DKQ series CNC bearing heaterDetailed product description：

Bearings are important components widely used in mechanical transmission, but during assembly and repair processes, the "interference fit" caused by tolerance requirements poses great difficulties to operation. Usually, external pressure or flame heating, oil boiling heating, or the most primitive techniques such as hammering are applied to bearings. This method can easily cause the shaft to be pulled, the bearing to be damaged, the noise to increase, the service life to be reduced, and the energy consumption to be high. In addition, the labor intensity of workers is high. Therefore, our factory's newly developed DKQ-I~V fully functional electronic CNC bearing sleeve heater solves this problem, making it the first of its kind in the field of bearing applications in China. This machine utilizes the principle of high current in the short-circuit ring of the transformer and the eddy current thermal effect of the motor, introduces European and American technology and related electronic devices, and adopts high-precision temperature sensors and electronic numerical control displays. Accurately utilize the principle of metal thermal expansion to provide data for the fit between the bearing (sleeve) and the shaft by comparing the temperature and heating selection parameter table of the bearing (sleeve), and smoothly assemble it.

Technical Specifications:

model	Applicable range of bearings and shaft sleeves (inner diameter)	Applicable Voltage		Maximum heating temperature	Rated power Kw
DKQ-1	Ф 28-Ф60	220V		﹤ 300 ℃	three point five
DKQ-2	Ф 60-Ф90	220V		﹤ 300 ℃	four
DKQ-3	Ф 90-Ф120	220V	380V	﹤ 300 ℃	four point five
DKQ-4	Ф 120-Ф150	220V	380V	﹤ 300 ℃	five
DKQ-5	Ф 150-Ф200	220V	380V	﹤ 300 ℃	five point five

Special specifications can be designed and manufactured according to user requirements

3、 Main structure:

The host is composed of a power transformer, a moving iron core (matching), a temperature sensor, an electronic numerical control digital display, and other parts.

4、 Usage and operation:
1. According to the fitting requirements between the bearing sleeve and the shaft, the heating temperature can be found from the parameter selection table.
2. According to the inner diameter size of the bearing, select core columns with different diameters, and rotate the moving iron core on the heater panel. Insert the heating bearing onto the moving iron core core column, and then push the panel together with the moving iron core column to form a closed magnetic circuit for the transformer.
3. Turn the power switch of the heater to the corresponding gear, connect the power supply, and complete the heating process within 30 seconds to 3 minutes according to the size of the bearing, shaft sleeve inner diameter, and heating time.
4. Insert the temperature sensor core plug into the sensor socket of the heating machine base, then place the temperature sensing head of the sensor in the inner ring of the bearing or shaft sleeve, and press the bearing pressure on the temperature sensing head and the worktable to ensure good contact for accurate temperature measurement.
5. Turn on the temperature digital display controller and turn on the power switch. Heating starts, and the temperature digital display continuously displays the heating temperature of the bearing. When the temperature reaches the predetermined ideal temperature, the power can be cut off, the movable iron core can be pulled out, the bearing can be removed from the panel, and the shaft diameter to be assembled can be inserted. That's it.
5、 Attention:
1. The heater heats up quickly. After connecting the power supply, closely monitor the temperature display. Once the temperature reaches the predetermined value, immediately turn off the power to prevent excessive temperature from damaging the bearing metallographic structure.
2. Be sure to pay attention to safety when removing heated bearings to prevent burns.
3. After use, push the temperature digital display into the machine to avoid damage and cut off all power.

DKQ series CNC bearing heater