Interference and Undercutting
Product Code : LSK-TOMLE-10621
Interference and Undercutting (SKU LSK-TOMLE-10621) is a demonstration board showing two gear-tooth faults side by side: interference, where a rack tip jams against the tooth flank, and undercutting, where the tooth root is cut away so the mesh runs freely. It supports gear theory lessons in engineering colleges and polytechnics. Manufacture takes place at the Science Lab Supplies works in Saha, Ambala, India, and the company quotes colleges, contractors and distributors without a middleman.
Specifications
What the Interference and Undercutting board does in each direction is recorded in the rows below. In short, it carries a rack and gear teeth that turn either way: clockwise, the rack tip is resisted by the tooth flank; anticlockwise, the undercut teeth mesh smoothly. Board size and materials are confirmed on the quotation.
| Specification | Value |
|---|---|
| SKU | LSK-TOMLE-10621 |
| Type | Demonstration board |
| Elements | Rack and gear teeth |
| Clockwise rotation | Rack tip resisted by tooth flank (interference) |
| Anticlockwise rotation | Undercut teeth give smooth working |
| Dimensions and materials | Stated on the quotation |
| Manufacturer | Science Lab Supplies, Saha, Ambala, Haryana |
| Country of origin | India |
Applications and Experiments for the Interference and Undercutting Board
Students rotate the board both ways to feel and see the difference between an interfering mesh and an undercut one. It makes the theory of minimum tooth numbers and the path of contact concrete before learners calculate these limits for real gear pairs in design exercises.
- B.Tech/B.E. mechanical, Theory of Machines: interference in involute gears.
- Machine design: why undercutting weakens small pinions and how it is avoided.
- Diploma mechanical engineering: visual demonstration of gear meshing faults.
- Workshop practice: relating tooth numbers chosen in design to gear blanks turned on a Center Lathe Machine and teeth indexed with a Universal Dividing Head.
Standard Scope of Supply
The Interference and Undercutting board is supplied as a single unit as described above. Any stand or accessory is named on the quotation, which also confirms the board size and materials before the order is placed, so it can be matched to a tender specification.
Packing, MOQ and Lead Time
Quotations cover a single board or a set for several lab benches and state packing, delivery time and price for that quantity. The board can be paired with the involute generation board on one quotation from this TVET lab equipment supplier.
As a registered exporter with an Importer-Exporter Code, Science Lab Supplies can ship to buyers in Vietnam, Malaysia, Peru, Egypt, Iraq and Nigeria. Gear-theory teachers can raise a query on the contact page, list the board in the enquiry cart beside the involute generator, or use the lab tender page for tendered purchases.
Frequently Asked Questions
What is the difference between interference and undercutting?
Interference is when the tip of one tooth digs into the flank of its mate below the base circle. Undercutting is the removal of that flank material during cutting, which avoids interference but weakens the tooth root.
How is the effect shown on the board?
Turning the board clockwise makes the rack tip catch on the tooth flank; turning it anticlockwise, the undercut teeth let the mesh run smoothly, so students compare both conditions on one board.
Is Science Lab Supplies the manufacturer or a trader?
A manufacturer: the board is produced in Saha, Ambala, India by Science Lab Supplies, which prices and dispatches it to colleges and contractors itself.
What size is the board?
Board size depends on the version offered. Ask through the contact page and the quotation will give the dimensions and materials of the board supplied.
Related Gearing and Mechanism Apparatus
Interference is usually taught with tooth generation and working drives. These items from the Theory of Machine Lab Equipments, Engineering Science and Fluid Mechanics ranges cover profile generation, gear trains, belts, pulleys, pump gears and mechanism kinematics for a complete mechanisms bench.
- Generation of Involute Gear Tooth Profile — three white acrylic discs of 450, 300 and 200 mm pitch circle diameter.
- Epicyclic Gear Train Holding Torque Apparatus — gear ratios between input shaft, output shaft and holding drum.
- Slip and Creep Measurement Apparatus — fixed-length flat belts tensioned by a sliding driven pulley.
- Drive Systems Kit — extra parts show how the angle of lap around a pulley relates to friction.
- Gear Pump — double-gear positive displacement pump with self-sealing oil connections.
- Pulley Kit — wheel and axle with single, double and triple sheave pulleys for mechanical advantage tests.
- Cariollis Component of Acceleration — water circulated by a monoblock pump from a fibreglass-lined tank.
Browse the full Theory of Machine Lab Equipments range, the Metal Manufacturing Training Machine range for lathes and dividing heads, or all TVET lab equipment.
Last updated: 9 October 2026
