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RDD-Series Rotary Direct Drive Bearingless Motor Installation Instructions
Publication RDB-IN002A-EN-P — October 2009
RDB-B2901, RDB-B2902, RDB-B2903 Machine Mounting Dimensions
RDB-B4101, RDB-B4102, RDB-B4103 Machine Mounting Dimensions
Attribute
Value
Pilot Diameter
232.92…232.96 mm (9.170…9.172 in.)
Shaft Diameter, Small
59.988…59.999 mm (2.3617…2.3622 in.)
Shaft Diameter, Large
69.988…69.999 mm (2.7554…2.7559 in.)
Shaft Length, Small
RDB-B
xxx
1
RDB-B
xxx
2
RDB-B
xxx
3
43.81…44.07 mm (1.725…1.735 in.)
88.01…88.27 mm (3.465…3.475 in.)
124.58…124.84 mm (4.905…4.915 in.)
Shaft Length, Overall
RDB-B
xxx
1
RDB-B
xxx
2
RDB-B
xxx
3
89.42…91.42 mm (3.480…3.600 in.)
132.61…135.61 mm (5.220…5.340 in.)
169.19…172.19 mm (6.660…6.780 in.)
Shaft Runout
0.038 mm (0.0015 in.) max
Pilot Concentricity
0.05 mm (0.002 in.) max
Mounting Surface Perpendicularity
0.05 mm (0.002 in.) max
Attribute
Value
Pilot Diameter
333.94…333.98 mm (13.147…13.149 in.)
Shaft Diameter, Small
69.988…69.999 mm (2.7554…2.7559 in.)
Shaft Diameter, Large
79.988…79.999 mm (3.1491…3.1496 in.)
Shaft Length, Small
RDB-B
xxx
1
RDB-B
xxx
2
RDB-B
xxx
3
40.26…40.52 mm (1.585…1.595 in.)
83.69…83.95 mm (3.295…3.305 in.)
118.49…118.75 mm (4.665…4.675 in.)
Shaft Length, Overall
RDB-B
xxx
1
RDB-B
xxx
2
RDB-B
xxx
3
112.55…115.55 mm (4.430…4.550 in.)
166.39…169.39 mm (6.550…6.670 in.)
251.99…254.99 mm (9.920…10.040 in.)
Shaft Runout
0.038 mm (0.0015 in.) max
Pilot Concentricity
0.05 mm (0.002 in.) max
Mounting Surface Perpendicularity
0.05 mm (0.002 in.) max
