Second Hand or New Block Machine for Syria: Cost per Block Compared

Choosing between a second hand or new block machine for Syria comes down to one comparable number: the cost per 1,000 blocks. Purchase price is not that number. Four items build it: the machine cost spread over the blocks it can still produce, spare parts consumption, downtime loss when a machine stops mid shift, and the reject rate of what it presses. A machine that costs less today can cost more per 1,000 blocks if any one of those four runs against you.

Why is cost per 1,000 blocks the only fair comparison?

Two machines at the same price are not the same purchase. A QT4-15 weighs 6,200 kg and draws 22.9 kW installed power. A QST1800 weighs 34 t at 104 kW. Weight and power decide the foundation, the power connection and the spares list behind each machine.

Nameplate output is the other half of the division. Real output runs at 70% to 80% of the figure on the plate, and a two shift plant works roughly 500 shifts a year. Divide machine cost by the blocks that 70% figure produces, not by the plate figure.

The reject rate closes the arithmetic. A plant pressing 90,000 standard bricks in an 8 hour shift throws away cement, aggregate, labour and power with every reject. A used machine with a worn mould pushes that rate up, and the cost per 1,000 blocks rises although nothing else changed.

Which parts decide whether a used block machine is worth buying?

On a second hand machine the hydraulic system is what you are really buying. Our static presses run a main cylinder bore of Ø450 mm to Ø720 mm at 31.5 MPa maximum pressure, and the moulding machines hold 25 MPa to 31.5 MPa. Seals and the pump carry that pressure, and a worn pump shows up as a slow cycle before it shows up as a leak.

The vibration system is the second item. Exciter force across our moulding machines runs from 58 kN to 280 kN, and those motors and their bearings take a reversing load all day. Bearing play in a used unit shows up as blocks that do not come out square, not as a broken part.

Pallet and mould wear is the third. Pallet thickness is 20 mm, 22 mm, 25 mm or 30 mm depending on the model, from an 850 x 560 x 20 mm plate up to 1,400 x 1,400 x 30 mm, and a worn mould changes block dimensions. Aged electrical cabinets and sensors are the fourth, and whole machine weight from 6,200 kg to 34 t tells you which class of machine you are inspecting.

How do you inspect a used block machine before you pay?

Start with a no-load cycle test and a stopwatch. Our moulding machines are rated at 15 to 20 seconds for the QT series and 15 to 23 seconds for the QST series, the QSMT wet cut line runs 13 to 18 seconds, and the static presses run 20 to 25 seconds. If the empty cycle cannot reach its nameplate band, the hydraulic or vibration circuit is already worn.

Second, check the mould that is on the machine and the blocks it makes. A QS800 presses 5 hollow blocks of 390 x 190 x 190 mm per mould, a QS1000 presses 10 and a QS1500 presses 12, while a 200 x 100 x 60 mm paver mould gives 16 on a QS600 and 40 on a QS1500. Measure three blocks from one mould and compare the diagonals.

Third, hold the hydraulic pressure and watch the gauge. Raise the system to working pressure, stop the pump and watch for a drop over a few minutes, because a system that cannot hold pressure has worn seals. Fourth, confirm the spare parts are still in production: seals, pumps and bearing sets. A machine whose parts are obsolete is one you rebuild, not run.

What does a new machine actually buy you?

A new machine buys four checkable things. The first is spares availability: a mould, a pallet, a seal kit and a pump still made to a drawing, so a failure costs days instead of a season. The second is matching, because the mould and the pallet are sized to the machine rather than adapted to it.

The third is installation and training. Someone has to set the machine on its foundation, connect it to the supply it was ordered for, and teach the crew the cycle, the water to cement ratio of 0.35 to 0.45 and the cement dosage of 200 to 260 kg per cubic metre. The fourth is acceptance in stages: factory acceptance before shipment, installation acceptance on site, trial production, then the 7 day and 28 day strength nodes.

Documentation is the fourth difference. Installed power from 22.9 kW to 104 kW and machine weight from 6,200 kg to 34 t arrive as figures, so the incoming supply and the crane are sized once and correctly rather than measured on site.

How does downtime change the cost per 1,000 blocks?

Downtime is the item buyers leave out of the comparison and then meet in the first month. When a machine stops mid shift, amortisation, wages and the yard keep running while nothing is pressed, and the cost per 1,000 blocks carries all of it. A plant waiting for a hydraulic seal does not recover the lost output, because the order is already late.

This is where a used machine earns or breaks its discount. If the pump, the seals and the exciter bearings are still in production, a used unit is repaired in days and the arithmetic stands. If any of those three is obsolete, every failure becomes a search, and the discount is spent on the first breakdown.

Consumables follow the same rule. Pallets are the largest consumable item on the pallet based production route, and faster pallet wear lifts that line. Mould wear lifts the reject rate. Neither appears in the purchase price.

The verdict on second hand against new for Syria

A used block machine can be the right answer for a small batch order or a short contract where the plant will not run two shifts. For that buyer, a machine that is already amortised and still holds pressure is cheaper per 1,000 blocks than a new unit.

Set two veto lines before you buy. The first is whether the machine can run two shifts continuously, because a used unit that survives one shift cannot carry a factory. The second is whether spares can be supplied: pump, seals, bearings, moulds and pallets, still in production and reachable. Fail either line and the discount does not matter.

For the itemised comparison, send the block type and size you sell, the output you need per shift, how many moulds, your pallet size, your site voltage and frequency, and your discharge port. We return a configuration and a cost structure line by line, machine, moulds, pallets, spares and commissioning, and each line is checkable against a specification.