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Renishaw:
REXA ultra-high accuracy absolute angle encoder REXA30USA100B With zero coupling losses and exceptional repeatability, the REXA
ultra-high accuracy angle encoder achieves better than ±1 arc second total
installed accuracy. Like the RESA encoder, the REXA is a stainless steel ring with the scale
graduations marked axially onto the periphery, but with a number of differences
to improve upon RESA’s already impressive accuracy. REXA has a thicker cross-section to ensure that the only significant
installation error is eccentricity. Eccentricity is easily removed by using 2
readheads, and combining the signals inside the host controller.
The only errors remaining are graduation errors and readhead SDE, both
of which are so small they are often negligible. As a non-contact encoder, REXA
offers dynamic performance advantages, eliminating coupling losses,
oscillation, shaft torsion and other hysteresis errors that plague enclosed
encoders. The REXA system operates at temperatures up to +80 °C and speeds to 8500
rev/min
REXA ultra-high
accuracy rings
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Scale
pitch
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Material
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Form
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Diameter
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Scale
coding option
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Part number
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Price US$
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REXA
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30U (30 µm)
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S (stainless steel)
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A (standard section)
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052
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B
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REXA30USA052B
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2,645
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057
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REXA30USA057B
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2,645
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075
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REXA30USA075B
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2,866
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100
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REXA30USA100B
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4,739
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103
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REXA30USA103B
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4,739
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104
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REXA30USA104B
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4,739
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115
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REXA30USA115B
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4,794
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150
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REXA30USA150B
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4,849
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183
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REXA30USA183B
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4,960
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200
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REXA30USA200B
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5,070
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206
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REXA30USA206B
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5,070
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209
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REXA30USA209B
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5,070
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229
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REXA30USA229B
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5,290
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255
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REXA30USA255B
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5,583
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300
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REXA30USA300B
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7,384
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350
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REXA30USA350B
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8,817
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417
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REXA30USA417B
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11,462
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Renishaw: REXA ultra-high accuracy absolute angle encoder REXA30USA100B 
Renishaw: REXA ultra-high accuracy absolute angle encoder REXA30USA100B 
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Support Links
Renishaw: REXA ultra-high accuracy absolute angle encoder REXA30USA100B
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