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• The condition of the nut must be monitored to ensure
that wear of the main nut is never such that the follower
nut is needed to support the load.
• The state of wear of the main nut can be checked by
monitoring the following three conditions:
a. The gap distance, h: If the gap reduces by 0.5mm from
that measured when first installed, the nut should be
replaced.
b. The torque required to turn the worm gear shaft: If the
torque required reaches a level of 40Ncm (60 oz.in), the
nut should be replaced.
c. The free play of the follower nut on the pin connecting
it to the main nut: If the follower nut has no free play on
the pin, the nut should be replaced.
4.1.6 Lubrication
Warning
: Lubricants used in this product may cause irritation to sensitive skin. Wear protective
clothing.
Note that Carbaflo grease discolours with time, particularly where regular bakeouts are applied to the
equipment. This is normal and does not affect the behavior of the lubricant.
a. Z slide lead screw, linear guide shafts, worm and wheel gears:
Clean dirty and excess grease off the components. Lubricate with Carbaflo grease, ensuring that all
contact surfaces are covered by a film of grease. Should the slide develop a dry squeak, lubricate
immediately.
Warning
: Keep clear of moving parts.
b. Z slide hall bearings (drive screw and worm drive shaft):
Use a small quantity of Carbaflo fluid to lubricate each bearing. Apply using a dropper or by dipping a
clean wire into the container and allowing it to drip onto each bearing.
c. Z slide Oldham coupling (motorised Z slide only):
Clean dirty and excess grease off the coupling. Lubricate with Carbaflo grease.
d. XY Micrometers:
Move one micrometer at a time to the limit position so that the spindle is fully retracted. Unscrew and
remove the small knurled knob that retains the micrometer thimble. Pull the thimble away carefully.
Apply Carbaflo grease to the lead screw. Replace the thimble and knob.
e. XY stage motor lead screw:
Drive the motor to either limit of travel, periodically stopping to lubricate the lead screw as it becomes
visible on either side of the anti-backlash assembly.
Warning:
Keep clear of moving parts.
f. XY Slides:
Use a small quantity of Carbaflo fluid to lubricate the slide. Apply using a dropper or by dipping a wire
into the container and allowing it to drip onto the exposed slide. Note that it is not possible to lubricate
the full length of the slide, but by cycling the movement a few times, the lubricant will be adequately
dispersed.
