These small circular bollard grips are made from aluminium and are designed for testing delicate, flexible samples such as fine threads, wire and yarns, which may break easily when clamped. The sample is wrapped around the bollard and the free end is clamped tightly in place using a pair of friction washers and a thumbscrew. The bollard has a single 5mm (0.197") wide smooth groove to align the sample centrally and has a diamter of 20mm (0.79") around which it can be wound.
100N (10kgf, 22lbf)
Used for tensile testing of: