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Pulley, Bench Mounting, Ball Bearing
Pulley, Bench Mounting, Ball Bearing (Product Code: SLE/PHY/275) is a 50 mm nylon pulley with a ball bearing, carried on an aluminium boss, used to guide a string and hanging mass in bench mechanics experiments. Tapped holes let the pulley be fitted with its axis of rotation in any one of three planes, and the boss clamps onto rods up to 13 mm in diameter. It is made by Jain Scientific Equipments Pvt Ltd (ScienceLab), an OEM manufacturer, at its own factory in Ambala, India.
Specifications
| Parameter | Detail |
|---|---|
| Type | Bench mounting |
| Pulley | 50 mm diameter, nylon, with ball bearing |
| Boss | Aluminium, 20 x 20 x 110 mm |
| Rod fixing | Hole and clamping screw, accepts rods up to 13 mm diameter |
| Pulley orientation | Tapped holes allow the axis of rotation in any one of three planes |
| Product code | SLE/PHY/275 |
| Manufacturer | Jain Scientific Equipments Pvt Ltd (ScienceLab) — OEM |
| Country of origin | India (made in Ambala, Haryana) |
What Is the Bench Mounting Pulley Used For?
The pulley turns the pull of a hanging mass into a horizontal force on a trolley, block or string, the basic set-up for Newton’s second law, friction and acceleration practicals. Its ball bearing keeps friction at the axle low, so more of the falling mass’s weight goes into accelerating the system and results come closer to theory. Because the wheel can be re-fitted in any of three planes, the same unit can also carry a string round a corner of the apparatus, which makes it a versatile piece of mechanics lab equipment.
Clamp the boss firmly on a support rod of up to 13 mm diameter, check that the string runs in the groove without rubbing the boss, and keep the bearing free of dust and grit. Thin, low-stretch string gives the most consistent readings from one run to the next.
What to Specify When Ordering
- Number of pulleys per bench or student group.
- The diameter of the support rods you use (the boss accepts up to 13 mm).
- Slotted masses, hangers or stands to be quoted with the pulleys.
OEM Manufacturer
ScienceLab is the trading name of Jain Scientific Equipments Private Limited, which manufactures this bench mounting pulley as the OEM at its own licensed factory at Saha, Ambala, Haryana, India. The nylon pulley and aluminium boss come as one assembly, supplied factory-direct to schools, colleges, laboratory dealers and importers. Repeat orders for extra pulleys, or questions about fitting the unit to your existing stands, go straight to the manufacturer; just ask us. See our company profile for background.
Related Laboratory Equipment
Apparatus used with the pulley in force and motion practicals:
- Pulley, Rod & Bench Mounting — a larger 70 mm light-alloy pulley with a bench or rod bracket.
- Slotted Mass Hanger, 500g — hanging masses to pull the string.
- Retort Stand — a stand and rod to carry the aluminium boss.
- Apparatus Newton’s Second Law — acceleration experiments driven by a pulley and falling mass.
- Table Clamp For Rods — fixes a support rod to the bench edge.
See the full Physics Lab Equipment category for more mechanics apparatus.
Frequently Asked Questions
What size is the Pulley, Bench Mounting, Ball Bearing?
The Pulley, Bench Mounting, Ball Bearing has a 50 mm diameter nylon pulley carried on an aluminium boss measuring 20 x 20 x 110 mm. The boss has a hole and clamping screw that accepts support rods up to 13 mm in diameter.
Why does the bench mounting pulley have a ball bearing?
The ball bearing in the Pulley, Bench Mounting, Ball Bearing lets the nylon wheel turn with very little friction, so less of the hanging mass’s pull is lost at the axle and acceleration and force results match theory more closely.
Can the pulley be mounted in different orientations?
Yes. The boss of the Pulley, Bench Mounting, Ball Bearing has tapped holes, so the nylon pulley can be fitted with its axis of rotation in any one of three planes, letting the string run in the direction each experiment needs.
What rods does the Pulley, Bench Mounting, Ball Bearing fit?
The Pulley, Bench Mounting, Ball Bearing clamps onto rods up to 13 mm in diameter using the hole and clamping screw in its aluminium boss. Check that your stand or support rods are 13 mm or thinner before ordering.
Who manufactures the Pulley, Bench Mounting, Ball Bearing?
The Pulley, Bench Mounting, Ball Bearing is manufactured by Jain Scientific Equipments Pvt Ltd (ScienceLab), the OEM, at its own licensed factory at Saha, Ambala, Haryana, India, which quotes it directly to schools, colleges, dealers and importers.
What should a quotation request for the bench mounting pulley include?
