SPINDLE LINERS AND LOCKING RINGS
Why do I need Spindle Liners?
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Spindle liners are used to keep the bar stock on
center in the lathes spindle. On the hydroturn the reduction of vibration due
to the imbalance of having a bar flopping around in the spindle is the key
benefit, but it also insures that the push rod will stay centered on the bar
stock. On the Autobar series as well as reducing vibration, the spindle
liners are important for the reloading cycle. As the new bar is being loaded
into the lathe automatically, the spindle liner holds it aligned with the
Collet opening. With out the proper spindle liner the bar stock will jam
against the inside of the Collet. |
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Which Spindle liners do I need?
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On the hydroturn series
you need a spindle liner to match each reduction tube you are going to use.
On the Autobar series you need a liner to match each bar diameter you are
going to run. Now if your a job shop this starts to add up to be a lot of
liners, what I have done is pick out lines for the common size bar (example
3/8, 1/2, 3/4, 1 inch). Then if I have a small job that needs say 15/16
stock, I use 1 inch stock instead, and if I get a large job that needs 15/16
stock, then I order the liner for it. |
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The four
measurements below are what CNC Enhancements needs to make
a spindle liner.
If you have any questions please email Universal Machinery at: CNC@universalmachinery.com
Universal
Machinery at (805) 445-9964.
Measurement
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Description |
A
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Located at the back of the actuator or the back of the
draw tube. On some machines the draw tube goes clear to the back, on others
it does not. We need this measurement at the very back of the spindle.
Measurement B may not be the same as A. Tolerance +/- 0.005 |
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B |
Located at the front of the draw tube just behind the
chuck. Measurement A may not be the same as B. Tolerance +/-0.005 |
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C |
Over all length inside the draw tube and actuator combined.
Tolerance +/-1/4 inch. |
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D |
This depends on your preference. Some people want the
spindle liner to extend out as close as possible to the bar feed. This holds
the bar more stable. However, coolant can drain back through it and make a
large mess at the back of the machine. Other people want it cut off at the
back of the actuator so the coolant will be caught by the coolant collector.
If you are not sure which you want, use the long one. You can always cut it
off. Tolerance +/-1/4 inch. |
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Lathe Draw
Tube ID |
List Price |
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Up to 3" |
$360 |
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3" to
4" |
$460 |
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4" to
5" |
$560 |
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Over 5" and
Under 6" |
$795 |
