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SESK: Stuff Everyone Should Know · sesk.info/osha-powered-industrial-trucks-stability

Most counterbalanced forklifts rest on how many support points, forming the stability triangle?

Three points, even on a four-wheel truck.

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  1. Four
  2. Two
  3. Three ✔

Why: Most counterbalanced forklifts rest on three points: the two front wheels and the pivot pin of the steer axle. That makes the stability triangle, even on four-wheel trucks.

Huh, didn't know that: If the combined center of gravity moves outside the stability triangle, the truck may tip over.

The dad joke
Why did the forklift stay balanced? It knew its triangle basics.
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References

Answer: Three. Most counterbalanced forklifts rest on three points: the two front wheels and the pivot pin of the steer axle. That makes the stability triangle, even on four-wheel trucks.

  1. 29 CFR 1910.178 Powered industrial trucks, Appendix A www.ecfr.gov/current/title-29/subtitle-B/chapter-XVII/part-1910/subpart-N/section-1910.178
    Almost all counterbalanced powered industrial trucks have a three-point suspension system
    Checked 2026-10-10.

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