Journal Bearing Apparatus
Product Code : EL-TOML-11030
The Journal Bearing Apparatus from Lab Exports is a precision engineering lab setup that lets students directly observe the pressure distribution developed within a hydrodynamic journal bearing under different loads and speeds. A plain steel journal is driven inside its bearing by a small electric motor, with the resulting oil film pressure measured simultaneously at multiple points around and along the bearing.
Specifications
| Journal Diameter | 50 mm (nominal) |
| Bearing Diameter | 55 mm |
| Loading | 4 adjustable weights via a supporting arm |
| Drive Motor | D.C. shunt motor, up to 3,000 RPM |
| Speed Control | Control panel with precise speed regulation, bidirectional operation |
| Pressure Measurement | 16-tube manometer panel |
| Pressure Tappings | 12 equi-spaced tappings around the bearing circumference plus 4 tappings along the axis |
Key Features
- Plain steel journal directly driven by a small electric motor, freely supported and sealed at the motor end
- Bearing fitted with 12 circumferential and 4 axial pressure tappings, giving 16 simultaneous observation points
- All tappings connected via flexible plastic tubing to a 16-tube manometer panel for real-time pressure profile reading
- Adjustable weights on a supporting arm allow bearing loading to be varied
- Motor speed can be precisely controlled and run in both directions
- Demonstrates hydrodynamic lubrication theory with direct, visual pressure-profile results
Applications
The Journal Bearing Apparatus is used in mechanical engineering laboratories to study hydrodynamic lubrication, observe how oil film pressure is distributed around a rotating journal, and analyse how bearing load and shaft speed affect the pressure profile. It supports experiments correlating theoretical bearing design equations with measured pressure distribution data.
Why Choose Lab Exports
Lab Exports is a trusted manufacturer and exporter of engineering lab equipment including a complete range of Theory of Machine Lab apparatus for engineering colleges and technical institutes, serving as a reliable engineering lab equipment India source for buyers in Cameroon (Central Africa), Nepal (South Asia) and Samoa (Pacific). Every unit is built for classroom durability, measurement accuracy and long-term reliability, backed by responsive after-sales support.
Related Products in Theory of Machine Lab
- Static Dynamic Balancing Apparatus
- Motorised Gyroscope Apparatus
- Cam Analysis Apparatus
- Vibration Lab Complete 11 Experiment
- Generation Of Involute Gear Tooth Profile
Frequently Asked Questions
Q1. What does the Journal Bearing Apparatus demonstrate?
It demonstrates the hydrodynamic oil film pressure distribution developed inside a journal bearing under different loads and shaft speeds.
Q2. How many pressure measurement points does it have?
The bearing has 16 pressure tappings in total, 12 spaced around its circumference and 4 along its axis, all connected to a manometer panel.
Q3. What are the journal and bearing dimensions?
The journal is 50 mm nominal diameter and the bearing is 55 mm diameter.
Q4. How is the bearing load applied?
Load is applied using 4 adjustable weights on a supporting arm connected to the bearing.
Q5. Can the apparatus run at different speeds and directions?
Yes, the D.C. shunt motor runs up to 3,000 RPM and can be operated in both directions with precise speed control.
Request a Quote
For pricing, specifications or export documentation on the Journal Bearing Apparatus, contact Lab Exports for a detailed quotation.
