top of page
TANKEN_Header.jpg

Carbon Bearings

Product Introduction

We are the only seal manufacturer in the world that produces carbon in-house.
The general characteristics of carbon are "small thermal expansion", "large thermal conduction", "strong against thermal shock", "high heat resistant temperature", "self-lubricating", and "light". It has excellent chemical resistance. ”
We have various grades of carbon as shown below, and we use them properly according to the specifications and applications.
We are also researching and developing higher performance carbon.

TANKEN-Carbon_edited.jpg
TANKEN

We integrate our research & development into carbon materials and our technical development of mechanical seal parts with our design, production, and sales.

Example of using carbon bearings

Our company, which researches and develops carbon in-house, possesses carbon with various characteristics. We can also handle products with short delivery times by controlling our own processes. If possible, we also accept trial production.

TANKEN CARBON PROPERTIES

Material code
Composition
Permeability
Proportion
Hardness (Hs)
Flexural strength (N/mm2)
Compression strength (N/mm2)
Young's modulus (×103N/mm2)
Poisson's ratio
CTE (× 10-6/K)
Thermal conductivity (W/m･K)
Specific heat (× 103J/Kg・K)
In the air (℃)
B11*
Carbon graphic Non-impregnation
Penetration
1.68
70
55
135
10
0.2
4
12
0.7
350
B30*
Carbon graphic Resin impregnation
Impervious
1.77
75
65
165
12
0.2
5
15
0.7
250
B40*
Carbon graphic Resin impregnation
Impervious
1.77
75
65
165
12
0.2
5
15
0.7
250
C10*
Carbonaceous Non-impregnation
Penetration
1.72
90
63
165
14
0.2
5
4
0.7
350
C20*
Carbonaceous Non-impregnation
Impervious
1.77
105
73
250
17
0.2
6
5
0.7
350
C30*
Carbonaceous Resin impregnation
Impervious
1.77
100
73
250
17
0.2
6
5
0.7
250
C40*
Carbonaceous Resin impregnation
Impervious
1.77
100
73
250
17
0.2
6
5
0.7
250
E11*
Carbonaceous Non-impregnation
Penetration
1.45
105
80
250
23
0.2
4
5
0.7
350
F10*
Carbonaceous Impregnation
Penetration
1.75
105
93
350
40
0.3
6
5
0.7
350
F40
Carbonaceous Resin impregnation
Impervious
1.85
110
103
400
40
0.3
7
7
0.7
250
F60*
Carbon graphic Non-impregnation
Minor
1.78
100
90
280
18
0.2
6
4
0.7
350
F70*
Carbon graphic Non-impregnation
Impervious
1.85
106
103
300
20
0.3
7
7
0.7
350
F90*
Carbon graphic Resin impregnation
Impervious
1.83
110
110
330
20
0.3
7
4
0.7
250
V21
resin bonds
Penetration
1.85
20
22
14
1.9 (Note 4)
-
// 23.0 ⊥ 33.0 (Note 5)
4
-
230
V23
resin bonds
Impervious
1.95
30
30
1.9 (Note 4)
2.2
-
// 23.0 ⊥ 33.0 (Note 5)
4
-
200

Note 4) The stress when the strain amount is 5% (the stress at which, when at 20 ° C, 5% strain occurs) is displayed.
Note 5) ⊥: Axial direction, //: Radial direction.

​

Carbon with excellent wear resistance
C20・C40・E11・F10・F70・F90

Carbon with excellent blister resistance
C20 / F70 / F90

Carbon with excellent dry resistance
F60 / F70 / F90 / V21 / V23

Carbon with excellent corrosion resistance
C20 / F70 / F90

bottom of page