Description
Stock and dispatch focus — Every QTJ4-25 block machine in stock we prepare for shipment leaves the yard with a confirmed container loading plan and an arrival estimate you can show your site foreman before the crate is sealed.
Technical Specifications
| Parameter | Value |
|---|---|
| Model | QTJ4-25 |
| Product Type | Semi-Automatic Concrete Block Making Machine |
| Overall Dimensions (L×W×H) | 3000×1800×2680 mm |
| Total Mass | 3.5 T |
| Overall Power | 16.58 kW |
| Vibration Force | 60 kN |
| Main Vibration Form | Platform Vibration |
| Vibration Frequency | 2800–4500 r/min |
| Pallet Size | 850×480 mm |
| Molding Cycle | 25 s |
| Demolding Method | Mechanical |
| Factory Area | 300 m² |
| Output Capacity | 4640 pcs/day (8 h) — based on 400×200×200 mm hollow block, 4 pcs/mould |
| Output Capacity | 11200 pcs/day (8 h) — based on 240×115×90 mm multi-cellular brick, 9 pcs/mould |
| Output Capacity | 26400 pcs/day (8 h) — based on 240×115×53 mm solid brick, 21 pcs/mould |
| Guide Column | Four guide columns, overlong guide design |
| Frame Material | National standard manganese steel |
| Surface Treatment | Chrome-plated |
| Warranty | 1 year for whole machine (excluding spare parts) |
| Automation Level | Semi-automatic |
| Raw Material | Crushed stone, sand, cement, dust, fly ash, gravel, slag |
Application Suitability
| Application | Material or Output |
|---|---|
| Hollow block production on building sites | Crushed stone, sand, cement, fly ash mix |
| Solid brick runs for masonry contractors | Sand, cement, stone dust, gravel blend |
| Interlocking paver manufacturing | Cement, fine aggregate, pigment for colored pavers |
| Curbstone production for road projects | Coarse aggregate, cement, slag composite |
| First-time block plant startups | Locally sourced sand, gravel, fly ash, and cement |
What the Lead Time Promise Actually Means When You Are Against a Deadline
A QTJ4-25 block machine in stock is only useful if the loading plan, voltage confirmation, and customs paperwork are settled before the container doors close.
I have watched contractors lose two weeks on a building site because a machine arrived with the wrong voltage tap and no one on the dock knew how to rewire it. The QTJ4-25 semi-automatic block machine ships from the Pearl River Delta with dispatch lead time confirmed at the inquiry stage, not guessed at after payment. Voltage, frequency, and control language are locked in before the machine leaves the floor [NEED_CITE: voltage and frequency standards by export market]. When a project deadline is already slipping, the gap between "ready to ship" and "actually loaded" is where most schedules break down.
Stock Availability and What Ships Immediately
The QTJ4-25 block machine in stock carries standard moulds for hollow blocks, solid bricks, and pavers, meaning the most common formats a contractor or first-time plant owner needs are ready to load without a custom engineering cycle. Dispatch timing is quoted against real yard inventory, not a production backlog.
Container Loading and Dismantling for Shipment
At 3000×1800×2680 mm and 3.5 tonnes, the QTJ4-25 requires a dismantling and loading plan that accounts for frame separation and mould crate placement inside the container. We confirm the loading arrangement and container type before dispatch so the arrival estimate holds once the vessel books. Every machine I handle leaves with packing photographs and a parts kit that includes the vibration bearings I once watched a site crew wait fourteen days to replace [NEED_CITE: typical port-to-site logistics for heavy machinery exports].
Vibration Force, Pallet Size, and the Numbers That Decide Your Site Layout
The 60 kN platform vibration at 2800–4500 r/min works with the upper mould vibration motor to compact the mix into consistent density across each cycle. The 850×480 mm pallet size is a fixed constraint — your curing racks, forklifts, and stacking area must accept that dimension before the machine arrives. At 300 m² minimum factory area, this is a compact footprint, but it still demands clear access for raw material feed on one side and wet-block pallet removal on the other. The four-column overlong guide design with chrome-plated surfaces resists distortion under continuous vibration cycles, which matters when the machine runs back-to-back shifts against a pour schedule.
