Journal Bearing Demonstration
Product Code : EL-TOMP-11399
Quick Answer: The Journal Bearing Demonstration is a floor-standing apparatus with a plain steel shaft running in a clear acrylic shell, driven directly by an electric motor. The bearing has 16 pressure tappings connected to a rear manometer panel that shows the oil pressure head at each point.
Last updated: October 2026
Key Features
- Plain steel shaft in a clear acrylic shell, directly driven by an electric motor
- Control unit sets motor speed in both directions; display shows motor speed
- Large clearance so the oil film in the bearing can be seen
- 12 equi-spaced pressure tappings around the circumference and four more along the upper side on a vertical radial plane
- Flexible plastic tubes link all 16 tappings to the rear manometer panel
- Bearing freely supported on the motor shaft and sealed with a rubber diaphragm; adjustable oil reservoir feeds both ends; oil supplied
Technical Specifications
| Specification | Value |
|---|---|
| Shaft | Plain steel |
| Bearing shell | Clear acrylic |
| Pressure tappings | 12 around the circumference plus four along the length, 16 in all |
| Pressure display | Rear manometer panel |
| Drive | Electric motor, direct drive, both directions |
| Oil | Container supplied; adjustable reservoir |
About This Product
Watching the oil through the clear shell while reading the manometers lets students see how a journal bearing builds hydrodynamic pressure as speed rises. Comparing the pressure pattern around and along the bearing, and in both directions of rotation, helps explain how the oil film carries the load. Educational Instrument can arrange export supply of the Journal Bearing Demonstration to Timor-Leste, Poland, Georgia, Panama and Australia.
Frequently Asked Questions
How many pressure tappings does the Journal Bearing Demonstration have?
16 in all: 12 equi-spaced around the circumference and four more along the upper side on a vertical radial plane, each connected to the rear manometer panel.
Is oil supplied with the apparatus?
Yes. A container of suitable oil is supplied with the equipment.
Related: Theory of Machines Products and Air Bearing Apparatus.
For a quotation on the Journal Bearing Demonstration, contact Educational Instrument.
