Whirling Of Shaft Apparatus Manufacturer,Supplier and Exporter in India
Product Code : EL-TOML-12051
Quick Answer: The Whirling of Shaft Apparatus is used to study the critical, or whirling, speed of a rotating shaft with supported ends (single self-aligning bearing) and fixed ends (double bearing). A 230 V DC, 1/16 H.P., 6500 RPM motor drives the test shaft through a flexible shaft.
Last updated: October 2026
Key Features
- Supported end conditions use end blocks with a single self-aligning bearing
- Fixed end conditions use end blocks with a double bearing
- Guards can be fixed at any position on the supporting bar frame
- Flexible shaft drives the test shaft from the motor
- Dimmer of 240 V, 2 amp, 50 cycles controls the speed of the rotating shaft
- Shaft and end fixing device can be replaced within a short time
Technical Specifications
| Specification | Value |
|---|---|
| Drive motor | 230 V DC, 1/16 H.P., 6500 RPM |
| Speed control | Dimmer, 240 V, 2 amp, 50 cycles |
| Coupling | Flexible shaft from the motor to the test shaft |
| End conditions | Supported (single self-aligning bearing) and fixed (double bearing) |
| End fixing | Ball bearing fixing ends, changeable for the end condition required |
| Guards | Can be fixed at any position on the supporting bar frame |
About This Product
A rotating shaft whirls sideways when its speed reaches a value at which its natural frequency matches the frequency of the forcing, which is resonance. This speed is called the critical, whirling or whipping speed. In the lab, students run test shafts with different end conditions, such as supported or fixed ends, and observe how the end condition changes the speed at which the shaft whirls.
Frequently Asked Questions
Q1. What is the critical speed of a shaft?
It is the speed at which resonance occurs, when the natural frequency of the system coincides with the external forcing frequency. It is also called the whirling speed or whipping speed.
Q2. Which end conditions can be tested on the Whirling of Shaft Apparatus?
Supported ends, using end blocks with a single self-aligning bearing, and fixed ends, using end blocks with a double bearing.
Related: Theory of Machines Lab, Universal Vibration Apparatus, Torsion Vibration Apparatus, Journal Bearing Apparatus.
For a quotation on the Whirling of Shaft Apparatus, contact School Lab Equipment India.