Proving Rings
Product Code : EL-STLE-10950
Proving Rings (code EL-STLE-10950) are steel rings used to measure force, made of special, carefully forged steel and fitted with a dial gauge and anvil on U-brackets that are clamped to the ring body by set screws. They are offered in fourteen capacities, from 25 kgf to 100 kgf (1 kN) at the low end through 5000 kgf (50 kN) to 3000 kN (300 tons).
Get a quote: use the Add To Cart enquiry button below, or send your quantity and delivery location through the contact page.
Specifications
| Parameter | Detail |
|---|---|
| Material | Special steel, carefully forged |
| Dial gauge and anvil | Mounted on U-brackets clamped to the ring body by set screws |
| Capacities | |
| 1 kN | 25 kgf to 100 kgf |
| 2 kN | 200 kgf |
| 2.5 kN | 250 kgf |
| 10 kN | 1000 kgf |
| 20 kN | 2000 kgf |
| 25 kN | 2500 kgf |
| 30 kN | 3000 kgf |
| 50 kN | 5000 kgf |
| 100 kN | 10 tons |
| 200 kN | 20 tons |
| 500 kN | 50 tons |
| 1000 kN | 100 tons |
| 2000 kN | 200 tons |
| 3000 kN | 300 tons |
| Supply | |
| Product code | EL-STLE-10950 |
| Manufacturer | Engineering Lab Equipment, Ambala, Haryana, India |
What Are the Proving Rings Used For?
A proving ring is an elastic steel ring that deflects very slightly, and in proportion to the load, when it is compressed or pulled across its diameter, so the dial reading between gauge and anvil gives the applied force once the ring's load-deflection relation is known. Rings are fitted in the load train of soil and materials testing frames, such as compression, CBR and shear apparatus, and are also used to check the load shown by testing machines. The operator picks a ring whose capacity suits the expected maximum load, from 25 kgf for light work up to 3000 kN, sets the dial to zero and notes readings as loading proceeds.
What to Specify When Ordering
- Quantity — the number of proving rings required.
- Capacity — the ring capacity needed, from 25 kgf to 100 kgf (1 kN) up to 3000 kN (300 tons).
Frequently Asked Questions
What capacities are available?
Capacities run from 25 kgf to 100 kgf (1 kN) through 200, 250, 1000, 2000, 2500, 3000 and 5000 kgf, then 100, 200, 500, 1000, 2000 and 3000 kN.
What are the rings made of?
The ring body is made of special steel that is carefully forged, and the dial gauge and anvil are mounted on brackets clamped to it.
How are the dial gauge and anvil attached?
Both are mounted on U-brackets, which are clamped to the ring body by set screws so that they move with the ring as it deflects.
How does a proving ring measure force?
Under load the ring deflects elastically across its diameter and the dial gauge measures this deflection; the reading is turned into force using the ring's known load-deflection relation.
How should a ring capacity be chosen?
Choose a ring whose capacity is above the highest load expected in the test, but not so large that the smaller loads give very small dial readings.
What should an export enquiry include?
For export, include the number of rings and their capacities, the destination as country plus port or city, the delivery terms wanted (FOB, CIF or similar), packing needs and any tender reference.
OEM Manufacturer
The Proving Rings are made by Engineering Lab Equipment (Engineering Labs Equipment Pvt Ltd) at its works at Plot No. 43, Industrial Park, Sector 2, Growth Center, Saha, District Ambala, Haryana, India. The company designs, makes and tests soil testing equipment for classification, compaction, density, shear and consolidation tests for engineering colleges, polytechnics, technical training institutes and research laboratories in India and overseas, and can build equipment to an institution's own requirements. Tender and OEM enquiries are handled through the Tenders/OEM page.
Related Soil Testing Equipment
- Load Ring Penetrometer — hand cone penetrometer with 1 kN load ring and 30° cone for soil bearing and compaction checks.
- Plate Bearing Test — load test set with 60, 45 and 30 cm M.S. bearing plates, 500 kN gauge and dial gauge.
- Direct Shear Test Apparatus — electrically driven shear box for 60 × 60 × 25 mm soil specimens with 12 strain rates.
- Unconfined Compression Tester (Motorized) — 5000 kg screw operated motorised load frame for unconfined compression of soil specimens.
See the full Soil Testing Lab Equipment range or all Civil Engineering Lab Equipment.
Request a Quote
For this and other soil testing lab equipment, schools and colleges can contact Engineering Lab Equipment, a manufacturer, supplier and exporter based in Ambala, India. To ask for a quotation, send the number of rings and the capacity of each and your delivery location through the contact page, or use the Add To Cart enquiry button on this page.
Last updated: October 2026
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