8A-6311-00 Series 4

8A-6311-00 Series 4 Fan Overview

The 8A-6311-00 Series 4 is an aircraft axial cooling fan designed to supply airflow for cooling of engine systems, transmission units, and onboard equipment. The unit operates as part of helicopter thermal management systems and ensures stable heat removal during flight and ground operation under varying environmental conditions.

8A-6311-00 Airflow Function

The fan converts rotational energy into directed axial airflow within enclosed or ducted cooling circuits. It provides continuous airflow to heat exchangers, gearbox assemblies, and environmental control equipment, maintaining thermal stability of critical onboard systems during operation.

8A-6311-00 Aircraft Application

The fan is installed on helicopters of the Mi-8, Mi-17, and Mi-171 family and other rotorcraft equipped with compatible cooling systems. It is used in engine cooling, transmission thermal regulation, and air-conditioning systems.

8A-6311-00 System Integration

The unit consists of an impeller, hub, housing, and mounting interface and operates within integrated cooling circuits. It is interchangeable with earlier series and designed for multi-cycle operation within assigned service limits. The product is also known under alternative designations 8A-6311-00, 8A6311-00, 8A-6311-00 S4, 8A631100.

Product Type: Aircraft axial cooling fan
Function: Airflow generation for cooling systems
Application / Where Used: Helicopter cooling, transmission thermal management, air-conditioning systems
System / Installation Area: Engine and gearbox cooling circuits
Compatible Aircraft / Equipment: Mi-8, Mi-17, Mi-171
Rotation Direction: Right-hand (viewed from air inlet)
Nominal Speed: 6000 ± 60 rpm
Impeller Diameter: 399 mm
Airflow Output: ≥ 4.61 m³/s
Pressure Head: ≥ 495 mm H₂O
Power Consumption: ≤ 58.65 hp
Operating Temperature Range: −60 to +60 °C
Weight: Not more than 14.5 kg
Interchangeability: Compatible with Series 1, 2, 3
Assigned Resource: 2000 h (time to first overhaul)
Assigned Service Life: 6500 h (with 3 overhauls)
Storage Life: 6 years (3 years outdoor preserved)
Technical Documentation: Passport for 8A-6311-00 Series 4

All shipments are carried out from our international warehouse in Dubai (UAE), as well as from our partners’ remote warehouses.

In Stock — items available in stock at the Dubai warehouse are dispatched within 5–10 business days after receiving 100% prepayment.

Remote Stock — items available at our partners’ remote warehouses are supplied within an average of 30–45 business days after receiving 100% prepayment.

Pre-Order — made-to-order products are manufactured and delivered within an average of 45–60 business days. Payment terms: 50% advance payment to start production, with the remaining 50% paid before dispatch from the Dubai warehouse after full readiness for shipment.

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.