Rubber Hardness Tester Manufacturer,Supplier and Exporter in India
Product Code : EL-RTE-13240
Quick Answer: The Rubber Hardness Tester measures the hardness of rubber from the depth to which a ball indenter on a plunger penetrates the sample, read on a dial gauge, with the plunger weight as the minor force and a brass weight as the major force.
Last updated: October 2026
Key Features
- Plunger with a ball type indenter of specified dimension on its lower side
- Electrically conductive tip on the upper side of the plunger
- Weight of the plunger and its fitting is the minor force
- Large brass weight is the major force, of specified weight
- Dial gauge measures the penetration depth of the indenter into the rubber
- Electrically operated buzzer under the cover gently vibrates the apparatus to overcome slight friction
Technical Specifications
| Specification | Value |
|---|---|
| Indenter | Ball type, of specified dimension, on the lower side of the plunger |
| Minor force | Weight of the plunger and the fitting attached to it |
| Major force | Brass weight of specified weight |
| Depth measurement | Dial gauge for penetration depth of the indenter into the rubber |
| Vibration | Electrically operated buzzer under the instrument cover |
| Finish | NC based paint and bright chrome plating |
About This Product
The hardness of rubber is judged by how far a small ball sinks into it under a known load. A minor force is applied first to seat the indenter, then a major force is added, and the extra penetration is read on the dial gauge. Softer rubber lets the ball sink further. The buzzer gently vibrates the instrument to overcome slight friction, so that the reading settles properly.
Frequently Asked Questions
Q1. How does the Rubber Hardness Tester measure hardness?
A dial gauge measures the penetration depth of the ball type indenter into the rubber, under a minor force from the plunger weight and a major force from a brass weight.
Q2. What is the buzzer for?
An electrically operated buzzer, mounted under the cover, gently vibrates the apparatus to overcome the slight friction.
Related: Rubber Testing Equipment, Specific Gravity Tester, Din Abrasion Tester, Impact Resilience Tester, Compression Set.
For a quotation on the Rubber Hardness Tester, contact School Lab Equipment India.