Home » Our Product » Mechanical Engineering Lab Equipment » Dynamics of Machine Lab Equipments » Spur Gear Set

Spur Gear Set Manufacturer,Supplier and Exporter in India

Product Code : EL-DOMLE-9142
Jlab Export is a leading Spur Gear Set Manufacturer,and suppliers in India

This bench top spur gear set shows how the number of teeth on each gear sets the transmission ratio of a gear train. Four plastic gears fit on a fixed axle and on two axles that clamp anywhere along a steel rail. Students can build one and two stage trains with any combination of the gears.

Specifications

Base	Metal base plate with fixed axle
Rail	Steel, swivels about the fixed axle when the locking pin is undone
Movable axles	Two, clamp to the rail in any position
Gears	Four plastic spur gears
Gear coupling	Drive pins
Storage	Plastic box for parts not in use
Experiments	Two stage spur gear train, train with intermediate gear, planet gear train
Minimum order quantity	1 unit
Dispatch time	Usually 14–18 working days
Manufacturer	JLab (Jain Laboratory Instruments Pvt Ltd), Ambala, India

Experiments with the Spur Gear Set

Students count the teeth on each gear and predict the speed ratio of a simple pair: driven teeth over driver teeth. They mark a tooth on each gear, turn the input through whole turns and count the output turns to check. Adding an intermediate gear makes the output turn the same way as the input without changing the ratio.

In the two stage train, coupled by drive pins, the overall ratio is the product of the two stage ratios. With the locking pin out, the rail swings round the fixed axle and the set becomes a planet gear train. This is a good first step before the motor driven Epicyclic Gear Apparatus. Results can also be compared with the bench mounted Gear Trains Apparatus, which adds a rotating arm for simple epicyclic gearing.

Frequently Asked Questions

How is the velocity ratio of a spur gear train worked out?
For one pair, divide the number of teeth on the driven gear by the number on the driver. For a two stage train, multiply the ratios of the two stages. An intermediate gear between a pair does not change the ratio.

Why does an intermediate gear change the direction of rotation?
Two external gears in mesh turn in opposite directions. Placing a third gear between them makes the output turn the same way as the input. Its own tooth count cancels out of the ratio, which is why it is called an idler.

How does the set show a planet gear train?
When the locking pin is undone, the rail can swing round the fixed axle and carry the gears on it round the central gear. Students then see a gear that spins and orbits at the same time, the basic motion of epicyclic gearing.

What parts come with the set?
The unit has a metal base plate with a fixed axle, a steel rail, two clamping axles, four plastic gears and drive pins to couple them. A plastic box holds the parts not in use.