Description
Block machinery as a single focus — machine, mould and handling are specified together against your actual mix design, not pulled from a catalogue default.
Technical Specifications
| Parameter | Value |
|---|---|
| Model | QMR 4-45 |
| Product Type | Mobile Clay Interlocking Brick Machine |
| Power Source | Diesel engine or electric motor (dual option) |
| Pallet Requirement | No pallet required (egg-laying / mobile type) |
| Concrete Floor Requirement | No concrete floor required |
| Mould Format Options | Hollow brick 400×200×200 mm / 400×150×200 mm / 400×100×200 mm |
| Cycle Time | 30–45 s per mould |
| Output Capacity | 320 pcs/h (basis: 400×200×200 mm hollow brick, 4 pcs/mould) |
| Output Capacity | 400 pcs/h (basis: 400×150×200 mm hollow brick, 5 pcs/mould) |
| Output Capacity | 560 pcs/h (basis: 400×100×200 mm hollow brick, 7 pcs/mould) |
| Output per 8-hour Shift | 2,600 pcs (400×200×200 mm) / 3,200 pcs (400×150×200 mm) / 4,480 pcs (400×100×200 mm) |
| Forming Method | Hydraulic pressure (diesel-driven) |
| Automation Level | Manual / semi-manual operation |
| Suitable Site Condition | Areas with insufficient or unreliable electricity supply |
| Mould Change | Interchangeable moulds for different block specifications |
| Key Features | No pallet, no concrete floor, dual power option, mobile egg-laying design |
Application Suitability
| Application | Material or Output |
|---|---|
| On-site block production for construction contractors | Crushed stone, river sand, cement — no fixed plant needed |
| Rural or remote project sites without reliable grid | Diesel engine option for off-grid hollow block forming |
| Interlocking brick and hollow block for local supply | Clay, laterite and cement mixes in interchangeable mould formats |
| Small-scale first block plant for entrepreneurs | Low-investment start with no pallet inventory required |
| Housing and development projects producing locally | Mobile production directly on the building site |
What "320 Pieces per Hour" Actually Means for Your Daily Output
Quoted capacity only holds when the block format, cycle time and mould loading match the assumption behind the number.
When I first started commissioning mobile block machines across East Africa, I watched contractors plan entire housing schedules around a single capacity figure from the brochure. The machine arrived, the crew started production, and the daily count landed well below what the project timeline required. The gap was not a machine fault — it was a mismatch between the quoted block format and the format the local market actually buys. The QMR 4-45 mobile clay interlocking brick machine specifications solve this by stating output against each mould size separately, so you can plan against the product you will actually sell [NEED_CITE: capacity calculation methodology for mobile block machines].
Matching Capacity to the Block Format Your Market Demands
The QMR 4-45 produces 320 pcs/h when running the 400×200×200 mm hollow brick mould at four pieces per cycle. Switch to the 400×150×200 mm mould and throughput rises to 400 pcs/h because five blocks drop per cycle. The smallest format, 400×100×200 mm, yields 560 pcs/h at seven pieces per mould. Each figure assumes a 30–45 second cycle and consistent material feeding by the crew.
Why Dual Power Matters Beyond the Brochure Line
Remote construction sites and rural housing projects frequently lack three-phase grid supply. The diesel engine option lets the QMR 4-45 run independently of the local electrical network, which removes the single biggest commissioning delay I have seen on off-grid projects. Where grid power is available and stable, the electric motor option cuts fuel cost and noise. Voltage and frequency must be confirmed against site supply before the machine leaves the factory — a detail that is easy to overlook when the focus stays on capacity alone [NEED_CITE: voltage and frequency standards by export market].
Reading the Specs That Determine Block Strength
Hydraulic pressure and cycle time together decide whether the finished block meets the compressive strength your local building code requires. On the QMR 4-45, hydraulic pressure is diesel-driven, meaning the forming force stays constant regardless of grid fluctuations. The 30–45 second cycle gives the mix enough dwell time under pressure to consolidate, but only if the aggregate gradation and cement ratio suit the mould cavity volume. A mix that is too dry will produce weak corners; a mix that is too wet will stick to the mould walls and slow the cycle beyond the stated range.
