IMER - STEP-UP 120 Pump - Step-Up 120 | 208V/60Hz, 7.5 HP, 3 Phase - 1106181
Pump or spray mortars, stuccos, grouts, restoration mortars, underlayments, fireproofing, waterproofings and many other materials. The 3 phase power gives you more horsepower to push material further and with more flow. Pump grouts with up to 3/8” aggregates.
IMER – STEP-UP 120 Pump – 208V/60Hz, 7.5 HP, 3 Phase – 1106181 is a heavy‑duty, towable rotor/stator pump designed to spray and pump high volumes of mortars, stuccos, grouts, restoration mortars, underlayments, fireproofing, waterproofing, and many other cementitious materials on demanding commercial jobsites. Powered by a 7.5 HP, 3‑phase electric motor and equipped with an IM25L eccentric screw pumping unit, it delivers high flow, long pumping distances, and the ability to handle grouts with aggregates up to 3/8 in.
Overview of the IMER STEP-UP 120 Pump 1106181
The IMER STEP-UP 120 Pump is part of IMER’s rotor/stator pump series and is built specifically as a multi‑purpose spray and grout pump for medium to large projects. The 1106181 configuration is the three‑phase version: 208–220V, 60 Hz, 7.5 HP, 3 phase, with a 2 HP integrated mixer and an optional electric compressor.
IMER highlights that three‑phase power gives the Step-Up 120 “more horsepower to push material further and with more flow,” making it suitable for grout with aggregates up to 3/8 in and pumping distances up to around 300 ft horizontally and 200 ft vertically (depending on material and hose size). The machine is towable yet compact, so it can be positioned close to the work area or used as part of a continuous mixing/pumping system with the matching pan mixer.
Key Specifications: IMER STEP-UP 120 Pump – 1106181
According to IMER USA and three‑phase spec sheets, the STEP-UP 120 Pump 1106181 has the following technical specifications:
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Model: STEP-UP 120, three‑phase
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Model number: 1106181
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Power: 220–208V, 60 Hz, 3 phase
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Pump motor power rate: 7.5 HP, 2‑speed, 100% duty cycle
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Mixer motor power rate: 2 HP vertical shaft mixer (pan mixer), 1.5–2 HP depending on spec.
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Electric compressor (optional package): 3 HP / 11 cfm for spray applications.
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Pumping unit: IM25L rotor/stator as standard, with optional L7–1.5 kit to handle 3/8 in concrete.
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Maximum aggregate size: 3/8 in.
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Maximum flow rate (with different stators/rotors):
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Horizontal pumping distance: up to 300 ft (depending on material and stator).
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Vertical pumping distance: up to 200 ft (depending on material and stator).
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Hopper capacity: 4.25 cu ft (31 gallons).
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Dimensions (W × L × H): approx. 33 in × 80 in × 38 in.
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Weight: approx. 616 lb.
This combination of 7.5 HP power, IM25L rotor/stator, and 4.25 cu ft hopper gives the IMER – STEP-UP 120 Pump 1106181 serious performance for professional pumping and spraying tasks.
Materials and Applications
IMER and distributors specify that the STEP-UP 120 Pump can pump or spray a wide range of pumpable materials:
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Traditional and pre‑blended mortars (cement/lime plasters, masonry mortars).
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Stucco and EIFS base coats and finishes.
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Grouts (including fill core grouts) with aggregates up to 3/8 in when properly screened.
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Restoration mortars and repair mortars.
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Underlayments and self‑leveling screeds (when mixed separately and poured into hopper).
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Fireproofing mortars and sprayed fire‑resistive materials.
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Waterproofing slurries and coatings suitable for rotor/stator pumps.
Using the IM25L pumping unit, the Step-Up 120 can satisfy most pumping and spraying needs for cementitious and gypsum‑based materials. With optional 60.12 or 2L6 stator/rotor kits, it can be tuned for higher flow or higher pressure applications such as shotcrete and self‑leveling screeds, as described in IMER’s Step 120/Step 120 A documentation.
Typical applications include:
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Pumping grout and mortar on multi‑story masonry projects.
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Spraying stucco and plasters on large façades.
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Pumping self‑leveling underlayments across large floor plates (when used in wet‑mix configuration).
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Fireproofing structural steel with high‑volume, continuous output.
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Pumping lightweight screeds and refractory mortars (wet only) in industrial settings.
Progressive Cavity Pumping System (Rotor / Stator)
The STEP-UP 120 uses IMER’s IM25L eccentric screw pump (rotor/stator) to deliver smooth, continuous flow.
Key features of this pumping system:
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Progressive cavity design: The steel rotor turning inside the elastomer stator creates sealed cavities that move material forward with minimal pulsation.
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High torque gearbox drive: The 7.5 HP, 2‑speed motor and heavy‑duty gearbox provide the torque needed to move thick mortars and grouts long distances and heights.
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Adjustable stator: The IM25L stator is adjustable, allowing the operator to fine‑tune pressure and compensate for wear.