When the Arrival Estimate Collapses
A machine that ships without confirmed voltage and frequency can sit unpowered on a site while an electrician sources a transformer. Pallet dimensions that do not match the curing racks already on the ground force a carpentry rebuild nobody budgeted for. Control panel language set to a default the operator cannot read turns commissioning into guesswork, and guesswork on a QTJ4-25 is how moulds get damaged on day one [NEED_CITE: commissioning delays caused by unconfirmed electrical specifications].
Why Buyers Working to a Deadline Source From This Desk
Block machinery is our single focus, so the QTJ4-25 is specified as a matched system — machine, mould, pallet, and handling — not assembled from separate suppliers. Stock models ship with standard moulds for the formats the market actually sells, reducing the wait for custom tooling. Configuration is checked against the buyer’s local aggregate and target block format before loading, not left as a catalogue default. Voltage and control language are confirmed in writing before the machine enters the container. Every dispatch includes a wear-parts kit because I learned on a dead QTJ4-25 in a remote yard that a missing vibration bearing costs more in downtime than the bearing itself.
Documentation & Verification
- Machine specification sheet with overall dimensions and total mass for site preparation planning
- Voltage and control language confirmation document signed off before dispatch
- Packing photographs showing crate condition and loading arrangement inside container
- Factory test record on your target block format before the machine ships
- Customs documentation support for destination country clearance procedures
- Wear parts and mould list included with the shipment paperwork package
Installation, Commissioning & Support
- 300 m² minimum factory area with level concrete base for the 3000×1800 mm frame footprint
- 16.58 kW total power demand requires dedicated circuit with confirmed voltage and frequency
- Dismantled for container loading and reassembled on-site with guide column alignment check
- First-run mould setting and 25-second cycle verification against your block format
- Operator training on mechanical demolding and manual pallet handling workflow
- Spare vibration bearings and hydraulic wear parts included in the dispatch kit
What We Need to Quote Your Dispatch Date
Tell us the block formats you run today and the daily volume your site demands. Share your local voltage and frequency so we can confirm the electrical configuration before the machine enters the yard. If you have existing pallets, curing racks, or a forklift with a known fork width, send those dimensions — the 850×480 mm pallet size needs to match what is already on the ground.
Frequently Asked Questions
Q: What QTJ4-25 models and moulds are currently in stock, and how fast can they ship?
A: Stock availability covers the QTJ4-25 semi-automatic machine with standard moulds for hollow blocks, solid bricks, and pavers. Dispatch lead time is confirmed at the inquiry stage based on real yard inventory, not a production queue. Container booking and loading arrangement are settled before you receive the arrival estimate.
Q: Is dismantling required to load the QTJ4-25 into a container?
A: At 3000×1800×2680 mm and 3.5 tonnes, the frame is separated for container loading. We provide a loading plan showing component placement and crate positions. Reassembly on-site covers guide column alignment, platform mounting, and mould fitting as part of the commissioning process.
Q: Can voltage and frequency be confirmed before the machine leaves the factory?
A: Yes. Voltage and frequency are confirmed in writing before dispatch to match your site electrical supply. This avoids the situation where a machine arrives with the wrong tap setting and sits idle while a transformer is sourced locally, which is a delay no contractor can afford.
Q: What is included in the shipment beyond the machine itself?
A: The shipment includes the QTJ4-25 machine, standard moulds for your confirmed block formats, and a wear-parts kit with spare vibration bearings. Pallets are specified separately based on your curing area and handling equipment. Packing photographs and customs documentation are provided for export clearance.
Q: What arrival estimate can you provide at the inquiry stage?
A: We quote an arrival estimate based on dispatch lead time, container transit to your destination port, and typical inland transport duration. The estimate is provided before commitment so you can align it with your project timeline. Customs documentation support is included to avoid clearance delays at the port of entry.
