Wall Mounted Screw Jack Manufacturer,Supplier and Exporter in India
Product Code : EL-AMLE-8943
Jlab Export is a leading Wall Mounted Screw Jack Manufacturer,and suppliers in India
Wall Mounted Screw Jack (code EL-AMLE-8943) is a wall-mounted apparatus for comparing the efficiencies of square and V form screws, both with 24 mm × 3 mm pitch threads. Two diametrically opposed cords with vertical load hangers turn a 200 mm diameter turntable, and the load hangs by a yoke from whichever nut is selected for the test. The screw jack is a JLab product, made in Ambala, India.
Specifications
| Parameter | Detail |
|---|---|
| Screws | Square and V form, 24 mm × 3 mm pitch threads |
| Turntable | 200 mm diameter, rotated by two diametrically opposed cords and vertical load hangers |
| Load hanger | Suspended by a yoke from the selected nut |
| Mounting | Wall mounted |
| Dimensions (excluding weights) | 320 × 230 × 240 mm |
| Weight (excluding weights) | 9.0 kg (approx.) |
| Manual | Instruction manual for student and lecturer |
| Quality check | Each screw jack 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-8943 |
| Manufacturer | Jain Laboratory Instruments Pvt Ltd (JLab) — OEM |
| Country of origin | India (made in Ambala, Haryana) |
Working Out Screw Efficiency
Weights on the two cord hangers apply the effort as a couple on the turntable, and the effort can be applied to raise or to lower the load. In one turn the load moves through one pitch, so the useful work is the load times the pitch, while the effort does work equal to its total force times the circumference at the turntable rim. Efficiency is their ratio, written in general form as W p / (2π P R), with W the load, p the pitch, P the total cord effort and R the turntable radius.
Square Against V Form
The sloping flanks of a V thread press harder on the nut than a square thread does for the same load, which raises the friction, so the V form needs more effort and returns the lower efficiency. Running the same loads on each screw, both raising and lowering, puts figures on that difference.
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The screw jack sits in Applied Mechanics Lab Equipments within Mechanical Engineering Lab Equipment.
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Last updated: 30 October 2026
