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Cartridge Heaters, High-temperature Dry-burn Resistant (Part Numbers)

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Product Overview

Overview
The cartridge heater is a robust, highly durable, and extremely powerful product with a wide range of applications—from light industrial uses such as plastics and packaging to emergency medical equipment and analytical instruments in airplanes, train cars, and trucks.
It can serve as a conductive heat source for heating solid metal plates, modules, and molds, as well as a convective heat source for various liquids and gases.

Dimensional Drawing

Material	Main housing material:	310S heat-resistant stainless steel (304 stainless steel for diameters below 6)
	Conductor material:	Pure nickel wire
	Conductor insulation:	Mica fiber braiding
	Conductor heat resistance temperature:	300°C

✳ Uses an internal wiring structure, making it more suitable for applications involving movement or vibration

L	Tolerance
Below 100	±0.5
Above 100	±1% of L dimension

Specification Overview

Heater Selection
(1) Determine the required heater output (W).
You can calculate this using the following formula, based on the mass, specific heat, temperature rise of the object to be heated, and the heating time required to reach the set temperature.
Usage Method 1

Efficiency varies depending on insulation, heat retention, and heater installation conditions, making it difficult to calculate accurately, but generally a value of about 0.2 to 0.5 is recommended.
Usage Method 2

(2) Determine the number of heaters and the heat output (W) of each heater.
Decide the number of heaters based on the size of the object to be heated. The total heat output (W) is the amount of heat required by the object.
Example: Using two 550(W) heaters (total 1100W).
● Selection of cartridge heaters (P.2789 MCHK type)
(1) Determine the diameter and length of the heater (2) Determine the voltage (V) to be used (3) Determine the required heat output (W) for the object to be heated
Usage Method 3

(4) Confirm whether the product that meets the required heater diameter (D), length (L), voltage (V), and heat output (W) is available in the fixed L size/W (power) type (P.2789) or high-temperature type (P.2790).
Note: For the fixed L size/W (power) type, please select a product with a power (W) that is slightly higher than the required heat output (W).
Usage Method 4

● Measured heating time data by power classification
Usage Method 5

Alterations

Alterations	Code	Shape
Flange Shape A	A

Specification Table

Type (Metric)		L	V (Voltage)	W (Power)
Type	D	L	V (Voltage)	W (Power)
E-MHK	3	30	24/220	30	40
		40	24/220	40	50
		50	24/220	50	60
		60	24/220	50	60	80
		80	24/220	80	90	100
		100	24/220	80	100
	4	30	24/220	30	40
		40	24/220	40	50
		50	24/220	50	60
		60	24/220	60	80	90
		80	24/220	80	90	100
		100	24/220	100	120
	5	30	24/220	50	60
		40	24/220	60	80
		50	24/220	50	80	100
		60	24/220	100	120
		80	24/220	120	150
		100	24/220	150	180
	6	30	220	50	120	200
		40	220	50	120	250
		50	220	50	200	300
		60	220	50	200	300
		80	220	50	200	300
		90	220	50	200	300
		100	220	50	200	400
		120	220	200	300	500
		150	220	200	400	600
	8	30	220	50	120	200
		40	220	80	150	250
		50	220	100	180	300
		60	220	50	200	350
		80	220	80	220	400
		100	220	100	250	500
		120	220	100	300	600
		150	220	200	400	600
		200	220	300	500	800
		250	220	400	600	1000
		300	220	500	700	1000
	10	30	220	50	100	200
		40	220	80	120	250
		50	220	100	150	300
		60	220	100	200	350
		80	220	150	250	400
		100	220	150	300	800
		120	220	150	400	600
		150	220	150	400	600
		200	220	200	500	800
		250	220	250	500	1000
		300	220	300	600	1200
	12	30	220	50	100	200
		40	220	80	120	250
		50	220	100	150	300
		60	220	100	200	350
		80	220	150	250	400
		100	220	150	300	800
		120	220	150	400	600
		150	220	150	400	800
		200	220	200	500	1000
		250	220	200	600	1200
		300	220	300	600	1400
	14	30	220	50	100	200
		40	220	80	120	250
		50	220	100	150	300
		60	220	100	200	350
80		220	150	250	400
100		220	150	300	500
120		220	150	400	600
150		220	150	400	800
200		220	200	500	1000
250		220	200	600	1400
300		220	300	800	1600
16	50	220	200	250	400
	60	220	300	350	600
	80	220	300	400	800
	120	220	300	600	1000
	150	220	500	800	1200
	200	220	500	1000	1500
	300	220	500	1200	2000
	500	220	500	1500	3000
18	50	220	200	300	400
	60	220	300	350	600
	80	220	300	400	800
	120	220	300	500	1000
	150	220	500	800	1200
	200	220	500	1000	1500
	300	220	500	1200	2000
	500	220	500	1800	3500
20	50	220	200	300	500
	60	220	300	400	800
	80	220	300	500	1000
	120	220	300	800	1200
	150	220	500	1000	1500
	200	220	500	1200	1800
	300	220	500	1500	2000
	500	220	1500	2000	4000

