This table unit enables experiments to be performed on belt drives and belt friction. The core of the unit is a cast iron pulley with grooves in its circumference for V-belts and flat belts. The pulley is mounted in ball bearings and is operated with a hand crank. The inertia of the pulley contributes to even rotation. The belts grip the pulley at an angle of contact from 30° to 180° in 15° steps. Two spring balances measure the tensile forces at each end of the belt. The belt tension can be precisely adjusted using a threaded spindle.
Learning Objectives / Experiments
- Influence of angle of contact, coefficient of friction and belt force (Eytelwein's rope friction formula) - Comparison flat belts - V-belts - Consequences of an incorrectly aligned belt
Features
* Friction of V-belts and flat belts on metal pulleys
[1] Experiment on belt friction and belt drives [2] Portable benchtop unit with metal stand [3] 2 flat belts, 1 V-belt, and 1 round belt [4] Ball bearing mounted belt pulley with three different belt grooves [5] Angle of contact of the belts 30°...180°, graduations 15° [6] Force measurement using 2 spring balances [7] l x w x h 700x350x1050mm
Technical Data
Flat belt:
- 15x2.2mm, leather/polyamide
- 15x0.6mm, polyamide V-belt:
- ISO 4184
- - profile: SPZ
- 9.7x8.0mm, rubber/fabric Round belt: 3mm, hemp Belt pulley:
- D=300mm
- material: cast iron Dynamometer: 100N ±1N, spring balance
Dimensions and Weight
l x w x h : 700 x 350 x 1050 mm Weight : approx. 47 kg
