QMJ4-45 Mobile Block Machine for Hollow Block – ManufacturerQMJ4-45 Mobile Block Machine for Hollow Block – Manufacturer

Matched System Supply — The QMJ4-45 mobile block making machine for sale arrives with engine, mould and egg-laying mechanism specified together, eliminating the mismatch risk when buyers source the press and power plant from separate vendors.

Technical Specifications

Application Suitability

Why "Daily Output" Means Nothing Without the Block Format

A machine quote that states output without naming the assumed block format is an estimate, not a commitment.

The QMJ4-45 mobile block making machine for sale illustrates this clearly. The same unit produces approximately 3000 pieces of 400×200×200mm hollow blocks in an eight-hour shift, yet reaches approximately 4500 pieces when the mould switches to 400×120×200mm hollow blocks. The machine does not change — only the format does. Buyers who compare quotations based on a single headline number end up disappointed when their actual product mix delivers a fraction of the promised volume. [NEED_CITE: block format assumptions in capacity quotations]

Where the QMJ4-45 Fits in the Shiyue Mobile Range

The Shiyue mobile block machine range covers engine-driven egg-laying units for buyers who need production without a fixed plant or three-phase grid connection. The QMJ4-45 occupies the entry tier: manual demould, manual turning, no pallets required. This configuration suits contractors who pour blocks on a prepared ground slab adjacent to the build site and cure them in place. Buyers who need continuous pallet-based production or higher output should look at the semi-automatic stationary tier instead, where automatic pallet feeding and stacking become available.

Engine-Driven Operation Without Grid Power

The diesel or petrol engine power source removes the single largest site-preparation barrier for first-time block producers. No transformer installation, no three-phase cable trenching, no utility approval delays. The 6 kW total power requirement is modest enough for a standard industrial engine to sustain across a full shift. [NEED_CITE: engine-driven block machine deployment in off-grid construction sites] This matters for housing project contractors working on greenfield developments where the electrical grid has not yet reached the plot, and for entrepreneurs in regions where industrial power connections involve multi-month administrative processes.

Vibration, Cycle Time and Block Density

The 2400 r/min vibration frequency and 45-second molding cycle work together to compact the concrete mix within the mould cavity. Higher vibration frequency reduces the time needed to achieve target density, which directly affects block strength and the consistency of that strength across a production run. The twice-vibration molding core — an upgrade over single-stage vibration in this class — improves compaction at the block’s core, reducing the risk of weak centers that crumble during handling. The manual demould and turning sequence means the operator controls the pace, which is appropriate for the output tier but limits how tightly cycle time can be held.

Specification Choices That Affect Real Output

The pallet-free egg-laying design is the defining configuration of this mobile block making machine for sale. Blocks are laid directly on the ground surface, which eliminates pallet purchase cost, pallet storage space, and the labour of moving pallets through a curing circuit. The trade-off is ground preparation: the production surface must be level, firm and large enough to hold a full day’s output before blocks are moved to a stacking area. For the 400×200×200mm format at approximately 3000 pieces per day, the curing footprint is substantial. Buyers who underestimate this area end up with blocks stacked on uneven ground, producing dimensional variation and breakage. The mould change process is manual and requires the operator to unbolt, swap and re-seat the mould cavity — a task that takes a portion of a shift, not minutes, and should be factored into any production plan that runs multiple formats.

The Cost of Skipping the Mix Design Conversation

A mobile block machine configured for a mix the buyer cannot source locally forces a material change that was never part of the budget. High-clay manufactured sand behaves differently under vibration than clean river sand, and a mix that works in the seller’s factory test may produce crumbly blocks on the buyer’s site. The vibration frequency and cycle time were set against a specific aggregate profile; changing that profile without adjusting the mix proportion or water content shifts the block strength below the target. [NEED_CITE: aggregate variation effects on concrete block strength] Buyers who confirm their local aggregate source and send a sample before ordering avoid this failure mode entirely.

Why Source This Mobile Block Machine Here

Block machinery is the single focus at Shiyue, which means the QMJ4-45 arrives with mould, engine specification and egg-laying mechanism matched as one system rather than assembled from unrelated suppliers. The configuration is set against the buyer’s actual mix design and target block format, not pulled from a catalogue default. Mould design and supply covers the formats the buyer’s market actually sells, with custom drawings available when standard formats do not match local demand. The automation level is selectable across the broader Shiyue range, so a buyer who starts with this manual mobile unit can move to semi-automatic stationary equipment later without changing the supplier relationship. Installation guidance and operator training are included, which matters for first-time plant owners who have no experienced block production staff on site.

Documentation & Verification

• Factory test record run on buyer’s proposed block format and mix before dispatch
• Mould drawing and format list confirming available cavity sizes for the QMJ4-45
• Engine specification sheet with fuel consumption and service intervals
• Operation and maintenance manual covering mould change and vibration adjustment
• Packing photographs showing dismantling state for container loading

Installation, Commissioning & Support

• Level concrete slab or compacted ground surface required, sized to hold a full shift of egg-laid blocks
• Diesel or petrol engine fuel supply and daily service checklist reviewed before first run
• Mould cavity alignment checked after transport vibration before production starts
• Operator trained on 45-second cycle pacing, manual demould timing and turning sequence
• Wear parts list for mould liners and vibration components provided with recommended replacement intervals
• One-year warranty covering the complete machine including engine and vibration assembly

What to Include in Your Inquiry

Provide the block format you intend to produce most frequently, the daily output target for that specific format, and the local aggregate type available at your site. Confirm whether grid electricity exists at the project location or whether engine-driven operation is mandatory. If you already have curing area space allocated, share the dimensions so the layout can be verified against the egg-laying footprint.

Frequently Asked Questions

Q: How is the daily output figure calculated, and which block format does it assume?
A: The output figures for the QMJ4-45 are stated per block format: approximately 3000 pieces per eight-hour day for 400×200×200mm hollow blocks, approximately 3500 for 400×150×200mm, and approximately 4500 for 400×120×200mm. Each figure assumes a continuous 45-second molding cycle with no downtime for mould changes or material delays.

Q: Can this machine run on a diesel engine, and what fuel consumption should I plan for?
A: Yes, the QMJ4-45 is available with a diesel or petrol engine power source, making it suitable for sites without three-phase grid electricity. Fuel consumption depends on the engine model selected and the shift length. Request the engine specification sheet during inquiry to plan daily fuel logistics and on-site storage.

Q: Which mould formats are available, and how long does a change take?
A: Standard hollow block moulds in 400×200×200mm, 400×150×200mm and 400×120×200mm are available, along with paving block moulds where applicable. Mould change is manual and takes a portion of a shift, so production planning should group runs by format rather than switching daily.

Q: What site preparation is needed before the machine arrives?
A: The production surface must be level, firm and large enough to hold the day’s egg-laid output. Raw material storage should be positioned to minimize wheelbarrow distance to the hopper. A curing area separate from the production surface is needed for blocks that have set enough to be moved.

Q: How does this mobile machine compare to the next tier up in the Shiyue range?
A: The next tier is the semi-automatic stationary block machine, which uses pallets, offers automatic pallet feeding and higher output, but requires three-phase power and a fixed plant layout. The QMJ4-45 trades that capacity for zero pallet cost, zero grid dependency, and the ability to produce blocks directly at the construction site.