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Robot Types

Robot-type pages should help a plant narrow the class that matches the work, not turn payload charts into strategy. The wrong robot class usually shows up later as awkward guarding, fragile EOAT, poor uptime, or a cell that looked elegant in a demo but does not survive shift pressure.

Robot type or shortlist classStrong fitWeak fit
Collaborative robotLower-payload tasks, easier first-cell adoption, flexible tending, constrained facilitiesHigh-speed guarded work, heavy parts, dirty duty cycles, unrealistic collaboration claims
Standard six-axis industrial robotHigher duty, stronger acceleration, conventional guarded cells, repeatable productionProjects that need simple operator proximity more than throughput
Compact industrial armSmall-footprint machine loading, inspection, kitting, fixture-adjacent workLarge reach, heavy payload, or high-inertia EOAT
SCARA-style automationFast planar handling, assembly, packaging, simple vertical motionComplex orientation, deep reach, or broad spatial manipulation
Gantry or Cartesian systemLong travel, heavy loads, structured pick/place, machine rowsFlexible multi-SKU manipulation where six-axis motion matters

The class decision should happen before vendor preference. A familiar brand cannot fix a wrong class boundary.

The useful comparison is rarely just collaborative versus traditional, or six-axis versus something smaller. The real questions are:

  • how stable the part presentation is,
  • how much cycle time pressure exists,
  • what kind of guarding and access are realistic,
  • and whether the cell needs graceful recovery when upstream conditions degrade.

Before requesting quotes, define:

  1. real part weight including gripper, adapters, cables, and safety margin;
  2. required reach at the actual pick/place positions, not maximum brochure reach;
  3. cycle-time target including robot motion, sensing, machine wait, and recovery;
  4. number of product families and changeover frequency;
  5. guarding, operator access, and maintenance access expectations;
  6. fault recovery owner on first shift, second shift, and weekends.

If those items are still vague, the RFQ will reward sales confidence instead of engineering fit.

How to narrow robot class without wasting time

Section titled “How to narrow robot class without wasting time”
  1. Start with the application, not the robot family.
  2. Write down the payload, reach, part variability, and recovery expectations.
  3. Decide whether collaboration is operationally real or just visually attractive.
  4. Choose the class that minimizes total cell complexity, not just the robot that demos well.