Critical Speed Investigation Apparatus

Critical Speed Investigation Apparatus  

Technical description of Critical Speed Investigation Apparatus  

This benchtop unit is used to show the resonance and critical bending speed on rotating shafts. The construction of the rotor of a thin, flexible shaft and rigid weights facilitates the theoretical comprehension. The rotor is held on the base frame with pivoting bearings. The weights and bearings can be placed at any location along the shaft and attached securely with quick-acting clamps. It is driven by a flexible coupling. Two motor speeds can be fine-adjusted and preset with ten-speed potentiometers. They are controlled electronically and displayed digitally. It is possible to switch speeds during the experiment as desired. A transparent protective hood covers the rotating parts. A set of electrical vibration sensors with clamping set is also available.

Specification of Critical Speed Investigation Apparatus  

• Benchtop experiment for investigating critical bending speeds on rotors
• Max. Two resonance speeds, illustration of self-centering
• Rotor shaft made of high-strength steel
• Two weights for attachment at any point
• Two pendulum ball bearings for positioning at any point for support of the rotor shaft
• Elec. Motor 0.25kw, controlled electronically
• Adjustable speed, two speeds (can be preset), can be switched at any time, setting with two 10-speed potentiometers, digital display
• Locking catch on rotor
• Protective hood made of transparent plastic

 Technical data of Critical Speed Investigation Apparatus  

• Speed range: 300...3000rpm
• Motor output: 0.25kw
• Experimental rotor shaft: dxl 6x500mm, steel
• Weights: d=80mm, 1kg, steel
• Min. Spacing of weights: 50mm
• Support: pendulum ball bearing
• Adjustable bearing spacing: 300...470mm
• Catch play: 3mm

Dimensions and weight of Critical Speed Investigation Apparatus  

• L x w x h: 1150 x 375 x 355 mm
• Weight: approx. 49 kg