Exlar Curtiss-Wright Tritex II Series, Installation And Service Manual

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Curtiss-Wright | TRITEX II AC 75 Rev. K PN61928 7/12/2022 69
Lubrication Maintenance
Grease lubricated units will require periodic inspection and
renewal of the bearing and roller screw grease. The table below
shows the recommended grease renewal period.
RMS rotational
speed (RPM)
Recommended Grease Renewal Period (hours)
CASE TEMP 65°C (149°F) CASE TEMP 80°C (176°F)
250 10,000 5,000
500 8,500 4,250
1000 6,000 3,000
1500+ 3,500 1,750
Grease Renewal
The angular contact thrust bearings located in the front of the
actuator, the roller screw cylinder, and the roller screw assembly
are the components that require grease. They require a coating
of grease. They do not need to be packed with grease. Excess
grease requires more torque from the motor when returned to
operation, and does not improve the lubrication of the unit.
1. Use a brush to work approximately 0.5 in
3
of grease for
every 3 inches of stroke length into the roller screw
cylinder. Be sure to cover all of the threaded areas of the
cylinder.