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 TM 220 Belt Friction Apparatus
 Technical Description

This benchtop 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
 Specification [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, polyamideV-belt- ISO 4184- profile: SPZ- 9.7x8.0mm, rubber/fabricRound belt: 3mm, hemp Belt pulley - D=300mm- material: cast ironDynamometer: 100N ±1N, spring balance Dimensions and Weight l x w x h : 700 x 350 x 1050 mmWeight : approx. 47 kg Scope of Delivery 1 stand2 flat belt1 round belt1 V-belt 2 dynamometers1 instruction manual Order Details 040.22000  TM 220  Belt Friction Apparatus
 © 2005 G.U.N.T. Gerätebau GmbH