01 What is a overhead conveyor shot blasting machine?

The overhead conveyor shot blasting machine, also known as an overhead through-type shot blasting cleaner, operates on the principle of combining suspended conveying with continuous shot blasting. During operation, the workpiece is lifted and transported at a uniform speed by the overhead chain into a closed cleaning chamber. Multiple shot blasting units run simultaneously, delivering comprehensive blasting treatment to the workpiece, effectively completing surface rust removal and strengthening processes. Designed primarily for continuous production, this equipment features fully automated operation throughout the entire process—from workpiece feeding to final cleaning—requiring no manual intervention. With stable performance and outstanding efficiency, it has become the mainstream equipment for surface treatment in industrial production lines.

The core workflow is divided into 5 steps: 
1.Loading and mounting: The workpiece to be processed is hung on the customized lifting fixture of the hanging chain, which is operationally convenient. 
2. Continuous conveying: The suspended chain runs at a constant speed, smoothly transporting the workpiece into the enclosed cleaning chamber. 
3. Comprehensive blasting: Multiple high-power blasting machines are activated simultaneously, performing 360° non-stop blasting on the workpiece to remove oxide scales and rust, and enhancing the surface stress. 
4. Particle and impurity separation: The projectiles are accurately separated from the impurities. Qualified projectiles are recycled, while the dust is efficiently collected. 
5. Discharging of materials: The processed workpieces are automatically discharged and directly enter the next production stage.

02 Why do they all choose it for mass production?

Compared to hook-type and crawler-type shot blasting machines, the core competitiveness of the overhead conveyor shot blasting machine lies in its ability to "adapt to batch production while balancing efficiency and quality," which is precisely why it has become the industry standard.

✅ Efficient and continuous, doubling production capacity

The circular chain system enables continuous pipeline operation, with an hourly processing capacity reaching dozens to hundreds of pieces—far exceeding that of manual polishing and conventional shot blasting machines.

✅ Even coverage with no blind spots, quality under control

Equipped with multi-angle shot blasting nozzles and an automatic rotating hook design, the steel shot thoroughly covers every part of the workpiece. After treatment, the surface is uniformly clean, free from deformation or missed areas, while also becoming more durable, effectively extending service life. Additionally, it significantly improves paint adhesion during subsequent spraying, resulting in a stronger and longer-lasting coating finish.

✅ Durable and eco-friendly, with low operating costs

The shot blasting chamber is equipped with Mn13 high-manganese steel liners, ensuring wear resistance and impact resistance for key components. The system features abrasive recycling and low-energy consumption design, significantly reducing material and electricity costs. With a sealed chamber body and pulse dust collection, it meets standards for dust and noise control, improving workshop working conditions and preventing environmental penalties.

✅ Flexible adaptation with strong compatibility

Modular design compatible with spray painting, heat treatment, and other production lines; supports custom non-standard configurations. Single hook load capacity ranges from 50 to 2000 kg, with shot blasting parameters and operating modes adjustable according to workpiece dimensions and processing requirements.

✅ Smart and secure, easy to operate

The PLC control system enables fully automatic operation, featuring fault detection, safety interlocking, and abnormal alarm functions, eliminating the need for specialized operators and significantly reducing labor costs.

03 Selection Tips

The overhead conveyor shot blasting machine is mainly used for the shot blasting treatment of large quantities of workpieces. In terms of structural form, it can generally be divided into Q38 series continuous through-type, Q48 series ordinary suspended chain step-through type, and Q58 series stack conveyor type, etc.

Q38/Q48 Series Chain-Type Shot Blasting Cleaning Machine

Application fields of  Q38/Q48 series chain-type shot blasting cleaning machine
It is mainly used for shot blasting cleaning and strengthening of medium and small-sized castings, forgings, etc. for mass production. It is mainly applicable to industries such as automobiles, tractors, diesel engines, electrical motors, valves, etc. 
Product features of Q38/Q48  series chain-type shot blasting cleaning machine
It features the static loading and unloading of workpieces, automatic and rapid transportation, and the ability to conduct continuous passing of workpieces through shot blasting cleaning (in the Q38 series) as well as multi-position fixed-point workpiece rotating shot blasting cleaning (in the Q48 series). 
2. It has the advantages of high production efficiency and low costs. 
3. Compact structure, easy to operate; 
4. The product models are diverse, and they can be applied to different production efficiency requirements and workpiece sizes. 
5. The modular design can be integrated into the existing production line to achieve mechanical automated production.

Q58 Series Chain-Type Shot Blasting Cleaning Machine
Application fields of Q58  series chain-type shot blasting cleaning machine
It is mainly used for shot blasting and surface cleaning of medium-sized parts in scenarios involving small varieties and large quantities of production, as well as in scenarios involving multiple varieties and medium to small quantities of production. It has strong adaptability and is widely applied. 
Product features of the Q58  series chain-type shot blasting cleaning machine
It can operate either continuously or in batches or intermittently, allowing for flexible production organization and high production efficiency. 
2. The castings pass through the shot blasting area at a low speed, or rotate at multiple fixed positions within the shot blasting area, resulting in excellent cleaning results. 
3. It can be loaded and unloaded statically, and the operation is very convenient.

Different production requirements call for different models of overhead conveyor shot blasting machine. Here are 3 practical selection tips to avoid making mistakes: 
1. Large quantities of standard components (such as hardware and agricultural machinery parts): Choose the Q38 series continuous conveyor type, which is highly efficient, stable and has a good cost-performance ratio; 
2. Complex components, reinforced processing (such as precision gears, automotive parts): Choose the Q48 series multi-station fixed-point rotating type for more precise processing; 
3. Multi-variety, small-batch production: Choose the Q58 series stacker type, which is capable of both continuous and stepwise operation, and is flexible enough to accommodate different workpieces.

04 These industries all rely on it to improve efficiency

The "hanging conveyance" feature of the overhead conveyor shot blasting machine  makes it particularly suitable for large and medium-sized, batch-type workpieces that can be hung. It is widely used in several mainstream manufacturing industries: 
🚗Automobile manufacturing: Surface strengthening and pre-treatment of components such as chassis, axles, wheels, engine blocks/cam covers, springs, etc., to meet the cleaning requirements for the battery shells of new energy vehicles; 
🏗️ Construction machinery: Cleaning and strengthening of large structural components such as the bucket rods of excavators, the chassis of loaders, and the boom of cranes after welding, to enhance corrosion resistance; 
🛠️Steel structure and construction: Rust removal and pre-treatment for steel columns of bridges, factory buildings, pressure vessels, etc., can achieve a daily processing capacity of 3,000 square meters of steel plates; 
🛤️ Casting/Forging: Removal of molding sand from engine cylinder blocks, gearboxes, etc., and stress relief for crankshafts, connecting rods, etc.

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