Technical information

62
230V FX Series Positioning Drive Reference Manual
Load Coupling
A flexible coupling must be used between the motor shaft and the load to minimize
mechanical stress due to radial loads, axial loads or misalignment. Radial and axial loading
cannot exceed specified values.
If you feel that the radial load rating for your installation will be exceeded, you may want to
consider connecting the DX motor to an idler shaft that is supported by pillow block bearings
(or similar). Then the load can be coupled to the idler shaft without risking damage to the DX
motor bearings.
Gear Reducer Oil
It is strongly suggested that a synthetic oil be used in worm gear speed reducers or rotary
tables. This will reduce the amount of friction in the mechanism and in turn reduce the amount
of current it takes to drive the motor. The typical lubricant shipped with most worm gear
speed reducers is equivalent to 90W and will cause heavy, unintended frictional loading to
the system.
All worm gear speed reducers shipped from EMERSON Motion Control contain synthetic oil
with a viscosity equivalent to 5W.
Synthetic lubricants are available for a wide range of applications. Call the EMERSON
Motion Control Applications Engineering department if you have any questions.
Inline parallel, spur, and helical gear reducers use a permanent grease type lubricant that coats
the moving surfaces and offers very low loss due to friction.