The Cost of Skipping the Soil Sample
I once saw a contractor in Kenya order a full set of moulds based on a sample capacity sheet, only to discover the local red laterite had a sand fraction far higher than assumed. The blocks cracked during curing, the cycle time stretched, and the project fell behind schedule before the first wall went up. Ordering the machine without confirming how your local aggregate behaves inside the mould cavity means you are betting the project timeline on someone else’s test mix [NEED_CITE: aggregate testing standards for concrete block production].
Why Source Everything from One Block Machinery Supplier
Configuration is set against your actual mix design, local aggregate and target block format rather than a generic catalogue default. Mould design covers the formats your market sells, with custom drawings available when standard sizes do not match local demand. Pallet and handling requirements are evaluated as part of the line even though the QMR 4-45 itself needs neither, so you are not caught by a downstream bottleneck. Automation level is selectable, meaning a buyer can begin with semi-manual operation and add pallet handling later. Installation support includes operator training so the crew understands cycle timing from day one.
Documentation & Verification
- Capacity calculation document stating the block format assumed for each output figure
- Mould drawing and format list confirming included and optional block sizes
- Voltage and frequency confirmation sheet for the electric motor option before dispatch
- Machine specification sheet with hydraulic pressure rating stated for your mix verification
- Operation and maintenance manual covering cycle timing, mould change and daily checks
Installation, Commissioning & Support
- Levelled ground preparation with no concrete slab required, reducing site mobilisation time
- Diesel engine commissioning and fuel system bleed completed before first production run
- Electric motor wiring matched to confirmed site voltage and frequency at the factory
- Mould change procedure demonstrated with the tools included in the shipment
- Operator training on cycle timing, mix consistency and daily hydraulic pressure checks
- Wear parts list supplied with reorder intervals matched to your production volume
What We Need From You to Size This Machine Correctly
Tell us which block format your local market sells most, the daily volume your project requires, and whether your site has reliable three-phase power or needs the diesel option. Share a soil or aggregate sample description so we can confirm the mix will consolidate properly inside the mould cavity. If you already have a curing area laid out, let us know its dimensions so we can plan block spacing around the egg-laying pattern.
Frequently Asked Questions
Q: How is the QMR 4-45 capacity calculated per block format, and what does the cycle time mean for my daily output?
A: Each output figure is tied to a specific mould — 320 pcs/h for 400×200×200 mm, 400 pcs/h for 400×150×200 mm, and 560 pcs/h for 400×100×200 mm, all assuming a 30–45 second cycle. Your actual shift total depends on crew feeding speed and mould change frequency.
Q: Which block formats does my local market sell, and how do I select the right mould set?
A: Start by surveying the block sizes used in nearby construction projects. Order moulds for those formats first, then add others as demand grows. The QMR 4-45 accepts interchangeable moulds, so the machine itself does not need to change.
Q: Should I choose the diesel engine or electric motor option for my site?
A: If your site has stable three-phase power at a confirmed voltage, the electric motor reduces running cost. For remote or rural projects where grid supply is unreliable or absent, the diesel engine keeps production moving without generator dependency.
Q: What ground preparation is needed since the QMR 4-45 requires no concrete floor and no pallet?
A: The machine needs a levelled, compacted earth surface. Remove loose topsoil, grade the area, and compact with a plate compactor. Blocks are laid directly on the ground in an egg-laying pattern, so surface flatness affects block alignment.
Q: How long does a mould change take on the QMR 4-45, and what tools are required?
A: A trained operator can swap moulds using basic hand tools included with the machine. The exact time depends on familiarity with the bolt pattern. Plan the change during a natural break to avoid disrupting the crew’s feeding rhythm.
