The hook-through type shot blasting machine transports the workpieces continuously through the hook system, ensuring that the workpieces are in a continuous state during loading an
The hook-through type shot blasting machine transports the workpieces continuously through the hook system, ensuring that the workpieces are in a continuous state during loading and unloading as well as in the shot blasting are a. This enables a continuous shot blasting process. Depending on the type of workpiece, it can lift a single point load of 500 to 5,000 kg. It has high productivity, reliable operation, and is highly suitable for the large-scale cleaning of various easily-hangable parts. Generally, it can be designed and manufactured according to the user's product requirements.
Application Cases of Shot Blasting Machines for Doosan Heavy Industry
Applications
Suitable for shot-blasting, deburring, and descaling operations on parts that can be suspended (such as those with mounting holes), construction machinery components, welded steel structures, and various cast or forged parts. It delivers exceptional cleaning results for items such as engine blocks and cylinder heads, motor housings, gears, motorcycle engine casings, locomotive coupler yoke assemblies, bogie components, hardware tool housings, and water pumps. It is an ideal choice for industries including automotive, tractor, diesel engine, electric motor, and valve manufacturing.
The hook through-type shot blasting machines manufactured for Nordic customers have won wide acclaim!
Heavy-duty design with a compact, robust structure for extended service life.
High shot flow rate and high efficiency
Saves on abrasive consumption; offers reliable cleaning and dust removal performance.
Numerous types of machines with varying production rates and workpiece sizes.
Features
It is easy to integrate into existing production lines and offers multiple options for gradual scaling and automation (modular design).
Made of highly wear-resistant materials, offering a long service life.
High operational safety, low maintenance requirements, and a maintenance-friendly design (easy access to maintenance areas and external bearings; easy replacement of wear parts).
Strong sand separation capacity, integrated magnetic separation and air washing separation functions.
Application
Sand removal, core removal, and final shot blasting of iron, steel, and light metal castings (including parts prone to breakage or impact damage)
Descaling of castings, hardened parts, or heat-treated components
Rust removal, rough processing, and finishing
Shot peening
The hook through type shot blasting machine for ring gauges, manufactured for European clients, has been highly acclaimed.
The Qingdao KEEJOO Group hook through type shot blasting system encompasses a range of heavy-duty equipment designed for various production environments, such as foundries and forge shops. These overhead shot blasting machines deliver cost-effective cleaning solutions. (Pictured left: A European customer highly praises our shot blasting machine, expressing surprise at the exceptional quality and craftsmanship of Chinese-made equipment.)
Mature solutions
The standard product series features machine modules of various sizes, equipped with 2, 3, 4, 12, or more blast wheels. Multiple modules can be connected in series depending on the dimensions of the parts to be cleaned and the required throughput. The unique arrangement of the blast wheels ensures that all surfaces of the components—including undercut walls and recessed areas—are treated in a single pass.The image below shows a ring-gauge pass-through shot blasting machine manufactured for BYD (Shaoshan). It utilizes 16 high-efficiency German-style blast wheels, positioned via computer simulation; the system has received high praise and strong endorsement from BYD management and on-site operational teams.
The hook pass through shot blasting machine manufactured for BYD Guangdong has been highly acclaimed!
It completes shot blasting cleaning operations while resolving conveying issues.
The hangers carrying workpieces inside the shot blasting chamber can rotate and swing, or rotate at various blasting positions to ensure full cleaning of workpiece surfaces.
Standard Machine Modules
HTR Overhead Hanging Shot Blasting System with reversible operation.
HK Overhead Hanging Shot Blasting System, featuring both through-type and rotary operation modes.
The hook through type shot blasting machines for ring gauges manufactured for Liangshan Tongya have earned favorable reviews!
Hanging Conveyor System
As conveying equipment, the overhead hanging system not only delivers an optimal logistics solution, but also cuts substantial overall costs.
