authoritative answser: "It depends".
On who is talking.
Some people publish load capacities for a -set- of four. Particularly when they are selling them *in*sets*of*four*.
More responsible parties publish the load a _single_ caster will handle.
Read the fine print. If still in doubt, *ask* the seller.
Best one I've seen just had two - you tipped it up a bit like a sack truck to move it. Saved all the malarkey with locking castors.
-- Smert' spamionam
Sounds more like what we'd call a "kitchen cart". You're right about locking casters.
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