HKD Medium & Large Monorail Hanger Shot Blasting Machine
Qingdao KEEJOO Group monorail hanging shot blasting machines shorten production cycles and cut unit workpiece costs. They are applicable to diverse working scenarios as well as wor
Qingdao KEEJOO Group monorail hanging shot blasting machines shorten production cycles and cut unit workpiece costs. They are applicable to diverse working scenarios as well as workpieces of various shapes and sizes.
This equipment is primarily used for the shot blasting of welded steel structures, as well as for deburring, derusting, and descaling castings and die-cast parts. Available in single-hook and double-hook configurations, the machine utilizes hooks to alternately transport workpieces into the blasting chamber. High-efficiency blast wheels propel abrasive media (0.1–1.5 mm in diameter) onto the workpiece surface to achieve a specific roughness profile, enhance aesthetic appeal, or induce compressive stress to extend service life. The rail system typically comes in "I" or "Y" configurations, with one or two heavy-duty hooks—controlled manually or automatically—moving into the chamber for processing. Through the combined action of multiple blast wheels and the rotation of the hooks, all surfaces of complex workpieces can be thoroughly cleaned. This model is widely used across industries such as gear manufacturing, forging, casting, construction, chemicals, electric motors, and machine tools for the surface cleaning or strengthening (peening) of small- to medium-sized castings and forgings—tasks that include removing scale, burrs, and sand residues. It is particularly well-suited for processing slender or thin-walled components that are susceptible to damage from impact. As a standard model, the hook-type shot blasting machine offers a range of chamber dimensions, with rotation diameters from 1,000 to 4,000 mm and heights from 1,200 to 5,000 mm. Equipped with 2 to 15 blast wheels and a load capacity of up to 50,000 kg, the machine delivers high productivity and exceptional versatility, making it an ideal solution for cleaning and strengthening operations. It is easy to operate: simply load the workpiece, press the start button, and the entire process—including the removal of dust and residual abrasive—is completed in a short cycle (typically 5–7 minutes). It is primarily applied to the surface treatment of various medium-to-large castings, forgings, weldments, and heat-treated parts, including those that are fragile or irregularly shaped.
Applications
Primarily used for shot blasting—to remove rust and strengthen surfaces—on workpieces such as castings, forgings, die-castings, riveted and welded assemblies, sheet metal parts, and stamped components; as well as engine blocks, crankshafts, pistons, valves, axles, wheel hubs, brake drums, rims, brake discs, coil springs, leaf springs, vehicle frames, tanker trucks, kitchenware (woks, soup pots, aluminum pots), bolts, dumbbells, and steam turbine components.
HKD Medium & Large Monorail Hanger Shot Blasting Machine
Delivery:
6 to 9 weeks
Technology:
Shot Blasting
Application:Process:
Cleaning, Deburring, Rust Removal,
Thermal Descaling, Shot Peening
Industry:
Light & Medium
Duty
Process
Batch
Advantage
Removal of rolling and forging scale and rust removal
Remove burrs and oxide scale.
Increase surface roughness
Shot peening improves the fatigue strength of workpieces.
Features
Versatile conveying technology
High-efficiency blast wheel
Wide range of equipment sizes and functions available
Application
Removal of rolling and forging scale and rust
Removal of burrs and scale
Improve surface roughness
Shot peening to enhance workpiece fatigue strength
Shorten production cycles and reduce the cost per workpiece.
The Qingdao KEEJOO Group Monorail Hanger Shot Blasting Machine is suitable for a wide range of applications and for workpieces of various shapes and sizes.
Applications include:
Shot blasting of welded steel; deburring and dynamic stress homogenization of die castings; shot peening of components.
Batches of small parts or individual large, heavy workpieces can be processed.
Process
Workpieces are transported into the shot blasting chamber—either manually on rotating hooks or automatically via a suspension rail system. The shot blasting cycle operates according to preset programs and blasting times.
This flexibility is achieved through a number of special product features:
HAI blast wheels provide highly efficient pre-acceleration of the abrasive media, thereby reducing processing times and delivering superior performance and excellent blasting results.
Rotation and station change
To ensure complete coverage, the hooks suspending the workpieces automatically stop and rotate at three positions within the blast chamber. This rotation and positioning process ensures that even highly complex workpieces with hard-to-reach surfaces are treated safely and accurately.
Hook and Crane
The conveyor system is designed to handle various weights. For ease of operation and safety, an integrated chain hoist hook is available as an option.
Features and functional
Standard equipment: Workpieces are transported to the shot blasting chamber manually on a rotating hook or automatically via a suspended track system. The shot blasting cycle runs according to the preset program and shot blasting time.
Shot recovery
To improve the cleaning performance of the media (such as separating flash from aluminum parts), a vibrating screen can be installed between the recovery unit and the hopper.
For foundry/heavy duty applications
A vibrating conveyor can be used instead of a screw conveyor to specifically remove sand and heavy impurities from the used abrasive media. Ideally, the conveyor should be equipped with a magnetic separator (an optional accessory) to remove sand and extend the equipment's service life. The abrasive media then proceeds to the air separator as usual.
Manually operate the track
The rail system features a standard Y-shaped design and is equipped with two manganese steel hooks. Optionally, the rail can be configured with branches or as an oval system to meet specific customer requirements. Workpieces are manually pushed along the hooks to the entrance of the shot blasting machine, from where an automatic conveyor system transports them into the blasting chamber. For particularly heavy workpieces, an automatic conveying unit can be installed along the entire length of the overhead rail system.
Lifting mechanism
Combining the use of hooks and chain hoists—tailored to the specific workpieces and the preceding and subsequent process steps—facilitates the lifting and handling of batches of workpieces or heavy components. Chain hoists are operated directly at the loading and unloading stations of overhead track systems. Another advantage of using lifting equipment for large-scale machinery is that it enables an ergonomic loading and unloading process; without such equipment, machines often have to be installed in a floor pit to lower the position of the workpiece carrier, whereas the use of lifting equipment eliminates the need for a pit.
Technical Specifications
Model
HKD 10/12
HKD 12/16
HKD12/20
HKD16/16
HKD 16/22
HKD 16/26
HKD 20/22
Max workpiece diameter(mm)
1500
2000
2500
3000
3500
4000
5000
Max workpiece height(mm)
1200
1600
2000
1600
2200
2600
2200
Max workpiece weight(kg)
500
1000
2000
3000
5000
8000
15000-2000
No. of shot blasters
3
4
5
6
6
7
8-12
Power of a single shot blasting wheel(kW)
7.5 (11)
7.5 (11)
7.5 (15)
7.5 (15)
7.5 (18.5)
7.5 (22)
7.5 (22)
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.
2Abrasive 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.
3Blasting 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.
6Sorting 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.
7
Electrical 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 requirement.
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.
