Slip Creep Measurement Apparatus
Product Code : EL-TOML-11028
Quick answer: The slip creep measurement apparatus is used to measure slip and creep in a flat belt drive and the coefficient of friction between belt and pulley. A 1 HP DC motor drives equal pulleys up to 1500 RPM, a brake drum with spring balance loads the drive, and a two-channel RPM indicator compares the pulley speeds. Lab Exports manufactures it in Delhi for engineering colleges, polytechnics and TVET institutes.
Specifications
| Component | Specification |
|---|---|
| Drive motor | 1 HP DC motor, variable speed up to 1500 RPM |
| Pulleys | Driving and driven pulleys of equal diameter |
| Loading | Brake drum with spring balance |
| Belts | Flat belts in fabric, canvas and rubber |
| Tensioning | Belt tightening arrangement for initial tension |
| Speed control | Speed controller unit |
| Speed measurement | Two-channel digital RPM indicator |
| Additional instrument | Stroboscope for speed checks |
| Floor space | 1.5 m x 1.5 m |
How the slip and creep experiment is done
A belt drive transmits power by friction, so the driven pulley never quite keeps up with the driver. Part of the loss is slip, where the belt slides bodily on the pulley when the load is too high for the friction available. The rest is creep: the belt is stretched more on the tight side than on the slack side, and as each part of it passes round a pulley it extends or contracts slightly, so the belt surface creeps relative to the rim.
With equal pulleys, any difference between the two readings on the RPM indicator is due to slip and creep, and the percentage is (N1 - N2) / N1 x 100. The belt friction relation T1 / T2 = e^(mu x theta), where theta is the angle of lap, links the tension ratio to the coefficient of friction. Changing the belt shows how fabric, canvas and rubber differ in grip and creep.
- Fit the belt under test and set the initial tension with the tightening arrangement.
- Start the motor and set the speed with the speed controller.
- Apply load on the brake drum in steps, reading the spring balance.
- Record the speeds of both pulleys on the two-channel RPM indicator, checking with the stroboscope.
- Repeat with the other belt materials and plot slip against load.
Key features
- 1 HP DC motor with speed controller, variable up to 1500 RPM
- Equal driving and driven pulleys, so any speed difference shows slip and creep directly
- Fabric, canvas and rubber flat belts for comparing materials
- Brake drum and spring balance for applying and measuring load
- Two-channel digital RPM indicator, with a stroboscope for cross-checking
- Belt tightening arrangement to vary initial tension
Documentation and supply
Installation instructions and a manual are supplied with the apparatus. Most Lab Exports products carry a one-year manufacturer warranty.
Lab Exports manufactures the slip creep apparatus at its works in Laxmi Nagar, Delhi, and supplies it to engineering colleges, polytechnics and TVET institutes in India and 60+ countries, handling the export documents for each shipment. More about the company is on the About Lab Exports page.
Related Theory of Machine Lab products
- Coriolis Component of Acceleration (EL-TOML-11027)
- Epicyclic Gear Train Holding Torque Apparatus (EL-TOML-11029)
- Interference Undercutting (EL-TOML-11026)
- Journal Bearing Apparatus (EL-TOML-11030)
- Generation of Involute Gear Tooth Profile (EL-TOML-11025)
- Dead Weight Pressure Gauge Tester (EL-TOML-11031)
The full range is in the Theory of Machine Lab section of the Engineering Lab range.
Frequently asked questions
Which belt materials are supplied with the slip creep apparatus?
Flat belts in fabric, canvas and rubber, for comparing slip, creep and friction.
How is the load applied on the belt drive?
Through a brake drum fitted with a spring balance on the driven pulley shaft.
What is the price of the slip creep apparatus?
Prices are not published on the website. Add the slip creep apparatus to the Enquiry Cart with the Add To Cart button on this page, or email [email protected] with the house code EL-TOML-11028 and the quantity, to receive a quotation.
Does Lab Exports manufacture the slip creep apparatus?
Yes. Lab Exports manufactures the slip creep apparatus at its works at 11/315, Lalita Park, Laxmi Nagar, Delhi 110092, under house code EL-TOML-11028.
Request a quote
Email [email protected] with the house code EL-TOML-11028 and the quantity, or add the slip creep apparatus to the Enquiry Cart with the Add To Cart button on this page. Tender buyers can also see the Tenders and OEM page.
