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For Machines Mfd. Since 5/19
Adjusting X-, Y-, and
Z- Ballscrew Backlash
This milling machine uses ballscrew technology
for X-, Y-, and Z-axes movement. Unlike a
standard half-nut and lead screw design, the
ballscrew design requires no periodic adjustment
and should last the life of the machine.
Main Belt Tensioning
Power is transferred from the motor to the
spindle with a heavy-duty cogged or synchronous
belt. With normal use, the belt will gradually
stretch over time. When it does, perform the
following procedure to re-tension it.
Tools Needed
Hex Wrench 2.5mm .............................................. 1
Hex Wrench 10mm ............................................... 1
To re-tension belt:
1.
DISCONNECT MILL FROM POWER!
2.
Loosen two motor mount cap screws, one on
each side of motor (see Figure 48).
Adjustment
Cap Screw
Motor Mount
Cap Screw
(1 of 2)
Figure 48. Belt tensioning controls.
3.
Push belt tension adjustment lever back
with moderate force until no slop exists.
Correct adjustment is zero deflection with
only slight pulley preload.
4.
While holding tension, tighten adjustment
cap screw against motor mounting plate to
secure setting.
S E R V I C E
5.
Re-tighten motor mount cap screws.
If it has been a long period of time and belt
has not been inspected, or it is suspected
that there is a belt problem, vent cover
can be removed (see Figure 49) for belt
inspection and belt changes.
Figure 49. Cogged belt inspection, cover removed.
Qty
Servo Motor Belt
Replacement
Power is transferred from servo motor to X- and
Y-axis ballscrews with cogged or synchronous
belts. With normal use, belts will gradually
require adjustment or replacement. When they
do, follow these procedures.
Tension
X-Axis Belt
Adjustment
Lever
Tools Needed
Hex Wrench 2.5mm .............................................. 1
Hex Wrench 3mm ................................................. 1
Hex Wrench 5mm ................................................. 1
Wrench 10mm ....................................................... 1
Wrench 19mm ....................................................... 1
ON
OFF
To re-tension or replace belt:
DISCONNECT MILL FROM POWER!
1.
Flip down folding handwheel lever and push
2.
on handwheel so it locks with shaft.
Model SB1063
Qty
-45-
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