Proving Rings

Proving Rings

Proving Rings / Load Rings

LABAIDS® Proving rings are used for load measurements and are used in outfits of several Soil / Cement & Bitumen Testing Equipment like Direct Share Test Apparatus, Triaxial Shear Test Apparatus, CBR Test, Unconfined Test, Marshall Test etc. They are made from 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 (analog / digital) fixed co-axially at the center of proving ring.

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The dial gauge readings thus obtained versus load applied enable the operator to find out unknown load, just by noting the dial gauge reading for unknown load. The proving rings have high elasticity and on removing load they regain their original shape provided they are loaded in their elastic limits.

A Dial gauge and plunger anvil is mounted on brackets clamped to the ring body. The dial gauge is held perfectly rigid without the remote chance of shifting due to inadvertent shocks or pressures 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 bosses and a loading ball nipple and steel ball are supplied with each ring. Rings of capacity over 25000kg (or 25 Tonnes) are not thus threaded.

Each ring is individually calibrated and supplied with a works calibration chart and a carrying case. Calibration charts from Standard Laboratories for the Proving Rings ordered are also available at extra cost.

Dial gauges are also fixed at extra cost depending on the type of dial gauge (analog / digital) that a user wants. All Proving Rings are Integral Type.

Integral type Compressive Proving Rings of different capacities from 0.25 KN (25kgf) to 3000KN (300000kgf) are available with an option of analog or digital dial gauges.

Please Contact Us for your requirements of proving rings / load rings.

S.No. Capacity (KN) Capacity (Kgf)
1 0.25 kN 25 kgf
2 0.5 kN 50 kgf
3 1 kN 100 kgf
4 2 kN 200 kgf
5 2.5 kN 250 kgf
6 4 kN 400 kgf
7 5 kN 500 kgf
8 10 kN 1,000 kgf
9 15 kN 1,500 kgf
10 20 kN 2,000 kgf
11 25 kN 2,500 kgf
12 30 kN 3,000 kgf
13 40 kN 4,000 kgf
14 50 kN 5,000 kgf
15 100 kN 10,000 kgf
16 200 kN 20,000 kgf
17 300 kN 30,000 kgf
18 500 kN 50,000 kgf
19 1000 kN 100,000 kgf
20 2000 kN 200,000 kgf
21 3000 kN 300,000 kgf