Super Long Reach vs. Standard Boom: What You're Actually Trading on a CAT 320 or 323

CAT sells the 320 and 323 in two genuinely different reach configurations, and the gap between them is bigger than most buyers expect. A standard 320 or 323 and the same model's Super Long Reach (SLR) build share a carrier and an engine, but the boom-and-stick geometry bolted onto that carrier changes what the machine can actually do so much that they end up serving almost entirely different jobs.

The Standard Configuration's Real Numbers

A standard 320 running CAT's 5.7 m (18'8") reach boom with a 2.9 m (9'6") stick digs to a maximum depth of 6,720 mm (22'1") and reaches 9,860 mm (32'4") at ground line, generating 134 kN of bucket digging force under SAE rating. Operating weight for that configuration runs 22,700 kg (50,100 lb), built around a 1.19 m³ HD bucket, 790 mm triple grouser shoes, and a 4.2 metric ton (9,300 lb) counterweight. That's the configuration that handles the overwhelming majority of general excavation, foundation, and utility work, because it balances reach, depth, and force well enough to not force a compromise on most jobs.

What Super Long Reach Actually Changes

The 320 and 323 SLR configurations, both running 174 hp, push maximum digging depth out to 37'10" and maximum reach to 51'1" — roughly 71% deeper and 58% farther than the standard build. That extra geometry doesn't come free: CAT fits SLR builds with a heavier counterweight specifically to keep the machine stable with the bucket working way out at full extension, because a long, unsupported boom-and-stick assembly loaded at maximum reach creates leverage the standard machine's balance point was never designed around. Stability management, not just hydraulic force, becomes the real engineering problem the farther that reach gets pushed.

SLR configurations also carry a transport cost standard machines don't: the boom and stick typically need to be detached before the machine can move down the road, adding real time and logistics planning to every mobilization. That's a cost worth knowing about before committing to an SLR build, not something to discover on the first job that needs the machine moved across town on short notice.

Who Actually Needs the Super Long Reach Build

Ditch and canal cleaning, riverbed and waterway dredging, and pond or reservoir maintenance are the classic SLR jobs, because all three involve reaching out over water or a steep bank rather than digging straight down into solid ground beneath the machine. A contractor doing that kind of specialized reach work genuinely can't substitute a standard machine and reposition more often — the whole point is working from a stable position on the bank while the bucket does the reaching. Everyone else — foundation, utility, general site excavation — is almost always better served by the standard configuration's balance of reach, depth, and digging force, and should resist the temptation to buy reach capability on the theory that "more reach can't hurt." It costs real digging force and real stability margin to get that reach, and paying for it unused is a worse outcome than not having it at all.

Financing the Reach Configuration That Matches Your Work

Canal, waterway, and drainage contractors who genuinely work extended-reach jobs benefit directly from an SLR build's extra geometry, even with its reduced force and transport cost. General excavation, foundation, and utility contractors are almost always better served, and better financed, sticking with the standard configuration that fits the work they actually do every day.

BFC finances and leases excavators nationwide, for startups and existing businesses, across every credit profile. We're a growth partner first — we'll help you figure out whether a Super Long Reach build genuinely fits your work before you commit. Apply for financing to get started.

For how the standard 320 GC, 323, and 325 size classes stack up against each other, see our guide to picking the right medium excavator size, and for how CAT's offset-swing boom option changes a different kind of reach problem, read mono boom vs. variable angle boom explained. You can also explore our full excavator equipment financing options.

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