30 yd/hr, Kubota WG-3800 85HP Gasoline Engine
Mayco LS300GK Concrete Pump
Filling a niche that has been neglected, the Mayco LS300GK Concrete Pump has the versatility to efficently place 2" line mixes (3/8" pea gravel, masonry grout, shotcrete), structural concrete containing up to 1.5" aggregate, as well as everything in-between. Equipped with 6" diameter concrete cylinders and utilizing a 24" stroke ensures that the LS300GK will smoothly pump even low slump concrete mix designs.
Mayco's balanced independent hydraulic circuit guarantees a smooth changeover throughout, reducing to a minimum the tiring pump surge and premature wear on placing components. The 'true reverse' feature allows for immediate reversal of the pump stroke at any point allowing you to avoid troublesome line blockages in both a timely and safe manner.
The powerful Kubota WG-3800 gasoline engine helps put meaningful working force behind the LS300G's 800 psi concrete delivery pressure so that you get true performance at distances rarely achieved by other concrete pumps in this class. The Mayco LS300GK Concrete Pump is the true value choice for contractors who need performance without breaking the bank.
- Concrete piston face pressure of 800 PSI (55 Bar)
- Concrete cylinder diameter is 6 inches (152 mm) with 24-inch stroke (609 mm)
- Powered by a Kubota 85HP (63.3 kW) gasoline engine naturally aspirated
- Designed for aggregate sized up to 1-1/2 inches (38 mm)
- True Reverse allows stroke change during any point in the pumping cycle
- Hard faced wear components for longer life
- Variable volume output (from the control panel) from 0-to-30 cubic yards (22.9 cubic meters) per hour
- Ideal for use with shotcrete, masonry block fill, slabs, footings, basements, & compaction grouting
- Innovative DCP (Digital Control Panel) solid state electronic control box with full diagnostic & performance monitoring
- Optional wireless radio remote has a range of 350 feet (106.6 meters)
- Optional rear hydraulic outriggers
- Optional air or electric vibrators for hopper screen
The LS300GK Concrete Pump by Mayco—Multiquip is expertly engineered for versatility, reliability, and small-pump performance that rivals much larger models. Designed to address a niche in the market for high-output, compact trailer-mounted units, the LS300GK is trusted by contractors nationwide for everything from residential slabs to challenging shotcrete and block fill jobs.
LS300GK Concrete Pump Overview
The LS300GK Concrete Pump combines robust construction and advanced technology, resulting in a concrete placement solution adept at handling virtually any wet-mix job. With its oversized 6-inch material cylinders and 24-inch stroke, the LS300GK is optimized for pumping low-slump concrete, masonry grout, pea gravel, shotcrete, and mixes with up to 1.5-inch aggregate—offering a remarkable range of application that makes it the only pump a crew may ever need.
Key Features and Benefits
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30-yard/hour maximum output: Variable-speed hydraulics allow operators to dial in output from 0–30 cubic yards (0–22.9m³) per hour, easily adapting to site and mix demands.
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800 PSI piston face pressure: Ensures reliable delivery over long horizontal (up to 1,000 feet) and vertical (up to 300 feet) distances, even with demanding mixes.
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Large 6"x24" concrete cylinders: Deliver smoother pumping action, longer component life, and greater efficiency with low-slump and harsh aggregate mixes.
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Heavy-duty, 10-cubic foot hopper: Quickly removable for fast maintenance, cleaning, and easy access to the pump’s internal wear components.
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85 HP Kubota (or Kohler) gasoline engine (model dependent): Liquid-cooled for long-haul performance, with fuel economy and durability exceeding light diesel-model competitors.
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Digital Control Panel (DCP): Solid-state, full-diagnostic panel displays output, diagnostics, and performance data at a glance—minimizing downtime and simplifying troubleshooting.
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True Reverse feature: Unique safety and productivity tool allowing the stroke to reverse instantly at any point, quickly clearing line blockages and minimizing costly jobsite delays.
