The RH75-A Concrete Rebound Hammer is a reliable mechanical Schmidt Hammer designed for fast, non-destructive evaluation of concrete compressive strength and surface hardness. Built for engineers, contractors, and inspectors, it delivers stable, repeatable results for on-site quality control and structural assessment.
Factory calibrated with calibration certificate included. Suitable for use in NATA accredited laboratories
Designed in accordance with ASTM C805, EN 12504-2, ISO/DIS 8045, and JGJ/T 23, the RH75-A is suitable for routine concrete testing in demanding field environments.
Model
RH75-A
Standard impact energy
0.735 J
Pointer length
20.0 +/- 0.2 mm
Friction of pointer
0.5 +/- 0.1 N
Spherical radius of bouncing rod
25 +/- 1.0 mm
Elastic tension spring stiffness
261.0 +/- 12.0 N/m
Operating length of elastic tension spring
61.5 +/- 0.3 mm
Bounce hammer take-off position
Scale "0-1"
Calibration value on testing anvil
74 +/- 2
Standard
ASTM C 805 USA
ISO/DIS 8045 International
EN 12 504-2 Europe
BS 1881, part 202 Great Britain
DIN 1048, part 2 Germany
NFP 18-417 France
B 15-225 Belgium
ENV 206 Europe
JGJ/T 23-2011 China
Technical advantages
High-quality spring assembly improves fatigue resistance for repeated testing cycles.
Optimized pointer mechanism helps maintain smoother movement and stable indication.
Wear-resistant metal housing supports long-term use in demanding site conditions.
Precision-machined internal structure contributes to consistent rebound performance.