For the Pulley, Bench Mounting, Ball Bearing, state the product code SLE/PHY/275, the number of pulleys, your support-rod diameter, any masses or stands to include and the delivery location. Send the request through the contact page or enquiry cart.
Request a Quote
Quotations for the Pulley, Bench Mounting, Ball Bearing come direct from the manufacturer. Write to us through the contact page or add the pulley to the enquiry cart with your other mechanics items.
Last updated: 24 September 2026
Pulley, Metal, Double
Pulley, Metal, Double (Product Code: SLE/PHY/276) is a tandem metal pulley block with 50 mm and 38 mm wheels, used to build block-and-tackle systems and study mechanical advantage in school physics. Its open-sided frame, with a hook at each end, lets students string it up quickly without any threading, and both pulleys run on ball bearings. It is made by Jain Scientific Equipments Pvt Ltd (ScienceLab), an OEM manufacturer, at its own factory in Ambala, India.
Specifications
| Parameter | Detail |
|---|---|
| Arrangement | Tandem metal pulleys |
| Type | Double |
| Pulley diameters | 50 mm and 38 mm |
| Bearings | Ball bearings |
| Frame | Open-sided, with hooks at each end |
| Stringing | Quick and easy; no threading involved |
| Product code | SLE/PHY/276 |
| Manufacturer | Jain Scientific Equipments Pvt Ltd (ScienceLab) — OEM |
| Country of origin | India (made in Ambala, Haryana) |
What Is the Double Metal Pulley Used For?
Paired with a single pulley or a second double block, it forms a pulley system in which the load is shared between several string segments. Students measure the effort, the load and the distances each one moves, then calculate mechanical advantage, velocity ratio and efficiency. With two wheels in one block, a group can rig systems with a higher velocity ratio than single pulleys allow, and the ball bearings keep frictional losses small so efficiency figures stay realistic.
The open-sided frame is the practical advantage in class: the string is simply laid over each wheel instead of being threaded through, so groups can change from one arrangement to another in moments. Hang the block from a firm support by its top hook, attach loads to the bottom hook, and keep the string seated in the grooves as masses are added. It is a flexible pulley system for the school lab.
What to Specify When Ordering
- Number of double blocks, plus single pulleys if you plan block-and-tackle systems.
- Slotted masses and hangers for the load, and a spring balance for measuring effort.
- Stands or a support frame to hang the pulleys from.
OEM Manufacturer
Jain Scientific Equipments Private Limited trades as ScienceLab and is the OEM of the Pulley, Metal, Double, which it makes at its own licensed factory at Saha, Ambala, Haryana, India. The company (CIN U29309HR2020PTC087597) produces its mechanics apparatus at these premises under Factory Licence AMB-ONLINE-CHD-J-414 and supplies schools, colleges, dealers and importers directly. Additional pulley blocks, or matching single pulleys for an existing set, can be ordered from the manufacturer; just ask us. See our company profile.
Related Laboratory Equipment
Pulleys and accessories for complete pulley-system experiments:
- Pulley, Metal, Double, Parallel — two 50 mm wheels in a metal frame for a different block arrangement.
- Pulley, Metal, Single, Parallel — a single metal pulley to combine with this block.
- Pulley, Plastic Double, with Ball Bearings — a plastic in-line alternative with the same open-sided frame.
- Slotted Mass Hanger, 500g — the load for the bottom hook.
- Force Meter/Spring Balance — measures the effort needed to raise the load.
The Physics Lab Equipment category lists the full pulley range.
Frequently Asked Questions
What sizes are the pulleys in the Pulley, Metal, Double?
The Pulley, Metal, Double carries two metal pulleys in tandem, one 50 mm and one 38 mm in diameter. Both run on ball bearings inside an open-sided frame that has a hook at each end for hanging the block and attaching a load.
What is the advantage of the open-sided frame?
The open-sided frame of the Pulley, Metal, Double lets the string be laid over the wheels instead of threaded through the frame, so students can string up or change a pulley arrangement quickly during a practical lesson.
How is the Pulley, Metal, Double used to show mechanical advantage?
Hang the Pulley, Metal, Double from a support, combine it with a single or second double pulley, and lift a known load with a spring balance. Comparing effort with load, and string pulled with load raised, gives mechanical advantage, velocity ratio and efficiency.
How is the Pulley, Metal, Double different from the parallel version?
The Pulley, Metal, Double has 50 mm and 38 mm pulleys in tandem inside an open-sided frame, while the Pulley, Metal, Double, Parallel has two 50 mm wheels mounted in a metal frame with two hooks. Both build multi-string pulley systems.
Who manufactures the Pulley, Metal, Double?
The Pulley, Metal, Double is manufactured by Jain Scientific Equipments Pvt Ltd (ScienceLab), the OEM, at its licensed factory at Saha, Ambala, Haryana, India, and is supplied directly to schools, colleges, dealers and importers in India and international markets.