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The overhead hanging system not only meets the requirements of shot blasting cleaning, but also solves loading and unloading issues. With flexible configuration of tracks, switches and turnouts, logistics routes can be easily modified and extended at limited cost.
Workpieces are loaded onto hooks outside the blasting chamber manually, by forklift, overhead crane, lifting hoist or robot, then conveyed into the shot blasting chamber for complete full-surface cleaning in one single pass.
Reciprocating or pass-through operation
Driven by the drive system, the hooks travel and rotate within the blasting zone. Bidirectional rotation (clockwise and counterclockwise) is available as an optional extra. This mode enables blast coverage of workpieces from all angles to eliminate blind blasting areas.
Closed-loop Track
For workpieces prone to collision damage, the closed-loop track allows workpieces to enter and exit the blasting chamber multiple times, with only specific surfaces treated in each blasting cycle.
Standard Hook System
The design and configuration of the suspension hooks depend on the characteristics of the workpieces and the objectives of the shot blasting process; they are categorized into the following types:
small batches of workpieces weighing up to 2,000 kg, a manual hook can be used. If required, electric drive and lifting units can be installed, enabling a lifting capacity of up to 20,000 kg (or even 30,000 kg with a special design).
Chain-driven hook
The chain-driven hook system offers great flexibility and is suitable for companies manufacturing small to medium-sized parts.
Power and Free Conveyor – Features a specialized track system; single-hook load capacity up to 10,000 kg. Automatic Chain Conveyor – Enables intermittent or continuous conveying; load capacity up to 10,000 kg.
Motor-driven hook
Motor-driven hooks are suitable for large, medium, and small workpieces.
When driven by motor, the maximum lifting capacity reaches 10,000 kg.
Ring Gauge Through-Type Shot Blasting Machine Manufactured for Caterpillar
Vehicle and Transport Systems
The pre-programmed drive motor travels along its track.
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The loading and unloading areas can be determined based on site conditions. The movement of the workpiece is controlled by components such as travel switches and limit switches installed on the suspension system.
Monorail hoist with a lifting capacity of up to 50,000 kg. The hoist is mounted on a trolley, enabling the handling of extremely heavy loads.
This machine is equipped with the HAI Ocean Surge® direct-coupled high-efficiency blast wheel (German design with independent patents, Patent No.:ZL 2015 2 0702933.5 ). The blast wheel serves as the core of a shot blasting machine, and its design dictates the overall equipment performance. The HAI Ocean Surge® blast wheel comes as standard for this unit. The H-series blast wheels deliver superior blasting performance. Available in multiple sizes and material options, H blast wheels enable flexible application across diverse manufacturing processes.
Selected Case Studies of KEEJOO Brand Shot Blasting Machines
Hook-type shot blasting machine manufactured for Cummins Engine Company
Hook and monorail conveyor shot blasting machine manufactured for Siemens
Hook through-type shot blasting machine for Doosan Heavy Industries
Hook-type shot blasting machine manufactured for Komatsu Shantui
Large-scale hook-type shot blasting machine for Caterpillar (USA)
Hook-type shot blasting machine for wind power fans, manufactured for Collett & Fil
Large-scale shot blasting machine dedicated to the nuclear power industry, manufactured for Shentong Valve
To date, we have successfully delivered over 1,000 sets of hook-type shot blasting machines both domestically and internationally, maintaining a clear industry-leading position.....
A large listed domestic agricultural equipment group phased out its outdated shot blasting machines in the past two years and fully adopted hook-type shot blasting machines independently developed and manufactured by Qingdao KEEJOO Group. Up to now, the group has purchased a total of 58 units...
The various shot blasting machines manufactured by Qingdao KEEJOO Group for European clients are highly acclaimed and well-received.
Introduction to the Components of the Shot Blasting Machine
1Blast wheel
·The blast wheel and motor adopt Germany-joint developed high-efficiency HP technology. Compared with conventional old-style blast wheels, this design eliminates multiple friction loss links, lifting motor efficiency by 20%, cutting down fault points and slashing maintenance costs by 50%.
