The magnesium oxide insulator

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We carefully correspond to the customer requirement. We supply the product suitable for the customer requirement.

 The magnesium oxide insulator(TATECERA®)

Feature

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.
We can produce the magnesium oxide insulator of various purities and various densities(=strength).
In addition, we 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.
Our company produces it with the system of the QC(quality control) based on ISO9001.

The physical properties table concerning main insulator and guide insulator

Properties table concerning main insulator.
Grade TATECERA®EMG
TypeA TypeB
Chemical properties 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 a guaranteed values.

The standard grade of main insulator

We have two-holed shape insulators(TypeB2)of the following size as a standard products.

The standard grade of main insulator

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±0.1 200.0±1.0
2 5.0±0.10 1.2±0.10 2.30±0.1 200.0±1.0
3 6.0±0.20 1.5±0.10 2.50±0.1 200.0±1.0
4 7.0±0.20 2.0±0.10 2.95±0.1 200.0±1.0
5 8.0±0.20 2.0±0.10 3.70±0.1 200.0±1.0
6 9.0±0.20 1.8±0.10 4.80±0.1 200.0±1.0
7 10.0±0.20 2.2±0.10 4.40±0.1 200.0±1.0
8 11.0±0.20 1.8±0.10 5.55±0.1 200.0±1.0
9 12.0±0.25 3.1±0.10 5.40±0.1 200.0±1.0

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.

Round bar shape insulator

Size
Outside diameter (OD) mm 0.5~10.0
Length (L) mm 20~100

* We 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.

One holed shape insulator (Pipe・Tube)

Size
Outside diameter (OD) mm 1.2~18.0
Inside diameter (ID) mm 0.6~10.0
Length (L) mm 50~200

* We 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.

Tow holed shape insulator

Size
Outside diameter (OD) mm 1.4~30.0
Hole diameter (D1) mm 0.4~4.5
Length (L) mm 50~200

* We 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.

Four holed shape insulator

Size
Outside diameter (OD) mm 2.1~20.0
Hole diameter (D1) mm 0.35~4.0
Length (L) mm 100~200

* We can produce it in 0.2 mm.
* The combination of different hole diameters is possible.

Six holed shape insulator

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

Six holed shape insulator

Size
Outside diameter (OD) mm 4.5
Hole diameter (D1) mm 0.6
Length (L) mm 100

* We can produce it in 0.2 mm. We can produce more than six holes.

Non-round bar shape insulator

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

Non-round ber shape insulator

Size
Width(W)mm 43.0
Thickness(T)mm 6.5
Length(L)mm 200
Hold diameter(D1)mm 3.5

* This is example of non-round bar shape insulator . We can produce it in 0.2 mm.

 The magnesium oxide insulator(TATECERA®)

The shape list of guide insulator

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 insulator

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

* We can produce it in 0.2 mm.

Special shape guide insulator

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 insulator A2

Special shape guide insulator B2

* We can produce it according to request size or shape.

 


Company

Tateho Chemical Industries Co.,Ltd.

  • Paid-up Capital : JPY 450 Million
  • Number of Employees : Approx.270
  • Establishment : 1966

Received ISO9000, 14000

"Tateho's vision of creating new environment-friendly materials"

Tateho Chemical Industries Co., Ltd. was born in the town of Ako--an area blessed with a warm climate and the abundant marine resources of the Inland Sea of Japan.
The history of the salt industry in Ako is long--dating back nearly 1300 years to the Nara period.
In 1966, Tateho was established as a group of engineers seeking to provide new materials widely useful for society by putting this inherited, time-honored wisdom into full use, and by effectively utilizing bittern, a substance left after separating salt from seawater.
Since then, we have continued to provide the world with highly functional products--including magnesium oxide, magnesium hydroxide, electrofused magnesium oxide, single crystal magnesium oxide, flame retardants, and ceramics--by expanding our businesses on the basis of our proprietary crystallization control technology.
We are committed to contributing to industry worldwide under the slogan of "Aiming to be a development-oriented company friendly to the natural environment and leading the world with proprietary technologies" by continuously adhering to our environmental policy and further improving our proprietary technologies.