Truck Mounted Crane Buying Guide: Capacity, Types and Prices

A truck mounted crane is bought for a lifting duty, not for a tonnage badge. The number on the boom — 8 tonne, 12 tonne, 16 tonne — describes the maximum load at the shortest radius with the outriggers fully extended on firm, level ground. At the radius where the load actually sits, the same crane may be rated for a small fraction of that figure. Buyers who order by tonnage and read the load chart afterwards usually end up with a crane that cannot reach the job, or a carrier that cannot legally carry both crane and cargo. Factory prices in 2026 run from roughly USD 42,000 for a 6.3 tm knuckle boom on a light 4x2 flatbed to more than USD 180,000 for a 30 tm crane on a heavy 8x4 carrier. This guide explains how lifting moment, geometry, carrier and body fit together, how to read the load chart, what the outriggers need from the ground, the safety devices an inspector will test, the certification routes, the price bands, running costs and the inspection schedule.

Lifting moment, not tonne rating, is the number that matters

Lifting moment is capacity multiplied by working radius, expressed in tonne-metres (tm). A 40 tm crane can lift about 4 t at 10 m or 2 t at 20 m, subject to the load chart and the outrigger configuration. An 8 tm crane lifts roughly 4 t at 2.5 m and about 1 t at 8 m. Two cranes both sold as "10 tonne" can therefore behave very differently once the boom extends, because the boom length, the section count and the outrigger span differ. Four terms decide the specification, and a quotation that does not state them cannot be compared:

• Rated capacity: the maximum load at minimum radius, full outriggers, firm level ground. It is a ceiling, not a working figure.
• Lifting moment: the product of load and radius that the structure and hydraulics can sustain. Compare cranes on this number.
• Working radius: the horizontal distance from the slewing centre to the load hook. Capacity falls as radius grows.
• Boom length and sections: reach at height and at radius. More sections mean more reach and more weight on the carrier.

Start every enquiry with three numbers: the load in tonnes including the rigging, the radius at which it must be placed, and the height it must clear. A crane sized from those three numbers is cheaper than a crane sized from a catalogue headline and then re-ordered.

Straight boom or knuckle boom

The two boom families do different work, and the choice changes the operator's position, the body layout and the price more than the tonnage badge does.

Both types are available with top-seat controls, cable remote or radio remote; the control choice affects where the operator stands and how the load is kept in view. If a single truck must load and unload its own cargo on public roads, a knuckle boom mounted behind the cab is usually the better fit. If the crane mainly lifts at a fixed site with long reach, a straight boom gives more radius per dollar.

CLW mounts these cranes on truck mounted crane chassis from ISUZU, DONGFENG, SINOTRUK HOWO and SHACMAN, in straight and knuckle configurations from 6.3 tm to 30 tm. Where a fleet already runs a cargo and dump truck or a refrigerated truck on the same carrier, one chassis family keeps training and spare-parts stock simple.

Read the load chart before you sign

The load chart is the only document that states what the crane may lift, and it is read in four dimensions: radius, boom length, boom angle and outrigger configuration. Most charts show separate columns for full outriggers, half outriggers and free-on-wheels operation, and the capacity for "on wheels" can be a small fraction of the fully supported figure. A quotation that says "12 t crane" without the chart is a quotation for a maximum capacity that may exist only at 2 m.

Read the chart against the jobs you actually do, and mark the lifts you perform weekly on it. If three of those jobs fall outside the envelope, the crane is too small whatever its tonne badge says. If they fall inside with 20 percent margin, the crane is right-sized. Always add the weight of the rigging, the slings and any attachment to the load; a 500 kg grab on a 4.6 t lift is a 5.1 t lift, and the chart does not care that the grab is "part of the crane".

