Working Principle and Eight Features of Bearing Heater

Working Principle of Bearing Heater
  1. Short-circuit heating: The main unit is a transformer with a special structure. The movable iron core can be directly used for heating worn bearings or other workpieces. When in operation, connect the power supply of the bearing heater’s main unit, and a short-circuit current will be induced in the workpiece (equivalent to the auxiliary winding) to heat it up.
  2. Place the iron core on the moving end face of the main iron core.
  3. Check the matching of the plug and socket and the reliability of earthing, then insert the plug into the power socket with a control switch.
  4. Turn the function knob to the manual control position and then turn on the power supply. At this time, the red indicator light is on.
  5. Press the start button to activate the main unit. At this time, the green light goes out and the red light remains on; press the stop button, and the red light goes out. The commissioning is now completed and the device is ready for use.
Operating Procedures
  1. Select the corresponding iron core according to the inner diameter of the bearing, and place the iron cores for the upper bearing on the two moving ends of the main iron core.
  2. During the heating process, measure the temperature of the inner end of the bearing inner ring. When the temperature rise reaches the required value, stop heating as scheduled, take out the iron core, and remove the bearing for assembly.
  3. For continuous heating of bearings of the same specification, turn the function knob to the time control position and set the heating time; the power will be cut off automatically when the bearing is heated for the set time.
  4. After the operation is completed, turn the knob to the stop position and cut off the power supply.
Eight Features of Bearing Heater
  1. Fast heating speed, with temperature display to control the heating process.
  2. The new eddy current induction design adopts the internationally advanced “fuzzy control” and “neural network” technologies.
  3. Capable of continuous operation, with high output power and high efficiency.
  4. Safe and reliable heating process.
  5. Suitable for heating sealed bearings (ZZ, 2RS).
  6. Equipped with a rotary (hydraulic) rocker arm or hinged heating rod design for easier operation.
  7. The heating time can be displayed during the heating process.
  8. No open flame, no pollution, environmental friendly, and free from potential safety hazards.
Application Scope of Bearing Heater

This bearing heater is suitable for mechanical manufacturing and maintenance in power plants, textile mills, paper mills, chemical industry, petroleum industry, machinery industry, mining machinery and other fields, as well as maintenance in the wind power industry. By heating workpieces at one time and conducting automatic annealing, the cylindrical deformation of workpieces can be achieved to meet the requirements of over-limit equipment. The heater is controlled by a microcomputer, which can automatically detect equipment faults, adjust the heater power automatically, and realize soft start/stop.

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