Description
Stocked Configuration — QMJ4-45 mobile block machine units are kept on the factory floor with standard moulds, tested, and dispatched within days once voltage is confirmed.
Technical Specifications
| Parameter | Value |
|---|---|
| Model | QMJ4-45 |
| Product Type | Mobile Egg-Laying Concrete Block Making Machine |
| Rated Power | 7.4 kW |
| Molding Cycle | 45 s |
| Output Capacity | 2400 pcs/8h (basis: 400×200×200 mm hollow block, 4 pcs/mould); 3200 pcs/8h (basis: 400×150×200 mm block, 5 pcs/mould) |
| Pcs per Hour | 300 pcs/h (basis: 400×200×200 mm block); 400 pcs/h (basis: 400×150×200 mm block) |
| Raw Materials | Concrete, sand, cement, fly ash, lime, gypsum |
| Machine Weight | 1 T |
| Overall Dimensions | 1550×1335×1580 mm |
| Pallet Size | No need pallets (egg-laying / mobile type) |
| Voltage | Configurable according to buyer’s local voltage |
| Control System | Manual force control and jog control |
| Orientation Mechanism | Four-pole orientation with ultralong orientation bearing |
| Electrical Components | Imported electrical appliances |
| Hydraulic / Sealing Parts | Imported sealing and hydraulic components |
| Mould Change | Multi-format capable — road blocks, curb stones, hollow bricks via mould change |
| Automation Level | Semi-automatic |
| Assembly State | Fully assembled |
Application Suitability
| Application | Material or Output |
|---|---|
| On-site hollow block production | Concrete mix with local crushed stone and cement |
| Curb stone production | Dense concrete mix with fine aggregate and cement |
| Road block and paving production | High-strength mix with sharp sand and Portland cement |
| Interlocking paver production | Pigmented concrete mix with river sand |
| First-time plant startup | Low-volume concrete product runs without pallet investment |
What "2,400 Blocks a Day" Leaves Out When No Format Is Named
Every output figure on this page states the exact block size and mould count it assumes.
Capacity numbers in mobile block machine catalogues are often quoted as a single daily total with no reference to which block is being pressed. A buyer reading "3,000 blocks per day" might assume hollow blocks when the figure was calculated on small solid bricks. On a QMJ4-45, 2,400 pieces per 8-hour shift applies to 400×200×200 mm hollow blocks at 4 pieces per mould, while the same cycle produces 3,200 pieces if the mould is swapped to a 400×150×200 mm format yielding 5 pieces. Knowing this before you order prevents the gap between quoted capacity and the blocks your market actually buys [NEED_CITE: block format and output transparency in mobile machine quotations].
How Stock Availability Changes Your Project Timeline
When a mobile block machine in stock is reserved the day the voltage is confirmed, the gap between order and container loading shrinks from multi-week production to a few days of final inspection. The QMJ4-45 units held on the factory floor are fully assembled, run through a dry-cycle factory test, and photographed with the buyer’s nameplate before crating. This matters for contractors working against a project deadline — the machine arrives as a single unit, wheels down on a level pad, and starts laying blocks the same week.
Dispatch Lead Time and Container Loading Upfront
A mobile block machine with fast delivery is only useful if the container plan is clear before the deposit is paid. The QMJ4-45, at 1,550 mm long and 1 T, loads into a standard 20-foot container with room for spare moulds, hydraulic seals, and a pallet of wearing parts [NEED_CITE: container loading guidelines for single-unit mobile block machines]. The dispatch lead time is quoted in calendar days at the proposal stage — not as a range — so the buyer can book vessel space against a known date.
Orientation Bearings, Cycle Time, and What They Mean on Uneven Ground
The four-pole orientation with an ultralong bearing keeps the pressure head aligned with the mould cavity as the machine is pushed across a site. Without that alignment, a 45-second cycle would produce blocks with uneven wall thickness — one side dense, the other crumbly. At 7.4 kW total power, the vibration motor must transfer energy into a wet concrete mix that varies from batch to batch depending on local sand moisture and aggregate grading. The manual jog control lets the operator feel when the mould is fully charged before the pressure head descends, which is how a skilled operator maintains block strength across different raw material sources. On a housing project where the ground is compacted soil rather than a poured slab, that bearing travel is what keeps the blocks within dimensional tolerance from the first metre to the last [NEED_CITE: orientation bearing wear in mobile egg-laying block machines].
