ACOS series — immersion oil chiller

An immersion oil chiller is an industrial cooling device that works by placing the evaporator (cooling coil) directly within an oil tank or coolant reservoir. Unlike traditional oil coolers, it typically does not have a circulation pump. Instead, it relies on the existing fluid flow within the tank or an optional agitator to maintain a uniform liquid temperature, making it ideal for cooling coolants, hydraulic fluids, lubricants, and high-viscosity industrial fluids.

TOBEL immersion oil chiller provides direct, in-tank temperature control for cutting fluids, hydraulic oil, and lubricating oil across a wide range of machine tools, including machining centers, grinders, broaching machines, grinding machines, WEDM, EDM machine tools, cooling systems, hydraulic systems, and lubrication systems. The corrosion-resistant stainless steel evaporator coil submerges directly into the fluid, rapidly extracting heat without dilution or contamination, ensuring temperature stability to prevent thermal expansion and maintain machining accuracy.

product details

Scope of application

Processing centers, modular machine tools, grinders, broaches, grinding machines
Wire cutting machine tools, electric machining machine tools
CNC gear hobbing , shaping and honing machines
Hydraulic pump stations

Feature

Evaporating coils are made from stainless steel or copper with coating surface, which are suitable for various fluids.
The design of open coil type heat exchanger eliminates the obstruction problem of liquid circulating system.
Immersion cooling prevents the spreading of undesirable gas and reduces the air pollution.
Made of anti-corrosive material
Directly installing on liquid tanks can avoid the impact from impurities , oil sludge , metal filings,contributing to the maintenance work

Matters needing attention

Immersion depth as close to tank depth as possible
Refluxing high temperature liquids pass through the cooling coil first to exchange heat
Considering the change of liquid level before and after the operation of the equipment
Ensure smooth air inlet and outlet

Specification

Model		ACOS50	ACOS70	ACOS90	ACOS120	ACOS150	ACOS180	ACOS250	ACOS300	ACOS350	ACOS500
Cooling Capacity[W]		5000	7000	9000	12000	15000	18000	25000	30000	35000	50000
Power Supply		3PH / 380V / 50Hz [ Customizable ]
Input Power[W]		2400	3000	3050	4900	5600	7000	8700	11000	14000	17500
Liquid Temperature		15~45℃
Ambient Temperature		5~42℃
Refrigerant		R407c / R410a / R134a/ R513a
Applicable liquid		Water, water-soluble cutting fluid, water soluble grinding fluid;cutting oil, grinding oil
Dimensions	Width[mm]	600	680	760	760	760	830	980	980	980	1080
	Length[mm]	560	670	750	750	750	750	1250	1250	1500	1755
	Height[mm]	1085	1205	1225	1325	1475	1720	1835	1835	1835	1800
NOTE Cooling capacity rated at oil 35°C / ambient 35°C. Performance degrades with higher ambient temperature or lower oil temperature. Specifications subject to change without notice for product improvement.

Size [Take the ACOS250 size as an example]