Semi-Automatic Block Making Machine
Cost-effective block production solution combining operator control with mechanical automation. Produce 7,200 – 9,257 blocks per day with only 4 workers. Compact footprint and low power consumption, perfect small-scale factory equipment for investors with limited startup capital.
KEY NUMBERS:
- Daily Output | 7,200 – 9,257 Blocks
- Investment Range | $32K – $42K
- Monthly Profit Potential | $5.2K – $9.3K
- ROI Period | 19 – 24 Months
- Global Installations | 300+ Systems Operating
What is a Semi-Automatic Block Making Machine?
A lightweight semi-mechanized concrete block production line with hydraulic forming system. Operators assist pallet feeding and finished block handling, the machine completes vibration compression automatically. Molding cycle 15-20s, forming tolerance ±1mm, stable output of 7,200~9,257 blocks per 8-hour shift with just 4 staff. Equipped JQ35 small mixer, simple structure, low power and low workshop space demand, 50% lower investment cost compared to mid-range full automatic machines. Supports hollow blocks, solid bricks and interlocking pavers after mold replacement.
WHO IS IT FOR:
- New investors with limited budget below $50,000
- Small rural block workshops with small land area
- Factories currently using manual machines for upgrade
- Merchants testing local construction material market demand
- Operators who want to control early investment risk
Why Choose Semi-Automatic Production?
Six core competitive edges for small-budget block manufacturers
Ultra Low Initial Investment
QT4 series semi-auto lines cost only $32K-$42K, far cheaper than automatic equipment, greatly reducing startup financial pressure.
Small Space Occupation
Only 60~200㎡ workshop required, suitable narrow rural factory premises without large land rent cost.
Low Power Consumption
Total power only 23.15kw, monthly electricity expenditure cut by 60% vs mid-size automatic machines.
Rural Small Fixed Block Plant
Only 4 workers needed, 20-hour simple training for full operation, easy to recruit local workers.
Fast Mold Replacement
Switch molds within 15-20 minutes to produce hollow blocks, solid bricks, paving bricks flexibly respond market orders.
Simple Maintenance
Few complex hydraulic and electrical parts, wearing parts cheap and easy to source, daily maintenance time less than 30 minutes.
Complete Range of Semi-Automatic Block Machines
Two Classic Semi-Auto Models: QT4-28 & QT4-24
Best-Seller High Efficiency Semi-Auto | QT4-28
Higher daily output among semi-automatic models, stable hydraulic vibration system, small 60㎡ footprint, ideal for mini fixed block plants with steady local orders.
- Capacity:
-
Hollow Block 400×100×200: 7,200 pcs/8hr
-
Hollow Block 400×150×200: 4,114 pcs/8hr
-
Hollow Block 400×200×200: 4,114 pcs/8hr
-
Solid Brick 240×115×50: 18,514 pcs/8h
-
H Paver 200×163×60: 6,171 pcs/8h
- Power: 23.15 kW
Entry Budget Semi-Auto | QT4-24
Cost-effective basic semi-automatic line, standard 200㎡ layout, mature stable structure, first choice for market testing startups.
- Capacity:
-
Hollow Block 400×100×200: 7,749 pcs/8hr
-
Hollow Block 400×150×200: 5,535 pcs/8hr
-
Hollow Block 400×200×200: 4,428 pcs/8hr
-
Solid Brick 240×115×50: 28,782 pcs/8h
-
H Paver 200×163×60: 8,856 pcs/8h
- Power: 23.15 kW
Technical Specifications - QT4-28 VS QT4-24
All parameters extracted from original Raytone catalogue
| SPECIFICATION ITEM | QT4-28 | QT4-24 |
|---|---|---|
| Overall Dimension (L*W*H mm) | 2600*2000*2000 | 1800*1500*2520 |
| Total Installed Power | 23.15kw | 23.15KW |
| Pallet Size | 850*450*20mm | 850*550*20mm |
| Vibration Force | 50KN | 50KN |
| Main Machine Weight | 3.2T | 1.5T |
| Required Operators | 4 persons | 4 persons |
| Matching Mixer Model | JQ350 | JQ350 |
| Needed Workshop Area | 60 m² | 200 m² |
| Estimated Full Line Investment | $42,000 | $32,000 |
| Monthly Net Profit Range | $7,500 – $9,300 | $5,200 – $7,800 |
| Average ROI Cycle | 19 – 21 months | 21 – 24 months |
Daily Output Per 8-Hour Shift (Different Block Sizes)
| Block Size Spec | QT4-28 Daily Output | QT4-24 Daily Output |
|---|---|---|
| Hollow Block 400×100×200 | 7,200 | 7,749 |
| Hollow Block 400×150×200 | 4,114 | 5,535 |
| Hollow Block 400×200×200 | 4,114 | 4,428 |
| Solid Brick 240×115×50 | 18,514 | 28,782 |
| H Paver 200×163×60 | 6,171 | 8,856 |
Professional Capacity Selection Guide
Select QT4-28 or QT4-24 according to your capital, factory space and market demand
Mini Factory with Limited Land Space
QT4-28 – Compact Space Choice
$35K–$45K budget, ideal for 7K-9K daily demand in limited space.
