What to Check Before Buying a Truck Mounted Crane from China

Buying a truck-mounted crane from China comes down to one hard truth: the crane nameplate rarely tells you what the truck can actually do. A “10-ton” crane does not lift 10 tons at full reach, and the chassis carrying it may not legally carry much cargo once the crane, outriggers, and subframe are bolted on. Before you send a deposit, you need to confirm the load chart, the chassis ratings, the axle loading, the emission configuration, and the destination-market rules that decide whether the truck can even be registered. Get those wrong and a cheap unit becomes an expensive yard ornament. This guide walks through what to check, in the order that matters.

Mục lục

Start With the Job, Not the Crane Size

Most buyers start by picking a tonnage — 5-ton, 8-ton, 12-ton — and then shop for a truck to match. That is backwards. The crane’s real capability is defined by the load chart, which shows how much the crane can lift at each working radius and boom length. The further out you reach, the less you lift. A crane rated 12 tons at minimum radius may only lift 2 or 3 tons at a long, high reach.

So the first questions are operational, not catalog-based:

What is the heaviest single load you need to lift, in kilograms or pounds?
At what horizontal working radius from the crane’s center of rotation?
At what lifting height, and does the load need to clear an obstacle?
How often does the crane operate — a few lifts a day, or continuous duty?
Will the truck also carry cargo on the deck, or is the crane the only payload?
What is the road surface and access at both the pickup and drop-off points?

Those answers drive everything else. A unit that spends most of its life lifting pallets at 3 meters needs a very different crane and chassis than one that lifts steel sections at 12 meters over a construction site fence.

The Load Chart Is the Real Specification

When you request a quotation, ask for the crane’s load chart as a document, not a single headline number. The chart shows rated capacity at each radius and boom angle, and it is the only figure that should drive your selection. A competent supplier will send it without hesitation. If a supplier only quotes a nominal tonnage and avoids the chart, that is a warning sign.

Pay attention to these specific points:

Rated capacity vs. actual capacity. Rated capacity assumes the crane is on level ground with outriggers fully extended. Working on a slope, on soft ground, or with outriggers partially extended reduces usable capacity.
Boom sections. More hydraulic sections extend reach, but each section adds weight and cost. Match the number of sections to your real working radius, not the maximum the brochure shows.
Outrigger spread. Wider outrigger spread improves stability and capacity, but it needs more space. On narrow urban streets or tight yards, a crane that cannot deploy its outriggers is useless.
Crane mounting position. Mounted behind the cab, behind the deck, or at the rear changes the weight distribution and how much cargo deck you keep.
Crane deadweight. Every kilogram of crane, subframe, and outrigger is a kilogram you cannot load as cargo.

This is where most first-time buyers make their costliest mistake: they size the crane for the biggest lift they can imagine, then discover the truck can barely carry anything on the deck because the crane and its reinforcement have eaten the payload.

Payload, GVW, and the Weight You Can Actually Carry

The relationship between the crane, the chassis, and legal payload is where the numbers get uncomfortable. The basic formula is simple, but the inputs are often ignored:

Legal payload = GVW (or GVWR) − curb weight − crane and subframe weight − fuel, driver, and tools

Three separate limits apply, and all three must pass:

Gross vehicle weight (GVW). The maximum total weight the truck is rated and legally allowed to run at.
Axle load limits. Front and rear axle ratings, and the legal axle-weight limits in the destination country. A truck can be under GVW and still overload one axle.
Tire and suspension ratings. These cap what the axles can physically support.

Crane weight is often underestimated. A mid-size articulated crane with subframe and outriggers can add well over a tonne to the chassis, and that weight sits behind the rear axle or over it, depending on mounting. That shifts the load distribution and can push the rear axle over its limit even when the deck is empty.

Check	What It Tells You	Common Mistake
Crane load chart	Real lifting capacity at your radius and height	Using nameplate tonnage only
Crane + subframe weight	Payload you lose before any cargo	Ignoring it in payload math
GVW / GVWR	Total legal operating weight	Confusing with payload
Axle ratings	Per-axle limits, front and rear	Checking GVW only
Deck length and area	Cargo you can physically load	Assuming deck = payload
Destination axle law	What the country actually permits	Using factory figures as legal

Always request the chassis’s rated axle capacities and the crane’s installed weight as separate figures. If the supplier cannot provide them, you cannot verify the payload — and you should not buy on that basis.