What should I include when requesting a quote for the Pulley, Metal, Double?
For the Pulley, Metal, Double, give the product code SLE/PHY/276, the number of pulley blocks, any single pulleys, masses or spring balances needed, and the delivery location. Send the details through the contact page or add the items to the enquiry cart.
Request a Quote
Get a Pulley, Metal, Double quotation straight from the manufacturer by writing through our contact page, or place the block and its accessories in the enquiry cart.
Last updated: 24 September 2026
Pulley, Metal, Double, Parallel
Pulley, Metal, Double, Parallel (Product Code: SLE/PHY/277) is a pulley block with two 50 mm wheels mounted in parallel in a metal frame, used to set up multi-string pulley systems for mechanical advantage experiments. With two hooks on the frame, it can hang from a support as the fixed block or travel with the load as the moving block. It is made by Jain Scientific Equipments Pvt Ltd (ScienceLab), an OEM manufacturer, at its own factory in Ambala, India.
Specifications
| Parameter | Detail |
|---|---|
| Type | Double, parallel |
| Wheels | Two, 50 mm diameter |
| Material | Metal |
| Frame | Metal, with 2 hooks |
| Product code | SLE/PHY/277 |
| Manufacturer | Jain Scientific Equipments Pvt Ltd (ScienceLab) — OEM |
| Country of origin | India (made in Ambala, Haryana) |
What Is the Parallel Double Pulley Used For?
Two wheels on one block let a class build a four-string block and tackle when a pair of these pulleys is used together, one fixed above and one moving with the load. Students then find that the effort needed is roughly a quarter of the load while the string must be pulled four times as far, the classic demonstration of mechanical advantage and velocity ratio in a school pulley system lab.
Because both wheels are the same 50 mm size, the supporting strings share the load evenly, which keeps the arithmetic simple for younger students. Hang the fixed block from a rigid stand, pass the string over each wheel in turn, and watch that it does not jump from one groove to the other as masses are added. Measuring the real effort with a spring balance then shows how friction lowers efficiency below the ideal value.
What to Specify When Ordering
- Number of blocks: two per group gives a four-string system.
- Masses, hangers and a spring balance for load and effort.
- Stands or a frame from which to hang the fixed block.
OEM Manufacturer
Jain Scientific Equipments Private Limited, trading as ScienceLab, is the original equipment manufacturer of this parallel double pulley and produces it at its own licensed factory at Saha, Ambala, Haryana, India. Schools, colleges and dealers buying mechanics apparatus receive quotations straight from the maker, and extra blocks for new groups can be added to later orders by asking us. The company’s background is on our profile page.
Related Physics Lab Equipment
Other blocks and accessories for the same experiments:
- Pulley, Metal, Double — tandem 50 mm and 38 mm pulleys in an open-sided frame.
- Pulley, Metal, Single, Parallel — a single 50 mm wheel for simpler systems.
- Pulley, Plastic, Double, Parallel — the plastic-wheel version on a steel frame.
- Hangers with Slotted Weights — loads for the moving block.
- Spring Balance, Tubular — reads the effort on the free end of the string.
Browse Physics Lab Equipment for the complete range.
Frequently Asked Questions
What size are the wheels on the Pulley, Metal, Double, Parallel?
The Pulley, Metal, Double, Parallel has two pulley wheels of 50 mm diameter mounted in a metal frame. The frame carries two hooks, used for hanging the block from a support or for attaching the load.
How many supporting strings does a system with this pulley give?
Using two Pulley, Metal, Double, Parallel blocks, one fixed and one moving, gives four supporting string segments and an ideal mechanical advantage of four. Friction makes the measured value a little lower, which students use to calculate efficiency.
What is the difference between parallel and tandem double pulleys?
In the Pulley, Metal, Double, Parallel both wheels are 50 mm and mounted in parallel in a metal frame, while the tandem Pulley, Metal, Double has two different-sized wheels in an open-sided frame. Both are used to build multi-string pulley systems.
What load can the Pulley, Metal, Double, Parallel take?
A maximum load for the Pulley, Metal, Double, Parallel is not stated in this listing. Tell us the heaviest mass your experiments use through the contact page, and we will confirm whether this metal pulley block is suitable before you order.
Who manufactures the Pulley, Metal, Double, Parallel?
The Pulley, Metal, Double, Parallel is manufactured by Jain Scientific Equipments Pvt Ltd (ScienceLab), the OEM, at its own licensed factory at Saha, Ambala, Haryana, India, and supplied factory-direct to schools, colleges, dealers and importers.
Can the parallel double pulley be ordered in class sets?
