If you are using urethane rubber rollers, and want to extend their lives, try our AH rollers.
- In areas that require wear resistance, urethane rubber is frequently used.
However, because of its poor heat resistance and water resistance, urethane rubber has disadvantages, such as softening deterioration, reduced adhesion force with metals at a high temperature, and exothermic fusion at a high rotational speed.
Our AH rubber products resolve these disadvantages of urethane rubber. - (Asahi High Performance Rubber) has approximately the same wear resistance as urethane, and excellent heat resistance, water resistance, and oil resistance, and is excellent at maintaining adhesion power with metals.
Especially, the edge wear resistance of our product is better than that of urethane and experiences no fusion at a high rotational speed.
As just described, our products are a new type of synthetic rubber which demonstrates its abilities under severe conditions.
As an epoch-making invention as a synthetic rubber, AH rubbers makes a diverse range of colors possible, and find a wider range of applications, such as interior applications.
Features
- -The same wear resistance as that of urethane rubber. Excellent heat resistance, oil resistance, and water resistance.
- -No heat generation and fusion at a high rotational speed
- -Excellent adhesion power with metals at a high temperature.
- -Excellent chromogenic property which makes a diverse range of colors possible.
- -You can choose a suitable one from our various grades.
Comparison with urethane
Comparison of heat resistance with urethane (120°C x 70 hrs.)
| Change rate of elongation rate (%) | |
|---|---|
| AH roller |  |
| Urethane (ether) | |
| Change rate of tensile strength (%) | |
|---|---|
| AH roller |  |
| Urethane (ether) | |
The above-mentioned values are representative values obtained using the prescribed test methods.
Refer to the values only as a guide to select the most suitable grade for your purpose.
The above-mentioned values may be changed for property improvement.
Evaluation results of heat aging resistance
- -Comparison of the frequency of generation of strand drops by pelletizer take-off rollers (our test values)
- In urethane roll specimens, many strand drops were observed after 1 month of use.
- In AH-M (general purpose) specimens, strand drops started to be observed after about 4 months of use.
- In AH-T (heat resistance) specimens, no strand drops were observed even after 10 months of use.
| Evaluation results of heat aging resistance Comparison of the frequency of generation of strand drops by pelletizer take-off rollers |
||
|---|---|---|
| (times) | (Our test values) | |
 |
 |
- Urethane - AH-M - AH-T |
 |
(months) | |
| <Operating period> | ||
The above-mentioned values are representative values obtained using the prescribed test methods.
Refer to the values only as a guide to select the most suitable grade for your purpose.
The above-mentioned values may be changed for property improvement.
Basic properties
- -Suitable for applications that require wear resistance, edge wear resistance, as well as heat resistance and water resistance, or measures to be taken against rubber deterioration by heat or accumulation of heat, or reduction of adhesion power.
| Properties | Unit | Grade | ||||
|---|---|---|---|---|---|---|
| AH-M (general-purpose) |
AH-T (heat resistance) |
AH-S (wear resistance) |
||||
| Mechanical properties | Hardness (JIS K-6301) |
Hs | 80 | 80 | 85 | |
| Tensile strength (JIS K-6301) |
MPa | 25 | 20 | 21 | ||
| Elongation rate (JIS K-6301) |
% | 400 | 400 | 200 | ||
| Tear strength (JIS K-6301) |
KN/m | 50 | 50 | 45 | ||
| Wear resistance | Akron type | 10 lb, 15° |
mg/1000 times | 70 | 55 | 25 |
| 25 lb, 25° |
mg/1000 times | 250 | 210 | 80 | ||
| Taber's type | H-22, 1kg |
mg/1000 times | 80 | 70 | 35 | |
| Pyrogenic property | tanδ (20Hz) | - | 0.15 | 0.15 | 0.10 | |
| Heat aging resistance | Hardness change | Hs | 100°C × 72hrs. +5 | 120°C × 72hrs. +6 | 100°C × 72hrs. +6 | |
| Change rate of tensile strength | % | 100°C × 72hrs. -10 | 120°C × 72hrs. -25 | 100°C × 72hrs. -5 | ||
| Change rate of elongation rate | % | 100°C × 72hrs. -25 | 120°C × 72hrs. -40 | 100°C × 72hrs. -20 | ||
| Oil resistant JIS No. 1 oil | Hardness change | Hs | 100°C × 72hrs. +3 | 120°C × 72hrs. +2 | 100°C × 72hrs. +4 | |
| Change rate of tensile strength | % | 100°C × 72hrs. -22 | 120°C × 72hrs. +6 | 100°C × 72hrs. -45 | ||
| Change rate of elongation rate | % | 100°C × 72hrs. -38 | 120°C × 72hrs. -6 | 100°C × 72hrs. -59 | ||
| Change rate of volume | % | 100°C × 72hrs. -3 | 120°C × 72hrs. -2 | 100°C × 72hrs. +1 | ||
| Water resistance (hot water) | Hardness change | Hs | 70°C × 7days -1 | 70°C × 7days -1 | 70°C × 7days -1 | |
| Change rate of weight | % | 70°C × 7days +4 | 70°C × 7days +6 | 70°C × 7days +4 | ||
* The above-mentioned values are representative values obtained using the prescribed test methods.
Refer to the values only as a guide to select the most suitable grade for your purpose.
The above-mentioned values may be changed for property improvement.
Example applications
- Food products, fibers, paper making :
- scrapers, cutter receiving roll, doctor blade, high-speed rotary forwarding roller, paper holding roller, paper supply roller, etc.
- Construction, transportation :
- building materials forwarding roller, belt cleaner, wiper, cramping material, etc.
- Electric precision equipment :
- driving pulley, platen roller, etc.
- Steel and metal equipment :
- turning and other rollers
