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AOL Series
Product Type
Heat Exchanger
Solution
Hydraulic Oil Cooling
Application
Industrial Applications
Technology
Brazed Aluminum
Vertical-Airflow Air-Cooled Brazed Aluminum Oil Cooler
The Thermal Transfer Products AOL Series is an industrial air-cooled oil cooler built on a rugged brazed aluminum bar-and-plate core, engineered for outstanding heat dissipation under extreme heat loads in a lightweight, compact package. It uses forced ambient air to cool compressor lube oil, rotary screw compressor oil, and gearbox oils — and it’s an excellent choice for converting medium-to-large water-cooled compressors to air-cooled cooling, eliminating water and sewer costs.
The AOL is designed for vertical airflow, discharging warm air up and away rather than blowing it at operators or nearby equipment — a real advantage in occupied plant spaces and heat-recovery setups. It’s available with AC or hydraulic fan motors, and every unit uses an aggressive turbulator that produces ultra-high heat transfer per envelope size.
The series includes nine models with oil-flow capacities from 15 to 120 GPM (57–454 LPM), sized for compressors from 35 to 400 HP (26.1–298.3 kW), with a maximum operating pressure of 250 PSI and maximum operating temperature of 300°F. TTP’s XSelector® sizing program — available online and as a mobile app — helps optimize model selection for performance and value.
Consult catalog for additional sizes and technical information.
Product Features
- Vertical air flow
- Bar and plate brazed aluminum core technology
- Provides the best heat transfer per given envelope size while minimizing pressure drop
- Air-side fin design minimizes fouling and static pressure ensuring long-term, reliable performance
- Welded fittings/ports and manifolds ensure structural integrity
- Standard SAE ports, Optional NPT or BSPP available
- Low Noise versions offer reduced speed motors for lower dBA levels
- Customized units are available to meet your OE specific performance requirements
| Ratings | |
|---|---|
| Maximum Operating Pressure | 250 PSI |
| Maximum Operating Temperature | 300°F |
| *CRN Rating | 235 PSI at 250°F |
| Heat Rejection | from 5–500 HP (4–372kW) |
| Flow Rate | 10–260 GPM (22–570lpm) |
| Materials | |
|---|---|
| Legs | Steel |
| Core | Aluminum |
| Fanguard | Steel |
| Connectors | Aluminum |
| Fan | Aluminum Hub, Plastic Blades |
| Shroud | Steel |
| Configuration | |
|---|---|
| Fluid Compatability | Petroleum/mineral oils Oil/water emulsion Water/ethylene glycol and Air |
| Standard ports | SAE |
| Product Options | |
|---|---|
| Port options | SAE NPT BSPP |
| Low noise | |
| Hydraulic motor | |
- All catalog product is available with short lead-times
- Expert application engineers are available to select and size the right product for your application
- XSelector®* is a great tool for optimizing the sizing of TTP coolers. Check out the Apple and Android app stores to download the XSelector® App.
- Our distributor One Status portal allows for on demand quoting of coolers and looking up order status.
- Custom designs are available
* To register for XSelector® please go to www.thermaltransfer.com/get-in-touch/ and complete the XSelector® Inquiry form and submit.
Download the XSelector® for both Apple and Android formats by searching for XSelector® in their App Stores. You must first register for XSelector® before using it on mobile devices.
Documents
Brochures
AOL Technical Information
Brochures
AOL Series
Brochures
AOL Accessories
Service Parts
AOL Series Service Parts
Frequently Asked Questions
It’s an industrial air-cooled oil cooler from Thermal Transfer Products, built on a brazed aluminum bar-and-plate core, that uses forced ambient air to cool oil under high heat loads.
Rotary screw compressor oil, compressor lube oil, and gearbox oils — and it’s commonly used to convert water-cooled compressors to air-cooled cooling.
It directs hot exhaust air up and away from operators and equipment instead of blowing it across the work area — useful in occupied spaces and for heat recovery.
Nine models with oil flow from 15 to 120 GPM (57–454 LPM), sized for compressors from 35 to 400 HP (26.1–298.3 kW), with a maximum operating pressure of 250 PSI and maximum operating temperature of 300°F.
AC or hydraulic fan motors, so you can match the drive to the power available at the installation.
Both use brazed aluminum bar-and-plate cores. The AOL is specifically configured for vertical airflow and is oriented toward compressor and gearbox oil cooling; the BOL/BOLR has horizontal air flow and is available with T-BAR core and bypass options. Confirm which fits your mounting and airflow needs.
Configure the AOL Series
3D Configurator
Our 3D Product Configurator will allow you to build up the cooler with specific options that are required for your application, view what you have created in 3D, then download the model directly into your format to complete your modeling project.
Talk to an engineer at TTP.
Finding the right thermal management solution shouldn’t be a guessing game. Whether you need a quick price quote, technical specs, or a fully custom engine cooling system designed from the ground up, our team is ready to help.
Fill out the form below, and one of our application engineers will reach out to ensure your equipment stays cool under pressure.