Sumitomo Cyclo BBB4 - Page 22

Cyclo® BBB4
Operation & Maintenance Manual 21
Cyclo® BBB4
3
Follow these steps to attach the customer supplied mounting bracket.
• Placerubberbushingandmountinganglebracketonbolt.
• Verifythatthemountinganglebracketholeisthecorrectdiameter(seeTable13
in Step 1).
• Placeremainingbushing,washerandtwonutsonthebolt.
Do not over-tighten nuts. Tighten to point where rubber bushings can
still be hand rotated.
4
Confirm that the rubber bushings can still be rotated by hand. This indicates the
bushing has not been over tightened.
Compressed bushings will not allow the bushings to properly absorb the
loads of the shaft mounted gearbox. This can lead to premature failure.
Mounting Angle Bracket must be secured to the machine structure.
5
Confirm the mounting angle bracket does not interfere with the torque arm.
There should be no metal-to-metal contact between the two during a complete
revolution of the driven equipment.
Metal-to-Metal contact between these two components may lead to
catastrophic failure of the reducer/gearmotor.
Torque Arm Installation, continued
FlangeMount(Banjo)TypeTorqueArm
Washer
Mounting Angle
Bracket(CustomerSupplied)
Rubber Bushings
Nuts
(CustomerSupplied)
During full rotation of driven shaft, there must be
no metal-to-metal contact between mounting angle
bracket and torque arm.
Unit Size Bracket Tab Bore Typical Bolt Size
[1]
4A Ø18mm M16
4B Ø18mm M16
4C Ø22mm M20
4D Ø26mm M24
4E Ø33mm M30
4F Ø39mm M36
Table13.FlangeMount(Banjo)TorqueArmBoltDimensions
Note: [1] Bolt class should be greater or equal to ISO/JIS Class 8.8. Application with multiple start/stops and/or shock
loading should use ISO/JIS 10.9 at a minimum.