The Cost of Skipping Voltage Confirmation Before Crating
A machine wired for 380V/50Hz that arrives at a site running 220V/60Hz does not just fail to start — the motor draws excessive current, overheats the winding insulation, and can burn out within the first hour. Rewinding a motor on-site in a region without a specialist winding shop turns a three-day commissioning into a three-week delay. Every QMJ4-45 leaving the floor has its motor nameplate photographed alongside the buyer’s local utility specification sheet, and the control panel wiring is checked against that same document before the crate is closed [NEED_CITE: motor rewinding delays in export equipment commissioning].
Why Buyers Source This Machine Here
The QMJ4-45 is kept as a stocked model with standard hollow-block and paving moulds on the floor, so the lead time quoted is the lead time that happens.
Configuration is confirmed against the buyer’s local aggregate and voltage before the machine leaves the assembly bay — not after it arrives and the motor will not turn.
Moulds for the formats the buyer’s market actually sells are included in the first shipment, with custom drawings accepted for non-standard curb or interlocking profiles.
Dispatch documentation includes a capacity calculation sheet that states the block format, cycle time, and pieces per mould for every figure quoted.
Spare hydraulic seals, electrical contacts, and vibration motor brushes are packed in the same container so the first replacement cycle does not require an air-freight emergency order.
Documentation & Verification
- Factory test record showing cycle count and block dimensions before crating
- Capacity calculation sheet listing output per block format and mould
- Motor nameplate photograph matched to buyer’s voltage and frequency
- Hydraulic and electrical schematic with component part numbers
- Packing photographs showing dismantling state and crate securing
- Operation and maintenance manual with wear-part replacement intervals
Installation, Commissioning & Support
- Machine arrives fully assembled on its own chassis; requires a level compacted pad of at least 4×4 m
- 7.4 kW total load requires a dedicated 3-phase circuit at the confirmed local voltage and frequency
- First production run supervised to match vibration time to local aggregate moisture content
- Mould change procedure demonstrated with the buyer’s operator using the supplied toolkit
- Hydraulic seal and vibration motor brush stock sufficient for the first replacement cycle
- Monthly orientation bearing inspection scheduled around the 45-second cycle count
What to Include in Your Inquiry
Provide the block formats your market buys most, the daily volume you need per format, and your site voltage and frequency so the machine can be configured before dispatch. Share a sample of your local sand or aggregate grading if available — this determines the vibration time setting written into the factory test record.
Frequently Asked Questions
Q: Which QMJ4-45 units are currently in stock and what is the dispatch lead time?
A: Stocked QMJ4-45 units on the floor are fully assembled and have completed a dry-cycle factory test. Once the buyer’s voltage and frequency are confirmed in writing and the container booking is made, dispatch follows within a few days. The exact date is quoted at the proposal stage, not as an open-ended range.
Q: How is daily output verified — and for which block format is the capacity figure stated?
A: Output is stated per format: 2,400 pieces per 8-hour shift on 400×200×200 mm hollow blocks at 4 pieces per mould, or 3,200 pieces on 400×150×200 mm blocks at 5 pieces per mould, both at a 45-second cycle. The capacity sheet supplied with the quotation names the exact format and piece count assumed.
Q: What container size is needed and how is the machine dismantled for shipment?
A: The QMJ4-45 fits a standard 20-foot container without dismantling the main frame. The pressure head assembly and mould are secured in place, and spare moulds plus wearing parts fill the remaining floor space. Packing photographs are taken before the crate doors close.
Q: Can voltage and frequency be matched to my local supply before dispatch?
A: Yes. The motor is specified to the buyer’s confirmed voltage and frequency, and the nameplate is photographed against the buyer’s utility document before crating. This prevents the on-site rewinding delays that happen when a machine arrives with the wrong motor rating.
Q: Are moulds and hydraulic wear parts shipped with the machine, and what is the first-replacement timeline?
A: The initial mould set for the buyer’s chosen formats is packed in the same container. Hydraulic seals, electrical contacts, and vibration motor brushes for the first replacement cycle are included so that routine maintenance does not depend on an urgent international shipment.
