NSK MEGATORQUE M-ESB-YSB2020AB300 - Axial Load and Moment Load

— 2-15 —
B
B
3
3
t
t
y
y
p
p
e
e
B
B
5
5
t
t
y
y
p
p
e
e
2.5. Motor Specifications
2.5.2. How to Calculate Axial Load and Moment Load
2
2
3
3
t
t
y
y
p
p
e
e
2
2
5
5
t
t
y
y
p
p
e
e
2.5.2. Axial Load and Moment Load
l Followings show how to calculate axial and moment loads.
Figure 2-15
L
F
(1) If F is an external force, then
l Axial load Fa = F + weight of payload
l Moment load M = 0
F
(2) If F is an external force, then
l Axial load Fa = F + weight of payload
l Moment load M = F × L
F
(3) If F is an external force, then
l Axial load Fa = F + weight of pauload
l Moment load M = F × (L + A)
L
A
！
Caution : Axial load Fa and Moment load M shall be less than the allowable axial
load and moment load respectively.
Table 2-9: Dimension A (Distance between the bearing and the rotor surface)
Motor reference
number
M-YSB2020KN001
M-YSB2020JN001
M-YSB2020KG001
M-YSB2020JG001
M-YSB3040KN001
M-YSB3040JN001
M-YSB3040KG001
M-YSB3040JG001
M-YSB4080KN001
M-YSB4080JN001
M-YSB4080KG001
M-YSB4080JG001
M-YSB5120KN001
M-YSB5120JN001
M-YSB5120KG001
M-YSB5120JG001
Dimension A [mm]
61.5 72.5 46 46.5