 Operates
in Shock and Vibration Conditions
The Linear Encoder or Resolver
Package is designed to operate in shock conditions. Specifications far
exceed those of glass or magnetic scales. If fact, a glass scale will
likely break under conditions approaching the upper limits of a rack and
pinion specification.
Precise
Operation
Accuracy on a machine tool is dependent
on the readout system’s ability to measure the actual position of the
tool relative to the work piece. It is critical that the feedback device
adapt to temperature changes without creating errors.
There are two main reasons why a
rack and pinion feedback measuring system creates fewer temperature
related errors:
- The thermal coefficient of
expansion is identical to that of machinery steel.
- The rack is attached directly to
the machine via the channel. The rack will only change with the
machine, not the air around the machine.
- Being suspended in air, glass and
magnetic scales are affected by air temperature not machine
temperature.
Fine
Resolution
A resolution of 50 millionths of
an inch (.000050") provides fine resolution for grinding applications
and .0001 inch diameter increments for lathes, milling machines or any
other machines.
Unlimited
Length of Travel
Due to the unique construction of the
SEL Series Rack and Pinion Encoder or Resolver Measuring System Package,
there is really no limitation to the length of travel. The SEL Series is
accurate to +/- .0005 inches regardless of length. There is no cumulated
error.
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