Roll Hardness Tester

A roll hardness tester is a device to measure the roll hardness, hardness profile and hardness variation of paper rolls. Roll hardness is one of the most important parameters when deciding whether a paper roll is good or bad. A roll that is wound too softly can go out of round when handled. A roll that is wound too hard, on the other hand, can crack during transportation.[1] These variations are difficult to detect. Above all, it is typically the variation in hardness across a given roll that relates most directly to such converting issues with soft edges being perhaps the biggest contributor.

If you have any questions about the products on this website, please contact us at or +49 (0) 2903 976 990 (Mo. - Fr. von 8.00 bis 17.00 Uhr).

Roll Hardness Test Instrument PCE-HT-225A

399,90 €

Price excl. VAT &. delivery

PCE-HT-225A is a heavy-duty roll hardness tester or concrete test hammer, also called a paper roll rebound hammer or Swiss hammer, used to measure surface hardness and material compression strength. Suitable for use with rolled paper, concrete, rock and building materials, this rugged, manufacturer-calibrated rebound hammer is both easy to use and built to last.

Test range: 10 … 60 MPa or 100 … 600 kg/cm² or 1450 … 8702 psi
Impact energy: 2.207 J or N-m / 0.225 kgf.m / 1.6278 ft-lb or Type N
Impact stroke: 75 ± 0.3 mm / 2.95 ± 0.012 in
Radius of spherical tip: 25 ± 1 mm / 0.99 ± 0.04 in
kg/cm², psi, and MPa conversion tables
Optional test anvil to verify accuracy listed under accessories

Roll Hardness Tester PCE-HT 224E-ICA incl. ISO-Calibration Certificate

959,90 €

Price excl. VAT &. delivery

The Roll Hardness Tester is a measuring tool for testing the strength of concrete. The Roll Hardness Tester measures strength according to the Schmidt principle. According to this measurement method, the quality of concrete can be measured with the Hardness Tester. The Hardness Tester is also suitable for measuring hardness of rolled paper. The Hardness Tester displays measurements Rebound Value and can display force in PSI, MPa, kgF/cm², or N/mm².

Measuring range: 10 … 100 N/mm² / 1500 … 8500 PSI (lbs / in²)
Impact energy: 2.207 J or N-m / 0.225 kgf.m / 1.6278 ft-lb or Type N
Digital display of results
USB interface for connection to a PC
Data storage
Rechargeable battery
incl. ISO-Calibration Certificate