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We've been shipping these out for about six months now, and the 600N.m max torque on the 1/2" square shaft is pretty much the headline—it handles seized bolts on heavy equipement without much fuss, though the brushless motor is what keeps it running cool on long jobs.
The no-load speed goes up to 2800 rpm, with impact frequency hitting 3200 impacts per minute, and what that means in practice is you're not waiting around for the fastener to break loose; most buyers go with the 21V lithium platform (battery not included) for weight savings—2.1 kg tool only—since it balances well for overhead work.
Automotive techs and machinery assemblers are the main crowd here, but it's actually better for construction framing than for delicate electronics work, where the torque would just snap small bolts outright; the 190×220×80 mm dimensions fit into tight engine bays, and the 220V charging votage is standerd for most shops.
MOQ is typically 50 units or so, and we usually have stock, but confirm lead time if you need more than 200—the 12-month motor and electronics, though the square drive itself is pretty and rarely fails.
Anyway, the 600N.m figure is measured at the shaft, so it's tighter tolerance than most Chinese tools in this price range, and we've had a few customers mention teh impact mechanism feels smoother than the competition's 500N.m models.
