USA / English
Latinoamérica / EspañolCase Drain Oil Cooler — Rear TEFC Motor-Mount, No Fan Required
The Thermal Transfer Products Industrial RM Series is a compact, low-cost, low-flow air-cooled oil cooler designed specifically for hydraulic case-drain cooling. It mounts on the rear of an existing TEFC (totally enclosed fan-cooled) electric motor and uses that motor’s own fan airflow to cool the oil — so it needs no fan or motor of its own, saving cost, space, and installation effort.
Its efficient design includes multiple-pass flow options as standard, and an adjustable mounting plate lets the cooler mate precisely with the electric motor’s fan (on the RM-19 and RM-22). Built with a copper-tube/aluminum-fin core, a protected steel cabinet, and a washable stainless air filter, it’s well suited to hydraulic power units where pump case-drain flow must be cooled without adding a dedicated cooling package.
The RM Series is offered in multiple sizes with SAE, NPT, or metric connections and mounting brackets included. TTP’s XSelector® sizing program — available online and as a mobile app — helps select the right model for your case-drain flow and heat load.
Consult catalog for additional sizes and technical information.
Low-Cost Air-Cooled Hydraulic Oil Cooler — Copper Tube / Aluminum Fin
The Thermal Transfer Products Industrial AOC Series is a low-cost air-cooled hydraulic oil cooler built with a copper-tube, aluminum-fin core and an AC fan drive. It’s designed for basic hydraulic power unit applications and lower flow rates, cooling hydraulic oil with ambient air where an economical, industrial-duty cooler is the priority.
The AOC Series is available with or without an internal bypass, and its dual-rated 50/60 Hz electric motor (single- or three-phase) allows for application flexibility worldwide. A standard removable air filter prevents air-side core blockage from dust and debris, and aggressive turbulators deliver optimal heat rejection at lower flow rates. Connections are available in NPT or BSPP, and the serviceable bypass valve is built into the tubes without affecting external dimensions (the smallest AOC-08 model is the exception).
The series covers oil flows up to 150 GPM, with a maximum operating pressure of 300 PSI and a maximum operating temperature of 350°F. To support system design, the AOC Series is backed by downloadable 3D CAD models, technical documentation, and application engineering support to simplify OEM integration. TTP’s XSelector® sizing program — available online and as a mobile app — helps optimize model selection.
Consult catalog for additional sizes and technical information.
Air-Cooled Hydraulic Oil Cooler with Replaceable Air Filter
The Thermal Transfer Products Industrial AOF Series is an air-cooled hydraulic oil cooler built with a copper-tube, aluminum-fin core and an AC fan drive, distinguished by a replaceable air-side filter that protects the heat exchanger in adverse environments. In dusty, dirty, or debris-heavy settings, the filter keeps the fins from clogging and preserves cooling performance — making the AOF the filtered version of TTP’s AO Series for the same medium-flow, moderate-heat-removal duty.
Like the AO Series, it cools hydraulic oil (and fluids such as glycols) with ambient air, and offers a versatile one- or two-pass configuration to tune heat transfer and pressure drop. Adjustable cabinet louvers let you regulate the direction of heated exhaust air, and an optional internal pressure bypass protects the core during cold starts and pressure spikes.
The AOF is well suited to hydraulic power units and industrial machinery operating in foundries, mills, quarries, woodworking, agriculture, and other dirty environments where an unfiltered cooler would foul quickly. Available in single- and three-phase motor configurations, it’s backed by downloadable 3D CAD models, technical documentation, and application engineering support. 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.
Air-Cooled Hydraulic Oil Cooler — Copper Tube / Aluminum Fin
The Thermal Transfer Products Industrial AO Series is an air-cooled hydraulic oil cooler built with a copper-tube, aluminum-fin core and an AC fan drive. It cools hydraulic oil (and fluids such as glycols) using ambient air, and is ideal for medium flow rates and moderate heat removal in industrial hydraulic systems and hydraulic power units.
The versatile design supports a one- or two-pass configuration, and adjustable cabinet louvers let you regulate the direction of heated exhaust air. An optional internal pressure bypass protects the core during cold starts and pressure spikes. Product options include foot brackets, SAE and metric connections, and a corrosion-resistant marine coating for harsh environments.
