The PB38BT-4R-E is a lattice tower concrete placing boom — a free-standing placing boom built on a tower-crane-style lattice mast. Rather than climbing a structure, riding formwork or standing on outrigger legs, it stands on its own mast to a free-standing height of 40 m and places concrete over a 38 m radius from a 4-section boom on top. The mast gives the height; the boom gives the reach. And because it carries a self-erecting lifting mechanism, it raises and adds its own standard mast sections, growing taller as construction rises — much as a tower crane self-erects.
This combination of a free-standing tower and a long placing boom makes the PB38BT-4R-E the tool for large, tall pours where neither a climbing boom nor a ground-set spider can give both the height and the reach needed from one independent position. It runs electro-hydraulic proportional control — the “E” in the model name — for smooth, low-shock boom movements, slews a full 360°, and is operated by radio remote. Fed by a separate concrete pump up the mast, it runs on a 380V/50Hz supply with a 37.5 kW motor, and is built and tested at the TRUEMAX factory in Haining to ISO 9001:2015 and CE standards, within a line exported to over 120 countries.
1. Free-standing lattice tower — Stands on its own lattice mast to a 40 m free-standing height — no structure to climb, no outriggers, no crane to hold it up; it is an independent tower in its own right.
2. Self-erecting mast — A lifting mechanism with a telescopic cage (including pump and cylinder) raises and adds standard mast sections by itself, so the tower grows in height as the build rises.
3. Tower plus placing boom — It combines a tower-crane-style mast with a placing boom — the mast can add sections for height while the boom places concrete, giving both in one machine.
4. 38 m four-section boom — A 4-section R-fold boom with a long 14.91 m first arm reaches a 38 m radius, covering a wide area from the top of the tower.
5. Electro-hydraulic proportional control — Proportional control gives smooth, low-shock boom movements for precise, stable placing — finer than the switch control of the smaller booms.
6. Full 360° gear slewing — Gear-driven slewing turns the boom a complete circle at the top of the mast.
7. Radio remote control — Operated by wireless radio remote for easy control from a clear vantage point.
8. Quality components — Hydraulic and electrical parts from well-known international brands for stable, reliable operation, on a 380V/50Hz, 37.5 kW drive.