·It features a more compact footprint than traditional blast wheels, supports arbitrary installation angle arrangement, and enables far easier inspection and maintenance.
·Constant blasting performance is maintained throughout operation, free from inconsistent and fluctuating cleaning quality seen on conventional units.
·Blades and all wear-resistant consumables are manufactured in Taiwan via high-chromium investment precision casting, delivering outstanding abrasion resistance. Their service life ranges from 1,200 to 4,000 hours, 3–4 times longer than ordinary casting materials.
·Blast wheel impeller: Treated with carburizing wear-resistant alloy. The impeller hub is one-time finished by high-precision CNC machining centers for ultra-high dimensional accuracy, ensuring perfect dynamic balance during high-speed rotation, low vibration, low noise and extended service life.
·Equipped with SKF bearings imported from Sweden.
·Fitted with genuine Siemens motors.
·German Schenck dynamic balancing tester is applied to guarantee precise high-speed dynamic balance of impeller hubs.
2
Abrasive flow valve
1. Semi-automatic flow control system for regulating the flow of abrasive media into the blast wheel, featuring manual adjustment of the steel shot flow rate.
2. Fully sealed structural design, featuring a lockable inspection opening and equipped with two bearings.
3. A manual shut-off valve is installed above each flow valve; this can be closed to stop the flow of media from the hopper, thereby facilitating maintenance of the flow valve.
3
Blasting chamber
1. The shot blasting chamber is constructed from welded manganese steel.
2. Manganese steel protective plates are installed in the "hot zone" of the chamber—specifically covering three-quarters of the area directly exposed to the blast stream—to prevent steel shot from striking the chamber's outer walls; these plates are suspended for easy installation, removal, and replacement.
3. A three-layer sealing structure is installed at the top to prevent steel shot from leaking out during the blasting process.
4
Step-action pneumatic AB doors or continuous light curtain sensing system.
1. The shot blasting chamber features a compact structure and a sealed design based on German technology, ensuring that abrasive media does not scatter during operation.
2. The door utilizes an automatic opening and closing mechanism controlled by pneumatic cylinders.
3.Employing specialized processes and technology, the door is more reliable than conventional designs; it resists deformation and maintains its sealing integrity for 20 years—overcoming the performance degradation typical of traditional sealing methods after just six months.
1. Two sets of light curtain sensors are installed at the inlet and outlet, respectively; used in pairs, the sensor density can be selected based on workpiece size.
2. When a workpiece enters the blast chamber, the inlet light curtain detects its arrival, triggering a delayed start of the blast wheel. A light curtain sensor is also installed at the outlet; when the sensors at both the inlet and outlet detect no workpieces, the flow valve automatically closes immediately to prevent "air blasting" (blasting without a workpiece present).
5
Automatic overhead conveyor System
1. One set of automatic closed-loop overhead conveyor system.
2. One set of tooling system, fabricated by welding wear-resistant steel rods after heat treatment (design can be customized based on specific customer requirements).
3.Variable frequency speed control, allowing speed adjustment according to shot blasting requirements.
5.1
Y‑shaped guide rail and automatic hanger changeover system
1. One set of Y-track trolley systems enables continuous operation across two workstations. A pneumatic valve controls the track-switching mechanism. While one hoist unit is engaged in the shot-blasting process, the other is used for loading and unloading.
2. Two sets of tooling systems, fabricated by welding wear-resistant steel rods after heat treatment (designs can be customized to meet specific customer requirements).
3. Two sets of hoist systems featuring a four-section telescopic framework and a chain electric hoist mechanism, ensuring excellent stability.
6
Sorting system
1. A mesh screen separator is connected to the elevator and positioned above the magnetic separator; fine material passes through the screen into the magnetic separator, while coarse material and impurities are conveyed by a spiral mechanism along the screen to the discharge port at the rear.