Chassis and Drive Configuration

The crane is only as good as the chassis under it. Truck-mounted cranes are typically built on 4×2, 6×4, or occasionally 8×4 chassis depending on the crane size and cargo requirement. The choice is driven by axle capacity, wheelbase, and how the truck will be used.

4×2. Lighter, cheaper, more maneuverable. Suitable for smaller cranes and urban work, but rear axle capacity and stability limit crane size.
6×4. The most common configuration for mid-size cranes and mixed crane/cargo duty. Higher rear axle capacity and better traction when loaded.
8×4. Higher total axle capacity for larger cranes and heavier decks, but longer, heavier, and more expensive to run.

Wheelbase matters more than most buyers expect. A longer wheelbase improves stability when the crane is working over the side, but it reduces maneuverability and can overload the rear axle depending on where the crane is mounted. Crane mounting position and wheelbase must be considered together, not separately.

Engine, transmission, and axle ratio should match the duty cycle. A crane truck that mostly drives between urban sites does not need the same gearing as one that runs long highway distances between jobs. Over-speccing the engine adds cost without improving the work; under-speccing it makes the truck slow and thirsty when loaded.

For heavy-duty chassis options across construction and lifting applications, buyers can review the range of các giải pháp dành cho xe công trình hạng nặng to understand how chassis and superstructure are matched.

The Crane Itself: What to Verify Beyond Tonnage

Once the load chart, chassis, and payload math are settled, the crane hardware deserves its own checklist. These are the details that determine whether the crane lasts and whether it is safe:

Boom construction. Box-section booms are common; check the material grade and whether the sections are welded or formed.
Hydraulic system. Pump type, control valve configuration, and hose routing. Single vs. multi-function controls affect how fast and precisely the crane works.
Outrigger type. Manual, hydraulic, or fully hydraulic. Hydraulic outriggers are faster but add cost and maintenance.
Stability and counterweight. Confirm the crane is properly matched to the chassis so it is stable at rated capacity on level ground.
Safety devices. Overload protection, boom angle indicators, and load moment limiter, where applicable.
Controls. Top-seat, side-seat, or remote. Remote controls improve safety and efficiency for repetitive lifts but add cost.

For a broader look at available crane configurations and how they are specified, the cần cẩu gắn trên xe tải range shows how different crane sizes and chassis combinations are packaged for export buyers.

Duty Cycle and Productivity

A crane truck’s value is measured in work done per day, not in the crane’s maximum rating. Two trucks with the same crane can have very different productivity depending on how the whole unit is configured.

Productivity factors to consider:

Number of lifts per cycle. More lifts per trip means more crane operating time, which favors faster controls and hydraulic outriggers.
Setup and stow time. Deploying outriggers, extending the boom, and stowing everything takes time. On short, frequent jobs, setup time dominates.
Travel time between jobs. Long travel distances favor chassis comfort, fuel economy, and highway gearing.
Loading and unloading method. If the crane also loads the cargo deck, the crane cycle and the truck cycle interact.
Operator skill. A well-matched crane and truck lets a competent operator work faster; a poorly matched one forces slow, careful work.

When you model the numbers, work in cost per lift or cost per tonne moved, not just purchase price. A slightly more expensive truck that completes more lifts per day can pay back the difference in a single season.

Mức tiêu thụ nhiên liệu: Yếu tố nào thực sự ảnh hưởng đến nó?

Fuel consumption for a crane truck depends heavily on how the truck is used, and there is no single figure that applies to all duty cycles. The crane itself is usually powered by a PTO or a separate engine, and crane operation burns fuel even when the truck is stationary.

The main variables are:

Gross vehicle weight and how often the truck runs fully loaded
Route profile — urban stop-start vs. highway running
Gradient and altitude
Idling time during crane operation
Axle ratio and tire specification
Driver behavior and average speed
Climate and ambient temperature

Any fuel figure you are quoted should be treated as an indicative operating range for a defined duty cycle, not a fixed number. Ask the supplier to state the assumptions behind any consumption estimate: gross weight, route, load factor, and whether crane operation is included.

