Rockwell Automation 1329I Integrated AC Drive/Motor, Series B FRN 3.X - Manual (Page 21)

1329I-5.5 Integrated Drive/Motor — January, 2000
Chapter
3
Step 3 - Mount the Unit
Mount the unit on a foundation sufficiently rigid to guard against excessive vibration.
The unit may be mounted at any orientation. After carefully aligning the 1329I unit with
the driven machinery, bolt securely in place.
When the unit is mounted vertically, it may be necessary to use additional guards to
prevent foreign objects from falling into the motor fan openings and striking rotating
parts.
Mounting dimensions are provided on the following pages of this chapter.
3.1 Mounting Guidelines for Face-Mounted Motors
Use the following guidelines when mounting 56C and 140C face-mounted motors:
• Before mounting a C-face motor to the mating flange, be sure both surfaces and all
mounting holes are smooth and free of debris.
• When mounting into a quill-type reducer, make sure the input and output shafts are
coated with an anti-seize compound suitable for the application.
• When mounting through a flexible coupling, make sure that there is adequate
clearance between the driven equipment shaft, the coupling interface, and the motor
shaft. Insufficient clearance may result in binding of the shafting and premature
bearing failure.
• Always slide the motor tenon into the mating flange to its full depth before
tightening the mounting bolts. Do not allow the motor to hang by the shaft
extension while assembling it to the driven equipment (for example, a quill input
gear case) as this may bend or crease the shaft and damage any seals that are
present.
• Make sure to use the proper mounting bolts. For 56C and 140C motors, these
should be 9.5 mm (0.375 in, 16 threads per inch) and sized for length such that
engagement into the motor flange does not exceed 14.3 mm (0.563 in).
For example, a gearcase with a 9.5 mm (0.38 in) flange thickness requires a bolt
that is 9.5 mm (0.38 in) + 14.3 mm (0.56 in). That is, 23.8 mm (0.94 in) should be
the maximum bolt length. Since 23.8 mm (0.94 in) is not a standard bolt length, a
22.2 mm (0.88 in) bolt or a 25.4 mm (1.0 in) bolt with a lock washer can be used.
Important: Using a bolt that is too long may cause damage to the motor resulting in
premature failure and/or a loose assembly.