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LM5200 Operating Manual
Frequently Asked Questions
LM5200/6200 FAQ
Why is the bed segmented?
Segmented beds allow for the mill to be shortened or lengthened
easily as well as setup into gantry configuration without a loss in machining ability. The bed
sections are staggered as in the diagram below to get maximum rigidity. Only one of the four
linear rail blocks passes over a joined section at any given time. The bed segments are either 2
feet (609.6 mm) or 4 feet (1219.2 mm) long. There are bolts that rigidly hold the bed sections
together down the whole length of the bed (two of these are shown in red as an example).
There are also bolted side plates (green in the diagram) that connect the bed sections
lengthwise.
I don’t need the gantry setup or to change the length of the bed, I just want to mill. Is this
the right product?
Right out of the box this product comes ready to do linear milling without
any bed section alignment required. Just level it to the workpiece and go. The good news is,
now that you have such a versatile machine, it can be lengthened, shortened, or go gantry to
satisfy a future need you may not have yet. You are now ready for anything that comes your
way.
What is the accuracy of the ballscrew?
LM5200 ram/bed/spindle – Pitch accuracy of +/- .0004 per foot (33 µm/m)
LM6200 bed – Pitch accuracy of +/- .001 per foot (83 µm/m)
LM6200 ram/spindle – Pitch accuracy of +/- .0004 per foot (33 µm/m)
Is DRO available?
The 40 taper and 50 taper spindles have a DRO for the z-axis travel. There
is not a standard DRO option for the bed or ram axis. If a customer has DRO requirements this
capability can be explored through the specials process.
Is air power available?
The LM5200 has air power available as direct drive or right-angle for
the HSK spindle, but the LM6200 does not.
Is an electric spindle available?
The LM5200 has a 1.5 Hp electric option for the HSK
spindle, but the LM6200 does not.
What is the recommended length the bed can be unsupported?
The beds are very rigid
and can machine with the bed unsupported but performance will be affected. The use of an
optional subplate can increase the rigidity for unsupported distances. As a general
recommendation, keep the unsupported distance less than or equal to 1 foot (304.8 mm)
without a subplate, and less than or equal to 1.5 feet (457.2 mm) with a subplate.
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