Allen Engineering PRO446TC – Walk-Behind Trowel

The PRO446TC from Allen Engineering is a 46-inch walk-behind trowel powered by a reliable Honda GX390 engine and equipped with a variable-speed torque converter clutch. It delivers powerful, adjustable rotor speeds for maximum control and efficiency on large slab finishing jobs.

Description

Allen Engineering PRO446TC: Precision Speed and Power for Demanding Slabs

High-Output Control for Professional Finishers

The PRO446TC from Allen Engineering is a premium 46-inch walk-behind concrete trowel built for contractors who demand torque, precision, and productivity. Designed as part of Allen’s trusted Pro Series, the PRO446TC combines advanced clutch technology with rugged construction, making it a reliable concrete finishing machine for today’s toughest jobsite conditions. Whether you’re floating early or finishing late, this machine ensures consistent slab quality and faster project completion.

Advanced Torque Converter Clutch Technology

What sets the PRO446TC apart is its variable-speed torque converter clutch. Unlike traditional centrifugal clutches used in many trowels, this system offers a broader rotor speed range and seamless transitions between floating and finishing. With more control over torque and speed, operators can adjust performance on the fly, making it ideal for changing weather, mix conditions, and diverse slab requirements. The result is greater flatness, less manual labor, and higher overall productivity.

Honda GX390 Power for Reliable Performance

The PRO446TC runs on the proven Honda GX390 engine, known for dependable torque, fuel efficiency, and long-lasting performance. With a direct-drive gearbox, the machine maximizes power transfer to the rotor while eliminating the maintenance issues common with belts. Its 46-inch rotor provides excellent coverage, making it the right tool for medium and large pours alike. For contractors who value consistency, this concrete trowel delivers professional results job after job.

Operator Comfort and Built-to-Last Durability

Allen designed the PRO446TC with operator-friendly features like the Rapid Pitch handle system, allowing quick and easy blade adjustments without slowing down. Ergonomic grips reduce fatigue during long pours, while the heavy-duty frame and reinforced gearbox stand up to the demands of daily use. A built-in lifting hook simplifies transport, ensuring the concrete finishing machine remains efficient both on and off the slab.

Why Choose the PRO446TC?

  • Honda GX390 engine delivers reliable, long-term performance
  • Variable-speed torque converter clutch provides unmatched control
  • 46-inch rotor offers wide coverage for large pours
  • Direct-drive gearbox reduces maintenance and power loss
  • A professional-grade choice among Allen trowels for serious contractors

Finish Smarter with the PRO446TC

When precision, torque, and durability matter, the PRO446TC delivers. It’s the walk-behind concrete trowel built for contractors who want the best speed control, reliable power, and slab consistency. Add the PRO446TC to your fleet and experience the next level of professional-grade finishing.

Specifications

ENGINE
HONDA GX390 / 389 cc
HORSEPOWER CLASS
13 hp / 9.7 kW
FUEL TYPE
Gasoline
ROTOR DIAMETER
46 in (4-Blades) / 117 cm
MAXIMUM ROTOR SPEED
10-180 rpm
TROWEL ARMS & SPIDER
Super Duty
WEIGHT
315 lb / 142 kg
DIMENSIONS (L X W X H)
78 x 48 x 39 in / 198.1 x 121.9 x 99.1 cm