XCMG SQZ2600 Truck Mounted Crane

The 8-section telescopic boom uses a dodecagon (12-sided) cross-section instead of the rectangular profile common in lower-cost truck-mounted cranes. The polygonal profile distributes bending and torsion stresses more evenly across the boom wall, reducing the local buckling risk at high lift angles or off-axis loads — important for the long working ranges typical of 8-section boom configurations.

Proportional pilot valves give the operator precise micro-motion control for equipment positioning. The boom extension uses a differential hydraulic circuit that switches between high speed (rapid deployment to working radius) and low speed (fine positioning into the lift target) — the operator selects mode based on lift phase rather than running every motion at a compromise speed.

XCMG-specified wide-temperature hydraulic oil maintains operating viscosity across a −23 °C to +88 °C ambient range. Eliminates the seasonal oil change between winter and summer that conventional hydraulic-oil specifications require — reduces scheduled maintenance interruptions and consumable cost for fleet operators in cold-climate or wide-climate-range markets.

The slewing mechanism uses a double high-torque reducer for stable rotation under load with smooth braking. The unloading structure is built as an integrated square-box frame, providing balanced lift and carry capacity across the cargo bed regardless of load position.

The torque limit system cuts boom motion before the chassis stability envelope is exceeded — a safety hard-stop independent of operator judgment. The crane is operable from either the upper deck station or the lower ground-side station; each station has its own display screen and ignition control, so the operator works from whichever position gives the best load visibility without walking back and forth between stations.