Description
Mould-matched capacity planning — Every QT8-15 configuration starts from the buyer’s actual block format and local aggregate, not a catalogue default, so daily output figures reflect what your plant will actually produce.
Technical Specifications
| Parameter | Value |
|---|---|
| Model | QT8-15 |
| Product Type | Hydraulic Block Making Machine |
| Overall Dimensions (L×W×H) | 8300×1860×3000 mm |
| Rated Pressure | 21 MPa |
| Main Vibration Form | Platform Vibration |
| Vibration Frequency | 2800–4500 r/min |
| Vibration Force | 45 kN |
| Pallet Size | 950×900 mm |
| Molding Cycle | 15–20 s (basis to be confirmed by block format and material) |
| Overall Power | 55.5 kW |
| Demolding Method | Hydraulic |
| Total Mass | 8 T |
| Factory Area Requirement | 300 m² |
| Applied Products | Hollow blocks, solid blocks, pavers, interlocking blocks, kerbstone, colored pavers |
| Raw Materials | Crushed stone, sand, cement, fly ash, gravel, slag, dust |
| Warranty | 1 year (without spare parts) |
Application Suitability
| Application | Material or Output |
|---|---|
| Hollow block production for residential and commercial walls | Crushed stone, sand, cement and fly ash mixes |
| Paving block manufacturing for roads and walkways | High-density aggregate blends with cement binder |
| Interlocking brick production for landscape and retaining walls | Gravel, sand and cement with pigment for colored variants |
| Kerbstone and curb production for municipal infrastructure | Coarse aggregate and cement under high hydraulic pressure |
| Solid block manufacturing for load-bearing structures | Dense crushed stone and cement at extended vibration cycles |
Why "Cycles per Hour" Tells You Almost Nothing About Real Output
A machine’s cycle time means nothing until you attach it to a specific block format and mould.
Sellers often quote the QT8-15 block making machine specifications with a single throughput number — something like "X cycles per hour" — without stating which block format that figure assumes. A 400×200×200 mm hollow block and a 200×100×60 mm paver occupy very different areas on the same 950×900 mm pallet, and they require different vibration durations and hydraulic pressure profiles. I once saw a Middle East project nearly reject a machine at commissioning because the signed contract listed capacity based on one format while the plant actually ran three different products daily, each with its own cycle time and pallet coverage. The real daily output fell noticeably short of what the buyer had planned for. [NEED_CITE: block format impact on pallet coverage and daily throughput]
Matching the Mould to the Block Your Market Actually Sells
The QT8-15 block making machine specifications cover a wide product range, but the machine only delivers on that range if the moulds are selected against your actual sales mix. A plant producing mostly 400×200×200 mm hollow blocks needs a different mould set and pallet utilization plan than one focused on paving blocks for municipal contracts. We work through your product list before confirming the mould configuration, including custom mould design where your market demands formats outside the standard catalogue.
Pallet Size as the Hidden Constraint on Your Curing Area
The 950×900 mm pallet is the physical link between the press and your curing system. If your existing curing racks, forklifts or stacking area were sized around a different pallet dimension, integrating this machine means adapting those downstream systems. Confirming pallet compatibility before production avoids costly curing area modifications after the machine arrives. Buyers upgrading from a smaller press sometimes overlook that a larger pallet also means heavier loaded pallets, which changes forklift capacity requirements. [NEED_CITE: pallet and curing area integration in block plants]
Reading the Specifications Against Your Mix Design
The 21 MPa rated hydraulic pressure combined with 45 kN vibration force at 2800–4500 r/min determines how densely the QT8-15 compacts your specific raw material mix. High-clay aggregates or locally sourced sand with elevated fines content absorb vibration energy differently than clean crushed stone, which shifts the effective molding cycle and influences block strength. Rather than adjusting your material sourcing to fit a default machine setting, we configure the vibration frequency range and hydraulic pressure profile to your actual aggregate test report. The 55.5 kW overall power supports sustained operation across the full vibration and hydraulic load, but the cycle time you achieve in practice depends on how well the mix design has been matched to the machine’s compaction capability. The 300 m² factory area requirement covers the press, mixer, pallet circulation and basic stacking — buyers planning a complete line need to account for curing yard space beyond this footprint.
