User guide

12 RDD-Series Rotary Direct Drive Bearingless Motor Installation Instructions

Publication RDB-IN002B-EN-P — February 2010

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-B2901

RDB-B2902

RDB-B2903

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-B2901

RDB-B2902

RDB-B2903

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-B4101

RDB-B4102

RDB-B4103

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.)