Effective thickness (ET) moves the cargo away from the forklift carriage. A smaller ET can help the capacity calculation, but the attachment must still withstand its real load and working cycle.
Compare installed geometry, not a listed dimension alone
| Change considered | Possible benefit | Check before acceptance |
|---|---|---|
| Lower ET | Shorter load arm in the calculation | Verified geometry, structure and required movement |
| Lower attachment mass | Lower attachment moment | Rated capacity and durability at the actual duty |
| More compact layout | Possible visibility and clearance improvement | Hose, mast, load and floor clearances |
Bring the drawing and the truck chart together
Ask for the dimensioned attachment drawing, mass, horizontal centre of gravity, rated capacity and mounting details. Check the exact truck chart and working height. ForkFocus can then compare a compact design with a stronger or longer-reach alternative without treating ET as the only decision.
See how ET enters the formula · Review fork positioners · Plan wear-part support