Permissible Load For The Shaft - Mitsubishi Electric GENERAL PURPOSE AC SERVO MR-E- A/AG Instruction Manual

14. SERVO MOTOR

14.4.4 Permissible load for the shaft

(a) Use a flexible coupling and make sure that the misalignment of the shaft is less than the
permissible radial load.
(b) When using a pulley, sprocket or timing belt, select a diameter that will fit into the permissible
radial load.
(c) Excess of the permissible load can cause the bearing life to reduce and the shaft to break.
(d) The load indicated in this section is static load in a single direction and does not include eccentric
load. Make eccentric load as small as possible. Not doing so can cause the servo motor to be
damaged.
(1) Without reduction gear
Servo Motor
053 / 13
HC-KFE 23 / 43
73
52 to 152
HC-SFE
202
Note : For the symbols in the table, refer to the following diagram:
L
(2) With reduction gear
The permissible radial loads in the table are the values at the center of the reduction gear output
shaft.
(a) HC-KFE series
1) General industrial machine-compliant
Item
Permissible Radial Load
Permissible Thrust Load
POINT
Do not use a rigid coupling as it may apply excessive bending load to the
shaft, leading to shaft breakage.
(Note ) L
[mm] [in]
25 0.98
30 1.18
40 1.57
55 2.17
79 3.11
Radial load
Thrust load
L: Distance from flange mounting surface to load center
Gear HC-KFE13(B)
ratio
1/5
1/12
[N]
1/20
1/5
[lb] 1/12
1/20
1/5
[N] 1/12
1/20
1/5
[lb]
1/12
1/20
Permissible Radial Load
[N]
88
245
392
980
2058
Q/ 2
Q
HC-KFE23(B)
G1 G1
150
240
370 780
34
54
83 175
200
320
450 780
45
72
101 175
14 - 8
Permissible Thrust Load
[lb] [N]
20 59
55 98
88 147
220 490
463 980
HC-KFE43(B) HC-KFE73(B)
G1
330
710
760
74
160
171
350
720
760
79
162
171
[lb]
13
22
33
110
220
G1
430
620
970
97
139
218
430
620
960
97
139
216