How should carrier volume be sized?

A: By one shift of real use, not the whole set: record three shifts, take the maximum and add twenty percent.

At what distance do castors pay off?

A: Beyond two hundred metres; above eight hundred use large castors with a pusher. Carrying runs about forty metres a minute, small castors sixty, large ones eighty.

Does a tool carrier need a lock?

A: Where sign-off or item counting exists, yes. Within one station a lid is more useful.

Is a slotted liner necessary?

A: For item counting yes — it makes a shortage visible on opening. For moving a set as a whole, dividers alone use volume better.

How to configure heavy but short?

A: A reinforced handle for a two-person lift, or a hybrid with small castors that can still be lifted; the handle mount and base frame must take repeated lifting. ---

Choosing a Tool Carrier: Load, Distance and Handover

Quick answer: Three inputs settle a tool carrier: how much one shift needs, how far it travels daily, and whether it is signed over. Load sets volume and dividers, distance sets handle versus castors, and handover sets closure and labelling. Once those three are fixed, model, liner and lock follow.

Choosing a tool carrier: three inputs first
Load: sized on one shift of real use
Distance: the only basis for the moving method
Handover: closure, lock and label
Combining the three inputs and the usual mismatches
FAQ

1. Choosing a tool carrier: three inputs first

Datasheets list volume, load and material — all outputs, not inputs. The inputs are three site conditions: how much one shift needs, the total distance travelled daily, and whether the unit is signed over. Fix those and the ranges for volume and load narrow by themselves.

Order matters. Starting from volume usually ends with a unit half empty or already full; starting from price usually saves money on the wrong item — dropping castors for short distances and paying twenty minutes a day on long ones.

Input	Steps	Decides
Load per shift	15 / 25 / 40 kg	volume and divider count
Daily distance	under 200 m / 200 to 800 m / above 800 m	handle / small castors / large castors and pusher
Handover	none / shift sign-off / item count	lid / lock / label holder and seal

2. Load: sized on one shift of real use

Size on one shift of real use, not the whole set. Most stations consume forty to sixty percent of their tools in a shift; the rest are spares and specials. Sizing on the total means carrying unused weight around all day.

A tool carrier loaded with a full day's tools, lid closed, standing on a pallet

Track what is actually taken for three shifts, take the maximum and add twenty percent. That beats any rule of thumb, and it beats asking users, who over-report.

3. Distance: the only basis for the moving method

A handle to two hundred metres, small castors to eight hundred, large castors and a pusher beyond. The line comes from travel speed: about forty metres a minute carrying, sixty with small castors, eighty with large ones — and the gap widens with distance.

A gloved hand pushing a wheeled tool carrier along a corridor

Surface matters as much. Three hundred metres on epoxy suits small castors; gravel and ramps need large ones, or the wheels jam and carrying is faster. Walk the route before choosing.

4. Handover: closure, lock and label

Without handover a lid suffices, for dust and dropped parts. Shift sign-off needs a lockable latch and a label holder for shift and owner. Item-by-item handover needs a seal and a slotted liner so a shortage shows on opening.

Close-up of a tool carrier with a handover tag holder and two latches

The price steps are small; the wrong step is expensive daily. The usual errors are a lid-only unit where sign-off is required, and item counting without slots.

5. Combining the three inputs and the usual mismatches

Four combinations cover most sites: light and short without handover, medium with shift sign-off, heavy and long with item counting, and heavy but short with a two-person lift.

Close-up of a tool carrier internal foam with slots for frequently used tools

Mismatches cluster on distance versus castors — a handle chosen to save money on a three-hundred-metre route — and on handover versus closure, where a fabric lid carries no record at all.

Conclusion

Three steps: volume from one shift of real use, moving method from daily distance, closure and labelling from the handover rule. There is no fourth variable — material, colour and brand all fall out of the three. Choose the model first and one of them will not fit the site.

This article covers container-side specifications and design implications only, not the handling, loading or use of the contents.