Description
Stocked Dispatch Advantage — QTJ4-25 units held in yard for immediate container loading, avoiding the standard production wait when your site deadline cannot slip.
Technical Specifications
| Parameter | Value |
|---|---|
| Model | QTJ4-25 |
| Product Type | Semi-Automatic Concrete Block Making Machine |
| Overall Dimensions | 3060×1730×2580 mm |
| Total Mass | 4 T |
| Rated Pressure | 16-21 MPa |
| Main Vibration Form | Platform Vibration |
| Vibration Frequency | 4200 r/min |
| Vibration Force | 45.5 kN |
| Pallet Size | 850×550 mm |
| Molding Cycle | 25-30 s (basis not stated in source) |
| Overall Power | 14.9 kW |
| Demolding Method | Vibration |
| Factory Area Required | 200 m² |
| Automation Level | Semi-automatic |
| Warranty | 1 year |
Application Suitability
| Application | Material or Output |
|---|---|
| Hollow block production for residential walls | Crushed stone, sand, cement, fly ash |
| Solid block manufacturing for load-bearing structures | Gravel, sand, cement blends |
| Paver and interlocking brick runs for landscaping | Colored concrete mixes, dust, slag |
| Curbstone forming for road and drainage projects | Heavy aggregate and cement ratios |
| On-site contractor block production | Locally sourced sand and gravel |
Why "25 Seconds per Cycle" Means Nothing Without the Block Format
A cycle time only matters when tied to the exact block you plan to sell.
When buyers see a molding cycle listed as 25-30 seconds, they multiply it into a daily output figure and plan their contracts around that number. The problem is that cycle assumes a specific block format, material mix, and thickness — none of which are stated in the base specification. A hollow block with thin walls cycles differently than a dense solid block or a thick interlocking paver. I have watched buyers in West Africa sign supply agreements based on a cycle time that was never validated against their actual product. The QTJ4-25 block machine in stock ships fast, but the conversation about what it will actually produce at your site must happen before the container is booked [NEED_CITE: block cycle time dependency on format and material].
What Ships With the Machine — And What Does Not
A semi-automatic press like this one handles the forming station: raw material is fed, the platform vibrates at 45.5 kN to compact the mix, and the block is demolded onto a pallet. What happens after that pallet leaves the press — moving it to the curing area, stacking the cured blocks, returning the empty pallet — is not part of the base QTJ4-25 configuration. Buyers who assume pallet handling and stacking are included end up assigning labor crews to move blocks by hand, which was never part of their cost plan. Confirming exactly which stations ship inside the container is the first thing we settle before any payment changes hands.
Container Loading and Dispatch Timing
The QTJ4-25 block machine in stock fits within a standard 40HQ container once dismantled for shipment. The 3060 mm frame length and 4-ton mass require specific bracing and load distribution inside the container, and the moulds are packed separately to prevent damage during ocean transit. Because these units are already assembled and factory-tested at our Linyi yard, the dispatch lead time is measured in days for loading rather than weeks for production. We provide packing photographs and a loading plan before the container is sealed, so you know exactly how the machine arrives at your port.
Reading the Vibration and Pressure Specs
The platform vibration system delivers 45.5 kN of force at 4200 r/min, while the hydraulic rated pressure sits between 16 and 21 MPa. In block forming, vibration frequency determines how thoroughly the mix settles into the mould corners, and hydraulic pressure determines the compaction density of the finished block. If your local aggregate is a heavy crushed stone rather than a fine sand, you need the upper end of both ranges to achieve adequate block strength. The 850×550 mm pallet size defines the maximum mould footprint — and must match the curing racks and forklift dimensions you already have on site, otherwise the pallets stack improperly or cannot be transported to the yard [NEED_CITE: vibration force and hydraulic pressure matching in concrete block production].
The Voltage Mismatch That Stops Commissioning Cold
Every destination country runs on a specific voltage and frequency standard, and a motor wound for the wrong supply will either trip immediately or burn out within the first production run. The QTJ4-25 block machine in stock must have voltage and frequency confirmed against your site supply before the electrical cabinet is finalized. A control panel display language that the local operators cannot read turns a simple parameter adjustment into a guessing game. These are not optional configuration details — they determine whether commissioning takes a day or a month [NEED_CITE: voltage and frequency standards by export market].
Why Source This Model Through Our Stock Program
Block machinery is our single focus, so the QTJ4-25 ships as a matched system — press, mould, and pallet specified together rather than assembled from separate suppliers. Stocked units mean your project deadline is not held hostage by a full production cycle at the factory. We confirm pallet size against your existing curing area and forklift before dispatch, preventing the mismatch that leaves blocks stacked by hand. Factory test records on your target block format are reviewed before the machine leaves our Linyi yard. Mould design for the formats your market actually sells — hollow, solid, paver, interlocking, or curbstone — is available from stock or built to your drawings.
Documentation & Verification
- Factory test record showing cycle performance on your target block format before dispatch
- Machine specification sheet with confirmed voltage, frequency, and control language
- Mould drawing and format list matching your local block market requirements
- Packing photographs documenting machine condition and container load plan
- Hydraulic and electrical schematic for on-site maintenance reference
Installation, Commissioning & Support
- 200 m² factory area required; confirm ground-bearing capacity for the 4-ton machine mass
- 14.9 kW total power demand; arrange dedicated circuit matching confirmed voltage and frequency
- Machine dismantled for container shipment; reassembly guidance provided with hydraulic schematic
- Commissioning includes vibration parameter adjustment to your local aggregate and mix design
- Operator training covers platform vibration controls, mould change procedure, and daily maintenance
Before You Request a Quote
To match the right stocked QTJ4-25 configuration to your project, we need to know which block format you intend to produce and what raw materials are available locally — particularly the aggregate type and whether fly ash or slag will be part of the mix. Your site voltage and frequency, along with the pallet handling and curing equipment you already have in place, determine what ships alongside the press. If you are working to a specific project deadline, share the target date so we can confirm whether current stock levels and shipping schedules align.
Frequently Asked Questions
Q: Is the QTJ4-25 currently in stock and what is the dispatch lead time?
A: Stocked units are held at our Linyi yard and available for immediate container loading once the configuration is confirmed. Dispatch lead time depends on how quickly voltage, frequency, mould format, and pallet specifications are finalized on your end. We provide a written dispatch estimate before payment so your project schedule is not based on assumptions.
Q: What is included in the shipping package with the base order?
A: The base QTJ4-25 package includes the press, hydraulic system, and platform vibration unit. Pallets, moulds, and stacking equipment must be confirmed separately based on your block format and site setup. We provide a detailed packing list so you know exactly what arrives in the container before it is sealed and dispatched.
Q: How is the machine dismantled and loaded for container shipment?
A: The QTJ4-25 is dismantled to fit within a 40HQ container, with the 3060 mm frame, hydraulic components, and moulds packed and braced separately. Packing photographs and a container loading plan are shared before departure. Reassembly references the included hydraulic and electrical schematics once the machine reaches your site.
Q: What arrival estimate can I expect after dispatch?
A: Ocean transit time depends entirely on your destination port and the shipping line schedule at the time of booking. We confirm the vessel departure date and estimated arrival window once the container is booked, giving you a timeline to plan site preparation and commissioning around.
Q: Can I add standard moulds from stock to match my local block formats?
A: Standard moulds for hollow block, solid block, paver, interlocking brick, and curbstone formats are available from stock and can ship in the same container as the QTJ4-25. If your market requires a format not in the standard range, custom moulds are built to your drawings. We confirm mould compatibility with the 850×550 mm pallet before dispatch.