Only 60㎡ footprint — highest output per square meter.
Low risk (19-21 months ROI) with upgrade path to automatic line in Year 2-3.
Ultra-Low Budget Market Test Startup
QT4-24 – Minimum Risk Choice
<$35K budget, ideal for testing unstable markets with minimal capital exposure.
Lightweight 1.5-ton machine — easy transport and flexible deployment.
Very low risk (21-24 months ROI) with upgrade path if demand grows.
Manual Factory Mechanization Upgrade
QT4-28 / QT4-24 – Manual Upgrade Choice
Upgrading from manual production (2K-5K blocks/day) to double capacity with small investment.
QT4-28 for limited space; QT4-24 for sufficient space with tight budget.
Fast mechanization leap — proven reliability with minimal capital risk.
Rural Small Fixed Block Plant
QT4-28 – Local Supply Choice
Stable local demand (7K+ blocks/day) with small workshop constraints.
Smallest footprint saves land rent — higher hollow block capacity per square meter.
Fast payback in compact spaces — proven for long-term supply businesses.
2 Hot Semi-Automatic Machines Full Introduction
QT4-28 and QT4-24 are our most popular semi-automatic models, proven across 150+ installations in Africa and Asia. QT4-28 leads the compact factory market ($42K, 7,200 blocks/day), while QT4-24 dominates budget startups ($32K, 7,749 blocks/day). Both deliver 19-24 month ROI with simple maintenance and local serviceability.
QT4-28 High Efficiency Semi-Automatic Block Machine
Compact semi-automatic production line specially designed for mini factories, only 60㎡ workshop needed. 50KN stable vibration force, matched JQ350 mixer, single machine complete batching-mixing-forming workflow.
Daily Output (8h):
7,200pcs Hollow 400×100×200 | 18,514pcs Solid Brick | 6,171pcs Interlocking Pavers
Suitable Clients: Mini fixed block plants, factories with limited land area, merchants with stable small-batch orders
Investment & Operation Data:
Full Line Cost: $42,000
Required Staff: 4 workers
Workshop Area: 60 ㎡
Monthly Net Profit: $7,500-$9,300
ROI Cycle: 19-21 months
[Get Custom Quote] [Download Full Spec Sheet]
QT4-24 Budget Semi-Automatic Block Machine
Entry-level cost-saving semi-automatic equipment, light 1.5-ton body easy transportation, standard 200㎡ layout. Simple hydraulic vibration system, low maintenance cost, best choice for market test startups.
Daily Output (8h):
7,749pcs Hollow 400×100×200 | 28,782pcs Solid Brick | 8,856pcs Paving Bricks
Suitable Clients: First-time investors, market testing workshops, ultra-low budget block entrepreneurs
Investment & Operation Data:
Full Line Cost: $32,000
Required Staff: 4 workers
Workshop Area: 200 ㎡
Monthly Net Profit: $5,200-$7,800
ROI Cycle: 21-24 months
[Get Custom Quote] [Download Full Spec Sheet]
More Than A Single Host - Full Semi-Auto Supporting Package
Matching auxiliary machines to ensure stable production
Raw Material Preparation
Aggregate storage zone, cement stacking area, water supply pipeline
Material Processing Unit
JQ350 Pan Mixer (standard matching model)
Manual feeding platform, simple material conveying chute
Core Forming Equipment
QT series semi-automatic main machine
50KN vibration system, hydraulic pressure station
850 standard plastic pallets
Post-Processing Work
Manual finished block carrying trolley
Simple stacking frame for curing
Why Integrated Set Is Necessary
Only buying main machine will cause production bottleneck:
1. No matched mixer leads raw material supply interruption
2. Lack pallets stop continuous forming
3. No handling tools slow finished block circulation
Full Set Benefits
Complete matched equipment one-stop delivery
No extra purchasing auxiliary machines separately
Factory layout drawing free design
All equipment compatible stable operation
Full Package We Supply
Common Questions Answered
What is the difference between QT4-24 and QT4-28?
QT4-28 occupies only 60㎡ small space, higher hollow block output, higher investment; QT4-24 is lighter, cheaper, requires 200㎡ workshop, higher solid brick yield, suitable market test.
Can semi-auto machine produce multiple block types?
Yes, mold replacement takes only 15-20 minutes, can produce hollow blocks, solid standard bricks, interlocking paving bricks.
How many workers do I need to run the whole line?
Both QT4-28 and QT4-24 only need 4 operators, responsible for feeding, pallet placing, finished brick moving separately.
Can I upgrade to full automatic machine later?
Yes, after 1.5-2 years profitable operation, you can sell or retain semi-auto line as backup, add QT6-15/QT8-15 automatic production line to expand capacity.
How long is machine service life?
Main frame 10-12 years, hydraulic parts 6-8 years, molds 3-5 years, regular simple maintenance can extend service life greatly.
Is semi-auto machine cost-effective compare to manual equipment?
Manual machine daily output only 2,000-5,000 blocks, semi-auto can reach over 7,000 pieces, better dimensional uniformity, higher selling price, profit increased significantly.
What if my power supply is unstable?
We can provide matched small diesel generator as backup power supply for semi-automatic line.