The series covers heat rejection from 1 to 36 HP (1.3–48 kW) and oil flow from 2 to 100 GPM (4–220 LPM), with a maximum operating pressure of 300 PSI and maximum operating temperature of 400°F. To simplify system integration, the AO Series is fully supported with 3D CAD models, downloadable technical documentation, and application engineering support. TTP’s XSelector® sizing program — available online and as a mobile app — helps optimize model selection.
Consult catalog for additional sizes and technical information.
High-Performance Air-Cooled Hydraulic Oil Cooler — High Flow, Low Pressure Drop
The Thermal Transfer Products Industrial AOVH Series is a high-performance air-cooled hydraulic oil cooler built with a copper-tube, aluminum-fin core. As the high-capacity version of TTP’s AO Series, it delivers high heat rejection and low pressure drop for high-flow applications, using a double-core, AC-fan-driven design in a compact footprint. Its High-Low Turbulator design is what yields high flow capacity with low flow pressure, making it well suited to demanding, continuous-duty cooling.
The AOVH cools hydraulic oil (and fluids such as glycols) with ambient air, and is widely used on hydraulic power units, injection molding machines, gear drives and gearboxes, machine tools, torque converters, and marine equipment. A high-performance fan and adjustable cabinet louvers let you regulate the direction of heated exhaust air, and the versatile design supports one- or two-pass flow. Two-pass units (the AOVHR configuration) route oil through the core twice for greater heat rejection and add an integral relief bypass valve that protects against high backpressure during cold starts, high-viscosity operation, or pressure spikes.
Maximum operating pressure is 300 PSI with a maximum operating temperature of 400°F. Fan motors are built for fan duty and rated for ambient temperatures up to 104°F, with single- and three-phase options and explosion-proof motors available for hazardous locations. To simplify system integration, the AOVH Series is fully supported with 3D CAD models, downloadable datasheets, and technical documentation, and TTP’s XSelector® sizing program helps optimize model selection.
Consult catalog for additional sizes and technical information.
T-BAR™ Air-Cooled Oil Cooler — High Viscosity Fluids, High Shock Loads
The Thermal Transfer Products OCA Series is a high-performance, forced-air oil cooler engineered for high heat rejection, high-viscosity fluids, and rough operating environments. It’s built around TTP’s patented T-BAR™ solid extruded-tube core — where other TTP lines offer T-BAR™ as an option, the OCA is designed around it, giving the series exceptional durability under high shock loads and high pressure spikes while reducing pressure drop with thick, viscous oils.
Its rugged steel construction is more efficient and lighter in weight than competitor models, and the series is available in a wide range of sizes for both mobile and industrial applications. Because it cools with ambient air, the OCA provides ample cooling in locations where cooling water is costly, restricted, or simply unavailable — avoiding water and sewer costs and the corrosion and scaling of water-cooled systems.
The OCA is designed for integration into hydraulic power units and mobile machinery cooling circuits where air-cooling is preferred, with a maximum operating pressure of 250 PSI and a maximum operating temperature of 350°F. TTP’s XSelector® sizing program — available online and as a mobile app — helps select the right model for your flow, heat load, and fluid viscosity.
Consult catalog for additional sizes and technical information.
Air-Cooled Brazed Aluminum Oil Coolers for Industrial & Hydraulic Systems
The Thermal Transfer Products BOL/BOLR Series is an industrial air-cooled hydraulic oil cooler built on a brazed aluminum bar-and-plate core. It delivers outstanding heat dissipation for extreme heat loads in a rugged, lightweight, and compact package, making it well suited to hydraulic power units, hydraulic presses and industrial machinery, and gearbox and lube-oil cooling circuits where high thermal loads run continuously.
Every unit uses TTP’s proven brazed aluminum core engineered with an aggressive turbulator that produces ultra-high heat transfer per envelope size. Coolers are available with AC or hydraulic fan motors, and TTP’s exclusive T-BAR™ extruded-tube cores are offered for high-viscosity oils and highly fouling fluids to reduce pressure drop.
Two internal bypass options — pressure bypass or temperature/pressure bypass — protect the core and improve cold-start performance. Because the bypass is internal, it eliminates extra external piping, which lowers installed cost and helps the cooler come out of bypass faster on cold starts. A low-noise option runs the motor at reduced speed for sound-sensitive installations.
The series covers a heat-rejection range from 5 HP (4 kW) to 630 HP (465 kW), with a maximum operating pressure of 250 PSI and maximum operating temperature of 350°F. TTP’s XSelector® sizing program — available online and as an Apple and Android app — helps optimize cooler selection for performance and value.
Consult catalog for additional sizes and technical information.
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.