Sumitomo Cyclo BBB4 - Page 12

Cyclo® BBB4
Operation & Maintenance Manual 11
Cyclo® BBB4
Installation onto Driven Shaft, continued
Taper-Grip® Bushing
Bushing
Flange
Feeler Gauge
Thrust Collar
1
6
4
2
5
3
Apply grease
to exposed
portion of
driven shaft.
10
Screw Bolts into Taper-Grip® bushing.
• Lightlyoilthreadsofeachboltbeforeinserting.
• Fingertighteneachbolttosecureinplace.
• Besuretomaintain the 1 mm (approximate) gap between the thrust collar
and the bushing flange.
11
Tighten bushing bolts to the correct torque value.
• Followingastarpattern,useatorquewrenchtogradually tighten each socket
head cap screw in 20% increments.
• RefertoTable 2, Taper-Grip® Bushing Bolt Tightening Torques, for the correct
operational screw torques.
Table 2. Taper-Grip® Bushing Bolt Tightening Torques
12
In order to prevent corrosion, apply grease to the exposed portion of the driven shaft.
•  After installing and tightening the bushing bolts with a torque wrench, apply
grease or an anti-corrosion product to the exposed portion of the shaft.
13
After the reducer has been running for 20 to 30 hours, re-torque the screws to the
values in Table 2. Screw torques should be subsequently checked at normal service
intervals (i.e. every 6 months).
14
For units that include a bushing safety cover, reinstall the guard over the
Taper-Grip® bushing.
Do not operate unit until the torque arm has been attached to the unit and
fixed to a rigid structure. The torque arm prevents counter-rotation during
unit operation. Refer to torque arm Installation section in this manual for
instructions.
Cyclo® BBB4 Size Screw Qty x Size
Screw Torque
lb•ft (N•m)
4A 6 x M12 56 (75)
4B 6 x M12 104 (140)
4C 6 x M16 185 (250)
4D 6 x M16 223 (300)
4E 8 x M16 223 (300)
4F 10 x M16 223 (300)