Sumitomo Cyclo BBB4 - Removal of Cyclo BBB4 with Shrink Disc

26 Operation & Maintenance Manual
Cyclo® BBB4
Cyclo® BBB4
2
Apply a liquid penetrant to the shaft where it contacts the keyed hollow bore.
Allow time for the liquid to penetrate between the shaft and the wall of the keyed
hollow bore.
3
Once the penetrant has settled adequately, carefully remove the Cyclo® BBB4 from
the driven shaft.
Removal of Cyclo® BBB4 with Shrink Disc
Before starting unit removal process, ensure that electrical power to unit has
been safely locked out and that electrical connections to the unit have been
disconnected.
1
Remove the safety cover and apply liquid penetrant to the shrink disc bolts and
shaft/bore allowing adequate time for proper penetration.
Loosen the locking bolts on the shrink disc.
Complete bolt removal should not be required.
Tapping the shrink disc flanges with a rubber dead blow hammer may be required if
any fretting corrosion has occurred.
2
Remove the gearbox from the shaft.
If shaft removal is difficult, a jig such as the one shown in the Removal of Cyclo®
BBB4 with Taper-Grip® Bushing section may be used to ease the removal process.
Sumitomo does not supply the removal jig. This information is supplied for
reference only.
Removal from Driven Shaft, continued
Removal of Cyclo® BBB4 with Shrink Disc