Rajco Compression Proving Ring

Product Details:

Proving Rings are used for load meassurements and are used in the outfits of a number of soil/cement & bitumen testing equipments like Direct Shear Apparatus. Triaxial

Shear test Apparatus, CBR Test. Unconfined Test, Marshall Test etc. They are made out of special steel carefully forged to give maximum strength and machined to give highest sensitivity combined with stability to ensure long life and accuracy
When compressive or tensile load is applied within the elastic range, the proving rings get temporarily deformed.
This deformation is measured by a sensitive dial gauge fixed co-axially at the centre of the proving ring
The dial readings thus obtained versus load applied enable the operator to findout unknown load,, just by noting the dial gauge reading for the unknown load.
The proving rings have hogh elasticity and on removing load they regain the orginal shape provided they are loaded in their elastic limits.
The dial gauge and plunger anvil are mounted on brackets clamped to the ring body. The dial gauge is held perfectly rigid without the remotest chance of shifting due to inadvertent shocks or pressure exerted on it. The dial gauge plunger rests on an adjustable anvil.
Proving Rings from 50 kg to, 1,00,000 kg capacity provided with 1/2 inch B.S.F. female threads. Loading bossess and a loading ball nipple and steel ball are supplied with each rings
Rings of capacity over 25000kgf (or 25 tonnes) are not thus threaded.
Each ring is individually calibrated and supplied with works calibration charts and a carrying case.
Calibration charts from Standard Laboratories for the proving rings ordered are also available at extra cost. All Proving rings are Integrall type. Integral type compressicve Proving Rings of different capacities from 50 kgf to 200000 kgf are available