AXIAL TORSION WEDGE GRIPS

The application of both axial and torsional forces simultaneously under fatigue conditions requires special grip design. These grips utilize a wedge action gripping technique that makes them suitable for flat specimens as well as cylindrical.

Principle of Operation

Major grip components are the grip driver, wedge grip head, grip attachment flange, and jaw faces. The grip driver applies the clamping force to the grip head by moving it relative to the jaw faces, which causes the jaw faces to clamp the specimen. The grip drive also incorporates three sets of anti-rotation sliders that transfer any applied torque from the actuator to the grip and specimen. The jaw faces are either serrated or Vee-grooved to accommodate flat or cylindrical specimens.

Application Range

• Axial torsion tests on flat or cylindrical specimens

AXIAL/TORSION HYDRAULIC WEDGE GRIPS

Suitable for model 8874; requires: 207-bar (3,000 psi) hydraulic power supply and 2718-111 grip control manifold

Items For Use With 8260c

Catalog Number Description

2703-801 Jaw faces for flats (serrated, 0 to 6.3 mm)

2703-802 Jaw faces for flats (serrated, 6.3 mm to 12.7 mm)

2703-803 Jaw faces for rounds (Vee-serrated, 3.0 mm to 7.8 mm)

2703-804 Jaw faces for rounds (Vee-serrated, 7.1 mm to 12.7 mm)

2703-807 Jaw faces for rounds (Vee-serrated, 12.4 mm to 18.0 mm)

Notes:

1. 2703-807 rated to 10 kN Axial force and 100 Nm torsional capacity.