COB Series High temperature circulating oil bath



Product description

High-temperature circulating oil baths are widely used in petroleum, chemical, electronic instrumentation, physics, chemistry, biological engineering, medicine and health, life sciences, light industry food, physical testing and chemical analysis research departments, universities, and enterprises for quality inspection and production The department provides users with a controlled heat and cold field source with uniform and constant temperature when working, and conducts constant temperature tests or tests on test samples or produced products. It can also be used as a heat source for direct heating and auxiliary heating.




  • This product adopts imported stainless steel plate material as the inner tank, and the outer shell is made of high-quality pi plate electrostatic spray. The electric heating tube is in the middle of the oil, which has fast heating, high heat efficiency, low power consumption and electronic constant temperature.
  • We have also improved the temperature control system of the product, adding a temperature control device for both digital display and display. The oil bath shell and inner tank are protected by temperature insulation cotton, which has good heat preservation effect and can be used for various high temperature bath pots of the same model.
  • The circulating pump adopts all stainless steel high temperature magnetic pump, which has the advantages of stable performance, reliable quality and no leakage.
  • Digital display temperature control, simple and eye-catching operation.
  • The digital display adopts PID control, which has the advantages of precise temperature control and small temperature shock.
  • The circulation system is made of stainless steel and copper, which has the advantages of anti-rust and corrosion.
  • Adopt solid state relay control circuit, no contact, no open flame, increase life.
  • It can also be made into explosion-proof according to customer requirements.



product structure

It is made of 304 stainless steel in one piece, and insulation materials are added between the inner tank and the outer shell to keep high temperature to the maximum and improve efficiency. This product uses a built-in circulating pump, the highest temperature can reach 300 degrees, and never leak oil. The PT100 sensor measures the temperature accurately and the liquid crystal displays the temperature. Beautiful appearance, large-capacity inner tank, saving space.



Main Configuration

  • The pot is made of 304 stainless steel, and the outer shell is cold-sprayed.
  • The heating tube is of upper and lower coil type, the heating temperature is more uniform, and the temperature difference is smaller.
  • The circulating pump is built-in, and the pump head is inside the bladder without oil leakage.
  • The tilt button (ON-OFF) switch controls the heating and circulation functions respectively.
  • Constant temperature bath temperature digital display, PT100 sensor + stainless steel probe.
  • The upper part of the pot shell is equipped with a liquid inlet to observe the liquid level.
  • Fuse safety protection.
  • Equipped with silicone tube.
  • This product is dual-purpose for water and oil. When the operating temperature is higher than 99 degrees, it needs to be equipped with open high temperature methyl silicone oil. The lower the viscosity, the better the circulation effect.




Model COB-5 COB-20 COB-50 COB-100
Voltage frequency 220V/50HZ 220V/50HZ 220V/50HZ 380V/50HZ
Total power 2060W 3180W 5100W 8250W
Oil pump motor power 60W 180W 200W 250W
heating power 2000W 3000W 5000W 8000W
flow 8L/MIN 8L/MIN 8L/MIN 12L/MIN
Lift 4M 4M 4M 7M
Temp. range RT -250°C RT -250°C RT -250°C RT -250°C
Temp. accuracy ±1°C ±1°C ±1°C ±1°C
Circulation nozzle Φ12mm connector

8×12mm silicone tube 3 meters

4’× 2 meters

inner wire mouth

4’× 2 meters

inner wire mouth

6’×2 meters

inner wire mouth

Bath size (mm) capacity Φ250mm×250H

about 12L


about 27L


about 47L


about 65L

Amount of oil Not less than 9L 17L 30L About 45L
Filling port 65×55mm 140×100mm 140×100mm 140×100mm
Dimensions (mm) (W*D*H) 310×350×430m 405×530×600 510×540×600 500×580×660
Net weight 13.5KG 29KG 32.5KG 39KG
Package dimensions 380×380×480

carton 0.07m³


carton 0.17m³


carton 0.21m³


carton 0.26m³

Package weight 15.5KG 32KG 36KG 43KG