Yes. The Pulley, Metal, Double, Parallel can be quoted in class quantities, usually two blocks per group, with masses and spring balances if needed, for delivery in India and international markets. Send the quantities through our contact page or enquiry cart.
Request a Quote
For a Pulley, Metal, Double, Parallel quotation from the manufacturer, use the contact page or add the item to the enquiry cart along with masses and balances.
Last updated: 24 September 2026
Pulley, Metal, Single, Parallel
Pulley, Metal, Single, Parallel (Product Code: SLE/PHY/278) is a single 50 mm metal pulley wheel mounted in a metal frame with two hooks, used as a fixed or movable pulley in introductory machines and forces experiments. It is the simplest block in the metal pulley range and is well suited to showing how a pulley changes the direction of a force before students move on to multi-wheel systems. It is made by Jain Scientific Equipments Pvt Ltd (ScienceLab), an OEM manufacturer, at its own factory in Ambala, India.
Specifications
| Parameter | Detail |
|---|---|
| Type | Single |
| Wheel | One, 50 mm diameter |
| Material | Metal |
| Frame | Metal, with 2 hooks |
| Product code | SLE/PHY/278 |
| Manufacturer | Jain Scientific Equipments Pvt Ltd (ScienceLab) — OEM |
| Country of origin | India (made in Ambala, Haryana) |
What Is the Single Metal Pulley Used For?
Hung from a stand as a fixed pulley, it shows that the effort equals the load but can act in a more convenient direction, which is why pulleys are used to raise flags and draw water from wells. Attached to the load as a movable pulley, with the string anchored above, it roughly halves the effort while doubling the length of string that must be pulled, giving students their first measurement of mechanical advantage with simple mechanics lab equipment.
The two hooks make the frame easy to use in either role, and the single block combines with double or triple blocks to make three-string and larger systems. Keep the wheel groove clean, check that the wheel turns freely before each lesson, and add masses gradually so the string stays in the groove.
What to Specify When Ordering
- Quantity: two per group lets students compare fixed and movable pulleys side by side.
- Double or triple pulley blocks to combine with it for larger systems.
- Masses, hangers and a spring balance.
OEM Manufacturer
ScienceLab is the brand of Jain Scientific Equipments Private Limited, the OEM that manufactures this single metal pulley at its own licensed factory at Saha, Ambala, Haryana, India. Because the metal pulley range is produced by the same maker, single and double blocks can be ordered together and match one another. For extra quantities or repeat orders, ask us directly. Learn more on our company profile.
Related Laboratory Equipment
Blocks and accessories that extend single-pulley experiments:
- Pulley, Metal, Double, Parallel — a two-wheel block to combine with the single pulley.
- Pulley, Metal, Double — a tandem double pulley with an open-sided frame.
- Pulley, Plastic, Triple, Parallel — three wheels for larger mechanical advantage.
- Slotted Mass Hanger, 1kg — a hanger and masses for the load.
- Force Meter/Spring Balance — measures the effort.
More mechanics apparatus is listed under Physics Lab Equipment.
Frequently Asked Questions
What size is the Pulley, Metal, Single, Parallel?
The Pulley, Metal, Single, Parallel has one pulley wheel of 50 mm diameter mounted in a metal frame. The frame carries two hooks, so the pulley can be hung from a support or attached to a load, depending on the experiment.
Can the single metal pulley be used as both a fixed and a movable pulley?
Yes. The Pulley, Metal, Single, Parallel can hang from a stand as a fixed pulley to change the direction of a force, or be hooked to the load as a movable pulley, which roughly halves the effort needed to lift it.
What else is needed to use the Pulley, Metal, Single, Parallel?
To use the Pulley, Metal, Single, Parallel you need a support stand, string, a set of masses with a hanger and a spring balance for effort. These are listed separately, so include them in your enquiry if you want a single quotation.
How does the single pulley differ from double and triple pulleys?
The Pulley, Metal, Single, Parallel has one 50 mm wheel, while double and triple blocks carry two or three wheels. Combining blocks increases the number of supporting strings, and with it the mechanical advantage students can measure.
Who manufactures the Pulley, Metal, Single, Parallel?
The Pulley, Metal, Single, Parallel is manufactured by Jain Scientific Equipments Pvt Ltd (ScienceLab), the OEM, at its own licensed factory at Saha, Ambala, Haryana, India, and quoted directly to schools, colleges, dealers and importers.
What should a quotation request for the single metal pulley include?
A quotation request for the Pulley, Metal, Single, Parallel should state the product code SLE/PHY/278, the number of pulleys, any other blocks or masses to include and the delivery location in India or abroad. Send it through our contact page.
