Freight 101

Shipping Generators, Transformers, and Compressors: A Guide

You’ve got a generator on a skid, a transformer that has to stay upright, or a compressor that weighs more than the pallet it’s bolted to. It won’t fit in parcel. Dry-van LTL doesn’t want it, and when a carrier does take it, the invoice comes back with charges nobody warned you about. But it’s one piece. Paying for a whole flatbed to move it feels like renting a moving truck to carry a couch.

That gap, too big for standard LTL and too small for a full trailer, is exactly where heavy industrial gear gets stuck. Here’s how to move it without the drama.

Why this freight breaks standard LTL

Generators, transformers, and compressors share a few traits that big LTL networks quietly punish:

  • They’re dense. A compact compressor can weigh several thousand pounds in a small footprint. Dense freight trips the Density Minimum Charge, which reprices your shipment by weight-to-space math instead of the number you were quoted.
  • They’re tall or awkward. A lot of this gear rides high, has attachments hanging off it, or won’t tolerate a forklift jamming it into a stacked trailer.
  • They can’t be top-loaded in a van. Nothing goes on top of a transformer. That wasted vertical space is what the Cubic Capacity and Capacity Load charges exist to recover, at your expense.

So the quote you budgeted around, the one that felt settled, balloons on the invoice. You didn’t do anything wrong. The pricing rules were built to price freight like yours out or to claw back cost after the fact. For more on how that happens, see our breakdown of LTL accessorial charges.

Why an open deck is the right call

Heavy industrial gear wants an open deck. Here’s why:

  • It loads from the side and the top. A crane or forklift can set a transformer or generator right where it belongs, no wrestling it through a trailer door.
  • It gets chained at rated points. Equipment secures to the deck at the manufacturer’s rated tie-down points, with attachments lowered and secured separately. Securement is planned so the aggregate Working Load Limit of the chains is at least half the cargo weight, and for heavy iron we plan well past the minimum.
  • It rides direct. Partial flatbed loads can dispatch straight from your dock to the destination instead of bouncing through terminal after terminal. Fewer handoffs means fewer chances to knock a control panel loose or scratch a housing.

With partial flatbed, your generator shares deck space with other partial loads. You pay for the part of the deck your machine actually uses, not a whole 48-foot trailer. The carrier fills space that would have run empty. The freight moves. That’s how everybody wins.

The pricing promise that matters here

The quoted price for your partial flatbed shipment is locked in. It is not subject to the Density Minimum Charge or the Linear Foot Charge. That’s the whole point for dense, awkward gear: the number you budget is the number you pay. A locked-in quote is a feature, not a favor.

Here’s an illustrative example of the kind of swing this avoids. These are made-up numbers to show the mechanism, not a quote:

QuotedBilled after density rule
Dense compressor, standard LTL$600$2,400
Same load, partial flatbed$1,150$1,150

A higher upfront number that holds beats a low quote that triples on you.

When your gear outgrows partial

The partial flatbed sweet spot is roughly under ten feet of deck space and under about 10,000 pounds. Plenty of generators and compressors land right in that range. But some transformers and big-iron generators run heavier, wider, or over-dimensional, and that’s a full flatbed or specialty open-deck job.

If your machine is bigger than partial can carry, we won’t force it. Comet National Shipping, our parent company, handles full flatbed, oversized and specialty open-deck, and full truckload, and can move a single heavy piece properly. Right mode, right price, no ego about it.

Getting an accurate quote

  1. Tell us the real dimensions and weight, attachments included. Heavy gear lives or dies on accurate specs.
  2. We price it for the deck space it needs and lock that number in.
  3. We schedule pickup and securement with one point of contact who owns your shipment start to finish.

You shouldn’t need a logistics department to ship one generator. Send us the machine that LTL won’t touch and get a locked-in quote at /get-a-quote, or call (800) 831-5376.

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