Carrier chassis, outriggers and ground bearing

The chassis has to carry the crane, the body and the cargo, and it has to be stable when the boom is out. A crane mounted behind the cab shifts weight rearward, so the rear axle and the frame reinforcement are the first things to check. The outrigger spread determines the load each pad puts into the ground, and that number — not the crane capacity — decides whether the truck can set up on a sidewalk, a verge or a yard with a basement underneath.

Pad loads are the most underestimated figure in the quotation. A 15 t pad load on asphalt is fine; the same load on a grass verge, a paved yard over a drain, or a basement roof is a collapse waiting for the first lift. Ask for the maximum pad load per leg and the recommended pad size, then carry spreader plates or timber mats on the truck. Also check the frame: a crane mounted on an unreinforced chassis rail cracks at the mounting bolts within a season, which is why the body builder should supply the reinforcement drawing along with the crane.

Body configurations: flatbed, cargo, service and heavy carrier

The body is not a neutral platform: it sets the deck length, the cargo capacity left after the crane, and how the crew secures the load. Four configurations cover most orders.

Whichever configuration is chosen, the crane and the body should be designed together. A crane ordered separately and fitted to an existing deck usually ends up with the mounting bolts through a single skin of steel, the outrigger beams crossing the cargo space, and the deck rated for a load it can no longer carry.

Safety devices and interlocks

A loader crane is lifting equipment, and the devices that protect the crew are specified on paper before they are tested on site. The specification should include a rated-capacity limiter or overload protection that stops the crane before the structural limit, an angle and length sensor feeding the same system, outrigger position sensing that prevents operation until the legs are deployed and locked, a level indicator, an emergency stop at both the operator station and the ground, and a boom lock for road travel with a switch that prevents driving while the boom is out of its cradle. Where personnel lifting is permitted, the man basket needs its own rated attachment, a gate that cannot open in flight, and a documented procedure that complies with the standard the market applies.

Two items are frequently missing and always noticed by auditors: a load moment indicator with a calibration certificate, and a logbook in which every inspection, repair and test is recorded. A crane without its logbook cannot prove it is safe, and a crane without a calibrated limiter cannot prove it will stop.

Attachments and personnel lifting

Below-hook attachments change the duty and the rating. A grab, an auger, a clamshell or a winch adds weight at the hook, which reduces the usable capacity exactly as a heavier load would; it also changes the load's centre of gravity and, for grabs, the wind area. Ask for the crane's attachment compatibility list and the derated capacity with each tool fitted, and remember that the attachment's own rating may be lower than the crane's.

Personnel lifting is a separate regime. In most markets lifting people with a crane is only permitted with a purpose-built man basket, a rated and marked attachment point, a fall-protection harness anchored inside the basket, and an operating procedure that follows the market's standard — EN 14502-1 in Europe, and national equivalents elsewhere. Some markets prohibit it outright. If personnel lifting is part of the duty, say so at quotation stage: a crane ordered for material handling and later used for people is a compliance failure waiting for an accident.

Certification, registration and inspection regimes

A crane truck carries two approval tracks like any other special vehicle: the vehicle, and the lifting equipment. The vehicle needs the usual homologation, emissions and weight documents. The crane needs conformity with the loader-crane standard the market applies — EN 12999 in Europe and many export markets — plus, in most jurisdictions, a periodic inspection regime with a competent person or an accredited body, a load test at installation, and a certificate that names the machine's serial number.

Price bands in 2026 and what the quotation must include

The bands below are factory-direct, FOB China, for a standard build with the crane, flatbed body, outriggers and basic safety devices, early 2026. Boom type, control system, attachment package, deck specification and right-hand drive move the figure.

