Power stirrer HITACHI UM16VST(LA) 1500 W, max 650 RPM, M14 spindle, max stirrer Ø 16 cm, weight 5.6 kg

The HITACHI UM16VST(LA) power stirrer is a corded electric mixer designed for demanding on-site mixing tasks. With a 1,500 W input motor, two-speed gearbox and variable-speed dial allowing up to 650 RPM, this compact unit supports stirrer paddles up to 160 mm in diameter. The tool features an M14 spindle thread for common mixing accessories, soft-start circuitry to reduce initial torque, and two large bumpers that protect the housing during use. Weighing 5.6 kg and occupying a small footprint (215 × 335 mm), the stirrer is intended for construction, renovation and other heavy-material mixing jobs where portability and controlled power are required.

Advantages

The combination of a 1,500 W motor, two-speed gearbox and a variable-speed dial provides precise control over mixing speed for different materials. Soft start reduces sudden torque at switch-on, improving operator control and safety. The M14 spindle thread accepts a wide range of standard mixing paddles, and the two large bumpers protect the casing and maintain stability when the tool is rested between uses. The relatively compact size and 5.6 kg weight make the unit easier to transport and handle on site compared with larger stationary mixers.

Suitable for

• Mixing concrete, mortar and cement-based compounds
• Preparing adhesives, leveling compounds and plaster
• On-site renovation and small to medium construction mixing tasks
• Any application requiring controlled, heavy-duty stirring with an M14-mounted paddle

Key specifications

• Maximum stirrer diameter: 160 mm
• Input power: 1,500 W
• Maximum speed: 650 RPM (variable via dial)
• Spindle thread: M14
• Number of speed ranges: 2 (gearbox) plus variable dial
• Soft-start feature: yes
• Weight: 5.6 kg
• Footprint (approx.): 215 × 335 mm
• Protective bumpers: two large bumpers
• Colour: Black, Green

How to use

Fit a compatible M14 mixing paddle of appropriate diameter (up to 160 mm) securely into the spindle. Select the suitable gearbox range for the material, then adjust the variable-speed dial to the required RPM, starting at a low speed. Engage the soft-start by switching on and allow the motor to reach operating speed before increasing throttle. Move the paddle through the material steadily to ensure even mixing and avoid lifting the paddle out of the material while running. After use, turn the machine off, allow it to stop fully, and clean the paddle and housing of residual material.

Usage recommendations

Use personal protective equipment (gloves, eye protection and dust mask) when mixing powders and wet cementitious materials. Select a paddle diameter and type suitable for the specific material to avoid overloading the motor. For prolonged or continuous work, allow periodic cooling intervals and inspect the paddle attachment for secure fitment. Follow local safety and electrical guidelines when operating a corded power tool on construction sites.