A truck mounted crane intended for heavy lifting must combine predictable load control, stable support, and serviceability that fits the jobsite. Owners and fleet managers should focus on mechanical design, control layout, and service access to keep machines working across varied lifting tasks.

Load Capacity and Working Radius

Review manufacturer load charts and confirm rated capacity at the working radius you expect to use most often. Pay attention to the difference between moment rating and single-point lift value. Test charts under real boom extension and angle conditions so the crane does not reach limits during normal lifts.

Boom Design and Reach Options

Straight telescopic booms provide long reach with simple extension stages. Articulating booms add flexibility for confined spaces and angled handling. Check section count, maximum extension, and any jib options that increase working height or outreach when the main boom is near full extension.

Outriggers and Ground Support

Examine outrigger type and maximum spread. Wide spans reduce ground pressure and improve stability on soft surfaces. Look for adjustable pads, automatic leveling aids, and clear marking of safe support zones. Consider the need for outrigger mats or cribbing in remote sites with poor ground conditions.

Hydraulic System and Cooling

A responsive hydraulic system keeps load movement predictable. Check pump pressure ratings, flow control valves, and the presence of proportional control for smooth speed changes. Cooling components such as finned radiators and auxiliary coolers matter when duty cycles are long or ambient temperatures are high.

Safety Devices and Load Monitoring

Modern cranes include load moment indicators, anti-two-block sensors, and angle sensors. Inspect how the crane reports warning conditions to the operator and whether it provides intervention to prevent dangerous moves. A reliable warning and limiting setup reduces risk during complex lifts and supports operator confidence.

Control Mode and Operator Positioning

Control choices affect visibility and precision during lifts. Cabin-mounted controls give shelter and integrated displays. Remote controls allow the operator to stand where they can see the load. Check ergonomics, feedback from joysticks, and the layout of emergency stop and override switches.

Structural Material and Fabrication

Steel grade, welding method, and section geometry influence fatigue life. Request material specifications and welding procedure records for the boom and main frame. Protective coatings and corrosion treatment extend service life for cranes operating in coastal or chemically active environments.

Service Access and Spare Parts

Inspect how panels open, where filters and service points are located, and the ease of replacing common items like hydraulic seals, hoses, and sensor units. Confirm the availability of key spares and check typical lead times from the supplier so downtime can be planned and minimized.

Transport and Chassis Match

Match the crane mass and outrigger load to a truck chassis with the correct axle rating, wheelbase, and frame reinforcement. Check local road rules for gross vehicle weight and axle distribution to avoid modifications later. A balanced chassis setup improves travel stability and reduces wear on the suspension.

Inspection Checklist for Purchase

Before finalizing a purchase, run through a checklist that includes verification of load charts, boom straightness, weld condition, outrigger travel, hydraulic pressure at idle and working speed, meter functionality, control responsiveness, and documented service history for refurbished units.