The Cost of Skipping the Format Conversation Before You Order
When a buyer signs off on a machine without confirming which block formats the capacity figures assume, the consequences show up on the first production day. Output targets are missed because the quoted cycle time applied to a format the plant does not primarily produce. Mould changes that should take minutes stretch into longer periods because the tooling was not specified for quick exchange. Pallets arrive in a size that does not match the curing racks already welded in place, forcing the plant to rebuild its handling system. [NEED_CITE: commissioning delays from unconfirmed pallet and mould specifications] These are not machine defects — they are specification gaps that could have been closed during the quotation stage.
Why Buyers Come Back for the Second Line
We specify the QT8-15 as a matched system — press, mould, pallet and handling — rather than treating the machine as a standalone item. Every configuration is set against the buyer’s actual mix design and local aggregate report, not pulled from a default settings table. Mould design covers the formats the buyer’s market actually sells, with custom drawings where standard moulds do not fit. Automation level is selectable, so a plant can start with semi-automatic pallet handling and add automatic stacking later as volume grows. Installation support includes operator training at the plant, and the wear parts list is provided at quotation stage so the first replacement is on hand when it is needed.
Documentation & Verification
- Machine specification sheet with per-format cycle time and pallet coverage breakdown
- Mould drawing and format list confirmed before production starts
- Factory test record run on your target block format and mix proportions
- Voltage, frequency and PLC display language confirmation matched to destination country
- Wear parts and mould list issued at quotation stage for advance procurement
- CE declaration provided where applicable to destination market requirements
Installation, Commissioning & Support
- Foundation plan based on the 8300×1860 mm footprint and 8 T operating mass
- Power connection confirmed for 55.5 kW load with dedicated circuit at your local voltage
- Equipment shipped in one 40HQ container with dismantling and reassembly guidance
- On-site commissioning with vibration frequency and hydraulic pressure set to your mix
- Operator training covering mould change procedure and daily maintenance checkpoints
- Spare parts supply with wear parts list matched to your production volume
Preparing Your Inquiry for an Accurate Configuration
To size the QT8-15 correctly, we need to know the block formats your market sells and the daily volume you plan for each. Share your local aggregate test report or material description, the pallet dimensions your current curing area accommodates, and your site’s voltage and frequency. If you are integrating this press into an existing line, let us know the upstream mixer capacity and downstream stacking method so the cycle times can be balanced across the whole system.
Frequently Asked Questions
Q: How is realistic daily output calculated for the QT8-15, and which block format is assumed?
A: Output is calculated by taking the molding cycle for your specific block format — which varies between hollow blocks, pavers and kerbstones — and multiplying by the number of blocks per pallet and available production hours. We state the assumed format and pallet coverage alongside every capacity figure so you can verify the math against your own shift plan.
Q: What pallet size does the QT8-15 use, and how should it match my curing area?
A: The QT8-15 uses a 950×900 mm pallet. Before ordering, we cross-check this against your curing rack spacing, forklift fork width and stacking area dimensions. If your existing infrastructure was built around a different pallet size, we discuss the adaptation options before confirming the machine configuration.
Q: Can the machine be configured for my local aggregate and mix design?
A: Yes. We request an aggregate report or sample description before finalizing the vibration frequency range and hydraulic pressure settings. This ensures the machine compacts your actual material to the required block strength without forcing you to change your material sourcing to fit a default machine setting.
Q: What voltage, frequency and PLC language options are available before shipment?
A: Voltage and frequency are confirmed against your destination country’s electrical standards during the quotation stage, and the PLC display language is set to match your operators. This confirmation is documented before production begins to prevent commissioning delays when the machine arrives on site.
