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    • Prototype 19-0/1 concept (following what was shown previously): ~500mm travel, ~400mm length
      • 2x ~250mm travel, ~400mm length rails (carriages ~150mm length, fastened together) McMaster # 8379K6 , stacked

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    • Alternative: 1x ~250mm travel, ~400mm length rail per ring, to move both 1/4-shells and meet in the middle
      • not preferred: less assembly flexibility, less clearance when connecting handling frame due to less travel
    • Alternative: 1x ~450mm travel, move rails to edge of table so single rail can reach far side 1/4-shell
      • not sure about rigidity cantilevered from bearing at one end, or about table space to enclose.

Candidate vendor parts:

  • 8020 Inc. # 6516
    • slide on 1.5" t-slot rail. add #6800 locking handle. not preferred due to sliding friction and height.

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  • Misumi # SSE2BWLZ14G-400
    • linear rail w/ bearings, stainless steel, cleanroom grease.

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    • locking mechanism?
      • Misumi SECWK14 compatible with above, but not stainless

      • also end stop bolts
      • Grease not preferred (cleanliness / accidental spread)


  • Igus Drylin NT

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    • plastic slides
    • Sent request to Igus contact
    • Looking for:

      • ~500mm linear motion
      • ~400mm collapsed length
      • ~10lb load capacity
      • Low duty cycle (moved occasionally)
      • End stops at both ends of travel
      • For clean assembly room (ISO7) use
      • Qty ~12 of these slides