Request a Quote
Request the Pulley, Metal, Single, Parallel through the contact page or the enquiry cart; the quotation comes directly from the manufacturer.
Last updated: 24 September 2026
Pulley, Plastic Double, with Ball Bearings
Pulley, Plastic Double, with Ball Bearings (Product Code: SLE/PHY/279) is a double block of in-line plastic pulleys running on ball bearings, used to rig lightweight block-and-tackle systems in school mechanics practicals. Its open-sided frame has a hook at each end and lets students lay the string over the wheels without threading. It is made by Jain Scientific Equipments Pvt Ltd (ScienceLab), an OEM manufacturer, at its own factory in Ambala, India.
Key Details
| Parameter | Detail |
|---|---|
| Material | Plastic pulleys |
| Arrangement | In-line |
| Type | Double |
| Bearings | Ball bearings |
| Frame | Open-sided, with hooks at each end |
| Stringing | Quick and easy; no threading involved |
| Product code | SLE/PHY/279 |
| Manufacturer | Jain Scientific Equipments Pvt Ltd (ScienceLab) — OEM |
| Country of origin | India (made in Ambala, Haryana) |
What Is the Plastic Double Pulley Used For?
Two in-line wheels in one block let students add a second supporting string to a pulley system, and plastic pulleys keep the block light, which matters when the moving block’s own weight would otherwise distort small-load results. Pair it with a single pulley or a second double block, measure effort, load and distance moved, then calculate mechanical advantage and efficiency.
The ball bearings keep friction low, and the open side of the frame means strings are laid in rather than threaded, so a group can switch between arrangements quickly. Wipe the wheels clean, keep them away from heat sources such as burners, and check that each wheel spins freely before the lesson. It is a practical piece of physics lab equipment for school benches.
What to Specify When Ordering
- Number of double blocks, and single pulleys to pair with them.
- Plastic or metal: a metal tandem double pulley is also listed.
- Masses, hangers and spring balances.
- Any wheel-diameter requirement, which we will confirm with the quotation.
OEM Manufacturer
Jain Scientific Equipments Private Limited, trading as ScienceLab, manufactures this plastic double pulley as the OEM at its own licensed factory at Saha, Ambala, Haryana, India. It belongs to a pulley range in plastic and metal that institutions and resellers can source from the maker in a single order. Ask us directly for extra blocks or to match pulleys supplied earlier. The ScienceLab profile has more about the company.
Related Laboratory Equipment
Pulleys and accessories used alongside this block:
- Pulley, Metal, Double — the metal tandem version with 50 mm and 38 mm wheels.
- Pulley, Plastic, Double, Parallel — plastic wheels in parallel on a steel frame.
- Pulley, Plastic, Triple, Parallel — three plastic wheels for larger systems.
- Hangers with Slotted Weights 500 gm — loads for the moving block.
- Force Meter/Spring Balance — measures the effort.
See the Physics Lab Equipment category for the complete pulley range.
Frequently Asked Questions
What is the Pulley, Plastic Double, with Ball Bearings?
The Pulley, Plastic Double, with Ball Bearings is a double pulley block with two in-line plastic pulleys running on ball bearings, held in an open-sided frame with a hook at each end, for pulley-system experiments in school mechanics.
What does in-line mean for this plastic double pulley?
In the Pulley, Plastic Double, with Ball Bearings, in-line means the two plastic pulleys are arranged one after the other along the frame, so each supporting string runs over its own wheel in turn as the system is rigged.
Why is an open-sided frame useful?
The open-sided frame on the Pulley, Plastic Double, with Ball Bearings allows quick and easy stringing because no threading is involved. Students lay the string over each wheel, which saves time when changing pulley arrangements during a lesson.
What diameter are the pulleys?
The wheel diameter of the Pulley, Plastic Double, with Ball Bearings is not stated in this listing. If your experiments need a particular size, ask through our contact page and we will confirm it before you place an order.
Should I choose the plastic or the metal double pulley?
Choose the Pulley, Plastic Double, with Ball Bearings when a light moving block helps small-load experiments; the metal tandem double pulley suits groups that prefer a metal block. Both use ball bearings and an open-sided frame for quick stringing.
Who manufactures the Pulley, Plastic Double, with Ball Bearings?
The Pulley, Plastic Double, with Ball Bearings is manufactured by Jain Scientific Equipments Pvt Ltd (ScienceLab), the OEM, at its own licensed factory at Saha, Ambala, Haryana, India, and quoted directly to schools, colleges, dealers and importers.
Request a Quote
Send your quantity and delivery location for the Pulley, Plastic Double, with Ball Bearings through the contact page, or add it to the enquiry cart. The manufacturer replies with the quotation directly.
