Bar for Bar Breaking Apparatus Manufacturer,Supplier and Exporter in India
Product Code : EL-SLE-4801
Jlab Export is a leading Bar for Bar Breaking Apparatus Manufacturer,and suppliers in India
Bar for Bar Breaking Apparatus (code EL-SLE-4801) is a pack of steel bars for the bar breaking apparatus, the physics demonstration that shows how strongly a metal bar pushes or pulls when it expands on heating and contracts on cooling. The listing is for school and college labs that run the experiment; the number of bars per pack is confirmed in the quotation. It is made by Jain Laboratory Instruments Pvt Ltd (JLab) at its works in Ambala, India.
Specifications
| Parameter | Detail |
|---|---|
| Item | Bars for a bar breaking apparatus |
| Material | Steel (as listed) |
| Purpose | Demonstrating the principles of thermal expansion and contraction |
| This listing covers | The bars only; the bar breaking apparatus (frame, bar and tensioning nut) is a separate catalogue item |
| Quality check | Each pack is visually inspected before dispatch |
| Pack quantity | Pack of bars |
| Minimum order quantity | 10 units |
| Dispatch time | Usually 7–10 working days |
| Product code | EL-SLE-4801 |
| Manufacturer | Jain Laboratory Instruments Pvt Ltd (JLab) — OEM |
| Country of origin | India (made in Ambala, Haryana) |
What Are Bars for a Bar Breaking Apparatus Used For?
In the bar-breaking experiment a stout bar is heated and tightened in a rigid frame, with a breaking bar passed through the hole at one end. As the hot bar cools it contracts, and the pull it exerts is large enough to snap the breaking bar — a vivid way to show that the force produced by thermal contraction (or expansion) is far larger than students expect. Every run uses up a breaking bar, which is why labs keep packs of spares. The demonstration supports the thermal-stress topic in class 11 physics (thermal properties of matter) and explains why railway tracks and bridges are built with expansion gaps. Let the apparatus cool before handling it, and keep students back from the frame when the bar snaps.
Frequently Asked Questions
What are these bars used for?
They are the bars used in the bar breaking apparatus to show the force of thermal expansion and contraction. A bar is broken in each demonstration, so a pack keeps the experiment running across several classes.
How many bars are in a pack?
The listing describes a pack of bars but does not give the number. JLab confirms the count per pack in the quotation, so state how many demonstrations you plan to run.
What are the bars made of?
This listing describes them as steel. JLab’s Bar Breaking Apparatus listing names the breaking bars supplied with that apparatus as cast iron, so confirm the material with JLab if your apparatus or lesson plan calls for a particular one.
Will the bars fit the bar breaking apparatus I already have?
Send the make of your apparatus, or the size of the hole the breaking bar passes through, with your enquiry so JLab can confirm the fit. The apparatus itself is a separate item, linked below.
Who manufactures these bars?
Jain Laboratory Instruments Pvt Ltd (JLab) makes them in Ambala, Haryana, India, and supplies them direct to schools, colleges and dealers.
OEM Manufacturer
JLab is the trading name of Jain Laboratory Instruments Pvt Ltd, a physics and school lab equipment manufacturer in India, incorporated in 2017 and based on Hargolal Road, Ambala, Haryana. The bars are produced at JLab’s own works, not bought in from a trader, so schools, colleges, dealers and importers order them factory-direct alongside the apparatus they fit, each pack is visually inspected before dispatch, and repeat orders of spares come straight from the manufacturer. JLab exports worldwide and ships to buyers in every region, for example DR Congo in Central Africa, the Philippines in Southeast Asia, Chile in South America, Albania in Southern Europe and Zimbabwe in East Africa.
Thermal Expansion Apparatus
- Bar Breaking Apparatus — the frame, stout bar and tensioning nut these bars are used with; listed with a pack of breaking bars.
- Ball and Ring Apparatus — a brass ball and ring for showing that a solid expands on heating.
- Linear Expansion Apparatus — a steam-heated apparatus for finding the coefficient of linear expansion of metals.
- Expansion of Liquid Apparatus — capillary tubes that show different liquids expanding by different amounts.
- Bimetallic Strips with a Wooden Handle — strips that bend on heating because their two metals expand unequally.
See the full School Lab Equipment range.
Request a Quote
Quotes come direct from the manufacturer. Use the Add To Cart enquiry button on this page, or send the number of packs (minimum 10 units), the apparatus the bars are for, and your delivery location through the contact page.
Last updated: 4 October 2026
