Why does the Industrial hydraulic tool heavy-duty transit case use 6 ribs instead of a thicker solid base?

Answer: A solid base puts all weight on the empty case, making 15.8 kg awkward to carry; 6 ribs add stiffness at mid-span and hold deflection at 45 kg to ≤2 mm. They also leave gaps for the fork pockets.

How is the 90 mm fork-pocket clear height set?

Answer: From pallet tine thickness plus allowance. Too narrow jams the fork; too wide thins the floor. The ribs sit in the gaps so 90 mm keeps its shape at 45 kg.

Where is the ≤2 mm full-load deflection gauged?

Answer: At mid-span and the 6 rib roots, reading the height difference before and after 45 kg loading. The 45 kg between 60.8 kg gross and 15.8 kg empty is the applied load.

What does a ≤3 mm diagonal deviation show?

Answer: It shows the 6 ribs and corner posts held alignment through a 1.2 m drop, gauged at two diagonal pairs. Over 3 mm, check rib roots, then corners, then the 5.5 mm wall.

How do 6 latches at 520 N each relate to stacking?

Answer: Latches only lock lid to shell, spread evenly so no point pries open first. 520 N is one latch's locking force, rechecked after 96 h salt spray.

Industrial hydraulic tool heavy-duty transit case

Quick answer: An Industrial hydraulic tool heavy-duty transit case uses six bottom ribs to hold deflection within 2 mm at 45 kg across three stacked layers.

Bottom longitudinal rib layout of the Industrial hydraulic tool heavy-duty transit case
Fork-pocket clear height and pallet matching
Corner load transfer across three stacked layers
Gauge points for full-load deflection
Diagonal deviation recheck after a drop
FAQ

1. Bottom longitudinal rib layout of the Industrial hydraulic tool heavy-duty transit case

The Industrial hydraulic tool heavy-duty transit case runs 6 longitudinal ribs at even spacing along the base, so a 45 kg load hits the ribs before the frame. Outer size 980×620×480 mm and inner cavity 900×540×400 mm fix the span. Six ribs hold mid-span deflection to ≤2 mm.

In the Industrial hydraulic tool heavy-duty transit case, a 5.5 mm wall pairs with three weights: 15.8 kg empty, 45 kg loaded, 60.8 kg gross. Empty governs carrying, loaded governs stacking, gross governs fork lift.

Whether ribs and base are moulded together or bonded later decides if a shock crosses the floor. Moulded ribs have a root fillet and rarely crack under a drop; bonded ribs save tooling but add a glue line to inspect. Gaps between the 6 ribs leave room for fork pockets, so the lip is not cut by a rib. The four corners are thickened, and stacked feet press on lower posts so force runs down one line. Rib height must match the 5.5 mm wall; too tall warps empty, too short cannot hold loaded deflection. JUNZHIJIA files by rib so a reading traces to one number.

Long-edge position	Member	Load role
Mid-span	6 ribs	Holds deflection to ≤2 mm
Both ends	5.5 mm wall	Frame shares bending
Base	980×620×480 mm	Fixes the span

2. Fork-pocket clear height and pallet matching

The Industrial hydraulic tool heavy-duty transit case sets fork-pocket clear height at 90 mm, sized for common pallet tines so they clear the lip. The pocket runs along the long edge, its top edge lined up with gaps between the 6 ribs. Too small jams the fork; too large thins the floor.

Industrial hydraulic tool heavy-duty transit case boxes lined on white shelving, four black carry cases and one orange case with printed marks

Pocket and ribs are two faces of one base, competing for area on the 980×620×480 mm floor. The 6 ribs sit in the gaps so 90 mm stays undeformed at 45 kg loaded. Base material creeps from −25 °C to 60 °C, so height is checked at the upper condition.

When the 60.8 kg gross case rests on two tines, load concentrates on two narrow lip strips. The Industrial hydraulic tool heavy-duty transit case adds a turned flange to spread that pressure, so the lip does not collapse first after a 1.2 m drop. Pocket deformation joins the ≤3 mm diagonal deviation as a post-drop recheck.

3. Corner load transfer across three stacked layers

In a 3-layer stack the bottom case carries the gross weight of two above, so 60.8 kg times two is the corner input. The Industrial hydraulic tool heavy-duty transit case aligns feet as bosses with corner posts, so force runs down one line instead of landing mid-lid.

Corner load is spread sideways by the 6 ribs. If a foot misses its post by a few millimetres the load turns eccentric. After a 3-layer stack the base diagonal is measured and ≤3 mm means the posts held alignment. The same corners are rechecked after 96 h salt spray.

Six latches at 520 N each also relate to stacking. An upper case is not located by latches; they only lock lid to shell, evenly spread so no point pries open first. The IP66 mouth is rechecked after stacking.

4. Gauge points for full-load deflection

Deflection at 45 kg loaded is gauged at mid-span and two rib roots, reading the height difference at one spot before and after loading. The ≤2 mm line means the bend stays inside what 6 ribs can hold. The Industrial hydraulic tool heavy-duty transit case draws gauge points into the load sheet.

Industrial hydraulic tool heavy-duty transit case four boxes open in a row, black red-latch and blue shells, foam slots and instruction sheets

Gauge points cannot sit only at mid-span. A point at each of the 6 roots reveals a rib that lost floor contact. The 45 kg between 60.8 kg gross and 15.8 kg empty is the applied load, and with one template the two heights are subtracted.

The limit is one number, ≤2 mm. Move the gauge and the reading is void.

Load-bearing member	Value	Measurement condition
Longitudinal ribs	6	Mid-span gauge at 45 kg
Wall	5.5 mm	Frame shares bending
Pocket flange	90 mm clear	Tines lift 60.8 kg gross

5. Diagonal deviation recheck after a drop

A 1.2 m drop runs over six faces, with the corner landing concentrating shock. The line is base diagonal deviation ≤3 mm, gauged at two pairs as the difference between diagonals. For the Industrial hydraulic tool heavy-duty transit case this shows whether ribs and posts were knocked out of line.

For the Industrial hydraulic tool heavy-duty transit case, the diagonal is measured before and after with one template. Over 3 mm, check whether the 6 ribs lifted at the root, then the corner, then the 5.5 mm wall. The IP66 gasket is inspected because a shifted seal removes the datum.

Drop, stack and full-load deflection form a fixed order, since each step rewrites the next one's start. Stack 3 layers, run the 1.2 m drop, then load 45 kg; both limits are read in that order. Salt spray for 96 h comes last to see whether metal pits shift the earlier readings.

Deflection value	Condition	Limit
Full-load deflection	45 kg loaded	≤2 mm
Diagonal deviation	1.2 m six-face drop	≤3 mm
Pocket clear height	90 mm	No deformation after drop

Conclusion

The Industrial hydraulic tool heavy-duty transit case comes down to two lines: base deflection ≤2 mm at 45 kg loaded and diagonal deviation ≤3 mm after a 1.2 m drop. Six ribs, a 5.5 mm wall, 90 mm pocket clear height and 3-layer corner alignment hold those lines; 60.8 kg gross and six 520 N latches close the boundary. Order on recheck readings after 96 h salt spray rather than one factory figure.