friction in slide bearings and roller bearings

Description:

• Bearings can be classified as slide bearings or roller bearings depending on the nature of their motion.
• In slide bearings, there is a sliding motion between the bearing and the supported component.
• In roller bearings, there is both sliding motion and rolling motion between rolling bodies and the supported component.
• Sliding motion is undesirable in roller bearings, e.g., between rolling body and cage.
• The bearing force is transferred in the roller bearing by means of rolling.
• In both types of bearings—the slide bearing and the roller bearing—frictional forces occur during operation, which oppose resistance to the movement.
• The TM 232experimental unit allows investigations of friction on slide bearings with different bearing shells and on roller bearings.
• A shaft with a cable drum and flywheel is mounted on a base plate.
• The weight of the heavy flywheel generates bearing forces.
• A moment is applied by means of weights, which is equal to the friction moment at the start of the rotation.
• Replaceable bearing shells are used as slide bearings.
• The coefficients of friction are determined in experiments.
• Bearing shells made of different materials are included in the scope of delivery in order to study different friction pairings.
• The bearing friction is very low when using the roller bearing.
• In this case, the flywheel can be used for basic experiments on rotational dynamics.
• The experimental unit is designed to be fixed to a wall.
• The parts of the experiment are clearly laid out and securely housed in a storage system.

Technical Details:

Specifications:

• comparison of dynamic friction and rolling friction
• experiments on rotational dynamics are possible
• bearing shells of different materials as slide bearings
• steel flywheel, galvanised
• drive via cable drum and weights
• storage system for parts
• bracket for wall mounting

Technical Data:

• Bearing shells as slide bearing, half-shells:
  • GG-25
  • red bronze
  • PTFE(Teflon)
• Deep-groove ball bearing:
  • type 6203
• Shaft bearing journal:
  • Ø=17mm
• Flywheel:
  • Ø=300mm
  • weight: 22,2kg
• Weights:
  • 1x 1N (hanger)
  • 5x 1N
  • 1x 2N
  • 3x 5N
• Base plate:
  • L x W: 250x200mm

Dimensions & Weight:

• L x W x H: 200x330x300mm
• Weight: approx. 30kg
• L x W x H: 290x140x130mm (storage system)

Learning Objectives/Experiments:

• determine the frictional moment in slide bearings with various friction pairs
• determine the frictional moment of a rolling bearing
• comparison of slide and rolling bearings
• basic experiments on rotational dynamics

Scope of Delivery:

• 1 experimental unit
• 6 bearing shells
• 2 roller bearings
• 1 set of weights
• 1 storage system
• 1 set of instructional material

Features:

• friction in slide bearings and roller bearings
• interchangeable bearing shells for slide bearings of different materials

Due to the continuous development of our products, the goods supplied may vary in detail to that illustrated on this Website.