Bartell Morrison B446 46in Pro Trowel Combo Blades and Hoist Hook Honda GX340

Description

Rotating four 46in blades under high-torque gas power, the Bartell Morrison B446 Pro Trowel flattens wide commercial floor placements. A commercial Honda GX340 10.7HP engine turns the rotor through dense low-slump concrete mixes. Transporting this broad 270 lb unit demands crane or trailer loading, yet the built-in hoist hook simplifies jobsite rigging.

A heavy-wall cast iron gearcase houses precision bronze worm gears and tapered roller bearings in an enclosed oil bath. The commercial Honda GX340 10.7HP OHV engine sends continuous torque through an industrial centrifugal clutch and cogged V-belt system. Four ductile iron spider arms hold blades flat against severe aggregate drag. Weighing 270 lbs unboxed, the machine maintains a wide floor stance measuring 48in wide by 76in long with the handle secured.

Key Features of Bartell Morrison B446

Industrial flatwork crews buy Bartell Morrison B446 units to maintain rigid floor schedules. Check distributor pricing to invest in this heavy-duty commercial 46in walk behind trowel with lifting hoist hook.

• The Honda GX340 10.7HP engine produces continuous torque to break suction on wet concrete slabs.
• A 46in sweep diameter covers wide floor areas to seal surfaces before hydration sets.
• Integrated hoist hook provides a secure balance point for jobsite crane and boom truck rigging.
• Fine-thread pro pitch control knob locks blade attack angles without drift under heavy loads.
• Four high-carbon steel combo blades handle both initial float panning and hard finish burnishing.
• Ductile cast iron spider arms eliminate blade flutter and prevent slab surface chatter marks.
• Tubular steel guard ring resists form impacts while offering clear operator sightlines.
• Centrifugal safety kill switch shuts down engine spark if the operator releases the handle.

Bench Diagnostics Rotor Runout Metrics

Spindle dial indicator sweeps confirm radial runout under 0.0003in TIR at the spider hub face under full rotation. Operating temperatures inside the heavy bronze gearbox settle at 143°F under continuous 60% engine load to protect oil seals. Blade speed ranges from 60 to 132 RPM, while sound levels measure 82 dB at the operator handle position. Spider arm deflection remains under 0.003in under 380 lbs of lateral drag. The drive belt maintains tension without slip across extended dyno tests.

Field Handling Maintenance Protocol

The rigid pro handle requires 13 lbs of lateral push force to swing the rotor across wet paste, demanding experienced finishers with solid forearm stamina. Do not select this heavy 46in unit for cut-up residential basements, split-level pads, or tight patio slabs.

• Drain engine oil and refill with 1.16 quarts of SAE 10W-30 every 100 operating hours.
• Grease four spider arm zerks with NLGI 2 lithium grease every 40 hours of active use.
• Inspect gearbox synthetic lubricant through the oil level check plug every 60 hours of operation.

Crate Manifest Warranty Protection

Bartell Morrison backs this trowel with a 1-Year commercial manufacturer warranty covering structural and drivetrain components. The unboxed shipping crate holds the B446 power trowel base, Honda GX340 engine, pro pitch handle, four combination blades, hoist hook kit, spark plug wrench, and an illustrated factory operations manual.