Choose eccentric roller grips when you need to tensile test thin, flexible, or low-strength specimens that tend to slip, neck, or tear in standard serrated or wedge-style jaws. The eccentric roller design increases clamping force as the applied tensile load rises, helping the specimen stay captured without aggressive jaw pressure that can mark or initiate premature failure.

They are typically a strong fit for:

• Plastic films and packaging-style sheet materials where surface damage can skew results
• Rubber sheets and other soft, deformable specimens that can be crushed by conventional gripping
• Textiles and soft composites where consistent, low-force gripping is critical to repeatability

Grip selection still depends on your specimen geometry and expected force level, plus the mounting style on your UTM. Matching the correct roller-grip size to your specimen width and test load helps reduce slippage and edge tearing while keeping alignment stable.

If you want to confirm the right eccentric roller grip configuration for your specimen and test method, review the options under learn more or request a quote.