Catalog › Hydraulic Oil Coolers
Hydraulic Oil Coolers: 60–220 l/min Fan-Cooled Oil-to-Air Heat Exchangers
Fan-cooled hydraulic oil coolers in 12 V, 24 V and 220 V; flow capacity from 60 to 220 l/min, body sizes from 240×240×45 to 720×700×63 mm.
Part of the energy spent in a hydraulic system never comes out as work; it turns into heat. Some power is lost as heat at every throttling valve, in the oil returning through the relief valve, in the pump's internal leakage and in every friction along the line. On small systems the surface of the tank and the pipework is enough to shed that heat; as the system grows or the duty cycle tightens it is not, and the oil starts to warm.
Thinning oil brings trouble in a chain. As viscosity falls, internal leakage in pump and valves rises, the system slows and generates still more heat — a loop that feeds itself. The oil film thins, metal surfaces come closer together and wear accelerates. Seals harden at high temperature, lose elasticity and begin to leak. The oil itself oxidises; it darkens, turns acidic and leaves a varnish deposit. The practical threshold is around 60 °C: a system that runs continuously above that is asking for a cooler.
The coolers in stock are of the oil-to-air type: the oil passes through a matrix while a fan blows air across it to carry the heat away. Selection turns on three values. First, the flow to be cooled (80–220 l/min); the cooler's capacity is set by the flow passing through the line. Second, the fan voltage — 12 V and 24 V models run from the vehicle's own supply on mobile hydraulics, 220 V models from the mains in fixed installations. Third, the body size (from 240×240×45 to 720×700×63 mm); the space allotted to the cooler on the machine and the opening the fan draws air through are planned around it.
A cooler is normally connected in the return line, just before the oil enters the tank. Because the matrix is not designed to withstand full system pressure it should not be connected directly into a pressure line; it is also sensible to use a bypass check valve to protect the matrix during cold starts. Capacity drops quickly once the air-side face becomes dusty — periodic cleaning is the cheapest way to recover it.
Brands and standards in stock
Don't see the brand you're after? Ask anyway — hydraulic oil coolers products are made to standard, so different brands carrying the same standard are equivalents.
Hydraulic Oil Coolers in stock — examples
| Product | Brand | Model / size | Manufacturer code |
|---|---|---|---|
| 2015 Hidrolik Soğutucu Yan Tip 240x240x45 — 80 LT/DK, 12 V | — | 80 LT/DK · 12 V | — |
| 2015 Hidrolik Soğutucu Yan Tip 240x240x45 — 80 LT/DK, 24 V | — | 80 LT/DK · 24 V | — |
| 2015 Hidrolik Soğutucu Yan Tip 240x240x45 — 80 LT/DK, 220 V | — | 80 LT/DK · 220 V | — |
| 2020 Hidrolik Soğutucu Yan Tip 240x240x63 — 100 LT/DK, 12 V | — | 100 LT/DK · 12 V | — |
| 2020 Hidrolik Soğutucu Yan Tip 240x240x45 — 100 LT/DK, 24 V | — | 100 LT/DK · 24 V | — |
| 2020 Hidrolik Soğutucu Yan Tip 240x240x45 — 100 LT/DK, 220 V | — | 100 LT/DK · 220 V | — |
| 2024 Hidrolik Soğutucu Yan Tip 300x300x63 — 120 LT/DK, 12 V | — | 120 LT/DK · 12 V | — |
| 2024 Hidrolik Soğutucu Yan Tip 300x300x63 — 120 LT/DK, 24 V | — | 120 LT/DK · 24 V | — |
| 2024 Hidrolik Soğutucu Yan Tip 300x300x63 — 120 LT/DK, 220 V | — | 120 LT/DK · 220 V | — |
| 2030 Hidrolik Soğutucu Yan Tip 350x350x63 — 140 LT/DK, 12 V | — | 140 LT/DK · 12 V | — |
| 2030 Hidrolik Soğutucu Yan Tip 350x350x63 — 140 LT/DK, 24 V | — | 140 LT/DK · 24 V | — |
| 2030 Hidrolik Soğutucu Yan Tip 350x350x63 — 140 LT/DK, 220 V | — | 140 LT/DK · 220 V | — |
| 2040 Hidrolik Soğutucu Yan Tip 450x450x63 — 160 LT/DK, 12 V | — | 160 LT/DK · 12 V | — |
| 2040 Hidrolik Soğutucu Yan Tip 450x450x63 — 160 LT/DK, 24 V | — | 160 LT/DK · 24 V | — |
| 2040 Hidrolik Soğutucu Yan Tip 450x450x63 — 160 LT/DK, 220 V | — | 160 LT/DK · 220 V | — |
| 2050 Hidrolik Soğutucu Yan Tip 520x550x63 — 180 LT/DK, 12 V | — | 180 LT/DK · 12 V | — |
| 2050 Hidrolik Soğutucu Yan Tip 520x550x63 — 180 LT/DK, 24 V | — | 180 LT/DK · 24 V | — |
| 2050 Hidrolik Soğutucu Yan Tip 520x550x63 — 180 LT/DK, 220 V | — | 180 LT/DK · 220 V | — |
| 2075 Hidrolik Soğutucu Yan Tip 720x700x63 — 220 LT/DK, 12 V | — | 220 LT/DK · 12 V | — |
| 2075 Hidrolik Soğutucu Yan Tip 720x700x63 — 220 LT/DK, 24 V | — | 220 LT/DK · 24 V | — |
| 2075 Hidrolik Soğutucu Yan Tip 720x700x63 — 220 LT/DK, 220 V | — | 220 LT/DK · 220 V | — |
| Fanlı Soğutucu 24 V DC — 60 LT/DK | — | 60 LT/DK · 24 V | — |
| Fanlı Soğutucu 220 V AC — 60 LT/DK | — | 60 LT/DK · 220 V | — |
This list is sorted by our highest-moving items and isn't the whole of our 23-item hydraulic oil coolers stock. If the size you need isn't listed, we very likely have it — just ask.
Manufacturer part numbers
These products are searched for in the field by the manufacturer's part number, not by our stock code. The code follows this pattern: TİP + HORTUM ÖLÇÜSÜ + DİŞ — for example EH14A-2. Every code in the lists below can be supplied; some are held in stock ready to ship.
Yağ soğutucu
Oil cooler. Every code listed can be supplied. The manufacturer's catalogue lists 52 codes in this series; all can be supplied.
52 codes
EH14A-2EMA3EH14B-2EH16B-2EH20B-4EH25B-4EH14B-4PEMA-3AE1063-FMD2-18EH060-2FMD1-10FMD2-10FMA2-10EH08A-2EH10A-2EH12A-2EH14A-4AHF-1000EH06A-2EH18B-2EH22B-2EH060-2-24EH060-2-220EH08A-2-12EH08A-2-24EH08A-2-220EH10A-2-12EH10A-2-24EH10A-2-220EH12A-2-12EH12A-2-24EH12A-2-220EH14A-2-12EH14A-2-24EH14A-4-220EH14B-2-12EH14B-2-24EH14B-4-220EH16B-2-12EH16B-2-24EH16B-4-220EH18B-2-24EH18B-4-220EH22B-2-24EH22B-4-220OR60LTOR100LTOR150LTOR250LTOR350LTOR600LTOR800LTThe codes listed are the manufacturer's own part numbers. For sizes not held in stock, ask for the lead time — supply is quick because we carry the series. Prices are given on quotation.
Frequently asked questions
Does my hydraulic system need a cooler?
It does if the oil temperature stays continuously above 60 °C. Measure at the tank, after the system has run at full load for a while. A system that settles around 50 °C does not need one. Even where temperature is acceptable, a cooler noticeably extends oil and seal life on short-cycle, high-duty machines.
How is cooler capacity selected?
Capacity is chosen from the flow that will pass through the cooler; items give it in l/min (80, 100, 120, 140, 160, 180, 220). For a return-line installation, allow for the peak instantaneous flow generated as a cylinder retracts. If capacity is too low the oil will not cool; there is no harm in oversizing beyond space and cost.
What is the difference between 12 V, 24 V and 220 V?
Only the fan motor supply differs; the cooling matrix is the same. The 12 V and 24 V models are fed from the vehicle's own electrical system on mobile hydraulics — tractors, construction machinery, truck-mounted equipment. The 220 V models connect to the mains in fixed industrial plant. Choosing the wrong voltage is the most common reason for a return.
Where is the cooler connected?
The standard position is the return line, with the oil passing through the cooler just before it enters the tank. Because the matrix housing is not designed for full system pressure it must not be connected directly into a pressure line. Fitting a parallel bypass check valve is sensible so that thick, cold oil does not strain the matrix on start-up.
There is a cooler fitted but the oil still overheats — why?
Look first at the air side of the matrix: once a mixture of dust and oil coats the surface, capacity drops quickly, and cleaning resolves most cases. There is also no cooling if the fan is not turning or is blowing the wrong way. If those are sound, there is simply too much heat being generated — usually oil returning continuously over the relief valve, or an oversized pump.
Get a quote for Hydraulic Oil Coolers
Send us the size and quantity you need and our sales team will get back to you the same day with pricing and lead time. If you're not sure of the size, a photo of the part you have is enough.