Buying a second-hand mobile crane is not like buying a used car. We are talking about a working machine that will move critical loads for years, with people’s safety at stake, and where an error of judgement is expensive: too much on the purchase price, or too little on reliability and downtime. With extensive experience dedicated to the sale and purchase of lifting equipment, this is what we look at — and what we recommend looking at — before taking the step.
This guide covers the whole process: from defining which crane you really need to closing the deal with the paperwork in order. It is deliberately long, because each of these points is where we have seen buyers go wrong.
First, define which crane you really need
The most expensive mistake is made before looking at a single advert, and it is not choosing the wrong capacity: it is failing to work out what that crane is going to earn. A mobile crane is not an expense but an asset that has to pay for itself. Before focusing on a specific model, it is worth estimating how much real work it will move — what type of services, at what rate and with what level of occupancy — and what margin that turnover leaves once operating costs are deducted: fuel, staff, transport, insurance and maintenance. That margin is what has to absorb the machine’s depreciation over a reasonable period, and therefore what sets how much you can sensibly invest in buying it. The purchase budget comes from that calculation, not the other way round.
With that figure in front of you, the technical sheet stops being a list of aspirations and becomes a business decision. The type of work and the ground where it will operate define the category — all-terrain, crawler, truck-mounted or rough-terrain; the maximum load you need to move at its real radius and height, not the catalogue figure, defines the capacity; and the expected return narrows down the brand, the model and, above all, the year of manufacture you can afford. From there comes the additional equipment, which is rarely a mere accessory: jib, auxiliary winch, hooks and other elements that condition both the jobs you will be able to take on and the final price of the deal.
Buyers in the sector know all this well, so we take it as read. It serves as a preamble to what really separates a good purchase from a bad one: knowing what to check on the machine before signing. And if you are unsure which category fits your work, we explain it in detail in “Types of mobile cranes: a guide by category”.
What to check on a used mobile crane
A crane can look good and carry inside it a problem that eats up the savings from the purchase.
Above any checklist, the most revealing thing is the general state of preservation, and that is read by working with the machine. A well-kept crane moves smoothly in its four main motions — telescoping, hoist rope, slewing and boom luffing — with no strange noises and no play in the structural elements. The condition of the chassis and paintwork, and above all the effort the owner has put into stopping corrosion of the metal parts, say a great deal about the life the crane has had: a cared-for machine shows it, and a neglected one does too. With that overall picture in mind, these are the chapters that are not up for negotiation:
Structural condition
Chassis, boom and weld points: any sign of a crack, a badly done repair or structural corrosion is grounds to stop the deal, not to negotiate the price. It is the most serious thing a machine can have and the most expensive — sometimes impossible — to repair properly. This also covers play in the slewing ring, which reveals wear on the element the whole superstructure turns on, and the condition of the underside of the machine: oil leaks and, above all, corrosion in the metal parts of the frame and undercarriage, which is where rust works unseen.
Hydraulic system
Leaks, condition of hoses, cylinders and pumps, and behaviour under load. Pay special attention to the sealing of the telescoping and luffing cylinders and to the rods being free of scratches or marks: a damaged rod destroys the seals and ends in a leak. Also check the outrigger cylinders, because if they lose pressure the crane will not stay level. It is one of the most costly areas to repair and one of the ones that cause the most trouble if bought blind.
Ropes, sheaves, hook and hoisting system
Wear, deformation and general condition. These are direct safety elements.
Engine or engines
Many cranes have two — the carrier’s and the superstructure’s — and both count. On each one check cold starting, smoke, fluid levels, leaks and abnormal noises.
Working hours
They give an idea of use, but only make sense cross-checked with the real condition: few hours on a neglected machine tell you more than many hours on a well-maintained one.
Maintenance history
A crane with a record of services and repairs is worth more, gives fewer nasty surprises and is a strong argument when negotiating.
Load test
Whenever possible, see the machine working, not just running. It is the best way to detect problems that do not show when it is idle.
You have the point-by-point detail, with what to look at in each one, in the “inspection checklist before buying a used crane”.
The documentation you must demand
A crane without its paperwork in order is a problem the buyer inherits, and regularising it afterwards costs time and money. Before closing anything, ask for and check: technical sheet, registration documents, the latest valid roadworthiness test (ITV), the machine’s certificates and maintenance records. If the crane comes from outside Spain, type-approval comes into play, with its own process and timescales; we explain it in “Type-approval and registration of mobile cranes in Spain”.
How to tell if the price is fair
The price of a used crane does not come from a table. It depends on the brand, the model, the year, the hours, the real condition and — this is often forgotten — the demand there is at that moment for that specific machine. Looking at what someone else is asking for a “similar” crane is misleading, because the details change the value a great deal.
Overpaying is easy when you do not know the market. That is why, before negotiating, a proper valuation is worthwhile. We explain how a crane is valued and which factors weigh most in “How much is a mobile crane worth? The factors that set the price”.
Buying on your own or with a broker
You can manage the purchase yourself: search, compare, negotiate, travel to see the machine and handle the paperwork. It is feasible, but it takes time and exposes you to all the mistakes above, especially if you do not buy cranes often.
A broker changes the equation in three ways: access to machines that are not always advertised, technical judgement to quickly rule out the ones not worth the trouble, and full management of the deal, including the legal procedures and transport. At KRANEX we work this way, with our own brokerage method that seeks the best purchase price and leaves the deal closed with no loose ends. The broker pays for itself with what it saves you on price and on later problems.
Frequently asked questions
How much does a used mobile crane cost?
It depends on the type, the brand, the year and the condition, and the range is very wide. The sensible thing is to start from a valuation of the specific machine you are interested in, not from general prices.
What is the most important thing to check?
Structural condition and the hydraulic system. These are the two chapters where a repair can eat up the savings from the purchase, or make the machine unviable outright.
Is it safe to buy an imported crane?
Yes, provided it is properly registered so it can travel and work in Spain. And there is a detail that saves money: some manufacturers already have European type-approval on their newer cranes, which makes local approval unnecessary and allows direct registration, with savings that can reach 2,500 euros. When the machine does not have that type-approval, the local procedure is key and should be planned and budgeted before buying, not after.
Is it worth buying with a broker?
If you value your time and want to reduce the risk of a bad purchase, yes. It provides access, judgement and management, and it usually pays off for what it saves.