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Hard-faced wear components: Designed for long service intervals and low overall maintenance cost, even when frequently working with abrasive or challenging mixes.
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Optional wireless remote: With up to 500-ft operational range, granting operators total pumping control from nearly anywhere on site.
Technical Specifications
| Feature | LS300GK Specification |
|---|---|
| Hopper Capacity | 10 cu. ft. (0.28 m³) |
| Cylinders | 6 in. (152mm) x 24 in. (609mm) stroke |
| Engine | 85 HP Kubota (WG3800) or Kohler gasoline |
| Max Output | 30 yd³/hr (22.9 m³/hr) |
| Max Pressure | 800 PSI (55 bar) |
| Max Aggregate | 1-1/2" (38mm) |
| Vertical Distance | 300 ft (91m) |
| Horizontal Distance | 1,000 ft (305m) |
| Pump Outlet | 5" (127mm) |
| Fuel Tank | 40 gal (151 L) |
| Hydraulic Oil | 58 gal (219 L) |
| Overall Length | 155–173 in (3,937–4,394mm) |
| Overall Width | 67–68 in (1,702–1,727mm) |
| Height | 54–70 in (1,372–1,778mm) |
| Weight | 3,855–4,860 lb (1,750–2,210 kg) |
| Remixer/Hopper Vib. | Optional rear hydro outriggers, air/electric vibrators |
| Remote Range | 500 ft (153m) wireless (optional) |
Application Focus
The LS300GK is suited for:
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Residential and light commercial slab pours
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Basement, retaining wall, and footing work
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Shotcrete for pools, slopes, tunnels, and repair
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Block fill and compaction grouting
By accepting up to 1.5" aggregate and tackling both pea gravel and structural concrete, this pump offers uncommon flexibility. Contractors gain the ability to use a single machine for diverse jobs—streamlining training, maintenance, and asset management.
Digital Controls & Operator Experience
The DCP (Digital Control Panel) offers operators real-time insights into machine performance, job data, and error codes, reducing setup and repair times. The True Reverse feature helps avoid time-consuming hose blockages, especially on large foundation, high-rise, or complex municipal jobs. Easy-access maintenance points and a removable hopper add to user convenience.
Durability & Cost-Saving Design
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Hard-faced wear parts and oversized internal passages withstand the rigors of daily placement, even with high-volume or abrasive mixes.
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Independent hydraulic circuits minimize component wear and support smooth changeover, eliminating the “pump surge” common in smaller or non-premium units.
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Removable 10 cu. ft. hopper boosts up-time by streamlining cleaning and component swaps.
Package Options and Operator Accessories
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Wireless remote control (500 ft): Gives operators freedom to control pump cycles and volume output without physically accessing the trailer.
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Hydraulic rear outriggers, vibrators: Improve site stability and material flow.
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Quick-disconnect lines and hoses: Allow for fast setup/breakdown and easy swapping for different line/aggregate sizes.
LS300GK vs. Competing Small-Trailer Pumps
| Feature | LS300GK | “Typical” Small-Trailer Pump |
|---|---|---|
| Max Output | 30 yd³/hr | 20–25 yd³/hr |
| Cylinder Size | 6"x24" | 5"x18"–24" |
| Max Pressure | 800 PSI | 400–700 PSI |
| Aggregate Size | 1.5" | 0.75"–1" |
| Engine | 85 HP (gas, liquid-cool) | 40–70 HP (gas/diesel) |
| True Reverse | Yes | Sometimes |
| Wireless Remote | Yes (optional) | Optional/Not available |
| Digital Panel | Yes | Rare |
| Hopper Removal | Tool-less, fast | Often bolted, slower |
Why Professionals Choose the LS300GK
The LS300GK Concrete Pump is a preferred solution for concrete crews who need top performance in a compact trailer, the power to handle tough mixes, minimized maintenance needs, and the convenience of digital controls and remote operation. Its class-leading pressure, engine reliability, and optional upgrades ensure strong ROI and consistent batching—on even the most demanding projects.