Model JB-300B semi-automatic pendulum impact testing machine is mainly used to determine the anti-impact capability of ferrous metal materials with high toughness, especially for steel and iron and their alloy, under dynamic load.

This machine can be operated semi-automatically. The pendulum of the machine can be raised or released automatically. Be applicable for continuing testing in different kinds of laboratories and other metallurgy industrial manufactories.  

This machine is designed and developed according to national standard GB/T3808-2002 (ISO148-1998) " Pendulum Impact Testing Machine"
　
Technical specifications
Impact energy: 300J(Larger hammer) 150J(smaller hammer)
Impacting speed: ≈ 5.2m/s
Raising angle: 135°
Standard span: 40mm
Round angle radius of Grips: R1.0～1.5mm
Round angle radius of striking edge: R2.0～2.5mm
Swing rod length: 750mm
Size of standard specimen: 10 × 10 × 55mm
Power supply: 380V, 50Hz, three phases, 250W 
Dimensions: 2124 × 600 × 1340 mm
Weight: 450Kg