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RDD-Series Rotary Direct Drive Bearingless Motor Installation Instructions
Publication RDB-IN002A-EN-P — October 2009
Motor Dimensions
Dimension
mm (in.)
Motor Cat. No.
RDB-B2901
RDB-B2902
RDB-B2903
RDB-B4101
RDB-B4102
RDB-B4103
AD max
182.3
(7.18)
256.3
(10.09)
D
59.988… 59.999
(2.3617… 2.3622)
69.988…69.999
(2.7554…2.7559)
DB
69.988…69.999
(2.7554…2.7559)
79.988…79.999
(3.1491…3.1496)
E
(1)
(1)
Tolerance for this dimension is ±0.13 mm (0.005 in.).
43.94
(1.730)
88.14
(3.470)
124.71
(4.910)
40.39
(1.590)
83.82
(3.300)
118.62
(4.670)
EB
(2)
(2)
Tolerance for this dimension is ±1.50 mm (0.06 in.) static, ±0.05 mm (0.002 in.) dynamic.
89.92
(3.540)
134.11
(5.280)
170.69
(6.720)
114.05
(4.490)
167.89
(6.610)
253.49
(9.980)
F
11.957…12.000
(0.4707…0.4724)
G
24.80…24.99
(0.976…0.984)
29.80…29.99
(1.173…1.181)
GD
7.90…8.00
(0.311…0.315)
HD max
305.9
(12.05)
432.1
(17.01)
LA
(3)
(3)
Tolerance for this dimension is ±2.15 mm (0.085 in.).
22.2
(0.88)
25.4
(1.00)
LB
(4)
(4)
Tolerance for this dimension is ±2.3 mm (0.090 in.).
201.2
(7.92)
250.7
(9.87)
300.5
(11.83)
229.9
(9.05)
299.0
(11.77)
368.1
(14.49)
LE
135.74
(5.344)
185.34
(7.297)
234.95
(9.250)
164.08
(6.460)
233.17
(9.180)
302.26
(11.90)
M
(5)
(5)
Total Indicator Runout (TIR) is 0.76 mm (0.030 in.).
290.0
(11.417)
410.0
(16.142)
N
(6)
(6)
Tolerance for this dimension is ±0.02 mm (±0.001 in.).
232.94
(9.171)
333.96
(13.148)
