Journal Bearing Apparatus
Product Code : EL-TOML-11030
Quick Answer: Journal Bearing Apparatus is a set-up for observing the pressure profile around a journal bearing, with a 50 mm nominal journal running in a 55 mm bearing driven by a 3,000 RPM D.C. shunt motor. Sixteen pressure tappings feed a 16 tube manometer so all readings can be seen at once.
Last updated: October 2026
Key Features
- Journal 50 mm dia (nominal) in a bearing of 55 mm dia
- D.C. shunt motor, 3,000 RPM, speed controlled from the control panel and reversible
- Twelve equi-spaced pressure tappings around the circumference and four along the axis
- 16 tube manometer connected by light flexible plastic tubes
- Bearing loaded with 4 adjustable weights on an arm beneath it
Technical Specifications
| Specification | Value |
|---|---|
| Journal | 50 mm dia (nominal) |
| Bearing | 55 mm dia |
| Weights | 4 adjustable weights |
| Motor | D.C. shunt motor, 3,000 RPM |
| Control panel | For speed control of motor |
| Manometer panel | 16 tube manometer |
| Electric connections | A.C. single phase, 230 V, with earthing |
About This Product
A plain steel shaft encased in the bearing is driven directly by the motor, which can run in both directions, while the bearing is freely supported on the shaft and sealed at the motor end. Weights on the arm beneath load the bearing, and the manometer shows the pressure head at all sixteen tapping points at the same time. From these readings, THEORY OF MACHINE LAB students plot Cartesian and polar pressure curves and the theoretical Sommerfeld curves.
Frequently Asked Questions
Q1. How many pressure points are measured?
Sixteen: twelve equi-spaced tappings around the circumference of the bearing and four along its axis, all connected to the 16 tube manometer so they can be read at the same time.
Q2. Can the motor run in both directions?
Yes. The D.C. shunt motor is speed-controlled from the control unit and can be run in both directions.
Q3. What experiments does it support?
Observation of the pressure profile under different conditions of load and speed, plotting Cartesian and polar pressure curves, and plotting the theoretical Sommerfeld curves.
Lab Equipments Ambala exports to 80+ countries, including Mozambique, Argentina and Kazakhstan.
To order the Journal Bearing Apparatus or ask a question about it, send an enquiry to Lab Equipments Ambala.
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