Sharp SW-180NC, Instruction Manual

Page: 92 / 126

9-10
#12. Heavy Wear And/Or Swagging On Back Edge
Probable Cause :
A.
Excessive feed rate.
B. Excessive back-up guide "preload".
C. Improper band tracking – back edge rubbing
heavy on wheel flange.
D. Worn or defective back-up guides.
#13. Butt Weld Breakage
Probable Cause :
A.
Any of the factors that cause body breaks can also
cause butt weld breaks.
(See Observations #5, #15 and #16)
#14. Heavy Wear In Only The Smallest Gullets
Probable Cause :
A.
Excessive feeding rate.
B. Too slow of band speed.
C. Using too fine of a tooth pitch for the size of material
being cut.
#15. Body Breaking – Fracture Traveling In An Angular Direction
Probable Cause :
A.
An excessive twist type of stress existed.
B. Guide arms spread to capacity causing
excessive twist from band wheel to guides.
C. Guide arms spread too wide while cutting
small cross sections.
D. Excessive back-up guide "preload".