Cartridge Heaters Internal Wiring Type

Overview
The Cartridge Heaters is a durable and highly versatile product. It is widely used in heavy-industry applications such as plastics and packaging, emergency care medical equipment and analytical test instruments in aircrafts, train compartments and trucks, etc.
It can serve as a thermally conductive source for heating solid metal plates, modules and molds, and a convective heat source for various liquids and gases.

■ Difference between MISUMI Economy series and generic Cartridge Heaters products in the market

	Cartridge Heaters Products circulating on the market *	MISUMI economy series
Service life test equivalent to 4,000 H*
Result	Cannot be used due to short circuit or breakage	Can be used normally

* Test method complies with GB/T7287-2008
* Generic Cartridge Heaters products in the market are similar products randomly purchased by our company from online or offline markets
* The test data are obtained through testing by our company, which are for reference only

D Tolerance * The tolerance is the value of the heating part

D(mm)	Tolerance (mm)
8~12	-0.03 -0.06

Maximum operating temperature: 600℃
Lead wire heat-resistant temperature: 260℃

・Material table
Material
Body: SUS321
Lead wire: Nickel (Ni)
Lead wire coating: PTFE

Some examples of the Cartridge Heaters application mechanism

Move parts related to mechanism sliding support, temperature adjusting and heating with racks, gears and other workpieces.	Check 3 types of parts related to the sliding support, temperature adjusting and heating in the same position.	Belt tension device (with the spring)

 

Cartridge Heaters Parts related to the sliding support, nut, profile, temperature adjusting and heating	Slide up and down through clamping & welding parts of the cam bearing mechanism	No need to worry about handling of inductor wiring even for reversely rotating objects

For more examples of Cartridge Heaters product use, please refer to
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Cartridge Heaters Precautions for use
① Do not let the heater dry burn in the atmosphere. Otherwise, even if only heating part of the Cartridge Heaters is exposed outside the object heated, the wire may break and cause a fire due to abnormal heating.
② Do not let the lead wire and insulator of the heater come into contact with water. Otherwise, it may cause electric leakage or short circuit.
③ The oil and grease used for processing holes in the heated part should be removed. Otherwise, abnormal heat may be generated due to carbonization.
④ An abnormally short ON-OFF cycle may have an adverse effect on the service life of the heater. It is recommended to use a controller controlled by PID.
⑤ Do not bend the nickel stranded wire and the lead wire repeatedly or pull them. (Forced pulling may cause wire breakage.)
⑥ Do not use a power supply with the voltage exceeding the rated voltage (V).
⑦ When removing the heater from the object heated, make sure to turn off the power first. Do not touch the heater immediately after turning off the power.
⑧ The temperature around the lead wire outlet shall be kept below 130℃.
⑨ When the flanged heater is used, the temperature around the flange shall be kept below 180°C.
⑩ Do not use it in the vacuum.
⑪ When heating, the heater will expand and may cause the heat-generating part to protrude from the mounting hole. It is recommended to fix the heater with screws.
⑫ Choose a voltage that is suitable for the operating environment. If you use a voltage that exceeds the rated value, the heater may be damaged.
* Other precautions for each type of Cartridge Heaters are recorded on each product page. Please make sure to follow the above precautions and operate the heater properly.

Cartridge Heaters Selection
① Determine the required heater heat (W).
It can be calculated with the following formula according to the mass, specific heat, rising temperature, and the heating time required to reach the set temperature of the object heated.

The efficiency varies with the heat preservation, thermal insulation, and settings of the heater, so it is difficult to calculate it correctly. Generally, the value of about 0.2 to 0.5 is preferred.


② Determine the number of heaters and the heat of each heater (W).
The number of heaters is subject to the size of the object heated, and the total heat (W) is the heat required by the object heated.
Example) Use 2 heaters of 550 (W) (1,100 W in total).

● Selection of the cartridge heater (P.2789 MCHK type)

① Determine the diameter and length of the heater	② Determine the voltage (V) to be used	③ Determine the heat (W) required for the object heated

④ Determine whether the product satisfying the diameter (D), length (L), voltage (V), and heat (W) of the heater as required is available in the L Dimension・W (Power) Fixed Type (P.2789) and High Temperature Type (P.2790).
Note: For the power (W) of the L Dimension ・W (Power) Fixed Type, please select a Cartridge Heaters product with the power (W) larger than the required heat (W).


● Measurement data of the temperature rise time by power

Cartridge Heaters Related Products

Cartridge Heaters Usage Method