Last updated: 24 September 2026
Pulley, Plastic, Double, Parallel
Pulley, Plastic, Double, Parallel (Product Code: SLE/PHY/280) is a pair of 50 mm plastic pulleys mounted in parallel on a steel frame, used to build compound pulley systems in school and college mechanics labs. The frame has a hook at each end, measures 8.9 cm overall and is capable of holding over 13 kg, which gives a good margin for classroom loads. It is made by Jain Scientific Equipments Pvt Ltd (ScienceLab), an OEM manufacturer, at its own factory in Ambala, India.
Specifications
| Parameter | Detail |
|---|---|
| Type | Double, parallel |
| Pulleys | Two, plastic, 50 mm diameter |
| Frame | Steel, with hooks at each end |
| Overall length | 8.9 cm |
| Load capacity | Capable of holding over 13 kg |
| Inner gap of pulley | 4 mm |
| Product code | SLE/PHY/280 |
| Manufacturer | Jain Scientific Equipments Pvt Ltd (ScienceLab) — OEM |
| Country of origin | India (made in Ambala, Haryana) |
What Is the Plastic Parallel Double Pulley Used For?
The block combines light plastic wheels with a strong steel frame, so it can serve as either the fixed or the moving block in a block and tackle. Two of them give four supporting strings; paired with a single pulley they give three. Students measure the effort with a spring balance, compare it with the load and work out mechanical advantage, velocity ratio and efficiency for each arrangement in their pulley system lab work.
The 4 mm inner gap of each pulley suits laboratory string or thin cord, while thicker cord may bind in the groove. The rated capacity of over 13 kg means the block copes comfortably with the slotted masses used in school practicals. Hang the upper block from a rigid support, keep the strings parallel and untwisted, and add masses gradually.
What to Specify When Ordering
- Number of blocks per group; two blocks give a four-string system.
- String or cord that fits the 4 mm pulley gap.
- Masses, hangers and spring balances to be quoted with the pulleys.
OEM Manufacturer
ScienceLab is the trading name of Jain Scientific Equipments Private Limited, the OEM that makes this plastic parallel double pulley at its own licensed factory at Saha, Ambala, Haryana, India. The company is a registered MSME enterprise with manufacturing as its major activity (Udyam UDYAM-HR-01-0003714), and it ships export orders under Importer-Exporter Code AAECJ8618A issued by the DGFT. Schools, colleges, dealers and importers receive quotations straight from the manufacturer. See our company profile.
Related Laboratory Equipment
Blocks and accessories that complete a pulley experiment:
- Pulley, Plastic, Triple, Parallel — three plastic wheels for larger systems.
- Pulley, Metal, Double, Parallel — the metal version with two 50 mm wheels.
- Pulley, Plastic Double, with Ball Bearings — in-line plastic pulleys in an open-sided frame.
- Slotted Mass Hanger, 1kg — loads for the moving block.
- Spring Balance, Tubular — reads the effort.
The complete range is in the Physics Lab Equipment category.
Frequently Asked Questions
What load can the Pulley, Plastic, Double, Parallel hold?
The Pulley, Plastic, Double, Parallel is capable of holding over 13 kg, thanks to its steel frame. That comfortably covers the slotted masses normally used in school and college pulley experiments.
What are the dimensions of the plastic parallel double pulley?
The Pulley, Plastic, Double, Parallel has two plastic pulleys of 50 mm diameter, an overall length of 8.9 cm and an inner pulley gap of 4 mm, with a hook at each end of its steel frame.
What string fits the Pulley, Plastic, Double, Parallel?
Each pulley of the Pulley, Plastic, Double, Parallel has a 4 mm inner gap, so choose laboratory string or cord thinner than 4 mm. Thicker cord can bind in the groove and add friction that distorts effort readings.
Why does this pulley use a steel frame with plastic wheels?
The Pulley, Plastic, Double, Parallel pairs lightweight 50 mm plastic wheels with a steel frame, so the block stays light enough for small-load work while the frame provides the strength to hold over 13 kg.
Who manufactures the Pulley, Plastic, Double, Parallel?
The Pulley, Plastic, Double, Parallel is manufactured by Jain Scientific Equipments Pvt Ltd (ScienceLab), the OEM, at its own licensed factory at Saha, Ambala, Haryana, India, and supplied factory-direct to schools, colleges, dealers and importers.
What should a quotation request for this pulley include?
A quotation request for the Pulley, Plastic, Double, Parallel should state the product code SLE/PHY/280, the number of blocks, any masses, spring balances or string needed and the delivery location in India or abroad. Send it through our contact page.
Request a Quote
Ask the manufacturer for a Pulley, Plastic, Double, Parallel quotation through the contact page, or list it in the enquiry cart with the rest of your mechanics order.