Type (Imperial)		L	V (Voltage)	W (Power)
Type	D	L	V (Voltage)	W (Power)
E-MHK	3.1	30	24/220	30	40
		40	24/220	40	50
		50	24/220	50	60
		60	24/220	50	60	80
		80	24/220	80	90	100
		100	24/220	80	100
	6.25	30	220	50	120	200
		40	220	50	120	250
		50	220	50	200	300
		60	220	50	200	300
		80	220	50	200	300
		90	220	50	200	300
		100	220	50	200	400
		120	220	200	300	500
		150	220	200	400	600
	9.42	30	220	50	100	200
		40	220	80	120	250
		50	220	100	150	300
		60	220	100	200	350
		80	220	150	250	400
		100	220	150	300	800
		120	220	150	400	600
		150	220	150	400	600
		200	220	200	500	800
		250	220	250	500	1000
		300	220	300	600	1200
	12.6	30	220	50	100	200
		40	220	80	120	250
		50	220	100	150	300
		60	220	100	200	350
		80	220	150	250	400
		100	220	150	300	800
		120	220	150	400	600
		150	220	150	400	800
		200	220	200	500	1000
		250	220	200	600	1200
		300	220	300	600	1400
	15.77	50	220	200	250	400
		60	220	300	350	600
		80	220	300	400	800
		120	220	300	600	1000
		150	220	500	800	1200
		200	220	500	1000	1500
		300	220	500	1200	2000
		500	220	500	1500	3000
	18.95	50	220	200	300	500
		60	220	300	400	800
		80	220	300	500	1000
		120	220	300	800	1200
		150	220	500	1000	1500
		200	220	500	1200	1800
		300	220	500	1500	2000
		500	220	1500	2000	4000

Product Features

1. 〖Exceptional Dry-Fire Resistance〗· Maximum temperature resistance of 871°C: Technical highlight: Uses high-temperature resistant materials and innovative packaging processes to improve stability and overload resistance at high temperatures, providing better protection against dry firing.
2. 〖Rapid Heating〗· Improved efficiency, reduced energy consumption: Technical highlight: Optimized heating wire structure design allows for higher power loads in a shorter time, thereby increasing heating efficiency.
3. 〖Rugged Structure〗· Fatigue-resistant, does not break: Technical highlight: Uses an internal wiring structure that hides the terminals inside the heating tube, effectively preventing terminal breakage and making it more suitable for applications involving movement or vibration.

Main Materials
Nickel-chromium heat-resistant alloy wire is wound around a ceramic core with excellent high-temperature properties, and insulated with magnesium oxide in a compression-type heater.

(1) Heat-resistant stainless steel armored tube (SUS310S)　 (2) Heating coil (nickel-chromium heat-resistant alloy wire)
(3) High-purity insulated magnesium powder (magnesium oxide) (4) High-purity magnesium oxide rod
(5) Pure nickel wire wrapped with mica fiber (heat resistant up to 300°C)
* The wire diameter depends on voltage and power, generally in the range of ⌀2 to 4

Recommended application scenarios:
High-temperature environments	Semiconductors: diffusion furnaces, LPCVD tube furnaces, wafer reactors
	Metal processing: high-temperature furnaces, heat treatment furnaces, brazing equipment
Medium-temperature environments	3C industry: OLED curing, glass lamination, hot press welding, vacuum coating
	Semiconductors: packaging and molding, baking equipment
Low-temperature upgrade service	✳To address the need for improved efficiency of existing equipment in low-temperature environments, we offer convenient upgrade solutions. No major modifications are required—equipment can be upgraded to the medium- and high-temperature series, significantly enhancing performance and value.

Usage Method

Installation method
●Please minimize the clearance of the mounting hole in the heated metal block as much as possible.
When machining the mounting hole in the metal block, it is recommended that the clearance on one side be less than 0.05.
*The degree of close contact between the heater and the heated object will affect the heater's lifespan. In addition, a large clearance will increase the heating time. Drilled holes can also be used, but it is recommended that all heater mounting holes be reamed. Heating time will increase, and the response speed of temperature control will become slower. The temperature of the heated object should be below 300°C .
*The service life of the heater can vary greatly depending on the operating environment. If the usage temperature or temperature control method is inappropriate, the heater may fail in a short period of time. Therefore, it is recommended to prepare spare cartridge heaters in advance.
Installation Method

Precautions

Precautions for Use
(1) Do not operate the heater dry in the open air. Otherwise, even if only part of the heater's heating section is exposed outside the heated object, abnormal heating may cause disconnection or fire.
(2) Avoid contact between the heater's lead wires and insulator parts with water or similar substances. Otherwise, it may cause electric leakage or short circuit.
(3) Be sure to remove any machining oil or grease used on the holes of the heated part. Otherwise, abnormal heating may occur due to carbonization.
(4) Extremely short ON-OFF cycles will adversely affect the lifespan of the heater. It is recommended to use a controller with PID control.
(5) The nickel rod at the base of the lead wire may break if bent repeatedly.
(6) Do not use a power supply with a voltage higher than the rated voltage (V).
(7) When removing the heater from the heated object, be sure to turn off the power first. Also, do not touch the heater immediately after turning off the power.
(8) The area near the wire outlet should be kept below 130°C.
(9) When using a heater with a flange, the area near the flange should be kept below 180°C.
(10) Cannot be used in a vacuum.
(11) The heater will expand when heating, which may cause the heating element to protrude from the mounting hole. It is recommended to secure it with screws or similar fasteners.
(12) Please select a voltage that matches the operating environment. Using a voltage that exceeds the rated value may damage the heater.
*Additional precautions for various cartridge heaters are listed on each product page. Please be sure to follow the above points as well and use the product correctly.

Usage Precautions

Application Example

Partial examples of tubular heater application mechanisms

Workpiece transfer mechanism with rack & pinion sliding bracket Temperature control heating related parts

Three types of inspections at the same position Sliding bracket Temperature control heating related parts

Belt tension device (using spring)

Sliding bracket, nut, profile, temperature control heating related parts

Clamping and vertical sliding of the welding section via cam bearing mechanism

No need to worry about sensor wiring management even for reversed objects

For more product application examples, please refer to
//my.misumi-ec.com/asia/incadlibrary/keyword.html?keyword=cartridge+heater¤tPage=1

Part Number

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