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MT 171: Assembly Exercise: Hydrodynamic Journal Bearing

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Assembly Exercise: Hydrodynamic Journal Bearing

Assembly Exercise: Hydrodynamic Journal Bearing Assembly Exercise: Hydrodynamic Journal Bearing

Product Details

Technical Description 
Journal bearings execute a sliding motion between a bearing journal and a bearing shell. This sliding motion is usually lubricated by an intermediate medium.
Hydrodynamic journal bearings give wear-free continuous duty for large diameters at high rotational speeds, and are suitable for high and shock-type loading. They are usually constructed as split bearings. Frictional heat occurring during operation must be dissipated by the lubricant.
MT 171 is a horizontally split hydrodynamic pedestal journal bearing. The bearing shells are supported from a face in the spherical bearing housing so as to ensure uniform transfer of any forces that arise to the bottom housing. The journal bearing is lubricated by a loose lubricating ring. Standard commercially available mineral oils can be used.
An auxiliary shaft is supplied together with the bearing as an aid to assembly and functional testing.
The practice kit MT 171 forms part of the GUNT assembly, maintenance and repair practice line designed for training at technical colleges and in company training centres.
A close link between theory and practice is key to the learning content.

MT 171 enables a hydrodynamic journal bearing to be assembled and disassembled. Students become familiar with all the components and their modes of operation. The parts are clearly laid out and well protected in a tool box. The accompanying material details the individual steps involved in assembly, and provides additional information on the areas of application, mode of operation and design of the journal bearing.

Learning Objectives / Experiments

- Design and function of a hydrodynamic journal
- Principles of lubrication and sealing elements
- Assembly and disassembly, including for the
  purposes of maintenance and repair
- Reading and understanding engineering drawings
  and operating instructions

* Practical exercise based on the assembly of a
  hydrodynamic journal bearing1
* Comprehensive and well-structured instructional


[1] Learning concept for assembly exercises on an upright hydrodynamic journal bearing
[2] Journal bearing to DIN 31690
[3] Stainless steel drive shaft
[4] Oil lubrication
[5] Floating edge seal to seal the face of the shaft
[6] Sealing of contact faces of housing halves with non-setting sealing compound
[7] Complete assembly tool kit
[8] Journal bearing parts and tools housed in a sheet-steel tool box
[9] The kit forms part of the GUNT assembly, maintenance and repair practice line

Technical Data
Bearing bore: D=80mm
Drive shaft: nominal diameter: D=80mm
- bearing housing: grey cast iron
- bearing shells: steel supports, coated with white
- seal: ultra-heat-resistant, fibre-reinforced plastic
- shaft: stainless steel
Dimensions and Weight
l x w x h : 690 x 360 x 312 mm (box)
Weight : approx. 60 kg

Scope of Delivery
1 complete set of hydrodynamic journal bearing parts 1 drive shaft
1 set of tools, consisting of:
- 1 set of Allen keys, size 3, 5, 10, 22
- 1 torque wrench
- 1 soft-faced hammer
- 1 punch, 5mm
1 tube of non-setting sealing compound
1 rectangular box for small parts
1 sheet-steel tool box with foam inlay
1 set of instructional material, consisting of:
  technical description of system, complete
  set of drawings with individual parts and parts list,
  description of assembly and disassembly
  processes, also in relation to repair operations
Order Details
051.17100  MT 171  Assembly Exercise:
                      Hydrodynamic Journal Bearing

Alternative products
MT 110.02 -- Assembly Exercise: Spur Wheel / Worm Gear Mechanism
MT 140.02 -- Assembly Exercise: Piston Compressor
MT 152 -- Assembly Exersise: Spur Gear
MT 156 -- Assembly Exercise: Gate Valve and Angle Seat Valve
MT 170 -- Assembly Exercise: Shaft with Journal Bearings
MT 180 -- Assembly & Maintenance Exercise: Centrifugal Pump
TM 290 -- Hydrodynamic Bearing Apparatus

SELKA GmbH, Hamburg
Grindelallee 188, 20144 Hamburg / Germany
Tel.: + 49 (0) 40 343453 |  Fax: +49 (0) 40 63657075
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