ASKER Durometer Type CS

The ASKER Durometer Type CS is designed to decrease false readings of measurements for polystyrene foam by simultaneously deforming multiple granular foams.

The larger indentor and stronger spring than those of the ASKER Type C enable the stable measur
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Height: 2.54mm Shape: Cylindrical
Pressure foot
A 50mm diameter pressure foot in contact with a specimen, is wide enough to offer stable measurement.
Hardness Tester Selection Chart
Our product line consists of various types of durometers applicable to specific materials
as indicated in the chart above.

Type A Durometer (ASKER A type), conforming to JIS K 6235 is the most popular type of durometer for measuring rubber hardness.

However, verification is recommended because a significant difference is estimated to be the largest when a durometer indicates measurement values from 10 to 90 points.

For hard specimens for which Type A Durometer readings indicate more than 90 points, measurements should be undertaken using the Type D Durometer (ASKER D type). However, for soft specimens with measurements of less than 20 points, the ASKER C type or Type E Durometer (ASKER E type) should be used. The most important consideration in using durometers is to select the correct type for purposes of measurement according to the specimen.

Indication range 0 point - 100 point (262 degree dial scale)
Minimum indication 1 point (Accuracy : ±1 point)
Indentor Design (mm) Height: 2.54 10 Dia. Cylindrical
Spring Forces [mN(g)]
0 point: 980(100)
100 point: 44100(4500)
Central hole of diameter of Pressure foot Φ10.5
Pressure foot
Dimension (mm)
Φ50(Round shape)
Outer Dimension (mm) Approx. Width 50×Depth 50×Height 76
Weight (g) 250
Application Polystyrene foam

Two-pointer type (max-hand and active hand) of Rubber Hardness Tester
The stationary set hand (max-hand) makes the maximum value easier to read and allows the creep characteristics of a specimen.

Accurate measurement is made possible for specimens* for which stress relaxation occurs over time or for specimens for which it is difficult to take readings from the front.

*Materials for which the reading decreases immediately after the indentor has been pressed against the surface.
Constant Loader for Durometer
· Constant loarder assures uniform test pressure eliminating false readings due to differences between operators in measuring by hand.
· High accuracy and repeatability of the hardness readings are assured by the flexible joint function.
Indentor Extension Tester
· The gauge to check the indentor height on a durometer and the reading indicator mechanism.
· Inspection is conducted at 2, 50, and 100 points respectively.
Load Tester for Hardness Tester
· Tester to check load properties of the spring on a durometer
· Inspection is conducted at 2, 50, and 75 points respectively.


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