QTJ4-25 Block Machine

The QTJ4-25 Block Machine is a practical and high-performance concrete block making machine designed for efficient production of various concrete masonry products. It adopts platform vibration technology and a high-strength hydraulic system to provide stable molding performance, strong compaction, and reliable production efficiency.

With a 25-second molding cycle, an exciting force of 60 kN, and an adjustable vibration frequency of 2,800–4,500 times/min, the QTJ4-25 is suitable for small- and medium-scale concrete block production plants, construction material manufacturers, and building projects.

1. Main Technical Parameters

2. Product Features

High-Performance Platform Vibration

The QTJ4-25 adopts a platform vibration system to provide strong and stable vibration during molding. The vibration frequency can be adjusted between 2,800 and 4,500 times per minute, helping optimize material distribution and compaction for different concrete products.

With a vibration acceleration of 15–20 g and an exciting force of up to 60 kN, the machine is designed to achieve effective concrete compaction and consistent forming performance.

Stable Hydraulic Pressure

The hydraulic system operates at a rated pressure of 16 MPa, providing sufficient pressure for the molding process. The combination of hydraulic pressure and platform vibration helps improve product density, dimensional accuracy, and overall forming quality.

Fast Molding Cycle

The machine has a standard molding cycle of approximately 25 seconds, allowing efficient continuous production and helping manufacturers increase daily output.

Flexible Product Height

The QTJ4-25 supports products with heights ranging from 50 to 200 mm, providing flexibility for different concrete block, paving, and masonry product specifications.

Practical Pallet Size

The standard pallet dimensions are 850 × 480 × 40 mm, providing a stable platform for freshly molded products and facilitating subsequent handling and curing processes.

3. Strong and Consistent Forming Performance

The combination of 60 kN exciting force, 15–20 g vibration acceleration, and 16 MPa rated hydraulic pressure provides strong forming capability.

During operation, the concrete mixture is effectively distributed and compacted inside the mold. This helps improve:

• Product density
• Dimensional consistency
• Surface appearance
• Structural uniformity
• Overall molding stability

The final product quality depends on factors such as concrete mix ratio, aggregate grading, moisture content, mold condition, and operating parameters. Concrete, naturally, insists on having opinions about all of them.

4. Flexible Product Applications

The QTJ4-25 can be equipped with different molds according to customer requirements. With suitable molds, the machine can be used to manufacture various concrete products, such as:

• Hollow concrete blocks
• Solid concrete blocks
• Paving blocks
• Paver bricks
• Kerbstones
• Other customized concrete products

The supported product height range of 50–200 mm allows manufacturers to select different product configurations based on project requirements and market demand.

5. Production Efficiency

With a molding cycle of approximately 25 seconds, the QTJ4-25 is designed for continuous production.

Actual production output depends on:

• Product dimensions
• Number of pieces per mold
• Concrete mix design
• Raw material characteristics
• Worker operation
• Molding cycle settings
• Production site conditions

By selecting the appropriate mold and optimizing the production process, manufacturers can achieve efficient concrete product manufacturing with stable quality.

6. Compact and Robust Construction

Although the maximum machine dimensions reach 5600 × 1850 × 2400 mm, the QTJ4-25 is designed with a robust structure suitable for continuous industrial use.

The total machine weight is approximately 3,500 kg, providing a stable operating platform and helping reduce vibration-related movement during production.

7. Energy and Power Configuration

The total installed power of the QTJ4-25 is 17 kW. The power system is designed to support the hydraulic system and high-frequency vibration during the molding process.

The machine provides a practical balance between forming performance and overall power consumption, making it suitable for manufacturers seeking efficient concrete product production.

8. Applications

The QTJ4-25 Block Machine is suitable for a wide range of construction and building material applications, including:

• Residential construction
• Commercial buildings
• Industrial buildings
• Partition wall construction
• Masonry projects
• Road and paving projects
• Landscaping projects
• Construction material production plants
• Customized concrete product manufacturing

9. Key Advantages

High Exciting Force

The 60 kN exciting force provides strong vibration for effective concrete compaction.

Adjustable Vibration Frequency

The 2,800–4,500 times/min vibration frequency range allows production parameters to be adjusted for different products and materials.

Fast Production Cycle

A 25-second molding cycle supports continuous and efficient production.

Flexible Product Height

The machine can manufacture products with heights from 50 to 200 mm, providing greater mold flexibility.

Stable Hydraulic Forming

The 16 MPa rated pressure supports reliable hydraulic operation and consistent molding.

Durable Industrial Design

With a machine weight of approximately 3.5 tons, the QTJ4-25 provides a solid and stable structure for long-term production environments.