Eccentric Roller Grips for Thin and Flexible Specimens
Metal Testing Equipment
Optimized Clamping System for Tensile Testing of Sheet Materials and Soft Specimens
Eccentric roller grips from NextGen Test are designed to 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 ideal for 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.
NGA502A – Eccentric Roller Tensile Grip
The NGA502A Eccentric Roller Grip is designed 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, ensuring the specimen remains securely held without damaging its surface. This compact grip is ideal for delicate materials that are prone to tearing or slippage in standard fixtures, and it offers smooth operation under low-force testing conditions.
- 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.
Technical Specifications – 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 |
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 robust build and larger grip body, making it ideal for medium-sized test setups requiring consistent performance under low-force testing conditions.
- 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 125 mm.
- Specimen Range: Supports specimens up to 30 mm wide.
- Grip Weight: Approximately 1.13 kg each for upper and lower grip.
- Working Temperature: Ambient conditions.
Technical Specifications – 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) | 125 mm |
| Working Temperature | Ambient |
| Grip Weight | Upper Grip: 1.13 kg Lower Grip: 1.13 kg |
| Compatible Specimen Width | ≤ 30 mm |
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.
- 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 110 mm; Grip body width 30 mm; Overall width 60 mm.
- Specimen Range: Accommodates specimens up to 30 mm wide.
- Grip Weight: Approximately 1.34 kg each for upper and lower grip.
- Working Temperature: Ambient laboratory conditions.
Technical Specifications – 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) | 110 mm |
| Grip Body Width (B) | 30 mm |
| Overall Width (C) | 60 mm |
| Working Temperature | Ambient |
| Grip Weight | Upper Grip: 1.34 kg Lower Grip: 1.34 kg |
| Compatible Specimen Width | ≤ 30 mm |
Eccentric roller grips provide an ideal solution 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 ensuring 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.
Related Products
NG-EML Series A – Single Column Bench Top Universal Testing Machine (50 N – 5 kN)
NG-EML Series A is a compact single-column benchtop universal testing machine for low-force tensile, compression, and flexural testing. Covering 50 N to 5 kN capacity options, it is suited for rubber, plastics, adhesives, films, foams, wires, metals, composites, and consumer products. Its electromechanical frame, high-speed servo actuation, GenTest software, and standards support make it practical for R&D and routine QC.
NG-EML Series B – Dual Column Bench Top Universal Testing Machine (100 N – 10 kN)
NG-EML Series B is a dual-column benchtop electromechanical universal testing machine for precision testing from 100 N to 10 kN. Built for research and industrial labs, it supports tension, compression, flexural, and component testing of composites, high-strength metals, polymers, films, foams, and rubber. Its compact rigid frame, advanced control accuracy, and GenTest software help deliver repeatable results in limited lab space.
NG-EML Series C – Dual Column Bench Top and Floor Standing Universal Testing Machine (5 kN – 50 kN)
NG-EML Series C is a dual-column electromechanical universal testing machine available in bench-top and floor-standing formats from 5 kN to 50 kN. Built for tension, compression, flexural, shear, and peel testing, it combines Class 0.5 accuracy, a servo direct-drive system, high-rigidity frame, touchscreen control, and GenTest software to support precise testing of metals, composites, rubber, plastics, and polymers.
NG-EML Series D – Floor Standing Universal Testing Machine (50 kN – 1000 kN)
NG-EML Series D is a heavy-duty floor-standing electromechanical universal testing machine for high-capacity tensile, compression, and flexural testing. Available from 50 kN to 1000 kN, it is built for high-strength steels, advanced composites, alloys, and challenging research materials. Its rigid dual-column frame, servo direct-drive system, closed-loop control, safety protections, and GenTest software support stable, accurate testing.
Grips and Fixtures for NextGen Universal Testing Machines (UTMs)
Grips and fixtures for NextGen universal testing machines expand UTM capability across tensile, compression, flexural, shear, peel, puncture, and specialized material tests. Compatible with electromechanical and servo-hydraulic frames, the range includes wedge, pneumatic, self-tightening, side-action, compression, snubbing, and bending solutions. Interchangeable jaws, alignment-focused construction, and ASTM/ISO support help laboratories reduce slippage, improve repeatability, and configure testing around specific specimens.
GenTest – Advanced UTM Testing Software
GenTest is NextGen’s advanced UTM testing software for electromechanical universal testing machines, managing test setup, live control, data acquisition, calculations, curves, and reporting from one method-driven environment. Preconfigured ASTM, ISO, DIN, EN, and BS templates help operators load the correct control mode, speeds, gauge length, formulas, and result fields for tensile, compression, and flexural tests.