Installation
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24
4-7
Permissible moment, permissible axial load
The permissible moment and permissible axial load should not exceed the permissible value specified in the table.
Model
Output table supporting bearing
Permissible moment
Permissible axial load
DGM60
Deep-groove ball bearing
2 N·m
100 N
DGM85
Deep-groove ball bearing
6 N·m
200 N
DGM85R
Cross-roller bearing
10 N·m
500 N
DGM130
Deep-groove ball bearing
20 N·m
300 N
DGM130R
Cross-roller bearing
50 N·m
2,000 N
DGM200R
Cross-roller bearing
100 N·m
4,000 N
z
Example 1: When external force F is applied at distance L from the center of the output table
F [N]
L [m]
Load mass m [kg]
mg
Fulcrum
Load moment
∆
M [N·m]
Load moment [N·m]:
∆
M = F × L
Axial load [N]: Fs = F + m (load mass) × g (gravitational acceleration)
z
Example 2: When external forces F1 and F2 are applied at distance L from the mounting face of the
output table
F2 [N]
F1 [N]
L [m]
Constant a [m]
Load mass m [kg]
Fulcrum
Load moment
∆
M [N·m]
mg
Load moment [N·m]:
∆
M = F2 × (L + constant a)
Axial load [N]: Fs = F1 + m (load mass) × g (gravitational acceleration)
Model
Output table supporting bearing
Constant a
DGM60
Deep-groove ball bearing
0.01 m
DGM85
Deep-groove ball bearing
0.015 m
DGM85R
Cross-roller bearing
0.02 m
DGM130
Deep-groove ball bearing
0.016 m
DGM130R
Cross-roller bearing
0.03 m
DGM200R
Cross-roller bearing
0.04 m