2. It is designed to finely separate usable shot, broken shot, and dust, ensuring the uniformity of the shot media.
3.Featuring a welded structure, the interior contains multiple carefully designed compartments for airflow guidance. An access door on the front allows for routine inspection and maintenance; this door is equipped with an air inlet to provide the necessary airflow for dust separation.
4. An adjustable multi-vane baffle structure is used to regulate the uniformity of the falling abrasive curtain.
5. Stationary magnets installed at both the top and bottom enable the fine separation of usable shot from broken steel shot, ensuring the consistency of the blast media.
6. A storage hopper is connected at the bottom; after separation, the usable shot flows into the hopper for storage and subsequent reuse.
7Electrical control cabinet
1. Siemens PLC and touch screen
2. Siemens variable frequency drive (VFD) for speed control
3. Schneider low-voltage electrical components
4. Shot blasting time controller
5. AirTAC pneumatic components
6. Ammeter for flow monitoring
7. 1 lighting fixture
8. Dedicated constant-temperature air conditioning unit (optional)
8
Dust collector
1.Pulse-jet cleaning system
2.Precision filter cartridge filtration system
3.High-efficiency three-stage dust removal
4.Optimized and upgraded Donaldson (USA) dust removal technology system
Standard configuration：
1
Electrical cabinet: This model comes standard with a cooling fan; air conditioning is available as an option.
2
Programmable Logic Controller (PLC): Siemens (other brands available as options upon customer request)
3
Touchscreen: Siemens (other brands available as options upon customer request)
4
Variable Frequency Drive (VFD): Inovance (China) — (Specific brands can be designated upon customer request; we recommend our domestic brand, as its quality is on par with or superior to Siemens.)
5
Power supply voltage: AC 380V, three-phase five-wire system
6
Low-voltage electrical components: Schneider (other brands available upon customer request)
7
Pneumatic components: ARITAC series (other brands available upon customer request)
8
Wires and cables
9
Qingdao KEEJOO Group can also customize various non-standard shot blasting machines according to your requirements.
Qingdao KEEJOO Group comprises three subsidiaries and an international business division, standing as a leading Asian manufacturer of high-end shot blasting and peening machinery, as well as environmental protection equipment. The company has introduced and developed over 100 types of shot blasting and peening machines for cleaning and surface strengthening; more than 20 of these products have filled gaps in the domestic market. Its products are utilized by renowned enterprises such as ThyssenKrupp, Siemens, FAW-Volkswagen, Cummins Engine, Dongfeng Motor, Weichai Power, Sinotruk (Jinan), China High-Speed Rail, Bombardier, Chery Automobile, North Benz, Hitachi Nuclear, Sany Heavy Industry, Fuji Heavy Industries, Tangshan Gear, Aisin (Japan), Alstom (France), Doosan (South Korea), and Caterpillar (USA). With exports reaching 49 countries—including Spain, France, the USA, South Korea, Japan, Singapore, Australia, and Russia—the company enjoys an excellent global and domestic reputation.
In recent years, by introducing and assimilating advanced technologies from companies such as Germany's AGTOS, KEEJOO has achieved a world-class level in product design. The company's high-efficiency, direct-drive shot blasting wheel—representing the best of Asian technology in this field—has garnered praise and recommendations from customers in Europe and the Americas.
The company was among the first in China's casting machinery industry to obtain ISO 9001, German TÜV, EU CE, French BV, and North American FCC certifications, as well as import-export rights. By introducing and further optimizing technologies from Germany, the United States, and other regions, the company has enhanced product performance and accelerated the phase-out of outdated technologies, earning recognition from new and existing customers worldwide.
Next step？
Spare Parts and Consumables
We provide high-quality replacement parts with extended service lives. As a major supplier of spare parts in the industry, we offer rapid global delivery, helping you avoid the need for large inventories and preventing production downtime.
High-end Shot Blasting Unit Manufacturing Workshop
Equipment Upgrade
We will keep you updated on the latest technology upgrades so you can decide whether to incorporate them into your equipment's routine maintenance to ensure optimal service life.
