Table Type Shot Blasting Machine: Structure, Working Principle, Suitable Workpieces & Selection Guide
The table type shot blasting machine (rotary table shot blasting machine) carries workpieces on a rotating turntable while multiple blast wheels hurl steel shots at high speed from different angles, continuously striking the workpiece surfaces to remove rust, mill scale, weld slag and burrs, with surface stress peening also available. Its key feature: workpieces rotate in place with the turntable and never tumble or collide with each other — making it the ideal choice for single, medium-to-large, heavier parts that cannot tolerate impact, widely used for pre-painting cleaning and derusting in construction machinery, die & mold, valve, and auto parts industries.
1. Table Type Shot Blasting Machine Structure
A table type shot blasting machine (also called a rotary table shot blasting cleaning machine) consists of a cleaning chamber, rotating turntable, blast wheels, media recycling system, air-wash separator, dust collection system and drive & protection devices. All components work together to remove rust, mill scale and burrs and to strengthen surfaces:
- Cleaning chamber housing: A sealed welded steel plate box that prevents steel shot from flying out, with wear-resistant protective liners inside to withstand long-term shot impact and extend machine life.
- Rotating turntable: The core of the machine, available in single-table and twin-station configurations (one station cleaning, one station loading/unloading); variable frequency speed control with forward and reverse rotation; workpieces and fixtures are fixed on the turntable surface.
- Blast wheel units: Mounted on the chamber side walls / top, multiple blast wheels arranged at different angles deliver directed steel shot streams covering all workpiece faces.
- Media recycling system: A bottom collecting hopper + screw conveyor + bucket elevator continuously convey steel shots to the top air-wash separator.
- Air-wash separator: Screens reusable shots, broken shots and oxide impurities; qualified shots are re-supplied to the blast wheels.
- Dust collection system: A cartridge dust collector collects dust generated during cleaning for compliant emission.
- Drive & protection: Turntable reduction drive, sealed door and safety interlock system — the machine stops automatically when the door is opened to ensure operator safety.
2. Working Principle of the Table Type Shot Blasting Machine
Workpieces are fixed on the turntable fixture frames, and the chamber door is closed. The turntable drives the workpieces to rotate slowly at a uniform speed, while multiple blast wheels hurl steel shots at high speed from different directions, continuously striking the workpiece surfaces to remove rust, mill scale, weld slag and burrs, while enabling surface stress peening that improves fatigue strength.
Steel shots and rust debris fall to the bottom of the machine, where a screw conveyor collects them and a bucket elevator lifts them to the air-wash separator at the top. The separator removes waste from reusable shots; clean shots are recycled, and dust is collected by the dust collection system.
Working Process of the Table Type Shot Blasting Machine
Workpiece Fixturing
Workpieces are fixed on the turntable fixture frames / fixtures
Table Rotation
The turntable rotates workpieces slowly at a uniform speed, in place
Shot Blasting
Multiple blast wheels hurl steel shots from different angles, removing rust, mill scale, weld slag and burrs
Media Recycling
Screw conveyor + bucket elevator feed the air-wash separator; qualified shots are recycled
Dust Collection
Dust is collected by the cartridge dust collector for compliant emission
Advantages of the Twin-Station Table Type Shot Blasting Machine
The twin-station model is configured with two stations: one station runs shot blasting inside the chamber while the other loads and unloads workpieces outside the chamber door. Cleaning and loading/unloading proceed simultaneously without interrupting production, greatly improving machine utilization and overall efficiency.
3. Factories That Use the Table Type Shot Blasting Machine
The table type shot blasting machine suits single, medium-to-large, heavier workpieces that cannot tolerate impact, especially in multi-variety small-batch production. Typical applications include:
- Construction machinery parts plants: derusting gears, housings and pump bodies and pre-painting treatment.
- Die & mold workshops: removing mill scale from die cavities and die bases, and surface strengthening.
- Pressure vessel / valve manufacturers: surface cleaning of valve housings and valve bodies.
- Auto parts factories: cleaning auto housings, wheel hubs and transmission housings.
- Wind power and mining machinery processors: cleaning small-to-medium heavy structural parts.
- Foundries: sand cleaning of large and medium single castings and removing sprue flash.
Selection tip: for high-volume loose small parts, choose a drum type shot blasting machine or a crawler type shot blasting machine; for large workpieces requiring suspended cleaning, choose a hook type shot blasting machine; for high-volume pipes and profiles, choose a through type shot blasting machine. For impact-sensitive medium-to-large single parts whose surfaces must be protected, the table type shot blasting machine is the priority choice.
4. Comparison with Wheelabrator, Pangborn & Sinto
In terms of quality, the table type shot blasting machine matches international first-tier brands — Wheelabrator (Germany), Pangborn (USA) and Sinto (Japan) — with comparable quality and a much more competitive price:
| Comparison | Wheelabrator / Pangborn / Sinto | Dingtian · Table Type Shot Blasting Machine |
|---|---|---|
| Overall quality | International first-tier brands with mature process | Comparable quality: blast wheels, wear-resistant liners and assembly process benchmarked to imported level |
| Machine price | Original imported brand pricing | About one-fifth of the imported brands’ price, significantly reducing the initial investment |
| Wear & consumable parts | Higher original spare parts pricing | Spare parts at about one-tenth of the above three companies, greatly reducing long-term operating costs |
| Spare parts supply | Depends on imported original parts | Custom production of wear & consumable parts for the above three companies, at about one-tenth of the original parts price |
By choosing the table type shot blasting machine, the machine price is about one-fifth of Wheelabrator, Pangborn and Sinto, and wear & consumable parts are about one-tenth of the above three companies, greatly reducing long-term operating costs. We can also provide custom production of wear & consumable parts for these three companies at about one-tenth of the original parts price, helping customers achieve better overall value without compromising quality.
5. FAQ – Suitable & Unsuitable Workpieces
To help you select quickly, here are the most common questions about suitable and unsuitable workpieces for the table type shot blasting machine.
- Various small-to-medium heavy castings, cast steel parts and cast iron housings;
- Forgings, dies, die bases, gears, valve bodies and pump bodies;
- Engineering machinery housings, auto transmission housings and wheel hub parts;
- Welded structures: removing weld slag and mill scale for pre-painting treatment;
- Heat-treated workpieces: removing mill scale and shot peening for higher fatigue strength.
- Thin-wall and sheet parts: the impact force of steel shots can easily deform them;
- Small loose parts without support: without fixtures, the shots can blow them away and drop them inside the machine;
- Ultra-high-precision polished finished parts: shot blasting changes surface finish and causes pitting;
- Oversized or overlong workpieces: they cannot be clamped within the chamber and turntable diameter limits;
- Brittle fragile parts: impact can cause cracking and breakage.
6. More Machines – Live Working Videos
Watch more shot blasting machines working live on our social media channels:
7. More Shot Blasting Machines & Surface Cleaning Equipment
We offer a full range of shot blasting equipment covering different workpiece shapes and capacity needs: