Hydraulic Oil
Coolers

Product Profile

Efficient Heat Dissipation
Designed to remove excess heat generated in hydraulic systems with high ambient temperatures

The Thermex range of shell and tube hydraulic coolers are essential for efficient dissipation of excess heat to ensure the optimum performance of any hydraulically driven industrial and process equipment.

Our modular approach to component parts allow flexible versatility and cost-effective solutions to heat exchanger design We utilise industry proven designs and technology which combine high performance with durability and reliability.

Our standard range of hydraulic oil coolers is shown below:

Features & benefits

2300/2500 Series - extruded aluminum bodies

2700/2800 Series – cast aluminium bodies

Cast iron headers for use with freshwater cooling medium

3 pass cooling configurations as standard

90/10 Cupronickel tube stacks

Floating tube stack eliminate thermal expansion damage and allows easy access for removal

Industry standard BSPT (British Standard Pipe Taper) threaded port sizes

Leak detection rings (2700/2800: standard, 2300/2500: optional)

Viton seals allow operating temperatures up to 120°C

Duty Range: 3kW to 750kW (subject to flow rates and temperatures)

Maximum Working Pressure: Oil Side @ 20-30 Bar

Maximum Working Pressure: Water Side @ 10 Bar

Options available

Other headers materials available include gun metal and glass-filled nylon composite

1 and 2 pass cooling configurations on request

Tube stack material options include 70/30 cupronickel, 304 stainless steel and titanium

can't find what you're looking for?

If you can’t find anything suitable from our standard range, please fill in and return our Technical Enquiry Data Sheet, and our engineers can design the perfect oil cooler for your application from operational data provided such as inlet temperatures and flow rates.

Technical enquiry data sheet

Specifications

technical information

2300 Series Overview

Models

Part Number	Series Number	A (mm)	B (mm)	C (mm)	D (BSP)	E (BSP)	F (mm)	G (mm)	H (mm)	Weight (Kg)	Oil Volume (Litres)	Water Volume (Litres)
820321	2312	175	59	*	1/2"	1/2"	92	103	50	3	0.3	0.4
820321H	2312H	175	59	*	1/2"	3/4"	92	103	50	3	0.3	0.4
820322	2322	259	135	117	3/4"	1/2"	92	103	50	4	0.5	0.5
820322H	2322H	259	135	117	3/4"	3/4"	92	103	50	4	0.5	0.5
820323	2332	345	221	203	3/4"	1/2"	92	103	50	5	0.7	0.6
820323H	2332H	345	221	203	3/4"	3/4"	92	103	50	5	0.7	0.6
820324	2342	443	319	301	3/4"	1/2"	92	103	50	5	1.0	0.7
820324H	2342H	443	319	301	3/4"	3/4"	92	103	50	5	1.0	0.7
820325	2352	571	447	429	3/4"	1/2"	92	103	50	6	1.3	0.9
820325H	2352H	571	447	429	3/4"	3/4"	92	103	50	6	1.3	0.9
820326	2362	717	587	575	1"	1/2"	92	103	50	7	1.7	1.1
820326H	2362H	717	587	575	1"	3/4"	92	103	50	7	1.7	1.1
820327	2372	895	765	753	1"	1/2"	92	103	50	8	2.2	1.4
820327H	2372H	895	765	753	1"	3/4"	92	103	50	8	2.2	1.4

Dimensions

Specifications

Part Number	Series Number	Body Material	Body Port (BSPT)	Header Material	Tube Pass (Cold Side)	Header Port (BSPT)	O Ring Material	Tube Stack Part Number	Tube Stack Material	Tube Stack Length	Tube Plate Ø	Tube Plate Material	Baffle Material
820321	2312	ALUMINIUM	1/2"	CAST IRON	3	1/2"	VITON	720051	90/10	106	76	NAVAL BRASS	ALUMINIUM
820321H	2312H	ALUMINIUM	1/2"	CAST IRON	3	3/4"	VITON	720051	90/10	106	76	NAVAL BRASS	ALUMINIUM
820322	2322	ALUMINIUM	3/4"	CAST IRON	3	1/2"	VITON	720052	90/10	190	76	NAVAL BRASS	ALUMINIUM
820322H	2322H	ALUMINIUM	3/4"	CAST IRON	3	3/4"	VITON	720052	90/10	190	76	NAVAL BRASS	ALUMINIUM
820323	2332	ALUMINIUM	3/4"	CAST IRON	3	1/2"	VITON	720053	90/10	276	76	NAVAL BRASS	ALUMINIUM
820323H	2332H	ALUMINIUM	3/4"	CAST IRON	3	3/4"	VITON	720053	90/10	276	76	NAVAL BRASS	ALUMINIUM
820324	2342	ALUMINIUM	3/4"	CAST IRON	3	1/2"	VITON	720054	90/10	374	76	NAVAL BRASS	ALUMINIUM
820324H	2342H	ALUMINIUM	3/4"	CAST IRON	3	3/4"	VITON	720054	90/10	374	76	NAVAL BRASS	ALUMINIUM
820325	2352	ALUMINIUM	3/4"	CAST IRON	3	1/2"	VITON	720055	90/10	502	76	NAVAL BRASS	ALUMINIUM
820325H	2352H	ALUMINIUM	3/4"	CAST IRON	3	3/4"	VITON	720055	90/10	502	76	NAVAL BRASS	ALUMINIUM
820326	2362	ALUMINIUM	1"	CAST IRON	3	1/2"	VITON	720056	90/10	648	76	NAVAL BRASS	ALUMINIUM
820326H	2362H	ALUMINIUM	1"	CAST IRON	3	3/4"	VITON	720056	90/10	648	76	NAVAL BRASS	ALUMINIUM
820327	2372	ALUMINIUM	1"	CAST IRON	3	1/2"	VITON	720057	90/10	826	76	NAVAL BRASS	ALUMINIUM
820327H	2372H	ALUMINIUM	1"	CAST IRON	3	3/4"	VITON	720057	90/10	826	76	NAVAL BRASS	ALUMINIUM

Performance

Where sea water is the cooling medium, the water flow rate should be controlled to fall within the limits shown in the following table. Prolonged use with polluted harbour or estuary water outside these flow limits may result in tube failure.

Part Number	Series Number	Heat Dissipation kW	Oil Flow Rate litre/minute	Oil Pressure Drop		Water Flow litre/minute	Head Loss		Water Flow
Part Number	Series Number	Heat Dissipation kW	Oil Flow Rate litre/minute	kPa	Bar	Water Flow litre/minute	kPa	Bar	Min: litres/minute	Max: litres/minute
820321	2312	3.6	40	40	0.4	8.0	1	0.01	20	45
820321H	2312H	3.6	40	40	0.4	8.0	1	0.01	20	45
820322	2322	6.0	50	60	0.6	8.0	1	0.01	20	45
820322H	2322H	6.0	50	60	0.6	8.0	1	0.01	20	45
820323	2332	10	65	50	0.5	13.0	3	0.03	20	45
820323H	2332H	10	65	50	0.5	13.0	3	0.03	20	45
820324	2342	15	80	80	0.8	16.0	5	0.05	20	45
820324H	2342H	15	80	80	0.8	16.0	5	0.05	20	45
820325	2352	19	90	60	0.6	19.0	8	0.08	20	45
820325H	2352H	19	90	60	0.6	19.0	8	0.08	20	45
820326	2362	24	100	90	0.9	21.0	13	0.13	20	45
820326H	2362H	24	100	90	0.9	21.0	13	0.13	20	45
820327	2372	31	120	120	1.2	24.0	15	0.15	20	45
820327H	2372H	31	120	120	1.2	24.0	15	0.15	20	45

Performance Curves

Installation

The illustration shows the correct position of the oil and water connections for horizontal and vertical mounting to ensure coolers operate full of water. The cooler is usually mounted in the system return line or drain line to tank and the water should be connected in counter flow to the oil flow. Long lengths of unsupported pipe or excessive pipe vibration should be avoided and where there are extreme fluctuations in flow or pressure it may be advisable to mount the cooler ‘off-line’ with its own recirculating pump. A check valve to by-pass oil across the cooler under cold starting conditions is recommended especially for oil with a high viscosity.

2500 Series Overview

Models

Part Number	Series Number	A (mm)	B (mm)	C (mm)	D (BSP)	E (BSP)	F (mm)	G (mm)	H (mm)	Weight (Kg)	Oil Volume (Litres)	Water Volume (Litres)
820521	2512	291	129	75	1"	1"	147	161	76	10	1.4	1.4
820521H	2512H	291	129	75	1"	1 1/2"	147	161	76	10	1.4	1.4
820522	2522	377	199	161	1 1/4"	1"	147	161	76	12	1.9	1.7
820522H	2522H	377	199	161	1 1/4"	1 1/2"	147	161	76	12	1.9	1.7
820523	2532	475	297	259	1 1/4"	1"	147	161	76	13	2.5	2.1
820523H	2532H	475	297	259	1 1/4"	1 1/2"	147	161	76	13	2.5	2.1
820524	2542	603	425	387	1 1/4"	1"	147	161	76	14	3.5	2.6
820524H	2542H	603	425	387	1 1/4"	1 1/2"	147	161	76	14	3.5	2.6
820525	2552	749	571	533	1 1/2"	1"	147	161	76	17	4.5	3.2
820525H	2552H	749	571	533	1 1/2"	1 1/2"	147	161	76	17	4.5	3.2
820526	2562	927	749	711	1 1/2"	1"	147	161	76	20	5.8	3.9
820526H	2562H	927	749	711	1 1/2"	1 1/2"	147	161	76	20	5.8	3.9
820527	2572	1129	951	913	1 1/2"	1"	147	161	76	23	7.3	4.8
820527H	2572H	1129	951	913	1 1/2"	1 1/2"	147	161	76	23	7.3	4.8
820528	2582	1381	1203	1165	1 1/2"	1"	147	161	76	27	9.0	5.8
820528H	2582H	1381	1203	1165	1 1/2"	1 1/2"	147	161	76	27	9.0	5.8
820529	2592	1727	1549	1511	1 1/2"	1"	147	161	76	32	11.5	7.2
820529H	2592H	1727	1549	1511	1 1/2"	1 1/2"	147	161	76	32	11.5	7.2

Dimensions

Specifications

Part Number	Series Number	Body Material	Body Port (BSPT)	Header Material	Tube Pass (Cold Side)	Header Port (BSPT)	O Ring Material	Tube Stack Part Number	Tube Stack Material	Tube Stack Length	Tube Plate Ø	Tube Plate Material	Baffle Material
820521	2512	ALUMINIUM	1"	CAST IRON	3	1"	VITON	720151	90/10	190	125	NAVAL BRASS	ALUMINIUM
820521H	2512H	ALUMINIUM	1"	CAST IRON	3	1 1/2"	VITON	720151	90/10	190	125	NAVAL BRASS	ALUMINIUM
820522	2522	ALUMINIUM	1 1/4"	CAST IRON	3	1"	VITON	720152	90/10	276	125	NAVAL BRASS	ALUMINIUM
820522H	2522H	ALUMINIUM	1 1/4"	CAST IRON	3	1 1/2"	VITON	720152	90/10	276	125	NAVAL BRASS	ALUMINIUM
820523	2532	ALUMINIUM	1 1/4"	CAST IRON	3	1"	VITON	720153	90/10	374	125	NAVAL BRASS	ALUMINIUM
820523H	2532H	ALUMINIUM	1 1/4"	CAST IRON	3	1 1/2"	VITON	720153	90/10	374	125	NAVAL BRASS	ALUMINIUM
820524	2542	ALUMINIUM	1 1/4"	CAST IRON	3	1"	VITON	720154	90/10	502	125	NAVAL BRASS	ALUMINIUM
820524H	2542H	ALUMINIUM	1 1/4"	CAST IRON	3	1 1/2"	VITON	720154	90/10	502	125	NAVAL BRASS	ALUMINIUM
820525	2552	ALUMINIUM	1 1/2"	CAST IRON	3	1"	VITON	720155	90/10	648	125	NAVAL BRASS	ALUMINIUM
820525H	2552H	ALUMINIUM	1 1/2"	CAST IRON	3	1 1/2"	VITON	720155	90/10	648	125	NAVAL BRASS	ALUMINIUM
820526	2562	ALUMINIUM	1 1/2"	CAST IRON	3	1"	VITON	720156	90/10	826	125	NAVAL BRASS	ALUMINIUM
820526H	2562H	ALUMINIUM	1 1/2"	CAST IRON	3	1 1/2"	VITON	720156	90/10	826	125	NAVAL BRASS	ALUMINIUM
820527	2572	ALUMINIUM	1 1/2"	CAST IRON	3	1"	VITON	720157	90/10	1028	125	NAVAL BRASS	ALUMINIUM
820527H	2572H	ALUMINIUM	1 1/2"	CAST IRON	3	1 1/2"	VITON	720157	90/10	1028	125	NAVAL BRASS	ALUMINIUM
820528	2582	ALUMINIUM	1 1/2"	CAST IRON	3	1"	VITON	720158	90/10	1280	125	NAVAL BRASS	ALUMINIUM
820528H	2582H	ALUMINIUM	1 1/2"	CAST IRON	3	1 1/2"	VITON	720158	90/10	1280	125	NAVAL BRASS	ALUMINIUM
820529	2592	ALUMINIUM	1 1/2"	CAST IRON	3	1"	VITON	720159	90/10	1629	125	NAVAL BRASS	ALUMINIUM
820529H	2592H	ALUMINIUM	1 1/2"	CAST IRON	3	1 1/2"	VITON	720159	90/10	1629	125	NAVAL BRASS	ALUMINIUM

Performance

Part Number	Series Number	Heat Dissipation kW	Oil Flow Rate litre/minute	Oil Pressure Drop		Water Flow litre/minute	Head Loss		Water Flow
Part Number	Series Number	Heat Dissipation kW	Oil Flow Rate litre/minute	kPa	Bar	Water Flow litre/minute	kPa	Bar	Min: litres/minute	Max: litres/minute
820521	2512	17	120	60	0.6	30	1	0.01	50	120
820521H	2512H	17	120	60	0.6	30	1	0.01	50	120
820522	2522	25	140	70	0.7	40	2	0.02	50	120
820522H	2522H	25	140	70	0.7	40	2	0.02	50	120
820523	2532	32	160	60	0.6	45	4	0.04	50	120
820523H	2532H	32	160	60	0.6	45	4	0.04	50	120
820524	2542	42	180	90	0.9	50	6	0.06	50	120
820524H	2542H	42	180	90	0.9	50	6	0.06	50	120
820525	2552	51	200	80	0.8	60	10	0.1	50	120
820525H	2552H	51	200	80	0.8	60	10	0.1	50	120
820526	2562	68	220	100	1.0	70	17	0.17	50	120
820526H	2562H	68	220	100	1.0	70	17	0.17	50	120
820527	2572	85	250	80	0.8	87	30	0.3	50	120
820527H	2572H	85	250	80	0.8	87	30	0.3	50	120
820528	2582	110	280	110	1.1	120	65	0.65	50	120
820528H	2582H	110	280	110	1.1	120	65	0.65	50	120
820529	2592	135	300	170	1.7	120	75	0.75	50	120
820529H	2592H	135	300	170	1.7	120	75	0.75	50	120

Performance Curves

Installation

2700 Series Overview

Model

Part Number	Series Number	A (mm)	B (mm)	C (mm)	D (BSP)	E (BSP)	F (mm)	G (mm)	H (mm)	Weight (Kg)	Oil Volume (Litres)	Water Volume (Litres)
810721	2712	650	326	306	2"	2"	216	230	125	38	5.5	5.0
810722	2722	796	472	452	2"	2"	216	230	125	43	7.0	6.0
810723	2732	974	650	630	2"	2"	216	230	125	48	9.0	7.5
810724	2742	1176	850	832	2"	2"	216	230	125	55	11.0	9.0
810725	2752	1428	1104	1084	2"	2"	216	230	125	63	14.0	10.5
810726	2762	1777	1453	1433	2"	2"	216	230	125	74	17.5	13.0

Dimensions

Specifications

Part Number	Series Number	Body Material	Body Port (BSPT)	Header Material	Tube Pass (Cold Side)	Header Port (BSPT)	O Ring Material	Tube Stack Part Number	Tube Stack Material	Tube Stack Length	Tube Plate Ø	Tube Plate Material	Baffle Material
810721	2712	ALUMINIUM	2"	CAST IRON	3	2"	VITON	720501	90/10	502	160	NAVAL BRASS	ALUMINIUM
810722	2722	ALUMINIUM	2"	CAST IRON	3	2"	VITON	720502	90/10	648	160	NAVAL BRASS	ALUMINIUM
810723	2732	ALUMINIUM	2"	CAST IRON	3	2"	VITON	720503	90/10	826	160	NAVAL BRASS	ALUMINIUM
810724	2742	ALUMINIUM	2"	CAST IRON	3	2"	VITON	720504	90/10	1028	160	NAVAL BRASS	ALUMINIUM
810725	2752	ALUMINIUM	2"	CAST IRON	3	2"	VITON	720505	90/10	1280	160	NAVAL BRASS	ALUMINIUM
810726	2762	ALUMINIUM	2"	CAST IRON	3	2"	VITON	720506	90/10	1629	160	NAVAL BRASS	ALUMINIUM

Performance

Part Number	Series Number	Heat Dissipation kW	Oil Flow Rate litre/minute	Oil Pressure Drop		Water Flow litre/minute	Head Loss		Water Flow
Part Number	Series Number	Heat Dissipation kW	Oil Flow Rate litre/minute	kPa	Bar	Water Flow litre/minute	kPa	Bar	Min: litres/minute	Max: litres/minute
810721	2712	92	340	50	0.5	170	18	0.18	100	210
810722	2722	124	360	100	1.0	180	23	0.23	100	210
810723	2732	140	380	80	0.8	190	29	0.29	100	210
810724	2742	175	400	120	1.2	200	37	0.37	100	210
810725	2752	208	420	160	1.6	210	46	0.46	100	210
810726	2762	241	440	180	1.8	220	59	0.59	100	210

Performance Curves

Installation

2800 Series Overview

Model

Part Number	Series Number	A (mm)	B (mm)	C (mm)	D (BSP)	E (BSP)	F (mm)	G (mm)	H (mm)	Weight (Kg)	Oil Volume (Litres)	Water Volume (Litres)
810821	2812	684	326	306	3"	2 1/2"	262	275	150	48	9.0	7.5
810822	2822	830	472	452	3"	2 1/2"	262	275	150	54	11.5	9.0
810823	2832	1008	650	630	3"	2 1/2"	262	275	150	62	15.0	10.5
810824	2842	1210	852	832	3"	2 1/2"	262	275	150	71	18.5	13.0
810825	2852	1462	1104	1084	3"	2 1/2"	262	275	150	82	23.0	15.5
810826	2862	1811	1453	1433	3"	2 1/2"	262	275	150	97	29.5	19.0

Dimensions

Specifications

Part Number	Series Number	Body Material	Body Port (BSPT)	Header Material	Tube Pass (Cold Side)	Header Port (BSPT)	O Ring Material	Tube Stack Part Number	Tube Stack Material	Tube Stack Length	Tube Plate Ø	Tube Plate Material	Baffle Material
810821	2812	ALUMINIUM	3" BSP	CAST IRON	3	2 1/2"	VITON	720801	90/10	502	200	NAVAL BRASS	ALUMINIUM
810822	2822	ALUMINIUM	3" BSP	CAST IRON	3	2 1/2"	VITON	720802	90/10	648	200	NAVAL BRASS	ALUMINIUM
810823	2832	ALUMINIUM	3" BSP	CAST IRON	3	2 1/2"	VITON	720803	90/10	826	200	NAVAL BRASS	ALUMINIUM
810824	2842	ALUMINIUM	3" BSP	CAST IRON	3	2 1/2"	VITON	720804	90/10	1028	200	NAVAL BRASS	ALUMINIUM
810825	2852	ALUMINIUM	3" BSP	CAST IRON	3	2 1/2"	VITON	720805	90/10	1280	200	NAVAL BRASS	ALUMINIUM
810826	2862	ALUMINIUM	3" BSP	CAST IRON	3	2 1/2"	VITON	720806	90/10	1629	200	NAVAL BRASS	ALUMINIUM

Performance

The following table give typical examples of cooler performance at specified oil and water flows using Viscosity Grade 37 oil at an inlet temperature of 60°C with a water supply temperature of 20°C. This is for general cooler selection only; performance curves are also provided for more accurate selection. If you require help with cooler selection please contact the Thermex Sales Team.Where sea water is the cooling medium, the water flow rate should be controlled to fall within the limits shown in the following table. Prolonged use with polluted harbour or estuary water outside these flow limits may result in tube failure.

Part Number	Series Number	Heat Dissipation kW	Oil Flow Rate litre/minute	Oil Pressure Drop		Water Flow litre/minute	Head Loss		Water Flow
Part Number	Series Number	Heat Dissipation kW	Oil Flow Rate litre/minute	kPa	Bar	Water Flow litre/minute	kPa	Bar	Min: litres/minute	Max: litres/minute
810821	2812	124	460	40	0.4	230	16	0.16	140	300
810822	2822	168	490	70	0.7	245	20	0.2	140	300
810823	2832	193	520	60	0.6	260	26	0.26	140	300
810824	2842	240	550	80	0.8	275	33	0.33	140	300
810825	2852	288	580	100	1.0	290	42	0.42	140	300
810826	2862	339	610	110	1.1	305	54	0.54	140	300

Performance Curves

Installation

Industry Sectors

Driving Global Performance
Committed to safety & quality in a diverse range of industrial applications

Drawing from extensive industry experience in heating and cooling technology, Thermex's high performance Hydraulic Oil Coolers provide cost effective, energy efficient solutions in the following applications:

Industrial Hydraulics

Marine

Off-Highway & Construction

Power Generation

Swimming Pool & Spa

SHell & Tube Heat Exchangers
Product Range

Finned Tube Heat Exchangers

With over 45 years of innovative design and manufacturing expertise, Thermex has developed a range of high-performance finned tube heat exchangers. Our finned tube heat exchangers are designed to significantly increase the tube stack surface area available for thermal transfer by up to 400% when compared to units of a similar size. This results in a compact and highly efficient heat transfer solution.

Swimming Pool Heat Exchangers

Thermex swimming pool heat exchangers are based directly on our established range of marine oil coolers.

Charge Air Coolers

Used on turbocharged or supercharged (forced induction) internal combustion engines (ICEs) to improve volumetric efficiency, charge air coolers (CAC) increase intake air-charge density through isochoric cooling.

Marine Oil Coolers

Combining efficiency and reliability, the Thermex range of shell and tube marine oil coolers ensures optimised thermal transfer of excess heat generated by on-board fluid power systems typically used in steering systems, deck equipment and water-cooling solutions required for marinised engines.

Hydraulic Oil Coolers

Finned Tube Heat Exchangers

Swimming Pool Heat Exchangers

Charge Air Coolers

Marine Oil Coolers

Hydraulic Oil Coolers

Header Tank Heat Exchangers

Hydraulic Oil
Coolers