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Dial Display Impact Tester

Dial Display Impact Tester

Model: JB-300B, JB-500B

JB-B Series semi-automatic impact testing machine is used to determine the ability of metallic materials to resist impact under dynamic loads, in order to assess the material's performance under such conditions. This machine automatically swings the pendulum with the remaining energy after striking the specimen, and displays the scale on the dial. It has a simple structure, is easy to operate, highly efficient, safe and reliable, and is widely used in laboratories conducting impact tests in industries such as metallurgy, machinery, aerospace, and quality supervision.

It is designed and developed according to standard of ISO148, ASTM E23.

General Introduction

JB-B Series semi-automatic impact testing machine is used to determine the ability of metallic materials to resist impact under dynamic loads, in order to assess the material's performance under such conditions. This machine automatically swings the pendulum with the remaining energy after striking the specimen, and displays the scale on the dial. It has a simple structure, is easy to operate, highly efficient, safe and reliable, and is widely used in laboratories conducting impact tests in industries such as metallurgy, machinery, aerospace, and quality supervision.

It is designed and developed according to standard of ISO148, ASTM E23.


Computer Controlled Impact Testing Machine


According to ISO 148, standard specimen sizes are 10 mm × 10 mm × 55 mm. Subsize specimens are: 10 mm × 7.5 mm × 55 mm, 10 mm × 5 mm × 55 mm and 10 mm × 2.5 mm × 55mm.


ASTM E23 “Standard Test Methods for Notched Bar Impact Testing of Metallic Materials”

ISO 148 “Metallic materials -- Charpy pendulum impact test”

BS EN 10045 “Charpy impact test on metallic materials. Test method (V- and U-notches)” 

GOST 9454 “Metals. Method for testing the impact strength at the low, room and high temperature”

Key Features

  • Features

1), Pendulum rising, impact, free releasing is realized as automatically by remote control box;

2), Safety pin guaranties the impact action, standard protection shell to avoid any accident

3), Pendulum will automatically rising and ready for next impact action after specimen breakout

4), With two pendulums (big and small) and corresponding two Dial scales to read test result.

Main Technical Specification

ModelJB-300BJB-500BJB-750B
Display modeDial scale   display
Impact energy300J/150J500J/250J750J
Distance between   pendulum center to impact point750mm800mm750mm
Impact   velocity5.2m/s5.4m/s5.24 m/s
Pendulum   preparing angle150º
Span of   specimen seat40+0.2mm
Round   angle radius of GripsR1-1.5mm
Round   angle radius of striking edgeR2-2.5mm, R8±0.08mm
Angle of   impact knife30°
Specimen size10 (7.5, 5,   2.5)mm*10mm*55mm
Power supply3 phases 4 lines,   50Hz, 380V
086dhWeight550Kg850Kg2400Kg


Main Accessories

High Stiffness Frame1 set
Large pendulum 300J/500J1 set
Small pendulum 150J/250J1 set
Motor (on the loadframe)1 set
Rising pendulum driving device (on the loadframe)1 set
Automatic hitch pendulum device (on the loadframe)1 set
Safety pin (on the loadframe)1 set
Manual control box1 set
Supporting seat span adjusting device (L=40)1 set
Specimen center device ( L=40 V.U type)1 set
Safety cover1 set
Device to dismantle pendulum1 set
Terra anchor bolts (M16×300)1 set
Documents (Manual, packing list, certificate)


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Beijing United Test Co., Ltd.