Last updated: 24 September 2026
Pulley, Plastic, Triple, Parallel
Pulley, Plastic, Triple, Parallel (Product Code: SLE/PHY/281) is a pulley block with three 50 mm plastic pulleys mounted in parallel in a metal frame with two hooks, used for high-ratio block-and-tackle experiments in physics laboratories. When two blocks are used together, students can build systems with six supporting strings and see mechanical advantage rise with every added segment. It is made by Jain Scientific Equipments Pvt Ltd (ScienceLab), an OEM manufacturer, at its own factory in Ambala, India.
Specifications
| Parameter | Detail |
|---|---|
| Type | Triple, parallel |
| Pulleys | Three, plastic, 50 mm diameter |
| Frame | Metal, with two hooks |
| Product code | SLE/PHY/281 |
| Manufacturer | Jain Scientific Equipments Pvt Ltd (ScienceLab) — OEM |
| Country of origin | India (made in Ambala, Haryana) |
What Is the Triple Pulley Block Used For?
A triple block is the step up from single and double pulleys when students investigate how mechanical advantage depends on the number of supporting strings. Two triple blocks give a six-string tackle, and one triple with a double gives five. Measuring effort and distance moved for each arrangement shows that the effort falls as the length of string pulled grows, and that friction lowers efficiency as more wheels are added.
Keep the strings in order when rigging: work from the fixed block to the moving block one wheel at a time so that segments do not cross. Younger students find rigging easier if each wheel is marked with a small dot of colour. The plastic wheels keep the moving block’s own weight low, which helps when efficiency is calculated, and make this a useful addition to any set of mechanics lab equipment.
What to Specify When Ordering
- Number of triple blocks; two per group give a six-string tackle.
- Double or single pulleys to combine with it.
- Masses, hangers, a spring balance and a rigid support.
OEM Manufacturer
The Pulley, Plastic, Triple, Parallel is manufactured by Jain Scientific Equipments Private Limited, which trades as ScienceLab and is the OEM for its pulley range. Production takes place at the company’s own licensed factory at Saha, Ambala, Haryana, India, and the blocks are supplied direct to schools, colleges, laboratory dealers and importers. Extra blocks or replacements for an existing class set can be requested from the manufacturer; just ask us. Read more on the ScienceLab profile.
Related Laboratory Equipment
Items used with the triple block:
- Pulley, Plastic, Double, Parallel — a two-wheel block for five-string systems.
- Pulley, Metal, Single, Parallel — a single wheel for simpler comparisons.
- Pulley, Plastic Double, with Ball Bearings — in-line plastic pulleys on ball bearings.
- Hangers with Slotted Weights — loads for the moving block.
- Force Meter/Spring Balance — measures the effort.
Visit the Physics Lab Equipment category for more mechanics apparatus.
Frequently Asked Questions
How many pulleys does the Pulley, Plastic, Triple, Parallel have?
The Pulley, Plastic, Triple, Parallel has three plastic pulleys of 50 mm diameter mounted in parallel in a metal frame with two hooks, so it can act as either the fixed or the moving block of a pulley system.
What mechanical advantage can be shown with the triple pulley?
Two Pulley, Plastic, Triple, Parallel blocks give six supporting string segments, an ideal mechanical advantage of six, and one triple with a double gives five. Measured values are lower because of friction, which lets students calculate efficiency.
What else is needed with the Pulley, Plastic, Triple, Parallel?
The Pulley, Plastic, Triple, Parallel needs a rigid support, string, a second pulley block, masses with a hanger and a spring balance. These items are listed separately, so add them to your enquiry to receive a single quotation.
What is the maximum load for the triple pulley?
A load rating for the Pulley, Plastic, Triple, Parallel is not stated in this listing. Tell us the heaviest mass your experiments use through the contact page, and we will confirm suitability before you order.
Who manufactures the Pulley, Plastic, Triple, Parallel?
The Pulley, Plastic, Triple, Parallel is manufactured by Jain Scientific Equipments Pvt Ltd (ScienceLab), the OEM, at its own licensed factory at Saha, Ambala, Haryana, India, and quoted factory-direct to schools, colleges, dealers and importers.
Can the triple pulley be ordered in class sets?
Yes. The Pulley, Plastic, Triple, Parallel can be quoted in class quantities, usually two blocks per group, for schools, colleges, dealers and importers in India and international markets. Send the quantity and destination through our contact page or enquiry cart.
Request a Quote
For a Pulley, Plastic, Triple, Parallel quotation direct from the manufacturer, write through the contact page or add the block to the enquiry cart.
