12.7 m³ & 14.7 m³ | Two volumes. One uninterrupted workflow.
One mixer philosophy, built to keep every shift calm and productive. Less friction, more rhythm, and reliable output from the first pour to the last.
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Pick the capacity that matches your route density and batching tempo, without changing the STU build approach.
Nominal 12.7 m³ | Geometrical 19.930 m³ | Capacity in water: 13.040 m³ | Drum speed 0 to 14 rev/min | Fill: 15"/m³ | Unload: 15" to 40"/m³ | Weight empty: 5,000 kg | 180° swivelling chute with mechanical jack
Nominal 14.7 m³ | Geometrical 22.800 m³ | Capacity in water: 14.316 m³ | Drum speed 0 to 14 rev/min | Fill: 15"/m³ | Unload: 14" to 40"/m³ | Weight empty: 9,700 kg | 180° swivelling chute with hydraulic jack for lifting
30MnB5 abrasion resistant steel drum walls and mixing blades, engineered for demanding daily cycles.
Drum walls and mixing blades: 4 mm 30MnB5 steel (HB 200/220) for maximum abrasion resistance.
Robust drum support rollers for smooth, reliable rotation under load.
Designed to keep discharge controlled and clean, especially under real site pressure. The 12.7 m³ uses a mechanical jack; the 14.7 m³ uses a hydraulic jack for chute lifting.
180° swivelling chute + support + mechanical jack. Abrasion resistant plate on discharging hopper. 2× inspection manholes + ladder.
180° swivelling chute + support + hydraulic jack for lifting. Abrasion resistant plate on discharging hopper. 2× inspection manholes + ladder.
2 lightweight Polystone extension chutes with holders for extended reach on both models.
600L pressurized steel water tank with additive handling capability.
Pressurized steel water tank with level indication for consistent mix management, standard on both models.
40L additive tank standard on 14.7 m³. Available by specification on 12.7 m³.
Loading Chute
Galvanised Pressurized Water Tank
Auxiliary Engine
Hardox Drum
SAF Axles
BPW Axles
Model Range
The mischievous child of the city with it's compact volume and short chassis.
Black Edition
Aerial View
Side Profile
On the Road
Discharge System
Right Profile
Green Fleet
Black Fleet
Maximum volume. Maximum output. Ready for work off road on major construction projects.
Side Profile
Dramatic View
Left Side
Ireland Spec
In the Field
STU Motor
Drone View
Not everything is 'nice', some upgrades are pure practicality.
In the Field
Global Reach
It transports ready mixed concrete and keeps the mix agitated to maintain homogeneity. Mixing does not stop cement hydration; delivery time and workability must follow the concrete specification.
It helps prevent the concrete from starting to set and keeps all components evenly mixed until discharge.
It depends on unloading method; for pump feeding, RPM should be synchronized with pump speed for controlled flow.
Operators should align drum speed with the pump's receiving speed for a clean, controlled pour.
Approximately 20 to 30 minutes at maximum drum speed, depending on concrete intensity and site conditions.
Clean with water and suitable additive chemicals to prevent hardened concrete inside the drum.
Hardened concrete inside reduces effective unloading m³ and accelerates wear.
The drum, mixing blades, and loading/unloading chutes.
Wear parts are covered for manufacturing defects in the first year; after that, spare parts can be ordered from the producer.
Follow the maintenance labels; the system is built for intensive daily loading/unloading cycles.
Customers reported up to 50 loading/unloading cycles in 24 hours, sustained over years.
We mainly offer 12.7 m³ and 14.7 m³, and can also produce 9, 10, 12, and 15 m³ on request.
Based on local weight rules and intended operation, choose what keeps you compliant and efficient.
It indicates how much water can fill the drum to the specified maximum level, helping users understand drum geometry and behaviour.
Yes, pressurized water tank with level indication; additive handling can be configured depending on formulas and country rules.
Rear controls are provided through the control box. Controls in the cab are optional on the 12.7 m³ model and standard on the 14.7 m³ model. Remote control is configured according to the agreed specification.
Yes, customers choose based on their market's spare parts access, or source directly via STU support.
Commercial invoice, packing list, customs declarations, ATR/EUR1 where applicable, and the original COC for registration.
Parts for installed equipment are available from our stock for 5 years; equipment producers keep parts for up to 10 years.
Spare tyre + holder, night LED work lights, and galvanised protection: for uptime, safety, and durability. Automatic greasing, hydraulic steering, and remote control can be configured by specification.
A 14.7 m³ drum does not mean 14.7 m³ of concrete on every route. Concrete weighs roughly 2.4 tonnes per cubic metre, so the weight limit in your country decides how much of the drum you can legally fill. Here is how to work it out before you buy.
Read moreTransparent pricing. No hidden costs. Just a reliable mixer built exactly to your specifications.
01
Nominal Capacity
12.7 m³
Geometrical Volume
19.930 m³
Capacity in Water
13.040 m³
Drum Speed
0 to 14 rev/min
Filling Capacity
15"/m³
Unloading Capacity
15" to 40"/m³ (depending on concrete slump)
Total Weight (empty)
5,000 kg
Rollers
2 pcs, Ø280 mm
Width Reference
2,500 mm
Overall Length
7,730 mm
Overall Width
2,500 mm
Overall Height
2,830 mm
Drum Tilt Angle (α)
9.5°
Height to Top (Ht)
2,827 mm
Height to Subframe (Hs)
1,773 mm
Total Length (Lt)
7,727 mm
Drum Axis Length (La)
6,004 mm
Rear Overhang (Lp)
1,184 mm
Drum Material
30MnB5 abrasion resistant steel, 4 mm (HB 200/220)
Discharge
180° swivelling chute + mechanical jack
02
Nominal Capacity
14.7 m³ (maximum)
Geometrical Volume
22.800 m³
Capacity in Water
14.316 m³
Drum Speed
0 to 14 rev/min
Filling Capacity
15"/m³
Unloading Capacity
14" to 40"/m³ (depending on concrete slump)
Total Weight (empty)
9,700 kg
Rollers
2 pcs, Ø280 mm
Width Reference
2,500 mm
Overall Width
2,500 mm
Drum Tilt Angle (α)
9.5°
Height to Top (Ht)
2,827 mm
Height to Subframe (Hs)
1,773 mm
Total Length (Lt)
7,727 mm
Drum Axis Length (La)
6,004 mm
Rear Overhang (Lp)
1,184 mm
Drum Material
30MnB5 abrasion resistant steel, 4 mm
Discharge
180° swivelling chute + hydraulic jack for lifting
03
Axles
3× 12 tonne (SAF / BPW / TRAX, configurable)
Suspension
Air suspension
Braking System
2S-2M Wabco or Knorr EBS
Brake Chambers
T24/30 emergency + 30/30 service (specified)
Brake Type
Disc or drum configurations (by specification)
King Pin
2" options available (by specification)
Water Tank
600L pressurized steel