// Catalogue

Oil Coolers: Air Blast and Water Cooled Hydraulic Oil Coolers

Oil coolers pull heat out of hydraulic oil using air or water, so the system holds a steady temperature on hot days. TSA Hydraulics Engineering supplies them within the Filtration & Cooling family of our Motors & Drives range, alongside Heat Exchangers, Filters, Filters & Filter Elements and Accumulators & Monitoring.

Most cooler cores don’t die from heat. They split from pressure, often on a cold morning when thick oil slams into the core all at once. A bypass valve across the cooler is cheap insurance. Send the cooler model, or your heat load and oil flow, and we’ll match a genuine unit or an equivalent, shipped fast from Sydney.

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// Buying guide

Types of Oil Cooler

Air blast coolers: an aluminium core with a fan pushing air through it. They need no water, so they work almost anywhere.
Water cooled oil coolers: compact units that use a water supply, for big heat loads or tight spaces.
Offline cooling loops: a small pump, cooler and filter on their own circuit, cooling the tank whether the machine is working or not.
Return line coolers: fitted in the main return, the simplest option on many power units.

Fan Drive Options

AC electric fans: for fixed plant with mains power, in single or three phase.
DC fans: 12 or 24 V, for trucks, mobile plant and remote sites.
Hydraulic motor fans: driven by the machine’s own oil, common on heavy mobile equipment.

Many fans can be switched by a thermostat, so they only run when the oil needs cooling.

Protecting the Core

Fit a bypass check valve across the cooler to protect it from cold start pressure spikes.
Keep the return line back pressure within the core’s rating.
Clean the fins regularly, because dust and grass clog them fast.
Check the fan blades, guards and motor bearings at each service.

Sizing an Oil Cooler

Estimate the heat load in kW. On many power units, 20 to 30% of the input power becomes heat.
Note the oil flow through the cooler.
Use the hottest air or water temperature the site will see.
Pick the oil temperature you want to hold.
Check the oil pressure drop through the core.

An undersized cooler runs flat out all day. An oversized one can overcool in winter, so add a thermostat or bypass.

Where Oil Coolers Work

Mining and quarrying: crushers, conveyors and mobile plant working long, hot shifts.
Agriculture and mobile machines: DC and hydraulic fan coolers on tractors, harvesters and trucks.
Manufacturing: presses and injection moulding power units running all day.
Marine: deck machinery and steering gear, often with seawater rated cores.

Signs Your Cooler Is Struggling

Oil running hotter than usual at the same load.
Fins blocked with dirt or oil.
A fan that doesn’t start, or runs slowly.
Oil leaks from the core or fittings.

Temperature gauges and switches from our accumulators and monitoring range make these easy to catch early.

Oil Coolers Specifications to Check

Heat rejection in kW at your oil flow and temperature difference
Maximum oil flow and working pressure
Fan type, voltage and power
Core size and mounting
Port sizes and bypass valve option
Noise level, if the site has limits

Why Buy From TSA Hydraulics Engineering

As an oil coolers supplier, we size the cooler for your hottest days and real heat load, not just the old model number. You get clear prices in AUD, OEM or equivalent options, and help sourcing oil coolers replacement parts such as fans, fan motors, thermostats and bypass valves. We tell you upfront whether a unit is genuine or an equivalent.

// FAQs