Engine Surface Coolers
Advanced engine surface coolers (SACOCs) are engineered to fit within engine cowlings and ducts, providing efficient heat dissipation in space-constrained environments. These lightweight, high-durability systems deliver strong thermal performance, vibration resistance, and reliable operation across a wide range of aerospace applications.
Overview
AMETEK Hughes-Treitler’s Engine Surface Air-Cooled Oil Coolers (SACOCs) are custom-engineered for commercial, military, and UAV engines. Built in lightweight aluminum plate-fin construction, they integrate within engine cowlings and ducts, using the available surface area and airflow to reject heat in tight spaces. Typical designs support oil inlet temperatures from 200°F to 250°F, oil flow rates of 6 to 12 GPM, and heat rejection of 60,000 to 100,000 BTU/hr. Each cooler is engineered around the platform’s weight, vibration, and pressure requirements, drawing on heat exchanger experience dating to 1947.
| Broad Range of Specifications (Typical Range) | |
| Weight | Typically from 8 lbs. (3.6 kg) to 12 lbs. (5.4 kg) |
| Oil Cooled | Compatible with oils such as MIL-L-23699 |
| Oil Proof Pressure | Up to 300 psig |
| Oil Flow Rate | Typically ranging from 6.0 gpm to 12.0 gpm (30-40 lpm) |
| Oil Inlet Temperature | From 200°F (93°C) to 250°F (121°C) |
| Heat Rejection | Ranging from 60,000 BTU/hr to 100,000 BTU/hr, depending on application |
| Construction | Lightweight, high-strength Aluminum with finned surface design for optimal heat dissipation |
Customized Solutions for Every Platform
Hughes-Treitler provides customized engine surface coolers for a variety of platforms, including military and commercial applications.
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Military Aircraft
A Legacy of Cooling Military Aircraft
Military engines leave little room for a cooler and no tolerance for one that fails. Hughes-Treitler’s surface air-cooled oil coolers are custom-engineered to fit tight engine installations on fighter and trainer, transport and refueling, rotary-wing, and UAV platforms, built for vibration and pressure cycling.
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Commercial Aircraft
Reliable Cooling for Commercial Aircraft
Our air-to-air heat exchangers are built for commercial aerospace platforms such as widebody/narrowbody, regional and business jets, rotary, and eVTOL/UAV systems, delivering efficient thermal management with reliable performance and comprehensive aftermarket support throughout the service globally.
Business Jets
Solutions for Business and Regional Jets
Reliable temperature management is essential for business and regional jet operations. Our engine surface coolers help dissipate excess heat efficiently, supporting stable engine conditions, improving overall system effectiveness, and contributing to dependable performance throughout every stage of flight.
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Helicopters
Rotary Aircraft Engine Cooling
Helicopter systems generate significant heat in limited spaces. Our air-to-air heat exchangers provide efficient thermal management through a compact, lightweight design, helping maintain system, enhance reliability, support mission readiness and enable effective cooling without compromising performance.
Proven Performance
With more than 75 years of experience, AMETEK Hughes-Treitler has delivered custom thermal management solutions for leading military and commercial aircraft programs. Backed by proven engineering expertise and reliable performance, Hughes-Treitler continues to support aerospace applications around the world.
Proven Performance
Engine Surface Cooler for Major Turbofan Engine Platform
AMETEK Hughes-Treitler provides surface air/oil coolers to major Turbofan Engine platforms that cool engine fan airflow over its external finned surface.
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