The WM120PHD Whiteman Polyethylene-Drum Plaster/Mortar Mixer is the industry’s leading solution for high-capacity, low-maintenance mixing of mortar, plaster, stucco, and specialty blends on the most demanding jobsites. Engineered by Multiquip, this 12-cubic-foot, hydraulic-drive powerhouse leverages a unique EasyClean poly drum and a 13 HP Honda GX390 engine to deliver premium performance, durability, and productivity for commercial contractors and rental professionals alike.

Product Overview

The WM120PHD stands out among mixers for its impressive 12 cu. ft. (340 L) capacity, making it the go-to for crew leads tackling large-scale masonry, restoration, or precast concrete work. Its EasyClean polyethylene drum—thick, seamless, and engineered to resist build-up, corrosion, and impact—offers one of the fastest, simplest cleanup processes available: just a few mallet taps and even the stickiest mortar or colored stucco pops right out. This not only saves time but extends the drum’s useful life significantly beyond steel alternatives in harsh field environments.

The mixer’s hydraulic drive and hydraulic dump system are engineered to mix stiffer loads, lower-slump products, and bigger batches than traditional mechanical/V-belt-driven units. This technology eliminates many wear-prone components and allows the WM120PHD to handle up to 3.5–4 bags (88 lb each) in a single fast and efficient cycle, minimizing crew fatigue and boosting overall project throughput.

Key Features & Benefits

• Hydraulic Drive System: Mixes even the most challenging, heavy, or stiff mortars with ease while reducing daily and long-term maintenance—no belts, gears, or external clutches to adjust or repair.

• Hydraulic Dump: Operator-friendly dumping saves time and prevents lifting injuries on full loads. Dual controls streamline both mixing and dumping, maximizing crew safety and output.

• EasyClean Poly Drum: Durable, rust-free, and impact-resistant. Simply tap for near-instant material removal and a cleaner mixing surface every batch.

• Honda GX390 Engine: With 13 HP and consistent, reliable starts, the jobsite-preferred Honda engine offers decades of proven performance, low fuel consumption, and a global support network for service and parts.

• Heavy-Duty Frame: Powder-coated, tubular steel with large highway-rated B78x13 tires, heavy-duty axle, and removable Schedule 80 tow tongue for easy and safe towing across jobsites or highways.

• Double-Sealed Shaft Bearings: Eight spring-loaded, grease-able seals protect the shaft for ultimate durability on abrasive or high-volume runs.

• Full OSHA/ANSI Safety Grate: Includes integrated bag cutter for quick, safe loading, and positive drum locks for safe mix and tow positions.

• Safety Relief System: Built-in hydraulics automatically disengage the blades if a jam or obstruction occurs, immediately protecting both machine and crew.

Technical Specifications

Professional Applications

• Large Masonry Crews: Powers through massive block, brick, and stone jobs with minimal cleanout delays and maximum batch consistency.

• Stucco, Plaster, & Restoration: Provides fluffy, homogenous mixes for high-volume, multi-applicator jobs including decorative finishes, fireproofing, and repair sites.

• Precast Plants: Handles heavy sand/cement ratios, grout, or aggregates—perfect for utility vaults, curb casting, and architectural units.

• Rental Fleets: Hydraulic drive, durable poly drum, and legendary Honda reliability mean fewer repairs and higher lifetime ROI for fleet owners.

Real-World Reviews & Industry Praise

• "Cleanup is unbeatable": Rental and contractor crews rave about the EasyClean drum—“Even colored mortar cleans right out, saving end-of-day labor and lost time”.

• "Top production with less crew fatigue": Hydraulic drive and dump cut down both mixing time and the risk of workplace injury, especially for 12 cu. ft. batches.

• "Outlasts the job": Users report years—even decades—of trouble-free operation, often outlasting competing steel drum or traditional mechanical drive mixers.

• "Minimal breakdowns and fast fixes": Fleets highlight straightforward greasing and easy engine service—plus no more belt or gear changes.

Maintenance & Best Practices

• Check/grease shaft bearings every 60–100 hours for maximum seal and component life.

• Rinse the drum after every batch—use a rubber mallet for stuck materials.

• Inspect drum paddles and rubber wipers for wear after high-volume runs or when switching between mortar types.

• Check hydraulic fluid monthly, especially after heavy use or extended storage.

• Confirm drum lock and safety relief function before operation; never bypass safety grates for faster loading.

Frequently Asked Questions

Q: How does the poly drum compare to steel?
A: Poly resists rust, dents, acids, and buildup far better, making it ideal for colored or specialty mortars and crews who want faster cleanout and longer drum life.

Q: Is the WM120PHD highway towable?
A: Yes, equipped with heavy-duty tires, leaf springs, and Schedule 80 tongue for jobsite and highway transport.

Q: Can it handle low-slump or high-aggregate mixes?
A: Hydraulic drive gives it extra torque for stiff, aggregate-heavy or sand-rich mixes—outperforming most traditional drive models.

Q: Who should buy the WM120PHD?
A: High-production masonry or restoration crews, rental yards aiming to minimize service, and any contractor seeking top durability, fast cleanup, and large-batch output.

Conclusion

The WM120PHD Whiteman Polyethylene-Drum Plaster/Mortar Mixer defines high-capacity, low-maintenance productivity for serious contractors. With its EasyClean poly drum, advanced hydraulic system, and a proven Honda GX390 engine, it outperforms traditional mixers in batch size, durability, operator safety, and total project value—making it the first choice for big jobs, rental fleets, and modern masonry pros everywhere.