IMER - MIX 120 PLUS (MORTARMAN) - Portable 4CF Vertical Shaft Mixer

IMER Mix 120 Plus Portable Vertical Shaft Mixer (1194304) is a highly efficient and versatile mixing solution designed for contractors. This portable mixer is perfect for a variety of materials, making it an essential tool for any construction site.

The IMER Mix 120 Plus features a robust 2 HP motor and operates on 110V power. Its vertical shaft design ensures thorough mixing of materials, from dry pack mortar to high-strength grouts. The mixer’s portability allows it to navigate narrow doors and confined spaces, making it ideal for limited access areas.

• Specifications and Dimensions
  • Drum capacity: 4.5 Cubic feet
  • Batch output: 3.0 Cubic feet
  • Drum diameter: 30 Inches
  • Maximum aggregate size: 3/8 inch
  • Paddle speed: 38 rpm
  • Electric motor power rate: 110V/60Hz, 2 HP
  • Electric current draw: 15 amps
  • Noise level in operator position: 70 dB(A)
  • Weight: 286 lbs
  • Dimensions (L/H/W): 33" / 50" / 30"

• Key Features and Benefits
  • Powerful 2 HP motor for efficient mixing
  • Portable design for easy transport
  • Vertical shaft paddles with forward and reverse
  • Adjustable legs for various discharge heights
  • Heavy-duty grate with bag splitter and safety interlock
  • Controlled discharge for precise material handling
  • Mixes a variety of materials including mortar, stucco, and grout

IMER – MIX 120 PLUS (MORTARMAN) – Portable 4CF Vertical Shaft Mixer is a heavy‑duty, jobsite‑ready paddle mixer engineered for fast, clean mixing of mortar, stucco, grout, dry pack, self‑levelers, plaster, thin‑set, and specialty mixes. With a 4.25 cu ft drum, 3 cu ft batch output, vertical shaft paddles, and a powerful 2 HP 110V motor, it can produce a full wheelbarrow of material every 2–3 minutes while remaining compact and easy to move.

What is the IMER MIX 120 PLUS (Mortarman) – Portable 4CF Vertical Shaft Mixer?

The IMER Mix 120 Plus (Mortarman 120 Plus) is a portable vertical shaft mixer designed to replace bulky tow‑behind mixers on many projects. Instead of a rotating drum, the Mix 120 Plus uses a fixed 4.25 cu ft drum and a vertical shaft with paddles that cut through the material, providing intense, uniform mixing even with stiff dry‑pack and high‑strength grouts.

IMER emphasizes that the Mix 120 Plus “can make a wheelbarrow of mortar, stucco, grout, or dry pack cement every 3 minutes” and that vertical shaft mixers deliver so much torque they can out‑produce a two‑bag towable mixer when making dry pack. Because the mixing action is neat and controlled, you can mix indoors without making a mess, and the unit easily rolls through standard doorways.

Key Specifications: Drum, Capacity, and Power

As a Portable 4CF Vertical Shaft Mixer, the MIX 120 PLUS is built for serious capacity and power in a relatively small footprint.

Core specs (Mortarman 120 Plus / Mix 120):

• Drum capacity: 4.25–4.5 cu ft (120 liters)

• Batch output: 3 cu ft (about 188 lbs of material)

• Drum diameter: 30 in

• Max aggregate size: 3/8 in

• Paddle speed: 38 RPM

• Motor: 2 HP, 110–120V, single phase

• Current draw: 15 amps

• Noise level: About 70 dB(A) at operator position

• Machine weight: Approx. 286 lb (310 lb crated)

• Dimensions (L × W × H): About 33" × 30" × 50"

This configuration makes the IMER – MIX 120 PLUS (MORTARMAN) – Portable 4CF Vertical Shaft Mixer powerful enough for 2–4 person crews while still running on standard 110V jobsite power.

Vertical Shaft Mixing Action and High Torque Gearbox

The Mix 120 Plus uses a vertical shaft mixing system with paddles that are “always in the mix, working hard.” The paddles sweep the entire drum interior, lifting, folding, and shearing material to eliminate dead spots and mix without entrapping excess air.

This design is driven by:

• A 2 HP 110V industrial motor.

• An enclosed, oil‑bath, high‑torque reduction gearbox.

• Gear‑driven paddles with forward and reverse functions.

Forward mode provides the main mixing action, while reverse lets you break up clumps or pull material back from the sides for a perfect blend, then switch back to forward to finish. The result is extremely thorough mixing of both wet and dry materials, including very stiff dry pack that smaller mixers struggle with.

Materials the MIX 120 PLUS Can Mix

IMER designed the Mortarman 120 Plus to handle a wide range of materials, far beyond basic mortar. According to IMER and major distributors, the mixer is ideal for:

• Mortar: Mason’s mortar, brick/block mortar, high‑strength grouts.

• Stucco and plaster: Base coats and finish coats.

• Dry pack / deck mud: For shower pans, floors, and sloped beds.

• Floor levelers and self‑leveling underlayments.

• Cement and concrete toppings (with 3/8 in aggregate max).

• Thin‑set, tile adhesives, and large‑format tile mortars.

• Specialty mixes: Resins, coatings, paints, insulation, vibration‑damping materials, precast and GFRC blends.

