Sympthoms of rotary drums typical problems

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)

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))

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))

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)

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)

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)

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)

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))

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))

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))