Rope Grips

Tensile stress on the specimen is reduced via frictional contact with the load reduction roller. The ends are clamped mechanically via a screw (with force amplification if required), a wedge, or a hydraulic gripping unit.
Rope grips_50 kN_+FO

Key Advantages and Features

  • Maximum test load: 2.5 to 100 kN
  • Tensile force reduction via single or multiple looping
  • Interchangeable load reduction rollers for a perfect fit with specimen material
  • Quick, easy specimen insertion requires little effort, making these grips suitable for series testing

Rope Grips

Fmax 2.5 kN

  • Specimen material:
    Non-rigid plastics and textiles
  • Specimen shape:
    Ropes, strings
  • Type of loading:
    Tensile

Advantages and features

  • Tensile force reduction through multiple looping
  • Tensile force reduction through single looping and knotting
  • Specimen insertion requires little effort
  • Self-gripping of specimen eliminates additional gripping via threads or pneumatic actuator This specimen grip is a cost-efficient solution for testing requirements.

Function description

The rope grip can be used to grip tensile specimens.

The closing force is generated via rope friction and knotting or wrapping. The specimen's tensile stress is largely reduced via friction on the load reduction roller.

The specimen is automatically centered by the load reduction roller's grooves when wrapped.

Rope Grips

Fmax 2.5 kN
  • Specimen material:
    metallic materials, plastics, natural fibers
  • Specimen shape:
    rope, narrow
  • Type of loading:
    Tensile

Advantages and features

  • Tensile force reduction via single or multiple looping
  • Interchangeable load reduction rollers for a perfect fit with specimen material
  • Various jaw inserts are available for different specimen materials and diameters
  • Quick, easy specimen insertion
  • Automatic centering of specimen via guide grooves

Function description

The rope grip can be used to grip tensile specimens.

The closing force is generated via looping and additional screw end clamping. The specimen loops around the load reduction roller once or multiple times. The specimen's tensile stress is largely reduced via frictional contact. The end of the specimen is gripped via integrated screw end clamping.

The specimen is automatically centered by the load reduction roller's grooves when wrapped.

Grips for High-Strength Ropes

Fmax 10 kN and Fmax 50 kN
Grips for ropes
Rope Grips
  • Specimen material
    High-strength ropes and yarns, compressible ropes, assemblies, soft wires
  • Specimen shape
    Rope
  • Type of loading
    Tensile

Advantages and features

  • Tensile force reduction via single or multiple looping
  • The closing force is applied via a mechanical threaded connection with a very high ratio. Very high closing forces are achieved with at least 2.5 times the maximum nominal load with normal specimen grip pulling
  • Specimen treatment such as end-coating is eliminated due to high closing forces
  • Interchangeable load reduction rollers for a perfect fit with specimen material. Large roller diameter for rigid ropes (wires, wire ropes), small roller diameter for flexible ropes (natural fiber ropes, plastic ropes)
  • Various jaw inserts are available for different specimen materials and diameter ranges
  • Easy specimen insertion makes these grips suitable for series testing
  • Automatic centering of specimen via guide grooves

Function description

The rope grip can be used to grip tensile specimens.

The carrier plate, load reduction rollers, end clamping and jaws are compiled.

The specimen is ergonomically and material sparingly wrapped around the load reduction rollers, only touching the ends of the specimen materials. This type of wrapping is particularly suited for very sensitive surfaces.

The specimen's tensile stress is largely reduced via frictional contact on the load reduction roller. Specimen ends are mechanically gripped via a screw end clamping (with force amplification if required) or hydraulic clamping element.

The specimen is automatically centered by the load reduction roller's grooves when wrapped.

Rope Grips

Grips for Ropes and Steel

Fmax 100 kN
  • Probenmaterial:
    vor allem Stahl, teilwweise auch Kunststoffe
  • Probenform:
    Seil
  • Beanspruchungsart:
    Zug

Advantages and features

  • Tensile force reduction via single or multiple looping.
  • Interchangeable load reduction rollers for optimum matching to specimen material.
  • Various jaw inserts are available for different specimen materials and diameter ranges.
  • Quick specimen insertion makes these grips suitable for series testing.

Function description

The rope grip can be used to grip tensile specimens.

The specimen grip contains load reduction rollers and mechanical wedge end clamping.

