Some freight cannot come to the crate. It is too large, too awkward, or too easy to damage in the handling it would take just to reach a crating shop. When that happens, the crate goes to the freight. Here is how our crew built a custom tilted crate around an oversized industrial engine cooling fan on the customer’s own pavement in Paterson, New Jersey.
The job: an oversized fan that could not travel as it was
A manufacturer in Paterson had a large fabricated steel engine cooling fan ready to ship. The fan was complete, coated, and balanced. What it did not have was any safe way to move.
Laid flat it swallowed floor space and put the load on its own blades. Stood upright it was too tall and too unstable for the trailer. Wrapped and strapped to a pallet it would have arrived with bent blade tips, which on a balanced rotating assembly is not cosmetic damage. It is scrap.
That is the situation on-site crating is built for. Instead of moving a fragile, oversized item twice, once to a crating facility and once to the carrier, a crew brings the lumber, the tooling, and the engineering judgment to the item and builds the crate around it in place. For a project cargo packing job like this one, that single decision removes the highest-risk handling step in the entire shipment.
What we were actually crating
Large engine cooling fans of this type are fabricated steel rather than molded plastic or cast aluminum. Individual curved sheet steel blades are riveted to a central steel spider, and the whole assembly is coated and balanced as a unit. Manufacturers build them across a wide size range: heavy duty steel fan propellers run from roughly 12 inches to 120 inches in diameter with four to sixteen blades, and metal engine cooling fans are offered from about 15 to 96 inches with single, double, and quad spider configurations. They cool diesel engines, generator sets, compressor packages, mining and construction equipment, and refrigeration units.
Three properties drive every packaging decision on an item like this.
| Property | Why it changes the crate |
|---|---|
| It is a balanced assembly | Balance is set at the factory. A blade bent in transit puts the fan out of balance, and an out of balance fan at operating speed damages bearings, shafts, and mounts. The crate has to guarantee that nothing touches the blades under load. |
| It is large and thin | Diameter is large, section thickness is small. The strength is all in the spider and the riveted joints, not in the blade tips, so the item must be carried at the hub. |
| It is round | A circle is the worst possible footprint for a rectangular truck deck or ocean container. Every inch of diameter costs floor space in one orientation or height in another. |
The rule that decided the build
Support the hub. Never the blades. Every dimension in this crate follows from that one sentence.
Why this crate ships tilted
The most obvious thing about the finished crate is that it is not a box. It is a sheathed panel carried at an angle on an A-frame skid base. That was not a stylistic choice, it was a dimensional one.
A large diameter round item has three realistic orientations, and two of them fail.
1. Laid flat
Footprint = full diameter
Blades carry the load. Eats deck space.
2. Stood upright
Height breaks the envelope
Small footprint, unstable, too tall.
3. Tilted on an A-frame
Both dimensions fit
Hub supported, blade tips clear of the deck.
Flat is the easiest crate to build and the worst one to ship. The footprint equals the full diameter of the fan, so the crate occupies floor space out of all proportion to its weight, and the item ends up bearing on its own blades.
Upright solves the footprint and creates a height problem. Once you add a skid, a base frame, and clearance, a large diameter wheel stood on edge runs past the usable inside height of a dry van or a standard container, and it is top heavy while it does it.
Tilted resolves both. Leaning the fan back on an A-frame drops the overall height under the envelope while pulling the footprint in from the full diameter. The fan sits face up on a sheathed deck, the hub is blocked and captured, and the blade tips stay clear of anything that could load them. The A-frame legs and the diagonal braces you can see in the photographs are what carry the tilt down into the skid, so the forces run into the base structure rather than into the item.
How the crate went together on-site
The sequence matters more than the carpentry. Built in the wrong order, a crate like this has to be partly dismantled to get the item in.
- Measure the item where it stands. Diameter, hub bore, overall depth front to back, and the actual center of gravity. On-site measurement is the whole point, because it removes the guesswork that produces a crate the item does not fit.
- Build the skid and base frame first. The base carries every load in the crate. It is sized for the gross weight, the lift equipment on both ends, and the tilt geometry, not just for the item.
- Set the A-frame and the deck. The angled deck is framed and sheathed, then the diagonal braces tie the frame back to the skid so the assembly cannot rack in transit.
- Load the item and block at the hub. The fan is set face up on the deck and captured at the hub. In the photograph you can see a timber cross fitted through the hub bore, which stops both translation and rotation without a single fastener touching a blade.
- Sheathe, cleat, and cap. Panels go on with cleats at the edges so the sheathing is not carrying load in isolation, then the lid closes the assembly.
- Mark it. Handling marks, center of gravity, sling points, and any regulatory marking go on last, while the crate is still in front of you.
Job specifics to confirm before publishing
Crate outside dimensions [CONFIRM: L x W x H], gross weight [CONFIRM: lb], fan diameter and blade count [CONFIRM], crew size and build time [CONFIRM], destination and mode [CONFIRM: truck, ocean, or air].
The compliance layer most people forget
A crate is not only a structure. If the shipment crosses a border, the wood itself is regulated cargo. Solid wood packaging material moving internationally has to be treated and marked under ISPM-15, and the mark is what customs actually looks for.
The lumber in this crate carries the IPPC mark with the HT treatment code, which is legible in the photographs on several of the frame members. That is the difference between a crate that clears and a crate that gets held, fumigated at the shipper’s expense, or turned around at the port. If your freight is going overseas, this is not an optional detail, and it is the reason ISPM-15 compliant export crating is specified up front rather than fixed later.
