family aircraft. The brake is installed inside the KT158.010 main wheel and works as part of the main landing gear wheel-brake system. It is intended to absorb braking energy during landing rollout, taxiing and rejected takeoff conditions. The unit is hydraulically actuated and operates together with the aircraft braking system, brake disc pack, main wheel and compatible high-pressure tire.

Brake function of KT158-030 on Il-76

The KT158-030 brake provides controlled deceleration of the aircraft through friction between rotating and stationary brake discs. During braking, hydraulic pressure acts on the brake pistons, compressing the disc pack and converting aircraft kinetic energy into heat. This function is essential for stopping the aircraft after landing and controlling speed during ground movement. The brake must be checked together with the main wheel, tire, hydraulic lines, anti-skid system and brake control components because the complete wheel-brake system works as one assembly.

KT158-030 installation inside KT158.010 wheel

The KT158-030 brake is structurally installed inside the KT158.010 main braked wheel used on Il-76 landing gear. The rotating brake discs engage with the internal splines of the wheel, while the stationary discs are held by the brake body. This arrangement allows the wheel and brake to operate as an integrated wheel-brake unit. For correct replacement, it is important to confirm whether the customer requires the brake assembly only, the wheel only, the disc pack, or a complete wheel and brake set.

Multi-disc hydraulic brake design

KT158-030 is a multi-disc hydraulic aircraft brake with piston actuation. The brake uses aviation hydraulic fluid, typically AMG-10 according to the source context, supplied under pressure to the brake cylinders. The disc package includes rotating metal-ceramic discs, stationary bimetallic discs and a support disc, depending on the exact brake configuration. This multi-disc arrangement provides the friction area and heat capacity required for a heavy transport aircraft. Wear limits, disc condition, piston sealing and hydraulic leakage should be checked during maintenance.

Associated brake disc components

The KT158-030 brake is associated with several related components used in the Il-76 wheel-brake assembly. KT158-040 is referenced as the support disc or brake disc block. KT126-120 rotating metal-ceramic discs engage with the wheel splines, while N8U.097-410-15 bimetallic stationary discs are fixed on the brake stator / body side. The exact disc set should be verified by aircraft documentation and brake assembly records, because spare parts requests may refer to the complete brake or to individual disc-pack components.

Identification and ordering of KT158-030

Before ordering KT158-030 / KT158.030-1, the aircraft type, brake configuration, required quantity, condition and documentation set should be confirmed. The unit may be required for landing gear maintenance, wheel-brake overhaul, operational replacement or spare parts stock for Il-76 aircraft. For correct supply, it is useful to specify whether the request concerns a complete brake assembly with disc pack or separate components such as housing, pistons, seals, repair kits or discs. Passport, overhaul certificate, test records and inspection documents should be agreed before shipment.

Product Type: Main aircraft disc brake / multi-disc hydraulic brake assembly
Designation: KT158-030
Alternative Designations: KT158.030-1, KT-158-030, KT 158-030, КТ158-030, КТ158.030-1
Function: Braking of main landing gear wheel during landing, taxiing and rejected takeoff conditions
Application / Where Used: Il-76 main landing gear wheel-brake system
System / Installation Area: Main landing gear / inside KT158.010 main wheel
Compatible Aircraft / Equipment: Il-76 family aircraft according to aircraft documentation
Associated Wheel: KT158.010 / KT-158-010 main aircraft wheel
Brake Type: Multi-disc hydraulic aircraft brake
Actuation: Hydraulic piston actuation
Working Fluid: AMG-10 aviation hydraulic oil, according to source context
Hydraulic Pressure Reference: Il-76 main hydraulic system nominal pressure 210 kgf/cm²; maximum operating pressure up to 250 kgf/cm², according to source context
Application Speed Range: Approximately 150–180 km/h for landing and rejected takeoff braking context
Brake Control: Through aircraft braking system with anti-skid / wheel lock protection where installed
Disc Pack Configuration: Alternating rotating and stationary brake discs
Rotating Discs: KT126-120 metal-ceramic discs, engaging with KT158.010 wheel splines
Stationary Discs: N8U.097-410-15 bimetallic discs, fixed on brake stator / body
Support Disc: KT158-040
Related Components: Brake body, cylinder block, pistons, seals, disc pack and repair kit components depending on supply scope
Condition: New / As-Stored / Overhauled / Serviceable, depending on availability
Technical Documentation: Product passport, aircraft maintenance documentation, brake system documentation, overhaul certificate, test records and inspection documents if available

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Returns & Changes (Restocking Fee)
For selected items, a RESTOCKING FEE of 10% may apply in case of return, order cancellation, or changes to the order specifications. This condition applies only to certain products and is confirmed at the order approval stage.

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.