With its high torque and vertical paddles, the Mix 120 Plus is particularly favored for dry pack, mason’s mortar, and high‑strength grouts where consistent, well‑hydrated mix is critical.

Productivity: Output and Speed

As a Portable 4CF Vertical Shaft Mixer, the IMER Mix 120 Plus is focused on speed and throughput.

• Batch output: 3 cu ft per load.

• Typical cycle time: About 2–3 minutes per batch.

• Practical output: One full wheelbarrow of mortar, stucco, grout, or dry pack every 3 minutes.

Vertical shaft mixers deliver so much mixing torque that IMER states the Mix 120 Plus can out‑produce a 2‑bag towable mixer when making dry pack cement. For crews doing continuous block, stucco, or floor prep work, this can significantly boost productivity and reduce labor.

Portability and Jobsite Mobility

Despite its capacity, the Mix 120 Plus is designed as a true portable specialty mixer rather than a trailer‑only unit.

Portability features include:

• Wheelbarrow‑style pneumatic wheels on the rear for easy rolling across slabs and jobsite terrain.

• Additional “loading wheels” that allow the machine to be tipped and rolled into a van, pickup, or onto a ramp.

• Compact footprint (approx. 33" × 30") so it can roll through standard 36 in doors and operate indoors.

Because it runs on 110V, the Mix 120 Plus can be used on interior projects, high‑rises (with power and elevator access), and tight urban jobsites where tow‑behind mixers are impractical.

iDust Grate and Dust Control

Modern jobsites demand effective dust control, and the Mortarman 120 Plus addresses this with the IMER iDust grate.

• The iDust dust abatement grate covers the drum opening and includes bag splitters for easier loading.

• It is designed with ports to connect to a HEPA dry vacuum, pulling dust downward as you dump bags, instead of letting it escape into the air.

This feature helps reduce silica dust exposure, keeps the mixing area cleaner, and supports compliance with jobsite dust regulations, especially important when working indoors.

For specialized applications like fireproofing, an open grate option is available in some configurations (e.g., model 1194304 with open grate).

Discharge, Height, and Controlled Pouring

The Mix 120 Plus includes a controlled discharge system that makes it easy to direct mixed material into wheelbarrows, buckets, or mud pans.

• Adjustable legs (on some versions) provide different discharge heights to match common containers and wheelbarrow designs.

• The front discharge door and handle allow precise control so you can fill a wheelbarrow without spills and mess.

This controlled discharge is particularly useful indoors and on finished surfaces, where keeping the site clean matters.

Safety Features and Ergonomics

IMER designed the Mix 120 Plus with multiple safety and comfort features:

• Safety grate with built‑in bag splitters that stops the mixer when lifted, reducing risk of contact with paddles.

• Quiet operation at about 70 dB(A), much lower than many tow‑behind mixers.

• Simple control panel with on/off and reverse switch for mixing direction.

• Stable, low center of gravity to prevent tipping while mixing or moving.

These features help reduce operator fatigue and improve safety during long days of mixing on busy job sites.

Typical Applications and Trades

The IMER – MIX 120 PLUS (MORTARMAN) – Portable 4CF Vertical Shaft Mixer is widely used by:

• Masonry contractors: Mortar and grout for CMU, brick, and stone.

• Stucco and plaster crews: Base and finish coats, synthetic stuccos.

• Tile and stone installers: Dry pack, deck mud, large‑format thin‑set, self‑levelers.

• Decorative concrete and precast shops: GFRC face/backer coats, precast mixes, overlays.

• Flooring contractors: Self‑leveling underlayments and repair mortars.

Any crew that needs reliable, repeatable 3 cu ft batches of specialty material every few minutes can benefit from this mixer.

Maintenance, Durability, and Options

The Mix 120 Plus is built as a contractor‑duty machine with a welded steel frame, thick drum, and sealed oil‑bath gearbox for long life.

Maintenance highlights:

• Clean the drum and paddles immediately after use to prevent buildup (especially important with dry pack and epoxy).

• Inspect paddles, shaft, and gearbox periodically according to IMER’s product sheet.

• Use a 10‑gauge extension cord no longer than 50 ft to avoid voltage drop and motor issues, especially in cold weather.

Optional accessories include:

• Rubber paddle kit with wipers for mixing colored or expensive materials, reducing residue and simplifying cleanup.

• Open grate for fireproofing and other applications where maximum access is needed.

IMER and its dealer network provide manuals, parts, and technical support for the Mix 120 Plus, ensuring long‑term serviceability.

Why Choose IMER – MIX 120 PLUS (MORTARMAN) – Portable 4CF Vertical Shaft Mixer?

IMER – MIX 120 PLUS (MORTARMAN) – Portable 4CF Vertical Shaft Mixer is an outstanding choice if you want a high‑torque, 110V paddle mixer that can handle tough materials like dry pack, mortar, stucco, and high‑strength grouts faster and more cleanly than many tow‑behind mixers. Its 4.25 cu ft drum, 3 cu ft batch output, 2 HP motor with reverse, vertical paddles, iDust grate, and compact, roll‑through‑doorway design make it one of the most capable and versatile specialty mixers in its class.

For 2–4 person crews who need to mix anywhere—indoors, outdoors, on slabs, or inside buildings—the Mix 120 Plus delivers the speed, consistency, portability, and durability that professional contractors expect from a top‑tier vertical shaft mortar mixer.