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Compatibility with multiple stators/rotors: IM25L, 60.12, and 2L6 kits allow the pump to be optimized for different flows, pressures, and aggregate sizes.
This rotor/stator design makes the IMER – STEP-UP 120 Pump 1106181 suitable for both pumping and spraying applications with a wide variety of materials.
Integrated Mixer, Compressor, and Continuous System
The Step-Up 120 system is often used together with an IMER vertical shaft pan mixer (such as the Mix 120 or Step 120 mixer) and optional electric compressor.
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Integrated mixer: A 3.2 cu ft vertical shaft mixer can be mounted above or beside the pump hopper, dropping mixed material directly into the 4.25 cu ft hopper in a 1:1 ratio. This prevents overloading and ensures the pump never receives more material than it can handle.
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Electric compressor: The three‑phase configuration can be equipped with a 3 HP / 11 cfm electric compressor for spraying stucco, plasters, and fireproofing.
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Integrated power panel: The Step-Up 120’s power panel is designed to run the pump, mixer, and compressor together, creating a truly continuous mixing and spraying system from one power source.
This setup allows crews to continuously mix and pump, significantly increasing productivity compared to batch‑mixing and bucket‑carrying workflows.
Control Panel, Speeds, and Remote Operation
The STEP-UP 120 three‑phase model 1106181 includes a dedicated 2‑speed control panel optimized for pumping and spraying.
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On/Off switch.
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Current supply indicator light.
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Emergency stop button.
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Rotor/stator forward/reverse selector (to clear jams or change pumping direction).
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Fault indicator light.
Standard equipment also includes a 66 ft power cord and “remote control ready” wiring, so you can add a wired remote to start/stop the pump from the hose end or work area. This is particularly valuable when spraying or pumping long distances, reducing communication delays and improving safety.
Hopper, Grate, and Vibrating Screen
The IMER – STEP-UP 120 Pump 1106181 features a high‑capacity 4.25 cu ft hopper designed for premixed materials.
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Grate for premixed materials: Standard grate prevents large debris from entering the pump and provides a safer loading surface.
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Optional vibrating grate: Vibrating grid can be added to break up clumps, filter out oversized aggregate, and maintain consistent feed into the rotor/stator.
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Hopper geometry: Designed for easy cleaning and efficient flow towards the suction area of the pump.
The hopper height and configuration allow easy loading from standard wheelbarrows, mixers, and bagged material, especially when combined with IMER vertical shaft mixers.
Towable Chassis and Jobsite Mobility
Despite its 616 lb weight, the STEP-UP 120 three‑phase pump is designed as a towable unit for jobsite and yard mobility.
Key mobility features:
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Tow kit included: A dedicated tow bar and hitch allow the machine to be towed from site to site at appropriate speeds.
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Torsion bar axle (noted on related Step‑Up 120 pump/mixer combos) provides smoother towing and improved stability.
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Compact footprint: 33 in wide and 80 in long, making it relatively easy to position near the work area or on crowded sites.
For non‑towing applications, an optional non‑towing wheel kit is available so the unit can be moved around large facilities or indoor spaces without a trailer.
Safety, Noise, and Electrical Requirements
The STEP-UP 120 Pump 1106181 includes safety and performance features appropriate for large three‑phase pumps:
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Noise level: <79 dB(A), which is relatively low for a pump of this power and flow.
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100% duty cycle motor: The 7.5 HP three‑phase motor is rated for continuous operation, critical for long pumping runs.
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Electrical protection: Manuals for the Step/Step-Up 120 highlight protections against overload, phase loss, and motor overheating, plus procedures for dealing with material too dry, pump seizing, or power fluctuations.
Three‑phase 220–208V power is required, so the machine is most suitable for commercial and industrial sites where this supply is available.
Why Choose IMER – STEP-UP 120 Pump – 208V/60Hz, 7.5 HP, 3 Phase – 1106181?
IMER – STEP-UP 120 Pump – 208V/60Hz, 7.5 HP, 3 Phase – 1106181 is an excellent choice if you need a powerful, towable electric pump to spray or pump mortars, stuccos, grouts (up to 3/8 in aggregate), restoration mortars, underlayments, fireproofing, and waterproofings over long distances and heights. Its 7.5 HP three‑phase motor, IM25L rotor/stator system, 4.25 cu ft hopper, up to 2.75–6 cu yd/h flow (depending on stator/rotor), and 300 ft horizontal / 200 ft vertical pumping capabilities put it in a high‑performance class for professional contractors.
With a 2‑speed control panel, remote‑ready wiring, optional integrated mixer and compressor, tow kit, and robust rotor/stator gearbox, the Step-Up 120 three‑phase pump provides reliable, continuous output that can significantly increase jobsite productivity compared to manual methods or smaller pumps. For large stucco, fireproofing, mortar, grout, and underlayment projects where power, flow, and distance matter, the IMER STEP-UP 120 Pump 1106181 is a proven, professional‑grade solution.