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Various magnesium oxide insulators, TATECERA® EMG made by Tateho Chemical

TATECERA®️EMG

Magnesium Oxide Insulator

High-quality magnesium oxide ceramics produced through integrated production from raw materials to products

summary

Features

The magnesium oxide insulator is used for the cartridge heater, the sheathed heater, and the glow plug, because the magnesium oxide is superior in the electric insulation characteristics (1014Ω) and the heat conductance (60W・m-1・K-1).
The magnesium oxide insulator is used as an insulated core that wraps an exothermic wire and as a guide insulator that guide a metal wire.
Tateho can produce the TATECERA®EMG magnesium oxide insulator of various purities and various densities (=strength).
In addition, Tateho can produce the high purity product and various shape and the size (outside diameter, hole diameter, pitch, and length).
Therefore, if our insulator is used, it becomes easy to produce the heater.
Tateho offers high-quality products with the quality control system based on ISO9001.

Properties Table for Main Insulator (Chemical Composition and Physical Properties (Typical))

Grades TATECERA®️EMG
TypeA TypeB
Chemical composition MgO (%) 99.8 99.1
CaO (%) 0.05 0.39
SiO2(%) 0.02 0.29
Al2O3(%) 0.04 0.13
Fe2O3(%) 0.02 0.06
B2O3(%) <0.001 0.01
Physical properties

Bulk density(103kg・m-3)

2.3~2.5
Bending strength (MPa) 20~40
Chemical composition: X-ray fluorescence method
*The properties are the typical values and not the guaranteed values.

Standard Products of Main Insulator TATECERA® EMG

Tateho has two-holed shape insulators (TypeB) of the following sizes as standard products.

Two-holed magnesium oxide insulators, TATECERA EMG
No. Outside diameter (OD) mm Hole diameter (D1) mm Pitch (P) mm Length (L) mm
1 4.0±0.10 1.0±0.10 1.85±0.10 200.0±1.0
2 5.0±0.10 1.2±0.10 2.30±0.10 200.0±1.0
3 6.0±0.20 1.5±0.10 2.50±0.10 200.0±1.0
4 7.0±0.20 2.0±0.10 2.95±0.10 200.0±1.0
5 8.0±0.20 2.0±0.10 3.70±0.10 200.0±1.0
6 9.0±0.20 1.8±0.10 4.80±0.10 200.0±1.0
7 10.0±0.20 2.2±0.10 4.40±0.10 200.0±1.0
8 11.0±0.20 1.8±0.10 5.55±0.10 200.0±1.0
9 12.0±0.25 3.1±0.10 5.40±0.10 200.0±1.0
Chemical composition: X-ray fluorescence method
*The properties are the typical values and not the guaranteed values.

The Shape List of Main Insulator

Round bar shape insulator

The round bar shape insulator is used for the glow plug for the diesel engine to decide the position of an exothermic wire.

Magnesium oxide insulators, TATECERA EMG in round bar shape
Size
Outside diameter (OD) mm 0.5~10.0
Length (L) mm 20~100
*Tateho can produce it in 0.1 mm

One holed shape insulator (Pipe Tube)

The one holed shape insulator is used for the long sheath heater to prevent an exothermic wire from contacting with sheath.

Magnesium oxide insulators, TATECERA EMG in round bar shape with one hole
Size
Outside diameter (OD) mm 1.2~18.0
Hole diameter (D1) mm 0.6~10.0
Length (L) mm 50~200
*Tateho can produce it in 0.2 mm

Two holed shape insulator

The two holed shape insulator is used for the cartridge heater as an insulated core that wraps an exothermic wire.

Magnesium oxide insulators, TATECERA EMG in round bar shape with two holes
Size
Outside diameter (OD) mm 1.4~30.0
Inside diameter (ID) mm 0.4~4.5
Length (L) mm 50~200
*Tateho can produce it in 0.1 mm.

Four holed shape insulator

The four holed shape insulator is used for the cartridge heater that builds in the thermocouple and that insert an exothermic wire in the hole of it.

Magnesium oxide insulators, TATECERA EMG in round bar shape with four holes
Size
Outside diameter (OD) mm 2.1~20.0
Inside diameter (ID) mm 0.35~4.0
Length (L) mm 100~200
*Tateho can produce it in 0.2 mm.
*The combination of different hole diameters is possible.

Six holed shape insulator

Tateho can produce the thermocouple integration type and zone division type etc. according to the design of the customer.

Magnesium oxide insulator, TATECERA EMG in round bar shape with six holes
Size
Outside diameter (OD) mm 4.5
Inside diameter (ID) mm 0.6
Length (L) mm 100
*Tateho can produce it in 0.2 mm.
*Tateho can produce more than six holes.

Non-round bar shape insulator

Tateho can produce the insulator of non-round bar shape according to the design of the customer.

Magnesium oxide insulators, TATECERA EMG in non-round bar shape
Size
Width(W)mm 43.0
Thickness(T)mm 6.5
Length (L) mm 200
Hole diameter(D1)mm 3.5
*This is an example of non-round bar shape insulator.
*Tateho can produce it in 0.2 mm.

Shape List of Guide Insulator TATECERA® PMG

Bottom shape guide insulator

The bottom shape guide insulator is used for the tip of the cartridge heater to fix a main insulator.

Bottom shape guide insulators made of magnesium oxide, TATECERA EMG
Size
Outside diameter (OD) mm 2.9~29.0
Inside diameter (ID) mm Outside diameter of main insulator
Height(H)mm 2.0~5.0
Depth(h)mm 1.0~3.0
*Tateho can produce it in 0.2 mm.

The special shape guide insulator is used for the intermediate part of the cartridge heater to prevent a metal wire from contacting with sheath.

Special shape guide insulators made of magnesium oxide, TATECERA EMG Special shape guide insulators made of magnesium oxide, TATECERA EMG
*Tateho can produce it according to request size or shape.

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