Description
Standard models ready to ship — the QT4-15 sits on our factory floor with common moulds already matched, so dispatch timing is confirmed before you commit rather than guessed after payment.
Technical Specifications
| Parameter | Value |
|---|---|
| Model | QT4-15 |
| Product Type | Hydraulic Concrete Block Making Machine |
| Molding Cycle | 15-30 seconds per cycle |
| Pallet Size | 900 × 500 mm |
| Vibration Type | Platform vibration |
| Vibration Frequency | 50-70 Hz |
| Product Height Range | 50-220 mm |
| Overall Power | 24.5 kW |
| Demolding Method | Hydraulic |
| Control System | PLC controlled |
| Automation Level | Automatic (pallet feeding, material feeding, vibrating, demoulding) |
| Hydraulic System | Powered hydraulic with approach switch monitoring |
| Block Compressive Strength | More than 15 MPa |
| Mould Format Compatibility | Hollow block, paver brick, solid brick (by changing moulds) |
| Raw Material Compatibility | Fly ash, slag, gangue, sand, crushed stone, cement, water |
| Output — 400×200×200 mm Hollow Block | 900-1200 pcs/hour, 7200-9600 pcs/8hr (4 pcs/mould, 15-20s cycle) |
| Output — 400×150×200 mm Hollow Block | 1080-1440 pcs/hour, 8640-11520 pcs/8hr (5 pcs/mould, 15-20s cycle) |
| Output — 400×100×200 mm Hollow Block | 1440-1920 pcs/hour, 11520-15360 pcs/8hr (8 pcs/mould, 15-20s cycle) |
| Output — 200×100×60 mm Paver | 2880-3840 pcs/hour, 23040-30720 pcs/8hr (16 pcs/mould, 15-20s cycle) |
| Output — 240×115×53 mm Solid Brick | 5930-6720 pcs/hour, 47400-53700 pcs/8hr (28 pcs/mould, 15-20s cycle) |
| Voltage & Frequency | Configurable to site (verify before dispatch) |
| Overall Dimensions | (source value — verify against manufacturer catalog) |
| Net Weight | (source value — verify against manufacturer catalog) |
| Hydraulic Pressure | (source value — verify against manufacturer catalog) |
| Vibration Force | (source value — verify against manufacturer catalog) |
Application Suitability
| Application | Material or Output |
|---|---|
| Medium-scale hollow block plant | Fly ash, slag, sand and crushed stone with cement binder |
| On-site contractor block production | Local aggregate and cement for 400×200×200 mm or 400×150×200 mm hollow blocks |
| Paver brick manufacturing | Crushed stone and cement for 200×100×60 mm interlocking pavers |
| Solid brick production | Sand, gangue and cement for 240×115×53 mm standard bricks |
| Building material distributor stock model | Standard mould set covering hollow, paver and solid formats for quick resale or plant setup |
What "In Stock" Actually Means for the QT4-15 Block Machine
The QT4-15 block machine in stock leaves the factory within days, not weeks — but only if voltage, control language and pallet size are confirmed first.
I have watched buyers pay a deposit on a machine labelled "ready to ship" only to discover the PLC display was in a language their operators could not read, or the voltage did not match the local grid. The machine sat in a container while electrical panels were swapped — time lost on a project that was already running late. When you source a QT4-15 block machine in stock, the real question is not whether the frame is welded, but whether every configurable item has been locked to your site conditions before it is bolted to the container floor [NEED_CITE: voltage and frequency standards by export market].
Dispatch Lead Time and What Delays It
The QT4-15 block machine in stock typically means the main press frame, hydraulic station and PLC cabinet are assembled and tested on the floor. Standard moulds — hollow block, paver, solid brick — are also kept in inventory for this pallet size. What can still add days is the voltage confirmation: a 380V/50Hz machine built for one market cannot simply be rewired at the destination without replacing the motor and transformer. We confirm your site voltage and frequency, then run a final factory test before dismantling for container loading.
Container Loading and Dismantling for Shipment
The 900×500mm pallet format and the overall power of 24.5kW place the QT4-15 in a range that fits standard container loading without oversize freight. The hydraulic station is unbolted and packed separately to prevent line damage during transit. Moulds are crated with the press to keep the format set together. Before dispatch, you receive a written loading plan showing which components go in which container and how they are secured — so nothing arrives loose or missing when the container opens at your port [NEED_CITE: container loading practices for industrial block machinery].
How Hydraulic Pressure and Vibration Shape Block Density
On a stationary block machine like the QT4-15, compressive strength above 15 MPa depends on two forces working together: hydraulic pressure pushing the mould head down and platform vibration shaking the mix into every corner. If vibration frequency runs at the lower end of the 50-70 Hz range, the mix needs more cement to reach the same density. If the local aggregate is lighter — volcanic ash, for instance — the hydraulic pressure setting must be adjusted upward to compensate, otherwise blocks crack during curing. The PLC controls the cycle timing, but the operator must understand that changing aggregate means re-tuning the vibration and pressure balance, not just pressing start.
Pallet Size and Curing Area Compatibility
The 900×500mm pallet is the footprint your curing racks and forklift must accommodate. If your existing racks were built for a smaller pallet, the QT4-15 output will stack on the floor until new racks arrive — and floor curing slows the entire cycle because wet blocks cannot be moved. Before the machine ships, confirm that your forklift tines match the pallet width and that your curing area has enough rack positions to hold at least one full shift of production at the block format you plan to run most often.
The Cost of Skipping Pre-Shipment Voltage Confirmation
A QT4-15 that arrives with the wrong voltage sits idle while a local electrician sources a compatible motor — sometimes weeks in markets where industrial motors are imported. The PLC cabinet may also need a new transformer and contactor set, adding cost and delay that could have been avoided with a single email before the machine left the factory. This is the most common reason a "fast delivery" machine does not actually start producing on arrival [NEED_CITE: common commissioning delays in exported concrete block machinery].
Why Buyers Source the QT4-15 from This Facility
Block machinery is our single product focus, so the press, mould, pallet and handling equipment are specified as one matched system. Every QT4-15 that ships has been factory-tested with the buyer’s target block format, not a generic cycle — capacity numbers on the spec sheet come from actual runs. Standard moulds for hollow block, paver and solid brick are stocked alongside the machine, so format flexibility is real from day one. We confirm voltage, frequency and PLC display language in writing before production is finalized, eliminating the most frequent cause of post-arrival delay. Dispatch lead time and container loading details are quoted before the deposit, so your project timeline is planned around confirmed dates, not estimates.
Documentation & Verification
- Factory test record showing cycle time on your specified block format before the QT4-15 leaves the floor
- Hydraulic and electrical schematic matching the as-built voltage and frequency of your machine
- Mould drawing and format list confirming which standard moulds ship with your unit
- Pallet specification sheet with 900×500mm dimensions and load rating for your curing rack design
- Packing photographs taken during container loading so you can verify condition on arrival
- CE declaration and customs documentation support for your destination port
Installation, Commissioning & Support
- Foundation must support the QT4-15 vibration load and the 24.5kW power draw on a dedicated circuit
- Hydraulic station reconnects to the press frame with approach switch monitoring verified on first start
- PLC display language confirmed to match your operators before commissioning begins
- Mould change procedure demonstrated on site so your team can switch formats within one shift
- Standard wear parts list provided with the QT4-15 so first replacements are ordered before stock runs out
- Operator training covers vibration frequency adjustment when local aggregate density changes
Before You Request a Quote
To confirm stock status and dispatch timing for the QT4-15, share your target block format, daily output requirement and the aggregate available at your site. Let us know your local voltage, frequency and preferred PLC display language so the machine is configured before it ships. If you already have curing racks or a forklift on site, send the pallet dimensions they accept — the 900×500mm pallet must fit your existing setup. Finally, tell us your destination port so the arrival estimate can be included in the quotation alongside lead time.
Frequently Asked Questions
Q: Which QT4-15 configurations and moulds are currently in stock and ready to ship?
A: The standard QT4-15 with PLC control, hydraulic demoulding and 900×500mm pallets is available on the factory floor. Common moulds for 400×200×200mm hollow block, 200×100×60mm paver and 240×115×53mm solid brick are also stocked. Custom moulds or non-standard voltage configurations require a build cycle, so confirm your requirements before assuming all variants are ready to dispatch.
Q: What is the dispatch lead time and how is the machine packed for container loading?
A: A standard QT4-15 in stock can be dismantled and loaded within days once voltage, frequency and control language are confirmed. The hydraulic station is packed separately, and moulds are crated with the press. You receive a written loading plan before the container is sealed, so you know exactly which components are inside and how they are secured for transit.
Q: Can the arrival estimate be confirmed before placing the order?
A: Yes. Once your destination port is known, the quotation includes a shipping estimate based on current sailings from the nearest Chinese port. This estimate is provided before payment so you can plan your site preparation and curing rack layout around a realistic arrival window rather than an optimistic guess.
Q: Are voltage, frequency and control language confirmed before shipment or after arrival?
A: These are confirmed before the QT4-15 leaves the factory. Voltage and frequency must match your grid — swapping a motor or transformer at the destination causes delays that defeat the purpose of buying a stocked machine. The PLC display language is also set during the final factory test so your operators can read the interface from the first day of commissioning.
Q: What standard spare parts ship with the machine so first replacements are not delayed?
A: Each QT4-15 ships with a wear parts list covering hydraulic seals, approach switches and vibration motor components that typically require attention during the first production months. The exact spare parts package is confirmed in your quotation. This ensures you are not waiting for international shipping when the first replacement is due on site.
