Rockwell Automation RDD-B2153 Rotary Direct Drive Bearingless Motors - Manual (Page 11)

RDD-Series Rotary Direct Drive Bearingless Motor Installation Instructions 11
Publication RDB-IN001A-EN-P — October 2009
RDB-B2151, RDB-B2152, RDB-B2153 Machine Mounting Dimensions
Attribute Value
Pilot diameter 163.989…164.014 mm (6.4563…6.4372 in.)
Shaft diameter, small 70.985…71.000 mm (2.7947…2.7953 in.)
Shaft diameter, large 71.985…72.000 mm (2.8340…2.8346 in.)
Shaft length, small
RDB-B2151
RDB-B2152
RDB-B2153
48.60…49.40 mm (1.915…1.945 in.)
82.60…83.40 mm (3.255…3.285 in.)
116.60…117.40 mm (4.595…4.625 in.)
Shaft length, overall
RDB-B2151
RDB-B2152
RDB-B2153
103.87…104.13 mm (4.031…4.149 in.)
137.87…138.13 mm (5.371…5.489 in.)
171.87…172.13 mm (6.711…6.829 in.)
Shaft runout 0.13 mm (0.005 in.) max
Pilot concentricity 0.10 mm (0.004 in.) max
Mounting surface perpendicularity 0.10 mm (0.004 in.) max