Mechanical vibration testing machines can be divided into two types: unbalanced weight type and cam type. The unbalanced weight type excites the vibrating table surface by the centrifugal force generated when the unbalanced weight rotates, and the exciting force is proportional to the square of the unbalanced torque and the rotational speed. The vibration tester can generate sinusoidal vibration, and has a simple structure and low cost, but can only work in a frequency range of about 5 Hz to 100 Hz, the maximum displacement is 6 mm peak-峤 value, the maximum acceleration is about 10 g, and random vibration cannot be performed. The displacement of the moving part of the vibration tester depends on the eccentricity of the cam and the arm length of the crankshaft, and the exciting force varies with the mass of the moving part. Such a vibrating table can achieve a large displacement, such as 100 mm, in a low frequency range when the exciting force is large. However, the vibration tester operating frequency is limited to low frequency, and the upper limit frequency is about 20 Hz. The maximum acceleration is about 3g, and the acceleration waveform is very distorted. Mechanical vibration testing machines will become smaller and smaller in the future due to their performance limitations. Active Pharmaceutical Ingredients Product categories of Active Pharmaceutical Ingredients, we are specialized manufacturer and distributor from China, we have the perfect after-sales service and technical support. Look forward to your cooperation! SINOCHEM PHARMACEUTICAL CO., LTD , https://www.sinochemnutrition.com