The closing force is generated via looping and additional screw end clamping. The specimen loops around the load reduction roller once or multiple times. The specimen's tensile stress is largely reduced via frictional contact. The end of the specimen is gripped via integrated wedge end clamping.

Rope Grips

Grips for Ropes and Yarns

Ideal for compressible ropes, assemblies and soft wires, Fmax 100 kN.
  • Specimen material
    High-strength ropes and yarns, compressible ropes, assemblies, soft wires
  • Specimen shape
    Rope
  • Type of loading
    Tensile

Advantages and features

  • Tensile force reduction via single or multiple looping.
  • Optimal clamping via precisely defined and reproducible clamping pressure.
  • Hydraulic end-clamping enables high closing force, thereby eliminating specimen treatment such as end-coating.
  • Interchangeable load reduction rollers for optimum matching to specimen material.
  • Various jaw inserts are available for different specimen materials and diameter ranges.
  • Quick specimen insertion makes these grips suitable for series testing.

Function description

The rope grip can be used to grip tensile specimens.

The specimen grip is modularly mounted, thereby optimally adjusting to the specimen material.

Three different load reduction rollers are available together with various jaw inserts.

The specimen is ergonomically and material sparingly wrapped around the load reduction rollers,

The specimen's tensile stress is largely reduced via frictional contact on the load reduction roller. The substantial roller depth accommodates up to four loops. The remaining residual force is absorbed by means of hydraulic end clamping, enabling jaw breaks to be avoided completely.

Technical Overview

Specimen grips for ropes are available from Fmax 2.5 kN to Fmax 100 kN test loads.

Fmax 2.5 kN

Specimen Grip with Non-Rigid Plastics and Textiles

Item no.

313440

Type

8265

Operating principle/identification

Knotting and wrapping

Test load, max. (Fmax)

2.5

kN

Height

79.7

mm

Width

44

mm

Depth

32

mm

Groove radius

2.5

mm

Specimen thickness, max.

5

mm

Connection

Ø 20

mm

Weight, approx.

0.18

kg

Ambient temperature

-70 to +250

°C

Scope of delivery

2

pieces

Fmax 2.5 kN

Specimen Grips for Metallic Materials, Plastics, and Natural Fibers

Item no.

318688

Type

8270

Operating principle/identification

Looping and additional screw end clamping

Test load, max. (Fmax)

2.5

kN

Height

51

mm

Height with optional load reduction roller Ø30/60/100 mm

118/122/136

mm

Width

32

mm

Width with optional load reduction roller Ø30/60/100 mm

174/204/244

mm

Depth

78

mm

Specimen diameter, max.

8

mm

Connection

Ø 20

mm

Weight, approx.

1.5

kg

Ambient temperature

-70 to +250[1]

°C

Scope of delivery

2

pieces

  1. It is possible that the temperature range is limited by a smaller jaw temperature range.

Fmax 10 kN and 50 kN

Specimen Grips for High-Strength Ropes and Yarns

Carrier Plate (1 Required)

Item no.

324566

324568

Type

8370

8470

Test load, max. (Fmax)

10

50

kN

Connecting diameter

20

36

mm

Weight per carrier plate, approx.

3.6

3.6

kg

Ambient temperature

-70 to +250

-70 to +250

°C

Scope of delivery

2

2

pieces

Fmax 100 kN

Specimen Grips for Steel and Plastics

Item no.

319579

Type

8570

Test load, max. (Fmax)

100

kN

Height without load reduction roller

312

mm

Height with load reduction roller Ø90/200/280 mm

315/421/501

mm

Width without load reduction roller

315

mm

Width with load reduction roller Ø90/200/280 mm

316/347/370

mm

Depth

168

mm

Weight per specimen grip (without load reduction roller and jaws), approx.

35

kg

Connection

Ø 60

mm

Ambient temperature

-40 to +250[1]

°C

Scope of delivery

2

pieces

  1. It is possible that the temperature range is limited by a smaller jaw temperature range.

Fmax 100 kN

Specimen Grips for High-Strength Ropes and Yarns

Item no.

072965

Type

8570

Test load, max. (Fmax)

100

kN

Closing force (max at 300 bar compression)

170

kN

Connection

Ø 60

mm

Weight, approx.

52

kg

Ambient temperature

+10 to +35

°C

Scope of delivery

2

pieces

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