Mechanical Characteristics; Mechanical Strength; Allowable Radial Load And Allowable Thrust Load; Mechanical Tolerances - YASKAWA SGM Series User Manual

3.5 Mechanical Characteristics

3.5.1 Mechanical Strength

A Servomotor can withstand instantaneous peak torque on the output shaft of up to 300% of the
motor rating.

3.5.2 Allowable Radial Load and Allowable Thrust Load

The output shaft allowable loads for SGM and SGMP Servomotors are shown below.
Servomotor Servomotor
Model
SGM-A3
SGM-A5
SGM-01
SGM-02
SGM-03
SGM-04
SGM-08
SGMP-01
SGMP-02
SGMP-03
SGMP-04
SGMP-08
Note Radial and thrust load limit values are the sum of the loads generated by the mo-

3.5.3 Mechanical Tolerances

Tolerances for Servomotor output shaft and installation are shown in Table 3.2.
Perpendicularity between the flange
face and output shaft
Mating concentricity of flange O.D.
Run-out at the end of the shaft
* T.I.R. = Total Indicator Reading
Table 3.1 Allowable Radial Load and Allowable Thrust Load
Allowable Radial Load
Fr [N (lbf]
With With
Incremental Absolute
Encoder Encoder
68 (15) 49 (11)
68 (15) 68 (15)
78 (17) 68 (15)
245 (55) 196 (44)
245 (55) 196 (44)
245 (55) 196 (44)
392 (88) 343 (77)
78 (17) 78 (17)
245 (55) 245 (55)
245 (55) 245 (55)
245 (55) 245 (55)
392 (88) 392 (88)
tor torque and external loads applied to the shaft.
Table 3.2 Mechanical Tolerances
Tolerance (T.I.R.)*
A
B
C
3 -7
3.5 Mechanical Characteristics
Allowable Thrust Load
Fs [N (lbf)]
With With
Incremental Absolute
Encoder Encoder
54 (12) 19 (2)
54 (12) 19 (2)
54 (12) 19 (2)
74 (16) 49 (11)
74 (16) 68 (15)
74 (16) 68 (15)
147 (33) 98 (10)
49 (11) 49 (11)
68 (15) 49 (11)
68 (15) 49 (11)
68 (15) 49 (11)
147 (33) 49 (11)
Reference Diagram
0.04 mm
(0.0016 in)
0.04 mm
(0.0016 in)
0.02 mm
(0.00079 in)
Reference Diagram
5 (0.20) (0 20)
Fr F
Fs
3