Specimen grip for steel strip cord

The specimen grip for steel strip cord

The pneumatic grip for yarn and tire cords is a single actuator grip used on filamentary tensile specimens.

The specimen grip is suitable for steel tire cords to BISFA.

The force reduction curve employing 270° deflection carefully reduces the tensile force on the clamping position. The pneumatic clamping ensures a constant gripping force and can be easily and reproducible set. The specimen is held securely, jaw breaks are avoided. A guide groove is integrated into the load reduction roller and basic unit for thread feeding, Therefore the specimen is conveniently and quickly positioned in the tensile axis.

Advantages & features

Function description

The load-reduction curve with 270° 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 breaks are avoided.

A guide groove for feeding in the yarn is incorporated into the load reduction roller and basic unit, allowing the specimen to be positioned in the tensile axis quickly and easily.

Advantages

Secure holding of the specimen ensures reliable test results, even with specimens prone to shrinkage.

High specimen throughput thanks to quick specimen insertion and exact centering with insertion aid and 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.

The symmetrical weight distribution of the grips ensures accurate force measurement.

BISFA 2002

The grips are especially suitable for steel tire cords to BISFA.

Pneumatic Control Unit for Specimen Grips

The closing force of the pneumatic grips can be steplessly set via a pneumatic control unit, which ensures safe gripping of a wide range of different materials. The opening and closing of the specimen grips can be controlled by foot switches or via the remote control of the materials testing machine for greater operating comfort.

More information about the pneumatic control unit

Technical overview

Item No.	1106818
Type	8397
Operating principle/identification	pneumatisch, einseitig schließend
Test load F_max	10	kN
Operating pressure	1 ... 10	bar
The operating pressure depends on the upstream components.
Gripping force at 6 bar	30	kN
Gripping force at 10 bar	50	kN
Opening width	5	mm
Dimensions
Height	220	mm
Width	369	mm
Depth	113	mm
Depthwith connection unit	139	mm
Connection, hole	Ø 20	mm
Weight per specimen grip, approx.	12.5	kg
Ambient temperature	+10 ... +35	°C
Scope of delivery	2	piece(s)
Supplied load reduction curve
Length per load reduction curve	330	mm
Deflection	270	°
Jaws supplied
Surface	Steel, smooth, hardened
Length	60	mm
Hardness	58 HRC