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TM 123: Spur Gear Lifting Apparatus

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Spur Gear Lifting Apparatus

Product Details

Technical Description 
The mechanism demonstrates the relationship between the ratio of the number of teeth on spur gears and the transmission ratio of gears. With straightforward experiments, the torque conversion in gear wheel pairs and the efficiency of a gear unit are investigated.
The model is intended for wall mounting. The well-structured instructional material outlines the technological fundamentals and provides a step-by-step guide through the experiments.

Learning Objectives / Experiments

Learning the key variables and correlations of a spur gear:
- Velocity ratios of spur gears
- Gear with intermediate wheel or two-stage gearing
- Influence of friction on transmission
- Determining efficiency
* Mode of operation and layout of toothed gearing


[1] Demonstration and student experimentation unit on the mode of operation and function of toothed gearing mechanisms
[2] 4 galvanised steel gear wheels
[3] 2 anodised aluminium cable pulleys
[4] 2 sets of weights
[5] Ball bearing-mounted gear wheels and pulleys
[6] Anodised aluminium base plate
Technical Data

4 gear wheels
- 2x D=126mm, 84 teeth
- 2x D=42mm, 28 teeth 
- modulus: m=2mm
Driving pulley radius: 35mm

Set of weights
- 2x 1N suspended
- 2x 0.25N
- 1x 0.5N
- 2x 1N
- 2x 2N
- 2x 2.5N
Base plate
- lxwxh: 350x150x10mm
Dimensions and Weight

l x w x h : 350 x 70 x 150 mm
Weight : approx. 5 kg
Scope of Delivery

1 gear unit, mounted on base plate
2 sets of weights
1 set of instructional material

Order Details

040.12300  TM 123  Spur Gear Lifting Apparatus

Alternative products
TM 110.03 -- Supplementary Kit Gear Systems
TM 121 -- Wheel and Axle Apparatus
TM 122 -- Wheel and Differential Axle Apparatus

SELKA GmbH, Hamburg
Grindelallee 188, 20144 Hamburg / Germany
Tel.: + 49 (0) 40 343453 |  Fax: +49 (0) 40 63657075
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