Rock Strength Index Apparatus

Rock Strength Index Apparatus

This apparatus is used to determine the strength values of a rock specimen, both in the field and in the laboratory. 
It consists of a load frame for applying loads up to 100kN, a mounted hydraulic ram and a pressure gauge with 0.01kN precision for maximum load indication. 
An upper conical platen is fixed on the frame and a lower one on the jack piston. 
A graduated scale is fixed on the frame and indicates the specimen diameter. 
The pressure gauge indicator can be read in kN. 
Unit is portable and accepts core specimens of up to 4" (101.6mm) in diameter.

Maximum pressure of Jack: 100KN
Maximum range of force sensor: 100kN
Accuracy of force sensor: 0.01kN
Maximum distance between loading points: 105mm
Maximum allowable specimen width: 105mm
Spherical curvature of conical spherical end: r = 5mm
Cone top angle: 60 ?
Cone material: high quality steel, hard
Power supply: rechargeable battery