oil coolers
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PRODUCT FEATURES • Noise level reduction due to axial fan blades of the latest design • Streamlined fan housing for optimisation of the air flow • Air fins insensitive to contamination • Static test pressure 25 bar according to DIN 50104 • Peak pressure resistance at 16 bar and 1 x 106 load cycles, f = 1Hz • Operating pressure: 16 bar • Max. operating temperature: 120°C Powder-coated housing • Drive motor: 230 - 400V, 50Hz (DC version 12/24V on request) Operation with all common hydraulic fluids of different viscosities (oil, HFA, HFC, etc.) Cooling block also available in 2-way design or...

Specific cooling capacity Pspez [W/K] COOLING CAPACITY Flow rate Q [l/min] The specific cooling capacity indicated in the graph was determined on the test bench, test oil ISO VG 46, oil-inlet temperature 60°C. The actual cooling capacity may deviate by approx. ± 5 % depending on the installation site and other operating parameters.

Cooler type Cooler type

Cooler type

Cooler type Cooler type

Cooler type ACI - 31 - 400 - 4 - 0 - 0 - 0 - 0 Cooler series ACI = cooler for industrial application Versions 1 = 1-pass 2 = 2-pass Input voltage 400 = 400 Volt AC * possible with AG-7'/-8'/-9'/-'0' ** additional options on request Additional options** 0 = without 1 = internal bypass-valve Mounting options 0 = standard: feet mounted 1 = horizontally mounted with special bracket Air flow direction 0 = suction air flow 1 = blowing air flow Mounting position of cooler block 0 = standard 1 = turned 90° clockwise* 2 = turned 180° clockwise Engine revolution 2 = 2 pole / 3,000 min-' 4 = 4 pole /...

Flow rate Q [l/min] ACI-31/-41/-51 CONVERSION FACTORS VISCOSITY The correction factor has to be used for the calculation of the pressure drop for other viscosities: ∆pOil = ∆p46cSt x f ∆p46cSt as indicated in the graph.

CALCULATION OF COOLER SELECTION EXAMPLE 2: Cooling capacity unknown EXAMPLE 1: Cooling capacity known The heattransfer to the oil is approx. 30% of the motor power (diesel/electric motor) Cooling capacity Oil inlet temperature Ambient temperature Oil flow P = 65 kW TOil = 70°C TAir = 20°C QOil = 300 l/min P TOil - TAir Specific cooling capacity: SELECTION OF COOLER TYPE: ACI-61-400-4 PMotor = 45 kW P = 13.5 kW TOil = 50°C TAir = 20°C QOil = 200 l/min P TOil - TAir Specific cooling capacity: SELECTION OF COOLER TYPE: ACI-31-400-4 CALCULATION OF TEMPERATURE DIFFERENCE: ΔTOil Motor power...

INSTALLATION INSTRUCTIONS If possible, the heat exchanger should be integrated into the system with suitable hydraulic hoses. In the case of rigid piping, compensators are one way of eliminating introduction of forces via the piping. Pressure peaks in the system can lead to fatigue failure of the heat exchanger, even if they are below the permissible operating pressure. The frequency of the peaks is the influencing variable. 1 Cooler block 2 Fan housing 3 Axial fan 4 Protection grid 5 Electric engine 6 Mounting brackets ACI-71 TO ACI-101 2 1 Cooler block 2 Fan housing 3 Axial fan 4...

PARTIAL FLOW COOLER UNIT FOR INDUSTRIAL USE SERIES ACIP PRODUCT DESCRIPTION The new cooler system ACIP is optimised for a wide range of hydraulic applications. An integrated motor pump unit makes it possible to cool the oil efficiently and continuously in a separate circuit. The cooling process is working independently from the operation condition of the main hydraulic power unit. PRODUCT FEATURES • Oil-air cooler ACI with motor & pump in one unit • Drive motor 230/400 V, 50 Hz, 1450 min-1 • Gear pump, operating pressure: 4 bar • Bellhousing and coupling • Continuous cooling process •...

Cooler size TECHNICAL DATA Cooler size

SERIES ACM PRODUCT DESCRIPTION The new ACM oil-air cooler series is an optimised heat exchanger for a wide range of hydraulic applications. The 12/24V DC drive enables the use in mobile hydraulic power units, e.g. in agriculture/ forestry, in construction and mining machinery and in the loading and transport sector. PRODUCT FEATURES • Compact fans with 12/24V DC drive • Protection class IP68 • Operating pressure: max. 15 bar • Operating temperature: max. 120°C • Displacement: 10 - 300 l/min • Cooling capacity: 3 - 50kW (referring to AT=40K) ORDERING CODE ACM ACM - 12 Cooler series ACM =...

Oil flow m in-max 3 l/min] PRESSURE DROP COOLING CAPACITY Viscosity [cSt]

ACM-13-12/24 Oil flow min-max [l/min] PRESSURE DROP COOLING CAPACITY Viscosity [cSt]

Oil flow min-max [l/min] PRESSURE DROP COOLING CAPACITY Viscosity [cSt]

Oil flow min-max [l/min] PRESSURE DROP COOLING CAPACITY Viscosity [cSt]

Oil flow min-max [l/min] PRESSURE DROP

Oil flow min-max [l/min] COOLING CAPACITY PRESSURE DROP Viscosity [cSt]

ACM-19-12/24 Oil flow min-max [l/min] PRESSURE DROP COOLING CAPACITY Viscosity [cSt]

Oil flow min-max [l/min] PRESSURE DROP

DOC® BRAZED PLATE HEAT EXCHANGER PRODUCT FEATURES • High operating pressures • High operating temperatures • ompact connection blocks, brazed on C the plate heat exchanger • Cooling capacity of 5 to 360 kW • Suitable for most industrial hydraulic applications • Sturdy design due to brazed contact points between the plates • This allows best possible resistan ce against high operating pressures • 2 bar for DOC® 16, 30 and 60, 3 16 bar for DOC® 20 and 110 • razed design allows temperatures of B up to 225°C • turdy connection blocks allow high S fastening torques for assembling OPERATING...

HIGHEST COOLING CAPACITY AND LOW DEGREE OF CONTAMINATION • Low pressure drop over the connectors • Optimised plate design • Compact dimensions, low water consumption and low Delta T • Highly efficient heat transfer due to turbulent flow (high k value; P=k*A*Delta T) • Self cleaning effect inside the cooler due to equally distributed and highly turbulent flow TECHNICAL DATA

DOC® BRAZED PLATE HEAT EXCHANGER SELECTION DIAGRAM kW HP THE DIAGRAM • s based on an oil temperature of 60°C and water i temperature of 20°C. For an oil temperature of 50°C, multiply with the correction factor of 0.7. For other water temperatures, please see the correction factors on the right side. • is calculated for two different oil / water flow rates: 2:1 and 4:1. This means that for every litre of oil circulated through the oil cooler, a minimum of 0.5 litres (2:1) or 0.25 litres (4:1) of water must be circulated to agree with the data in the diagram. • s based on oil (ISO VG 32). For...