Maintenance and Parts Availability

Downtime usually costs more than the repair itself. A crane truck that is off the road for two weeks waiting for a hydraulic hose or a crane control valve can lose more revenue than the part costs. Maintenance planning should start before purchase, not after delivery.

Routine checks to plan for:

Hàng ngày: tire condition and pressure, hydraulic leaks, hose condition, outrigger function, lights, warning indicators, and crane safety devices.
Định kỳ: engine oil and filters, transmission and differential oil, brake system, suspension and wheel bearings, hydraulic oil condition and filter, PTO engagement, crane pins and bushings, and outrigger cylinders.
Crane-specific: boom wear pads, wire rope or hydraulic hose condition, control valve function, and load moment limiter calibration where fitted.

Specific service intervals must come from the actual vehicle and component manufacturer’s manuals for the exact model and configuration. Do not accept generic intervals from a quotation.

Parts availability is a separate issue. Before buying, confirm which common wear parts are available locally or through the supplier’s export parts program, and what the realistic lead time is. Hydraulic hoses, filters, brake components, and crane wear parts are the items that most often cause downtime.

Total Cost of Ownership, Not Just Purchase Price

The purchase price is the smallest part of the story. A proper cost comparison for a crane truck includes:

Yếu tố chi phí	Những nội dung cần bao gồm
Giá mua	Chassis, crane, subframe, deck, options
Vận chuyển hàng hóa	Phương thức vận chuyển, phí cảng, vận chuyển nội địa
Nhập khẩu và tuân thủ	Duties, taxes, registration, homologation
Fuel or energy	Based on real duty cycle, not brochure figures
Lốp xe	Replacement interval and cost per tire
Bảo trì theo lịch trình	Parts and labor over expected service life
Các công việc sửa chữa ngoài kế hoạch	Hydraulics, PTO, chassis, crane components
Thời gian ngừng hoạt động	Lost revenue during repair and parts wait
Giá trị còn lại	Expected resale at end of ownership

Two trucks with the same purchase price can have very different lifetime costs if one has better parts availability, simpler maintenance, or a stronger residual value. Buyers evaluating crane trucks should compare the full ownership picture, not just the invoice.

Tuân thủ quy định của thị trường đích

There is no such thing as a globally compliant truck. Every destination market has its own rules, and a configuration that is legal in one country may be impossible to register in another. Before ordering, confirm:

Tiêu chuẩn khí thải bắt buộc để đăng ký xe
Các yêu cầu về chứng nhận tương đương hoặc phê duyệt kiểu loại
Axle-weight and total-weight limits
Vehicle dimension limits (length, width, height)
Cấu hình hệ thống lái — lái bên trái hoặc lái bên phải
Yêu cầu về chiếu sáng và đánh dấu
Các yêu cầu về phanh và an toàn
Chất lượng nhiên liệu và tình trạng sẵn có của DEF/AdBlue khi cần thiết
Local service capability for the chassis and crane

These requirements change over time and vary by market. Do not rely on a supplier’s general statement that a truck “meets international standards.” Ask for the specific emission configuration and confirm the registration requirements with the destination country’s transport authority before committing to an order.

Các vấn đề cần lưu ý về vận chuyển và nhập khẩu

Crane trucks are awkward cargo. They are long, heavy, and often too tall for a standard container once the crane and boom are fitted. The realistic shipping options are usually:

RoRo (roll-on/roll-off). Common for driveable units, but the truck must be in running condition and within the vessel’s height and weight limits.
Breakbulk. Suitable for oversized or non-driveable units, with lifting and securing arranged at both ports.
Flat rack. Used for units that fit within flat-rack dimensions and can be secured properly.

The choice depends on truck dimensions and weight, whether it can be driven, quantity, route, and destination port. Shipping cost should be quoted with a clear Incoterm — FOB, CFR, or CIF — and buyers should understand exactly what each term includes. A full understanding of how heavy trucks move from factory to destination port is covered in this guide to Cách vận chuyển xe tải hạng nặng ra nước ngoài.

Import costs — duties, taxes, port charges, and inland transport — are destination-specific and should be confirmed with a customs broker before the order is placed, not after.