Two more layers come up regularly on industrial jobs like this one:
- Defense and government freight. Military shipments bring their own packaging and marking standards, including barcoded labels built to MIL-STD-129 and MIL-SPEC crating requirements.
- Ocean movement. A crate that survives a truck ride can still be destroyed in a container. Loads have to be secured for the motion of a vessel, which is a separate discipline from crate building. That is container loading with proper blocking and bracing.
Corrosion is the other quiet risk on coated steel. Fans that will sit in a container for weeks, or that will be stored outdoors on arrival, are candidates for heat shrink wrap or vacuum packing inside the crate. It is also worth being honest about what wood does and does not do well, which we covered in the advantages and disadvantages of wooden crates.
What an on-site crating crew actually brings to Paterson
On-site crating only works if the crew arrives self-sufficient. That means heat-treated lumber and sheathing stock already marked, fasteners and hardware, cutting and fastening tools with their own power, measuring and layout gear, blocking and bracing material, and enough lifting capability to position the item without improvising.
It also means arriving able to make decisions. The value in sending a crew rather than a truck is that the crate gets designed against the item that is actually in front of you, including the surprises: a coating that cannot be strapped over, a center of gravity that is not where the drawing says, a doorway that dictates the maximum finished width.
The same crews handle related work on the same visit, from sensitive equipment packaging for instrumentation and electronics through to drayage of the finished crate to the port or the airport.
When to call a crating company in Paterson, NJ
DGM New York works out of Edison, New Jersey and sends crating crews north into Paterson, Passaic County, and the surrounding North Jersey industrial corridor, including Wayne, Clifton, Totowa, Hawthorne, Fair Lawn, and the Bergen and Essex County manufacturing base. Edison sits roughly 18 miles from Newark Liberty International Airport and the Port of New York and New Jersey, and about 40 miles from JFK, which is the same gateway your freight is heading for.
Call for an on-site build when any of the following is true:
- The item is too large, too heavy, or too fragile to move safely before it is crated.
- Moving it to a crating shop would mean an extra lift, an extra load, and an extra unload, each one a chance to damage it.
- The item is round, irregular, or has no flat face to sit on.
- It is a balanced or calibrated assembly where transit damage is not repairable in the field.
- The shipment is going for export and the packaging has to carry an ISPM-15 mark.
- The drawing and the real item do not agree, and the crate has to be built to the real one.
If your freight is dangerous goods as well as oversized, the packaging and the paperwork have to agree with each other. That is handled through dangerous goods packaging and the matching Dangerous Goods Declaration, not bolted on afterward.
Frequently asked questions
What does on-site crating mean, and why would I need it in Paterson, NJ?
On-site crating means the crating crew comes to your facility with lumber, tooling, and hardware and builds the crate around your item where it stands. You need it when moving the item to a crating shop is itself the risky part of the shipment, which is common with oversized machinery, balanced rotating assemblies, and anything with no flat face to rest on.
Can a crate be built around equipment that is already assembled?
Yes, and that is usually the point. The base and frame are built first, the item is loaded and blocked, and the sheathing and lid close around it. Building in that order means the equipment never has to be disassembled, lifted twice, or forced through a fixed opening.
Why was this fan crated at an angle instead of flat or upright?
Because a large diameter round item fails both simple orientations. Flat, the footprint equals the full diameter and the blades end up carrying load. Upright, the crate exceeds the usable inside height of a trailer or container and becomes top heavy. Tilting it on an A-frame brings the height and the footprint inside the shipping envelope at the same time, while the hub carries the item and the blade tips stay clear.
Does an on-site crate still meet ISPM-15 export requirements?
It does, provided the crew builds it from lumber that has already been heat treated and marked with the IPPC mark. The treatment happens at the mill, not on your loading dock, so an on-site build is only export ready if the crew arrives with compliant stock. Confirm that before the crew is dispatched, not after the crate is closed.
How long does on-site crating take?
It depends on size, complexity, and how much design work has to happen on the spot. A straightforward box around a regular shape can be a few hours. An engineered build like this tilted A-frame crate, with a custom deck, blocking at the hub, and diagonal bracing, takes longer. Send dimensions and photographs ahead of time and the crew arrives with the design already worked out.
What information do you need to quote an on-site crating job?
Overall dimensions and gross weight, photographs from at least two angles, the material and finish, where the item can and cannot be supported, the destination and mode of transport, whether it is going for export, and what lifting equipment is available at your facility. Any dangerous goods content needs to be identified up front so the packaging and the documentation are built together.
Need a crate built around something that cannot move?
DGM New York builds custom ISPM-15 and MIL-SPEC wood crates for oversized machinery, aerospace and defense parts, sensitive equipment, and project cargo, at our facility or at yours. Crews cover Paterson, Passaic County, and the wider North Jersey and New York metro area from Edison, New Jersey.
Send dimensions and a couple of photographs and we will tell you what the crate needs to be. Contact DGM New York or call 908-862-1010 before your freight is booked, so the packaging, the marking, and the paperwork are all decided at the same time.
Disclaimer: This article and any material on this website are for general informational purposes only and do not constitute dangerous goods training, consulting, legal advice, or shipment-specific compliance guidance. A qualified subject matter expert must be consulted to evaluate the applicable regulations, including 49 CFR, the ICAO Technical Instructions / IATA DGR, the IMDG Code, and ADR/RID as applicable, for any specific shipment, product, operation, or training requirement.