QST1800 Block Making Machine: 1,400 mm Pallets at 104 kW
11 October 2026 · 6 min read
Quick answer
The QST1800 is built around pallet area, not around headline speed. The frame weighs 34 t and draws 104 kW of installed power, and each cycle lays a full pallet of product, so shift output is set by the block height and cavity count you actually sell. Choose it for hollow blocks and dense pavers; the QST1500 at 69.1 kW and 20 t is enough for standard brick and paver lines.
Picking a QST1800 block making machine is a decision about pallet area, not about headline speed. The machine stands 15,500 x 5,500 x 3,200 mm and weighs 34 t. It runs a 1,400 x 1,400 x 30 mm pallet at 104 kW of installed power, 280 kN of vibration force and 31.5 MPa of hydraulic pressure. Those numbers decide what you can pour, cure and ship in one shift. This guide walks through the output, the pallet math and the site work the machine demands.
1. What the QST1800 block making machine is built around
The QST1800 block making machine is a vibration plus press machine. A mould fills, a tamper presses, vibration settles the mix, and the pallet drops. Our engineers built the whole frame around one 1,400 x 1,400 x 30 mm pallet, so every cycle carries 1.96 m2 of product. The body weighs 34 t and draws 104 kW, with 280 kN of vibration force at 31.5 MPa of hydraulic pressure.
The 34 t frame is not decoration. A heavy frame holds the tamper and the mould box steady while 280 kN of vibration runs under them. Less flex means less product variation across the pallet. The machine occupies 15,500 x 5,500 x 3,200 mm, so plan the bay before the crate arrives.
2. Shift output for four products at a 15 to 25 second cycle
Output follows product height and the 15 to 25 second cycle. In an eight hour shift the QST1800 block making machine makes 165,000 to 220,000 standard bricks of 240 x 115 x 51 mm. On a taller 240 x 115 x 90 mm brick the same shift gives 81,000 to 108,000 pieces. Dutch pavers of 200 x 100 x 60 mm run 99,000 to 132,000. Hollow blocks of 390 x 190 x 190 mm run 27,000 to 36,000.
Two things move those figures: how many pieces fit the pallet and how fast the cycle closes. A 390 x 190 x 190 mm block is four times the volume of a 240 x 115 x 51 mm brick, so the count falls and the mix demand rises. Keep the cycle steady and the counts hold.
Run the numbers against your own product mix. A plant that sells mostly 390 x 190 x 190 mm hollow blocks is counting 27,000 to 36,000 pieces a shift, not brick counts. Match the pallet and the cycle to the product you actually invoice.
3. The pallet math: 1.96 m2 against 1.5525 m2
Pallet area sets the ceiling. A 1,400 x 1,400 mm pallet is 1.96 m2. The 1,350 x 1,150 mm pallet used on the QST1500 is 1.5525 m2. At the same cycle time the larger pallet lays about 26 percent more product area per mould. That gap repeats every cycle, all shift, all year.
The bigger pallet also pushes weight back onto the site. More product per mould means heavier pallets and a longer curing run. Plan stronger floor slabs, wider aisles for the stacker and more curing space than a 1,350 mm machine needs.
4. QST1800 or QST1500: which power and force fit your plant
The QST1500 is not a weak machine. It runs 69.1 kW, weighs 20 t and delivers 220 kN on a 1,350 x 1,150 mm pallet. The QST1800 pushes to 104 kW, 34 t and 280 kN. The extra force suits tall hollow blocks and dense pavers where the mix needs more energy to fill a deep mould.
Choose the 1500 when your product is standard brick or pavers and your floor, power supply and curing yard are already sized. Choose the 1800 when you sell hollow blocks of 390 x 190 x 190 mm or want the pallet area to carry four products off one line.
There is no rule that says bigger is better. A 220 kN machine on a 1,350 mm pallet has run standard brick lines for years. The question is your floor capacity, your curing area and the blocks you sell, not the number on the frame.
5. Servo closed loop and hydraulics on a 15 to 25 second rhythm
Every 15 to 25 seconds the machine completes a fill, a press, a vibrate and a release. That is well over a hundred cycles an hour. The QST1800 uses a servo closed loop drive, imported proportional hydraulics and an imported PLC touchscreen with fault alarms. The loop keeps the tamper depth and the vibration steady as the mix changes.
Fault alarms matter more on a fast machine. When a cycle trips, the screen names the fault, so an operator fixes it in minutes instead of guessing. On a machine that never stops, that short stop is the whole margin.
6. Before the machine lands: power, foundation, moulds, training
Site work decides whether the machine ever hits its rated cycle. Order it in this sequence: power, slab, curing yard, moulds, then training.
Send us your voltage, destination, unloading conditions and raw material samples. Our engineers use them to size the power feed, the slab and the first mould set, so the machine starts on your own product instead of a demo block.
- Power: confirm your supply can carry 104 kW of installed load and the start current of the motors, which can reach five to seven times the rated current, before you place the order.
- Foundation: the machine weighs 34 t and stands 15,500 x 5,500 x 3,200 mm, so give the slab the room and the stiffness it needs.
- Moulds: order the moulds for the products you really sell first, then fill the gaps later.
- Training: bring your operators through a full shift on the touchscreen, the fault alarms, mould changes and pallet handling.
Frequently asked questions
How much does a QST1800 block making machine produce per shift?
In an eight hour shift the machine makes 165,000 to 220,000 standard bricks of 240 x 115 x 51 mm, or 81,000 to 108,000 bricks of 240 x 115 x 90 mm. Dutch pavers of 200 x 100 x 60 mm run 99,000 to 132,000, and hollow blocks of 390 x 190 x 190 mm run 27,000 to 36,000. Product height and the 15 to 25 second cycle set the count.
Which products can a QST1800 block making machine run?
The machine runs four product groups from one 1,400 x 1,400 mm pallet: standard bricks, taller bricks, Dutch pavers and hollow blocks. You change the mould to change the product, and the pallet carries 1.96 square metres of product each cycle. Mix design, curing and the mould you order decide which of the four you sell at volume.
Why does pallet area matter more than cycle time?
Cycle time is capped near 15 to 25 seconds on both machines, so the real difference is how much product each cycle lays. A 1,400 x 1,400 mm pallet is 1.96 square metres and a 1,350 x 1,150 mm pallet is 1.5525 square metres. At the same rhythm the larger pallet lays about 26 percent more product area per mould, every cycle, all shift.
When is a QST1500 block making machine enough instead?
The QST1500 is enough when you sell standard bricks or pavers and your foundation, power supply and curing yard are already sized for it. It runs 69.1 kW, weighs 20 t and gives 220 kN on a 1,350 x 1,150 mm pallet. Move up to the QST1800 when hollow blocks or more pallet area justify 104 kW, 34 t and 280 kN.
What power supply and foundation does a QST1800 block making machine need?
Plan for 104 kW of installed load and the start current of the motors, which can reach five to seven times their rated current. The machine weighs 34 t and occupies 15,500 x 5,500 x 3,200 mm, so the slab needs both room and stiffness. Send us your supply details and floor plan and our engineers confirm the site work.
Does the QST1800 block making machine come with operator training?
Yes. Training covers a full shift on the PLC touchscreen, the fault alarms, mould changes and pallet handling. Because the machine cycles every 15 to 25 seconds, operators learn to read a fault and clear it fast. Our engineers also walk through the power supply, foundation and curing layout before the machine runs.
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