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Specimen Grip for Tire Cords

These pneumatic grips for yarn and tire cord are single-actuator grips for clamping fibrous or filamentary tensile specimens.

The load-reduction curve with 180° deflection gently reduces the tensile force before the clamping point. Pneumatic clamping ensures constant gripping force with easy, reproducible adjustment. The specimen is held securely and jaw breaksduring the test are avoided.

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Key Advantages and Features

  • With pneumatic end clamping the gripping force remains constant, allowing high specimen throughput.
  • Automatic centering of specimens via guide grooves in the load reduction curve.
  • No transverse forces are transmitted to the load cell via the specimen grips.
  • The symmetrical weight distribution allows the center of gravity of the grips to be near the tensile axis.
Grips employing deflection (capstan grips)

Specimen Grip for Tire Cords

  • Specimen material:
    textiles, plastics
  • Specimen shape:
    single and ply yarn, twine, multifilaments
  • Type of loading:
    tensile
  • Standard:
    tire cord to ASTM D885, single and ply yarn to ISO 2062

Advantages and features (tire cords)

  • Secure holding of the specimen ensures reliable test results, even with specimens prone to shrinkage.
  • High specimen throughput thanks to quick specimen insertion and centering via guide groove.
  • Fast, easy two-handed specimen change - grips operated via foot control unit.
  • The load-reduction curve ensures gentle gripping with no jaw breaks.
  • Interchangeable load reduction curves enable optimum adaptation of the specimen grips to accommodate different specimen materials.
  • The jaws can be changed quickly and easily for different applications - no tools required. The jaws are centered automatically.

Technical data, Fmax 2.5 kN

Type

8297

Item No.

326020

Operating principle/identification

Pneumatic, single-side closing

Test load Fmax

2.5

kN

Gripping force at 6 bar

5.8

kN

Operating pressure

3 ... 10

bar

Dimensions

Height

183

mm

Width

215

mm

Depth

72

mm

Depth with insertion aid

109

mm

Depth with insertion aid and connection unit

134

mm

Opening width, max. with jaws

4

mm

Weight per specimen grip, approx.

4

kg

Connection, stud

Ø 20

mm

Ambient temperature

+15 ... +35

°C

Scope of delivery

2

pieces

Jaws supplied

Steel, ground

Gripping area

Height

60

mm

Width

32

mm

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