Eccentric Roller Grips for Thin and Flexible Specimens

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Eccentric Roller Grips for Thin and Flexible Specimens

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Optimized Clamping System for Tensile Testing of Sheet Materials and Soft Specimens

Eccentric Roller Grips for Thin and Flexible Specimens

Eccentric roller grips from NextGen Test meet the demanding needs of tensile testing applications involving thin, flexible, or soft materials. Utilizing a friction-based clamping mechanism activated by an eccentric cam roller, these grips ensure automatic alignment and firm engagement of the specimen without slippage or damage. The gripping force increases with the applied test load, making them suited to materials that are sensitive to pressure or deformation. These grips are particularly suitable for applications in packaging, film, sheet material, textiles, and soft metals. All models are fully compatible with NG-EML and SHM Universal Testing Machines and conform to international standards including ISO 6892, ASTM D882, and DIN 51221.


Eccentric Roller Grip Models

Three grips share the same cam mechanism, the same Ø10 mm pin mount and the same 30 mm specimen width. What separates them is force and body size, so the choice comes down to the break load you expect and the room you have in the frame. The lightest one starts the range at 500 N.

Model NGA502A

Eccentric Roller Tensile Grip

The NGA502A Eccentric Roller Grip is built for precise tensile testing of thin, soft, and low-strength materials such as rubber sheets, plastic films, and soft composites. It utilizes an eccentric roller mechanism to generate increasing clamping force as the tensile load rises, so the specimen remains securely held without damaging its surface. This compact grip is suited to delicate materials that are prone to tearing or slippage in standard fixtures, and it offers smooth operation under low-force testing conditions.

NextGen Tensile grip Eccentric roller NGA502A
  • Application: Tension tests for rubber, plastic films, and soft sheet materials.
  • Maximum Capacity: Up to 500 N load.
  • Connection: Ø10 mm pin mount (upper and lower), compatible with most universal testing machines.
  • Dimensions: Height 80 mm; Grip body width 30 mm; Overall width 50 mm.
  • Specimen Range: Suitable for specimens up to 30 mm in width.
  • Grip Weight: Approximately 0.44 kg each for upper and lower grip.
  • Working Temperature: Ambient laboratory environment.
Table 1. NGA502A Eccentric Roller Grip for Soft Materials
Parameter Specification
Application Tension test for rubber, plastic film and soft material
Maximum Force Capacity ≤ 500 N
Connection Type Upper Grip: Ø10 mm pin
Lower Grip: Ø10 mm pin
Overall Height (A) 80 mm
Grip Body Width (B) 30 mm
Overall Width (C) 50 mm
Working Temperature Ambient
Grip Weight Upper Grip: 0.44 kg
Lower Grip: 0.44 kg
Compatible Specimen Width ≤ 30 mm

The second grip holds the same 500 N rating but spreads it over a much wider body, 4.9″ (125 mm) against 30 mm. It is the one to take when the frame has the room and the specimen needs a broader seat.

Model NGA502B

Eccentric Roller Tensile Grip

The NGA502B Eccentric Roller Grip is tailored for tensile testing of soft sheet materials such as rubber, plastic film, and other deformable specimens. Featuring an eccentric cam mechanism, the grip applies increasing clamping pressure in response to tensile load, effectively securing the specimen without slippage or surface damage. Compared to smaller models, the NGA502B offers a more heavy-duty build and larger grip body, making it suited to medium-sized test setups requiring consistent performance under low-force testing conditions.

NextGen Tensile grip Eccentric roller NGA502B
  • Application: Tension tests for rubber, plastic films, and soft materials.
    Maximum Capacity: Up to 500 N load.
  • Connection: Ø10 mm pin mount (upper and lower), compatible with standard UTMs.
  • Dimensions: Height 97 mm; Grip body width 4.9″ (125 mm).
  • Specimen Range: Supports specimens up to 30 mm wide.
  • Grip Weight: Approximately 2.5 lbs (1.13 kg) each for upper and lower grip.
  • Working Temperature: Ambient conditions.
Table 2. NGA502B Eccentric Roller Grip for Soft Materials
Parameter Specification
Application Tension test for rubber, plastic film and soft material
Maximum Force Capacity ≤ 500 N
Connection Type Upper Grip: Ø10 mm pin
Lower Grip: Ø10 mm pin
Overall Height (A) 97 mm
Grip Body Width (B) 4.9″ (125 mm)
Working Temperature Ambient
Grip Weight Upper Grip: 2.5 lbs (1.13 kg)
Lower Grip: 2.5 lbs (1.13 kg)
Compatible Specimen Width ≤ 30 mm

The third doubles the force to 1 kN and returns to the narrow 30 mm body, at the cost of height and weight. It closes the range for soft specimens that break past 500 N.

Model NGA103A

Eccentric Roller Tensile Grip

The NGA103A Eccentric Roller Grip is engineered for low-force tensile testing of soft and flexible materials such as rubber sheets, thin films, and other soft specimens. It features an eccentric roller mechanism that progressively increases clamping pressure in response to tensile loading, providing secure gripping without damaging delicate materials. With a compact body and moderate height, the NGA103A offers stable and repeatable performance for specimen widths up to 30 mm and loads up to 1 kN.

NextGen Tensile grip Eccentric roller NGA103A
  • Application: Tension tests for rubber, plastic film, and soft sheet materials.
  • Maximum Capacity: Up to 1 kN load.
  • Connection: Ø10 mm pin mount (upper and lower), suitable for universal testing machines.
  • Dimensions: Height 4.3″ (110 mm); Grip body width 30 mm; Overall width 60 mm.
  • Specimen Range: Accommodates specimens up to 30 mm wide.
  • Grip Weight: Approximately 3 lbs (1.34 kg) each for upper and lower grip.
  • Working Temperature: Ambient laboratory conditions.
Table 3. NGA103A Eccentric Roller Grip for Soft Materials
Parameter Specification
Application Tension test for rubber, plastic film and soft material
Maximum Force Capacity ≤ 1 kN
Connection Type Upper Grip: Ø10 mm pin
Lower Grip: Ø10 mm pin
Overall Height (A) 4.3″ (110 mm)
Grip Body Width (B) 30 mm
Overall Width (C) 60 mm
Working Temperature Ambient
Grip Weight Upper Grip: 3 lbs (1.34 kg)
Lower Grip: 3 lbs (1.34 kg)
Compatible Specimen Width ≤ 30 mm

Eccentric roller grips provide the right choice when testing materials where surface integrity and tension alignment are critical. Their cam-driven actuation and friction-lock design eliminate the need for manual tightening while keeping test repeatability and accuracy. Designed for full integration with NextGen Test’s NG-EML and SHM universal testing machines, these grips support a wide array of international test standards and are relied upon in material testing labs across North America. Contact our technical specialists to receive a quote or to upgrade your testing system with our high-performance eccentric roller grip series. 

For Laboratories

Need Additional Quality Control Equipment to Build Your Laboratory?

Gripping and fixturing is only one part of a complete quality control laboratory. NextGen can help you equip your entire lab with impact testers, notching and broaching systems, cooling chambers, tensile testers, hardness testers, specimen preparation equipment, and other supporting solutions, all coordinated as one complete project.

  • One partner to equip your complete laboratory
  • Installation, training, calibration
  • Support for the life of the equipment

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