Cách đánh giá nhà cung cấp

Once you know what you need, the supplier question becomes practical rather than emotional. Use a clear evaluation framework:

Technical response quality. Does the supplier provide load charts, axle ratings, and installed crane weights when asked?
Configuration flexibility. Can they match the crane, chassis, and deck to your actual duty cycle, or do they only offer fixed packages?
Tài liệu. Do they provide the technical file, load chart, and compliance information needed for registration?
Parts and service support. Is there a realistic spare-parts plan and warranty scope in writing?
Kinh nghiệm xuất khẩu. Do they understand shipping methods, Incoterms, and destination-market requirements?
Giao tiếp. Are answers specific and consistent, or vague and evasive?

Chinese Truck Factory works within this framework by providing configuration-matched crane trucks, technical documentation for the specific order, and export support that covers shipping method selection and destination requirements. Buyers who want to move from general research to a specific configuration can review the available crane truck options and request a technical response against their own duty cycle.

Yêu cầu rà soát cấu hình xe cẩu

Những điều cần chuẩn bị trước khi yêu cầu báo giá

A clear inquiry gets a clear answer. Before contacting any supplier, prepare the following:

Quốc gia đích và cảng đích
Application — construction, utility, municipal, logistics, or other
Maximum load weight and the working radius and height at which it must be lifted
Whether the truck will also carry cargo, and how much
Required deck length and body configuration
Daily mileage and road conditions
Gradient and climate at the operating site
Preferred drive configuration (4×2, 6×4, 8×4)
Steering side required
Tiêu chuẩn khí thải bắt buộc để đăng ký xe
Quantity and required delivery timing
Any special options — remote control, hydraulic outriggers, extra boom sections

Suppliers who receive this information can quote a configuration that actually fits, rather than a generic package that may not work. It also makes comparison between suppliers meaningful, because you are comparing like for like.

Các câu hỏi thường gặp

How do I choose the right crane size for my application?

Start with the heaviest load and the working radius and height at which you need to lift it. Use the crane’s load chart to find a crane that can handle that lift with margin, then confirm the chassis can carry the crane plus your required cargo within legal axle and GVW limits. Nameplate tonnage alone is not a reliable guide.

Can I add a larger crane to a standard chassis later?

Adding a larger crane after purchase usually requires reinforcing the chassis, changing the subframe, and rechecking axle loads. In many cases it is cheaper and safer to specify the correct crane and chassis combination at the factory than to modify an existing truck.

How much cargo can a crane truck carry?

Legal payload equals GVW minus curb weight, minus crane and subframe weight, minus fuel, driver, and tools. Because the crane and its reinforcement can weigh well over a tonne, the remaining cargo capacity is often less than buyers expect. Always calculate it from the specific chassis and crane combination.

What emission standard should I order?

It depends entirely on the destination country’s registration rules. Confirm the required emission standard with the local transport authority or a customs broker before ordering, and make sure the supplier confirms the exact emission configuration in the order documents.

How are truck-mounted cranes shipped from China?

Most driveable units ship by RoRo. Units that are too tall, too heavy, or not driveable may ship breakbulk or on flat racks. The best method depends on the truck’s dimensions and weight, the route, and the destination port. Shipping cost should always be quoted with a clear Incoterm.

Cần cẩu gắn trên xe tải cần những công việc bảo dưỡng nào?

Daily checks cover tires, hydraulic leaks, hoses, outriggers, lights, and safety devices. Periodic maintenance covers engine, transmission, axles, brakes, hydraulic oil and filters, PTO, crane pins, and outrigger cylinders. Specific intervals must come from the actual vehicle and component manuals for your model.

How do I compare quotations from different suppliers?

Compare configurations, not just prices. Check the crane load chart, chassis axle ratings, installed crane weight, deck specification, emission configuration, warranty scope, and Incoterm. A lower price often reflects a smaller crane, a lighter chassis, or a less complete specification, so the comparison must be like for like.

The right truck-mounted crane is not the one with the biggest nameplate number or the lowest price. It is the configuration where the load chart matches your real lifts, the chassis carries the crane and your cargo within legal axle limits, the emission and steering configuration suit the destination market, and the maintenance and parts plan keeps the truck working. Confirm those points in writing before you commit, and the truck you receive will do the job you actually bought it for.