Pulleys with Aluminum Borders and Hook Manufacturer,Supplier and Exporter in India
Product Code : EL-SLE-4692
Jlab Export is a leading Pulleys with Aluminum Borders and Hook Manufacturer,and suppliers in India
Pulleys with Aluminum Borders and Hook (code EL-SLE-4692) are pulley blocks for physics experiments in school and college labs, offered as single, double or triple pulleys in parallel or series arrangements. Each has aluminium borders, plastic wheels and a hook for hanging it from a stand, so students can build fixed, movable and block-and-tackle systems. They are made by Jain Laboratory Instruments Pvt Ltd (JLab) at its works in Ambala, India.
Specifications
| Parameter | Detail |
|---|---|
| Versions | Single, double or triple pulley |
| Arrangement | Parallel or series (in line), as listed |
| Frame | Aluminium borders |
| Wheels | Plastic |
| Wheel diameter | About 2 in (approx. 50 mm); written as 2’ in the original listing — confirm with JLab when ordering |
| Fitting | Hook |
| Build | Made with precision for physics experiments |
| Quality check | Each pulley is visually inspected before dispatch |
| Pack quantity | Each (sold individually) |
| Minimum order quantity | 10 units |
| Dispatch time | Usually 7–10 working days |
| Product code | EL-SLE-4692 |
| Manufacturer | Jain Laboratory Instruments Pvt Ltd (JLab) — OEM |
| Country of origin | India (made in Ambala, Haryana) |
How Do They Compare with Other JLab Pulleys?
| Model | Wheels (as listed) | Arrangement and mounting |
|---|---|---|
| These pulleys (EL-SLE-4692) | Plastic, about 2 in | Single, double or triple; parallel or series; aluminium borders; hook |
| Aluminium Pulley Single JLab | Aluminium, deep V-groove, 2 inch (50 mm) | Single; metal bracket with hooks on both ends |
| Aluminum Pulley Double Parallel JLab | Aluminium, both 2 inch (50 mm) | Two side by side; metal bracket with hooks on both ends |
| Aluminum Pulley Double Tandem JLab | Aluminium, 2 inch (50 mm) and 1.55 inch (40 mm) | Two in tandem; metal bracket with hooks on both ends |
| Aluminium Pulley Triple Parallel JLab | Aluminium, all 2 inch (50 mm) | Three side by side; metal bracket with hooks on both ends |
| Pulleys Aluminium | Aluminium, 51 mm | With bracket/hook; triple sheave; three in line; single on a table clamp |
Choose these pulleys when you want one listing that covers single, double and triple blocks with plastic wheels. The all-aluminium models are listed with metal wheels with deep V-grooves and hooks at both ends, if you prefer metal wheels or need a specific wheel size.
What Are the Pulleys Used For?
Pulleys are the standard apparatus for studying simple machines. A single fixed pulley changes the direction of the effort, a single movable pulley halves the effort in the ideal case, and blocks of two or three wheels combined as a block and tackle give a larger mechanical advantage. Students hang a load from the lower block, pull on the string with a spring balance, and work out the mechanical advantage (load ÷ effort), the velocity ratio (distance moved by the effort ÷ distance moved by the load, equal to the number of strands supporting the lower block) and the efficiency. The topic appears in ICSE class 10 physics (Machines), in middle-school science lessons on simple machines, and in first-year college mechanics.
Use a light, strong string that does not stretch, hang the upper block firmly from a stand or beam by its hook, and lift loads slowly so that the readings are steady. Friction in the wheels and the weight of the lower block make the measured mechanical advantage smaller than the velocity ratio, which is a useful point for discussion. Keep the axles clean and free of grit.
What to Specify When Ordering
- Version and arrangement — single, double or triple, and parallel or series.
- Wheel size — ask JLab to confirm the wheel diameter for the versions you order.
- Quantity — the minimum order is 10 units; a block-and-tackle set needs two blocks per group.
- Accessories — spring balances, slotted weights with hangers and retort stands are separate items for the same enquiry.
Frequently Asked Questions
What are these pulleys used for?
They are used to study simple machines in physics: fixed and movable pulleys, block-and-tackle systems, mechanical advantage, velocity ratio and efficiency.
Which versions are available?
Single, double and triple pulleys are listed, each with aluminium borders, plastic wheels and a hook, in parallel or series arrangements. State the version and arrangement in your enquiry.
What size are the wheels?
The listing gives the plastic wheels as about 2 in diameter (written 2’ in the original text), roughly 50 mm. Please confirm the size with JLab when you order.
What is the difference between parallel and series pulleys?
In a parallel block the wheels sit side by side; in a series (in-line) block they sit one after another. Both are used to build block-and-tackle systems, so choose the arrangement shown on your practical sheet.
How do students calculate mechanical advantage and efficiency?
Mechanical advantage is the load divided by the effort read on the spring balance. Velocity ratio is the distance the effort moves divided by the distance the load rises. Efficiency is the mechanical advantage divided by the velocity ratio, times one hundred per cent.
What information is needed for an export quotation?
Send the quantity of each version, the destination country and port or city, your delivery terms (for example FOB or CIF), any packing or labelling needs, and the tender reference if there is one.
Who manufactures these pulleys?
JLab, the trading name of Jain Laboratory Instruments Pvt Ltd, makes them at its works in Ambala, Haryana, India, and quotes for them directly as the manufacturer.
OEM Manufacturer
JLab is the trading name of Jain Laboratory Instruments Pvt Ltd, a mechanics and school physics lab equipment manufacturer in India, incorporated in 2017 and based on Hargolal Road, Ambala, Haryana. These pulleys are made at JLab’s own works rather than bought in from a trader, so schools, colleges, dealers and importers buy them factory-direct, each pulley is visually inspected before dispatch, and repeat orders are handled by the manufacturer. The company is registered under CIN U29309HR2017PTC069123 and holds MSME Udyam registration UDYAM-HR-01-0003849 (manufacturing enterprise). JLab exports worldwide and ships to buyers in every region — for example the Maldives in South Asia, Kuwait in the Middle East, Cambodia in Southeast Asia, El Salvador in Central America and the Caribbean and the USA in North America. Tender buyers can see the JLab lab tenders page.
Related Mechanics Apparatus
- Spring Balance — newton meters in a metal case with zero adjustment, for reading the effort.
- Hangers with Slotted Weights — chrome-plated iron slotted weights on a hanger, for the load.
- Pulleys Aluminium — 51 mm aluminium pulleys with bracket and hook, triple and in-line versions.
- Aluminium Pulley Single JLab — a single deep V-groove aluminium pulley with hooks at both ends.
- Aluminium Pulley Triple Parallel JLab — three aluminium pulleys side by side for block and tackle.
See more apparatus in the 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 quantity (minimum 10 units) of each version, any spring balances or weights to add, and your delivery location through the contact page.
Last updated: 4 October 2026
