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TM 122 Wheel and Differential Axle Apparatus
Education / GUNT Hamburg / Engineering Mechanics and Machine Elements / Dynamics /

The model demonstrates the conditions of equilibrium on a differential pulley block. Three anodised aluminium pulleys of different diameter are fitted to a shaft mounted on ball bearings. The forces act, on the one hand, directly on the peripheral of the largest pulley, on the other hand, via a loose pulley on two smaller pulleys. Easy to interchange weights permit the load to be varied such that equilibrium is obtained. The model is intended for wall mounting.


Learning Objectives / Experiments
- Equilibrium of forces
- Equilibrium of moments
- Relationship between force reduction and cord travel

[1] Experiment on the equilibrium of forces and moments on a differential pulley block
[2] 3 pulleys made of anodised aluminium
[3] 2 sets of weights
[4] Ball bearing mounted steel shaft
[5] Anodised aluminium base plate

Technical Data

Pulley diameter
- D=250mm

- D=100mm

- D=50mm

Loose pulley

- D=75mm


Set of weights

- 2x 1N (hanger)

- 4x 0.5N

- 4x 1N

- 4x 2N

- 4x 5N


Base plate

- wxh: 300x250mm
- hole spacing: 280x230mm, D=10mm


Dimensions and Weight
l x w x h: 300 x 280 x 250 mm
Weight: approx. 15 kg
Scope of Delivery

1 support with pulleys

set of weights
1 loose pulley

2 cords

1 instruction manual

Order Details

040.12200  TM 122  Wheel and Differential Axle Apparatus