| ASKERDurometer Type AASKER橡胶硬度计 |
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The Type A Durometer forgeneral rubber (Normal hardness )
The mainstream product used world-wide for measuring various kindsof rubbers, and specified in the standards of JIS K 6253, ASTM D2240, ISO 7619, DIN53505, etc. | |
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Features | |
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| Indentor |
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Height: 2.50mm Shape: Flat ConePoint | |
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| Pressure foot |
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The Pressure foot in contact with thespecimen is 44mm in width and 18mm in depth, wide enough to ensureaccurate measurement.
Another type of durometer with an 18mm diameter pressure foot isavailable. In addition, the Longer Pressure Foot Type (AL Type) isapplicable for measurement of narrow or concave specimens . | |
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| Hardness TesterSelection Chart |
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Our product line consists of varioustypes of durometers applicable to specific materials
as indicated in the chart above.
Type A Durometer (ASKER A type), conforming to JIS K 6235 is themost popular type of durometer for measuring rubber hardness.
However, verification is recommended because a significantdifference is estimated to be the largest when a durometerindicates measurement values from 10 to 90 points.
For hard specimens for which Type A Durometer readings indicatemore than 90 points, measurements should be undertaken using theType D Durometer (ASKER D type). However, for soft specimens withmeasurements of less than 20 points, the ASKER C type or Type EDurometer (ASKER E type) should be used. The most importantconsideration in using durometers is to select the correct type forpurposes of measurement according to the specimen. | |
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Specification | |
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| Standards |
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JIS K 6253
JIS K 7215
ASTM D 2240
ISO 7619
ISO 868
DIN 53505 | |
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| Indicationrange |
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0 point - 100 point (262 degree dialscale) | |
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| Minimumindication |
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1 point (Accuracy : ±1 point) | |
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| Indentor Design(mm) |
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Height: 2.50 35°Angle Flat Cone Point 0.79Dia. | |
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| Spring Forces[mN(g)] |
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| Central hole ofdiameter of Pressure foot |
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Φ3 | |
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Pressurefoot
Dimension (mm) |
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44×18(Rectangular) | |
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| Outer Dimension(mm) |
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Approx. Width 57×Depth 30×Height 76 | |
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| Weight(g) |
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200 | |
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| Application |
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general rubber, soft plastic | |
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Outer Dimension(mm) | |
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| A custom designed pressure foot durometer is availableaccording to specimen conditions. | |
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Option | |
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Two-pointer type (max-hand andactive hand) of Rubber Hardness Tester
The stationary set hand (max-hand) makes the maximum value easierto read and allows the creep characteristics of a specimen.
Accurate measurement is made possible for specimens* for whichstress relaxation occurs over time or for specimens for which it isdifficult to take readings from the front.
*Materials for which the reading decreases immediately after theindentor has been pressed against the surface. | |
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Constant Loader forDurometer
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Constant loarder assures uniform test pressure eliminatingfalse readings due to differences between operators in measuring byhand. |
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High accuracy and repeatability of the hardness readings areassured by the flexible joint function. | | |
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Indentor ExtensionTester
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The gauge to check the indentor height on a durometer and thereading indicator mechanism. |
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Inspection is conducted at 2, 50, and 100 pointsrespectively. | | |
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Load Tester forHardness Tester
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Tester to check load properties of the spring on a durometer |
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Inspection is conducted at 2, 50, and 75 pointsrespectively. | | | |
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