ideal observation of the function thanks to transparent bearing housing

Description:

• In hydrodynamic journal bearings, the shaft and the bearing shell are separated from each other by a lubricating film during operation.
• The supporting function of the lubricating film in a journal bearing can be described by the pressure distribution in the bearing gap.
• The TM 280unit is used to visualise the pressure curve in the journal bearing with hydrodynamic lubrication.
• To do this, there are twelve measuring points around the circumference of the bearing shell and four measuring points in the longitudinal direction.
• The respective pressures can be read via 16 tube manometers with reference to the height of the liquid columns.
• The journal bearing comprises an electrically driven shaft journal that rotates in a freely movable bearing housing.
• Oil is used as the lubricant.
• The displacement of the shaft journal depends on the speed and direction of rotation as well as the characteristic behaviour during start-up, and can be observed through the transparent bearing housing.
• Speed and direction can be adjusted.
• The load on the journal bearing can be adjusted by varying the weights.
• The temperature in the bearing gap is measured in order to determine the viscosity of the lubricant.

Technical Details:

Specifications:

• visualisation and investigation of pressure distribution in journal bearings
• bearing housing is completely transparent
• continuously adjustable speed, electronically controlled
• bearing subjected to load by means of weights
• temperature measurement in the bearing housing
• 12 measuring points on the periphery, 4 measuring points in the longitudinal direction
• pressure distribution indicated with 16 tube manometers
• digital display of speed on the display and control unit

Technical Data:

• Bearing:
  • nominal bearing diameter: 51mm
  • bearing gap width: 4mm
  • bearing width: 75mm
  • bearing load: 6,7…16,7N
• Motor:
  • power: 0,37kW
  • speed: 3000min^-1
• Oil ISOviscosity grade: VG 32
• Tank for oil: 2,5L
• Weights:
  • 1x 1N (hanger)
  • 2x 2N
  • 1x 5N
• Measuring ranges:
  • pressure: 1770mm oil column, 16x
  • temperature: -10…50°C
  • speed: 0…3000min^-1
• 230V, 50Hz, 1 phase
• 230V, 60Hz, 1 phase; 120V, 60Hz, 1 phase
• UL/CSA optional

Dimensions & Weight:

• L x W x H: 1100x750x2650mm
• Weight: approx. 110kg

Learning Objectives/Experiments:

• visualization and investigation of instability in journal bearings
• displacement of the shaft journal as a function of the speed
• pressure distribution in the bearing under constant load and different speeds
• critical speed as a function of the load
• critical speed as a function of the oil temperature

Scope of Delivery:

• 1 trainer
• 1 display and control unit
• 1 set of tools
• 1 set of weights
• 1 hydraulic oil (5L)
• 1 handheld temperature measuring unit
• 1 set of instructional material

Features:

• clear representation of the pressure distribution in the journal bearing
• investigation and visualisation of instability in journal bearings

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