Omron OMNUC FND Series User Manual page 243

Specifications
Note 4. The allowable radial load indicates the value at a location 5 mm from the end of the shaft. (See
the diagram below.)
Note 5. The allowable radial load and the allowable thrust load are the values determined by taking a
service life of 20,000 hours at normal usage as the standard.
j Torque and Rotation Speed Characteristics
(Standard Cable: 3 m; 200/100-VAC Input)
R88M-U03030HA/TA
R88M-U03030VA/XA
Repeated
used area
Continuous op-
eration area
R88M-U20030HA/TA
R88M-U20030VA/XA
Repeated
used area
Continuous op-
eration area
j Servomotor and Mechanical System Temperature Characteristics
U-series AC Servomotors use rare earth magnets (neodymium–iron magnets). The temperature co-
efficient for these magnets is approximately -0.13%/ C. As the temperature drops, the Servomotor's
momentary maximum torque increases, and as the temperature rises the Servomotor's momentary
maximum torque decreases. When the normal temperature of 20 C and -10 C are compared, the
momentary maximum torque increases by approximately 4%. Conversely, when the magnet warms
up to 80 C from the normal temperature of 20 C, the momentary maximum torque decreases by
approximately 8%.
5-20
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Radial load
Thrust load
5 mm
R88M-U05030HA/TA
R88M-U05030VA/XA
Repeated
used area
Continuous op-
eration area
R88M-U40030HA/TA
R88M-U40030VA/XA
Repeated
used area
Continuous op-
eration area
Chapter 5
R88M-U10030HA/TA
R88M-U10030VA/XA
Repeated
used area
Continuous op-
eration area
R88M-U75030HA/TA
R88M-U75030VA/XA
Repeated
used area
Continuous op-
eration area