Sumitomo Cyclo BBB4 - Keyed Hollow Bore

Quick Start Guide Cyclo® BBB4 9
Keyed Hollow Bore Installation onto
Driven Shaft
1
Apply molybdenum disulfide grease or similar anti-seize compound,
to the driven shaft surface and inside the reducer keyed hollow bore.
2
Align the driven shaft with the reducer/gearmotor bore and carefully
slide unit onto the driven shaft.
If the fit is tight, strike on the keyed hollow bore with a soft
mallet to assist in the assembly.
If using a soft mallet during installation, strike only against
the unit’s steel keyed hollow bore. Do not strike the reducer
housing or oil seal, damage to the bearings, the housing,
and/or the seals may occur.
Note: If the fit is tight, you may use a jig such as the one shown here
to ease assembly. Sumitomo does not supply a mounting jig. This
information is provided for reference only.
Grease
Size
a b c d e
CC (ISO/JIS) A2 Bearing Nut Threaded Rod
4A 3 25 51104 M16 M16 x 250
4B 65 25 51105 M20 M20 x 300
4C 75 25 51105 M20 M20 x 300
4D 85 35 51107 M24 M24 x 400
4E 100 35 51107 M24 M24 x 400
4F 120 46 51109 M30 M30 x 450
Table 3. Jig Dimensions
Spacer b
Retaining Ring a
Ball
Bearing
c
Threaded Rod e
Nut d
A2
Unit: mm