• 6.3–8 tm knuckle boom, 4x2 light flatbed: roughly USD 42,000–62,000
• 10–12 tm knuckle or straight boom, 4x2 medium: roughly USD 65,000–95,000
• 16–20 tm crane, 6x4, reinforced deck: roughly USD 95,000–135,000
• 25–30 tm crane, 8x4, heavy carrier deck: roughly USD 135,000–180,000
• Radio remote control and load moment indicator: add 6–12 percent
• Attachment package (grab, auger, winch, basket): priced per tool, typically USD 3,000–9,000 each

Compare the same line items: crane make and lifting moment, boom section count, control system, outrigger spread and pad size, deck thickness and lashing points, frame reinforcement drawing, safety device list and load chart with the delivered serial number. A quotation that gives only "16 t crane truck, USD 110,000" cannot be compared, because the two cranes may differ in lifting moment, in outrigger span and in whether the deck can carry the cargo the crane was bought to load.

What a crane truck costs to run for five years

Purchase is roughly a third of the five-year bill. The table is an illustrative model for a 16 tm crane on a 6x4 carrier covering 40,000 km a year and 700 crane hours, with annual lifting inspection included. Your rates will differ; the order of the items rarely does.

The lesson is not the exact total but the pattern: fuel dominates, and the crane items that protect the certificate — inspection, limiter calibration, pins and bushes — are small enough that skipping them is tempting and expensive. A crane that loses its inspection certificate stops earning, whatever its condition.

The request for quotation in twelve points

Send these twelve answers with the destination port and the job list, and a builder can return a line-item quotation rather than a range.

Lead time, inspection and export

CLW builds to MIIT catalogue requirements in an ISO-certified factory. Export files include certificate of origin, commercial invoice, packing list, bill of lading, crane test report and load chart on request. Standard crane trucks up to 20 tm take 30–45 working days after deposit and drawing approval; 25–30 tm units and heavy decks take 45–65 working days. Attachments and radio controls add a week or two.

Factory acceptance inspection should include a functional test of every safety device, a load test at the rated capacity with the chart supplied, an outrigger deployment test, and a driving test with the boom in its cradle. If travel is not possible, ask for video evidence of the load test and the limiter calibration. Small units ship on a flat rack or by RoRo; 6x4 and 8x4 crane trucks normally move by RoRo. More body types are covered in the buying guides.

Inspection and service schedule

Working safely: ground, gusts and the person on the hook

Most crane incidents start on the ground. Outriggers on a slope, a verge, a drain cover or a basement deck will sink or collapse, and the truck follows. Use spreader plates sized for the stated pad load, set up on ground you have looked at, keep the legs away from trenches and manholes, and re-check the level indicator after the first lift. Never operate with the legs half-extended or the crane on wheels unless the chart explicitly permits it.

Wind matters more than most operators expect, because it acts on the load's area rather than its weight; a panel, a sign or an empty container can govern the lift on a day when the weight is well inside the chart. Stop when gusts exceed the crane's rated wind speed, and never use the crane to drag a load sideways. For personnel lifting, the basket is not a shortcut for a missing platform: it needs its rated attachment, the harness anchor, the gate and the written procedure, and it needs a trained operator who has rehearsed the descent. A crane that is safe on paper still injures people when the crew is in a hurry.

Six expensive buying mistakes

• Ordering by tonne badge. The load chart decides the lift, and a 12 t crane at 10 m may lift less than a 6.3 tm crane at 4 m.
• Ignoring the outrigger pad load. A truck that cannot set up on the client's ground is a truck that does half the jobs it was bought for.
• Fitting the crane to an existing deck. Unreinforced mountings crack the frame and reduce the cargo capacity at the same time.
• No load moment indicator or calibration. An uncalibrated limiter is a device that stops nothing.
• Skipping the attachment derating. A grab, a winch or a basket adds weight at the hook and reduces capacity exactly as cargo would.
• Personnel lifting without the compliant package. A basket that is not rated for people is an accident and an insurance dispute waiting to happen.

Next step

Send your heaviest lift, its radius and height, the jobs you perform weekly and your destination port through the contact page to receive a configuration with the load chart, the pad load calculation and a line-item quotation. If you are still comparing body types, read the rest of our buying guides first: on the same chassis a crane truck, a tipper and a tanker are different machines, and the lifting specification usually matters more than the badge on the grille.