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Sympthoms of rotary drums typical problems

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Increased temeprature of roller bearings

Potential reason (proposed audit/service):

- error of support system axis shape
  (A(T) or A+)
- incorrect skews of support rollers
  (A(A.11, T) or A+(T))
- bend of shell axis
  (B++, B+(T) or B(T))
- axial run-out of the rings
  (B+(T) or B(T))
- incorrect lubrication
  (individual selection)

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Crack of the shell

Potential reasons (proposed audit/service):

- error of support system axis shape
  (A(T) or A+)

- elastic ovalization of the shell (excessive underring clearance)
  (A, B.7(T))

- bend of shell axis
  (B++, B+,(T), or B(T))

- corrosion
 
(E.1(T))

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Crack of the support roller shaft

Potential reasons (proposed audit/service):

- error of support system axis shape
  (A(T) or A+)

- bend of shell axis

  (B++, B+(T) or B(T))

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Excessive wear of the roller/ring raceway

Potential reasons (proposed audit/service):

- error of support system axis shape
  (A(T) or A+)

- axial run out of the rings
  (B+(T) or B(T))

- incorrect raceway lubrication
  (individual selection)

- shape errors of the rollers/rings raceways
  (A.12)

  (grinding of raceways)



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Excessive wear of the ring stop-blocks

Potential reasons (proposed audit/service):

- incorrect skews of support rollers
  (A(A.11. T) or A+(T))

- elastic ovalization of the shell
  (A, B.7(T))

- axial run out of the rings
  (B+(T) or B(T))

- lack or incorrect lubrication

  (individual selection)



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Excessive wear of the under-ring pads

Potential reasons (proposed audit/service):

- elastic ovalization of the shell (excessive under ring clearance)
  (A,B.7(T))

- lack or incorrect lubrication
  (individual selection)



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Excessive wear of the thrust roller

Potential reasons (proposed audit/service):

- incorrect skews of support rollers
  (A(A.11. T) or A+(T))

- wrong position of thrust roller

  (D.3)



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Excessive wear of the gear teeth

Potential reasons (proposed audit/service):

- error of the support system axis shape

  (A(T) or A+)

- incorrect skews of support rollers
  (A(A.11. T) or A+(T))

- bend of shell axis

  (B++. B+(T) or B(T))

- incorrect lubrication

  (individual selection)

- misalignment of drive section components

  (D.1(T))
- damage to the elements of drive section

  (C.1(T) &/or D.2(T))

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Falling out of the lining

Potential reasons (proposed audit/service):

- error of support system axis shape
  (A(T) or A+)

- excessive under ring clearance

  (A, B.7(T))

- excessive elastic ovality of the shell
  (A, B.7(T))

- bend of shell axis
  (B++, B+(T) or B(T))

- axial run-out of the rings

  (B+(T) or B(T))

naped.jpg

Vibration on drive section / support rollers

Potential reasons (proposed audit/service):

- misalignment of the drive section elements
  (D.1(T))
- damage of the drive section components
  (C.1(T) &/or D.2(T))
- shape errors of the rollers and / or rings raceways
  (A.12)

  (grinding of raceways)

- bend of shell axis
  (B++, B+(T) or B(T))

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Gaps between rollers and rings raceways

Potential reasons (proposed audit/service):

- incorrect skews of support rollers
  (A(A.11. T) or A+(T))

- bend of shell axis
  (B++, B+(T) or B(T))
- axial run out of the rings
  (B+(T) or B(T))

- shape errors of support roller and/or ring raceway
  (A.12)

  (grinding of raceways)

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Instability of axial displacements of an object

Potential reasons (proposed audit/service):

- incorrect skews of support rollers
  (A(A.11. T) or A+(T))

- missalignment of drive section components
  (D.1(T))

- axial run out of the rings
  (B+(T) or B(T))

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Increased power consumption by the drive

Potential reasons (proposed audit/service):

- error of support system axis shape

  (A(T) or A+)

- incorrect skews of support rollers
  (A(A.11. T) or A+(T))

- bend of shell axis
  (B++, B+(T) or B(T))

- damage of drive section elements
  (C.1(T) &/or D.2(T))

- shape errors of support roller and/or ring raceway
  (A.12)

  (grinding of raceways)

Typical problems: Sektory
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