Last updated: 24 September 2026
Pulley, Rod & Bench Mounting
Pulley, Rod & Bench Mounting (Product Code: SLE/PHY/282) is a 70 mm light-alloy pulley in an alloy bracket that clamps to a bench edge or a support rod, used to run a string and hanging mass off the bench in dynamics and friction practicals. The wheel turns on a brass/silvered-steel bearing, and the bracket fits bench edges up to 38 mm thick or a 13 mm support rod. It is made by Jain Scientific Equipments Pvt Ltd (ScienceLab), an OEM manufacturer, at its own factory in Ambala, India.
Specifications
| Parameter | Detail |
|---|---|
| Pulley diameter | 70 mm |
| Pulley material | Light alloy |
| Bearing | Brass/silvered-steel |
| Bracket | Alloy, with two clamping screws for bench or rod support |
| Bench mounting | Clamps to a bench edge or similar support up to 38 mm thick |
| Other mounting | Can be screwed to a flat surface or held on a 13 mm diameter support rod |
| Product code | SLE/PHY/282 |
| Manufacturer | Jain Scientific Equipments Pvt Ltd (ScienceLab) — OEM |
| Country of origin | India (made in Ambala, Haryana) |
What Is the Rod and Bench Mounting Pulley Used For?
Clamped at the end of the bench, the pulley lets a string run from a trolley or block over the edge to a hanging mass, the standard arrangement for measuring acceleration against force, finding coefficients of friction and testing Newton’s second law. The larger 70 mm wheel gives the string a gentler bend than a small pulley, which helps it run smoothly over long pulls.
Three mounting options make it easy to fit into different laboratories: clamp it to a bench edge up to 38 mm thick, screw it to a flat surface for a permanent demonstration set-up, or hold it on a 13 mm support rod to raise it to the height of a runway or inclined plane apparatus. Tighten both clamping screws before loading and keep the bearing clean.
What to Specify When Ordering
- Number of pulleys per bench or group.
- Your bench-top thickness (the clamp takes up to 38 mm) or support-rod diameter (13 mm).
- Masses, hangers, trolleys or runways to be quoted with it.
OEM Manufacturer
Jain Scientific Equipments Private Limited, known commercially as ScienceLab, is the OEM of this rod and bench mounting pulley and manufactures it at its own licensed factory at Saha, Ambala, Haryana, India. Institutions and resellers buy it factory-direct, so questions about fitting it to particular benches or rods are answered by the people who make it. For additional pulleys or repeat orders, ask us. More background is on our company profile.
Related Laboratory Equipment
Apparatus that works with a bench pulley in dynamics practicals:
- Pulley, Bench Mounting, Ball Bearing — a smaller 50 mm nylon pulley on an aluminium boss.
- Apparatus Newton’s Second Law — force and acceleration experiments using a bench pulley.
- Inclined Plane with Roller & Pan — for friction and inclined-plane practicals.
- Slotted Mass Hanger, 500g — the hanging mass on the end of the string.
- Bench Pulley — another bench pulley option for student sets.
Find more in the Physics Lab Equipment category.
Frequently Asked Questions
What size is the Pulley, Rod & Bench Mounting?
The Pulley, Rod & Bench Mounting has a 70 mm diameter light-alloy pulley running on a brass/silvered-steel bearing, held in an alloy bracket with two clamping screws for bench or rod support.
How thick a bench can the pulley clamp to?
The bracket of the Pulley, Rod & Bench Mounting clamps to a bench edge or similar support up to 38 mm thick. Measure your bench top before ordering; for thicker benches it can be screwed to a flat surface or held on a support rod.
Can the Pulley, Rod & Bench Mounting be fitted on a support rod?
Yes. The Pulley, Rod & Bench Mounting can be held on a 13 mm diameter support rod, which lets you set the pulley at the height of a runway or inclined plane rather than at bench level.
What bearing does the Pulley, Rod & Bench Mounting use?
The Pulley, Rod & Bench Mounting turns on a brass/silvered-steel bearing held in its alloy bracket, giving the light-alloy wheel a smooth run for dynamics and friction experiments in the school or college laboratory.
Who manufactures the Pulley, Rod & Bench Mounting?
The Pulley, Rod & Bench Mounting is manufactured by Jain Scientific Equipments Pvt Ltd (ScienceLab), the OEM, at its own licensed factory at Saha, Ambala, Haryana, India, and supplied directly to schools, colleges, dealers and importers.
What should a quotation request for this pulley include?
A quotation request for the Pulley, Rod & Bench Mounting should give the product code SLE/PHY/282, the number of pulleys, your bench thickness or rod diameter and the delivery location. Send it through our contact page or the enquiry cart.
Request a Quote
Quotations for the Pulley, Rod & Bench Mounting come from the manufacturer itself. Use the contact page or add the pulley to the enquiry cart.
Last updated: 24 September 2026
