Whole-Line Balance — the QMR4-45 diesel mobile block making machine is specified together with its mixer and trolley so material feed, molding cycle, and block handling stay synchronized from the first shift.
Technical Specifications
| Parameter | Value |
|---|---|
| Model | QMR4-45 |
| Product Type | Diesel Mobile Block Making Machine |
| Power Source | Diesel |
| Engine Power | 8 hp |
| Molding Cycle | 45 s |
| Molding Form | Vibration and Pressure |
| Vibration Force | 60 kN |
| Total Weight | 800 kg |
| Overall Dimensions (L×W×H) | 2420 × 1320 × 1650 mm |
| Pallet Requirement | No pallet required (egg-laying type) |
| Block Formats | Hollow block, solid block, paver brick, concrete block, fly ash brick |
| Automation Level | Manual / mobile (egg-laying) |
| Supporting Equipment | JZC350 Diesel Concrete Mixer or JQ350 Diesel Concrete Mixer with Electric Generating Unit; Trolley |
| Voltage & Frequency | Basis not stated in source — confirm with supplier |
| Control System | Basis not stated in source — confirm with supplier |
| Output Capacity per Shift | Basis to be confirmed per block format and material |
Application Suitability
| Application | Material or Output |
|---|---|
| Housing project on-site block production | Hollow and solid concrete blocks from crushed stone, sand, and cement |
| Remote infrastructure site paver laying | Interlocking paver bricks from local aggregate and cement |
| Small-scale block entrepreneurship | Fly ash bricks and concrete blocks from fly ash, sand, and lime |
| Contractor-produced kerb and wall units | Solid blocks and kerbstones from gravel-cement mixes |
What "Blocks per Hour" Actually Means on a Mobile Site
Output figures are meaningless unless they name the block format, the mix, and the molding cycle behind the number.
Sellers often quote a mobile block machine production line at a peak cycle count without saying which block size that count assumes. On a real job site in West Africa, I watched a contractor lose nearly a full shift of output because the mixer could not feed the press fast enough — the press sat idle while workers waited for the next batch. The cycle was rated at 45 seconds, but the actual rhythm stretched past a minute and a half [NEED_CITE: typical on-site idle time caused by mismatched mixer output]. When daily tonnage falls short, the buyer blames the press, not the feed gap.
Matching Mixer Output to the 45-Second Molding Rhythm
The QMR4-45 completes one molding cycle every 45 seconds under vibration and pressure. If the mixer cannot deliver a fresh batch within that window, the press waits and the mobile block machine production line loses throughput it can never recover. Pairing the press with the JZC350 diesel mixer or the JQ350 mixer with a generator keeps material flowing at a pace the press can absorb, eliminating the dead seconds that silently erode daily output.
Moving the Press Across the Project Without Losing Setup Integrity
An egg-laying machine drops blocks directly onto the ground and walks forward, so the production area shifts as the site grows. The trolley included in the line lets the operator reposition the mixer and the press together, maintaining the feed distance and keeping the rhythm intact. On a sprawling housing development, this means crews produce blocks where they are laid rather than hauling cured units across unpaved ground [NEED_CITE: on-site block transport breakage rates in developing-market housing projects].
Vibration Force, Pressure, and the Density Question
The 60 kN vibration force works with mechanical pressure to compact the mix inside the mould. Higher vibration alone does not guarantee a stronger block — the force must be matched to the aggregate size and the cement ratio the buyer actually sources locally. A mix that is too dry or too coarse will not consolidate evenly at this vibration level, leaving weak edges. Confirming the local sieve analysis before choosing the mould ensures the QMR4-45 produces consistent density across hollow, solid, and paver formats.
The Cost of Skipping Line-Level Configuration
When the mixer, trolley, and press arrive from separate sellers, nobody owns the cycle-time match. The mixer may deliver a batch every two minutes while the press is ready every 45 seconds, and the gap becomes permanent lost capacity. Pallets, curing covers, and handling tools get left off the order because each supplier assumes the other included them [NEED_CITE: common mobile block line omissions in single-equipment quotations]. The contractor then discovers on day one that blocks must be stacked and cured by hand, adding labour the budget never planned for.
Why Source the Full Line Here
Block machinery is our single focus, so the QMR4-45, its diesel mixer, and the trolley are specified as one matched system rather than assembled from unrelated catalogues. Configuration is set against your actual mix design and local aggregate, not a generic default sheet. Mould design covers the block formats your market sells, and custom drawings are available when standard sizes do not fit. Automation level is selectable — you can begin with manual egg-laying operation and add pallet-based handling later as volume grows. Documentation and factory testing cover the press, mixer, and trolley together before anything leaves the workshop.
Documentation & Verification
- Line layout showing press, mixer, and trolley positions with feed distances
- Capacity calculation stating the block format assumed for output figures
- Mould drawing and format list covering hollow, solid, and paver sizes
- Hydraulic and electrical schematic for the diesel engine and vibration system
- Factory test record with all line components running together before dispatch
- Packing photographs verifying press, mixer, and trolley loaded in the container
Installation, Commissioning & Support
- Ground levelling guidance for the 2420 × 1320 mm machine footprint on compacted soil
- Diesel engine break-in procedure for the 8 hp unit before full-load molding
- Mixer-to-press feed distance setup to match the 45-second molding cycle
- Mould fitting instruction covering all ordered block formats on the vibration table
- Operator training on vibration time and feed volume adjustments per mix design
- Wear parts list for vibration springs, mould liners, and diesel engine consumables
What to Include in Your Inquiry
Send us the block formats your local market demands — hollow, solid, paver, or a combination — along with the daily volume you need to hit on site. Confirm the aggregate types and cement grades available in your area so we can match the mixer and mould settings to your real material. If you plan to use the JQ350 mixer with a generator, tell us your site voltage and frequency so the electric generating unit is wound correctly before shipment.
Frequently Asked Questions
Q: How is realistic daily output calculated per block format on the QMR4-45?
A: Daily output depends on the block format, the mix consistency, and how fast the operator can reposition the machine. The 45-second molding cycle is the baseline, but a 400 mm hollow block takes longer to fill and eject than a small paver. We provide a capacity sheet that states the assumed format and the mixer feed rate behind every output figure.
Q: What mixer configuration keeps the press from waiting between cycles?
A: The JZC350 diesel mixer or the JQ350 with a generator is sized to deliver a fresh batch within the 45-second cycle window. On sites where diesel is the only fuel, the JZC350 keeps both the mixer and the press running independently of grid power.
Q: Which block formats and moulds are available for the QMR4-45?
A: Standard moulds cover hollow blocks, solid blocks, paver bricks, and fly ash bricks. Custom moulds can be designed to buyer drawings for kerbstones, interlocking shapes, or non-standard dimensions. Mould change on site involves unbolting the mould box from the vibration table and fitting the replacement.
Q: What voltage does the generator option require for the JQ350 mixer?
A: Voltage and frequency must be confirmed before the generator is sourced, because winding specifications vary by country. We ask buyers to state their local standard so the generating unit matches existing site equipment and avoids commissioning delays.
Q: How are spare parts supplied for the diesel engine and vibration system?
A: A wear parts list ships with the machine covering vibration springs, mould liners, and engine consumables. Replacement parts for the diesel engine can typically be sourced through regional engine distributors, and mould wear items are available directly from our workshop.
