Rope Belt Friction Apparatus Manufacturer,Supplier and Exporter in India
Product Code : EL-AMLE-8946
Jlab Export is a leading Rope Belt Friction Apparatus Manufacturer,and suppliers in India
Rope Belt Friction Apparatus (code EL-AMLE-8946) is a wall-mounted rig for measuring the coefficient of friction between a cotton rope and a steel pulley: a fixed pulley, a second interchangeable pulley and a rope belt loaded by 2 load hangers form a complete loop. Of the four pulleys supplied, three are vee-grooved and one has a flat rim. JLab builds this rope friction rig in Ambala, India.
Specifications
| Parameter | Detail |
|---|---|
| Mounting | Wall mounted |
| Arrangement | Fixed pulley and a second, interchangeable pulley |
| Test pulleys | 4: vee grooves typically 60°, 90° and 120°, plus one flat rim |
| Rope and pulley | Cotton rope belt in a complete loop on steel pulleys |
| Load hangers | 2 |
| Angle of lap | Varied by alternative mounting positions |
| Dimensions (excluding weights) | 250 × 150 × 370 mm |
| Weight (excluding weights) | 19 kg (approx.) |
| Manual | Instruction manual for student and lecturer |
| Quality check | Each rope friction apparatus is visually inspected before dispatch |
| Pack quantity | Each (sold individually) |
| Minimum order quantity | 1 unit |
| Dispatch time | Usually 14–18 working days |
| Product code | EL-AMLE-8946 |
| Manufacturer | Jain Laboratory Instruments Pvt Ltd (JLab) — OEM |
| Country of origin | India (made in Ambala, Haryana) |
Finding μ for Cotton Rope on Steel
Weights are added to the load hangers until the rope is about to slip on the test pulley; the tight-side and slack-side tensions T1 and T2 are then known. On the flat rim they follow T1/T2 = e^(μθ), with θ the angle of lap in radians. The alternative mounting positions change θ, so a plot of ln(T1/T2) against θ gives μ as its slope.
What the Vee Grooves Change
In a vee groove the rope wedges against both flanks, which raises the normal force and the friction it can carry. The effective coefficient becomes μ/sin(α/2), where α is the included groove angle, so T1/T2 = e^(μθ/sin(α/2)). At the same lap the 60 degree groove holds the highest tension ratio, the 120 degree groove a smaller one and the flat rim the plain value set by μ. Running one rope over all four pulleys turns the wedge effect into measured figures.
Other Wall-Mounted Applied Mechanics Rigs
- Machine Friction of Belts Apparatus — vee, rope and flat belts tested on one graduated aluminium alloy pulley.
- Wall Mounted Screw Jack — square and V form screw threads compared for efficiency.
- Winch Crab Single/Double Purchase — machine-cut gears on cast iron wall brackets, in single or double purchase.
The rig belongs to Applied Mechanics Lab Equipments, a section of Mechanical Engineering Lab Equipment.
Request a Quote
Ask for a quotation with Add To Cart or the contact page, giving the number of rigs and the delivery address.
Last updated: 30 October 2026
