Rated to 2.5 kN (500 lbf), Instru-Met’s Capstan Grips are engineered for high-accuracy tensile testing of twisted cords, braided lines, elastic tapes, and other flexible specimens. Featuring a self-tightening spiral groove design, these grips apply even stress distribution, minimize slippage, and eliminate jaw breaks — delivering consistent, repeatable results under demanding test conditions.
Key Features
- 500 lbf (2.5 kN) Capacity — Ideal for tension testing cords, yarns, and tapes
- Self-tightening Capstan Design — Locks tighter as force increases
- 2.5 Full Turns of Grooved Spiral — Evenly distributes stress for accurate results
- Wide Sample Compatibility — Test diameters from 0.02 to 0.125 inches (0.5 – 3.2 mm)
- High Temperature Range — Operates from -100°F to 600°F (-73°C to 316°C)
- Fast, Repeatable Setup — Simple wrap, clamp, and test workflow
- ½ Inch Clevis Pin Mount — Compatible with most standard testing machines
- Optional Smooth Capstans — For delicate or non-abrasive materials
Applications
Tensile testing of braided cords, textile yarns, wire insulation, elastic bands, and composite fibers. Ideal for lab-quality material testing, quality control, and production validation.
Built for Reliability. Trusted by Professionals.
The grips serve research laboratories, QA environments, and production floors for testing soft, flexible, or deformable specimens.