TM 232 provides experiments relating to friction on sliding and rolling bearings. Bearing shells in various materials serve as sliding bearings. Bearing forces are generated by the dead-weight of a heavy flywheel. A torque is applied by means of weights which correspond to the frictional torque when the motion begins. When the rolling bearings are used the bearing friction is very low. In this case the flywheel can be used for fundamental experiments in rotational dynamics.
The unit is intended for mounting on a laboratory wall.
Learning Objectives / Experiments
- Determination of friction torque on sliding bearings: various meterial
pairings by means of interchangeable bearing shells - Determination of the friction torque on a rolling bearing - Comparison between sliding and rolling bearing - Fundamental experiments in rotational dynamics
* Sliding bearing friction with different bearing
materials; comparison with rolling bearing friction
 Experiment in sliding bearing friction with various material pairings and comparison with rolling bearings  3 different bearing materials for sliding bearing shells  Stainless steel shaft  Flywheel of galvanised steel  Drive by cable drum and weight set  Base plate of anodised aluminium  Experiments in rotational dynamics possible  Box to house the components
Sliding bearing half-shell material - GG-25 - gunmetal - PTFE (Teflon) Grooved ball bearing: type 6203 Bearing journal of shaft: d=17mm
Flywheel - d=300mm - weight: 22,2kg
Weights - 1x 1N (hanger) - 5x 1N - 1x 2N - 3x 5N
Base plate, l x w x h: 250x200x12mm
Dimensions and Weight
l x w x h: 200x330x300mm Weight: approx. 30kg
Scope of Delivery
1 experimental unit 6 bearing shells 2 rolling bearings 1 set of weights 1 storage box with foam inlay 1 set of instructional material