Epicyclic Gear Train Holding Torque Apparatus
Product Code : LSK-TOMLE-10624
Epicyclic Gear Train Holding Torque Apparatus (SKU LSK-TOMLE-10624) is a motorised rig for measuring the speed ratios and the input, output and holding torques of an epicyclic (planetary) gear train. A sun gear drives two planet gears meshing with an annular gear, and rope brakes load the output and holding drum. It is used in Theory of Machines labs. Production happens at the Science Lab Supplies factory in Saha, Ambala, India, from where the company quotes and dispatches the rig.
Specifications
Gears, drive, panel and loading of the epicyclic rig are set out one item per row. In short, a variable-speed DC motor turns the sun gear, two planet gears on a common arm drive the output shaft, rope brakes load the output and holding drum, and a panel shows current, voltage and speed.
| Specification | Value |
|---|---|
| SKU | LSK-TOMLE-10624 |
| Sun gear | On the input shaft |
| Planet gears | 2 nos, meshing with the annular gear |
| Planet carrier | Common arm fitted to the output shaft |
| Bearing blocks | For input and output shafts |
| External type train | Epicyclic gear train with holding drum and handle |
| Internal type train | Compact epicyclic gear train |
| Drive | Variable-speed DC motor |
| Ammeter | Digital, on the control panel |
| Voltmeter | Digital, on the control panel |
| RPM indicator | On the control panel |
| Speed controller | On the control panel |
| Loading arrangement | Loads the system and measures holding torque |
| Torque measurement | Rope brake arrangement for output and holding torque |
| Power supply | 230 V AC stabilised |
| Floor space | About 1.5 x 2 m |
| Manufacturer | Science Lab Supplies, Saha, Ambala, Haryana |
| Country of origin | India |
Applications and Experiments for the Epicyclic Gear Train Apparatus
Students measure the gear ratio between input and output shafts and between input shaft and holding drum, then load the train and record input, holding and output torque. Checking that the three torques balance confirms the theory of epicyclic gearing used in automatic gearboxes and differentials.
- Epicyclic gear ratio between input shaft and output shaft.
- Epicyclic gear ratio between input shaft and holding drum.
- Measurement of input torque, holding torque and output torque, contrasted with load-cell torque measurement on the Universal Dynamometer.
- B.Tech/B.E. mechanical Theory of Machines and TVET automotive transmission modules, after velocity-ratio basics on the Pulley Kit.
Keep hands clear of gears and brakes while running.
Standard Scope of Supply
Each rig comprises the external type gear train with holding drum and handle, the compact internal type gear train, bearing blocks for the input and output shafts, the variable-speed DC motor, the rope brake arrangement and the control panel with ammeter, voltmeter, RPM indicator and speed controller.
Packing, MOQ and Lead Time
You may request one rig or several for a mechanical engineering lab; the quotation gives packing, delivery time and price for the quantity. Belt-drive and gear-profile apparatus from this TVET lab equipment supplier can be quoted alongside it.
As a registered exporter with an Importer-Exporter Code, Science Lab Supplies can ship to buyers in Egypt, Iraq, Nigeria, Kenya, Ghana and Ethiopia. The business is registered under Udyam as a manufacturing enterprise (UDYAM-HR-01-0014546) and for GST (GSTIN 06ADEPJ0574F2ZU). If you are planning a transmission bench, outline it on the contact page, list the rig with companion units in the enquiry cart, or follow the lab tender page for tenders.
Frequently Asked Questions
What is holding torque in an epicyclic gear train?
It is the torque needed to hold one member, here the drum, stationary while power flows from input to output. Input, output and holding torques together must balance.
Which gear trains are included with the Epicyclic Gear Train Holding Torque Apparatus?
Two are provided: an external type train with a holding drum and handle, and a compact internal type train, so students can compare both arrangements on one rig.
Is Science Lab Supplies the manufacturer or a trader?
It is the manufacturer. Science Lab Supplies builds the rig in Saha, Ambala, India, which lets buyers settle design questions and quotations with the factory itself.
What does the lab need to run it?
It needs a 230 V AC stabilised power supply and a floor space of about 1.5 x 2 m, with room around the rope brakes for safe loading.
Related Gearing and Transmission Apparatus
Gear trains are taught with other power-transmission and gearing experiments. These items from the Theory of Machine Lab Equipments, Engineering Science and Fluid Mechanics ranges cover belt slip, tooth generation, interference, drive kits, pump gearing and rotating dynamics on one quotation.
- Slip and Creep Measurement Apparatus — driven pulley slides on its base to change the initial belt tension.
- Generation of Involute Gear Tooth Profile — module 25 mm profiles for three gear sizes reveal undercutting.
- Interference and Undercutting — shows smooth working of undercut teeth when the board is rotated anticlockwise.
- Motorised Gyroscope Apparatus — weights on a platform apply torque to the rotor as a gyroscopic couple.
- Drive Systems Kit — introduces gear ratio, pulley ratio and efficiency on a work panel.
- Gear Pump — tested in one direction, set by the Universal Dynamometer on the pump module.
- Rotational Friction Kit — different bearings show how rotational friction affects efficiency.
Browse the full Theory of Machine Lab Equipments range, the Engineering Science range for gear, drive and friction kits, or all TVET lab equipment.
Last updated: 9 October 2026
