Description
This equipment features a central turntable with self-centering jaws to clamp the wheel securely from the outside or inside of the rim. The main components include a powerful bead breaker arm (typically pneumatic), the clamping turntable, and a swing arm assembly that holds the mount/demount tool head. The “semi-automatic” designation means the operator manually swings the post and locks the mounting head into the working position, and then relies on electric power for the turntable rotation and pneumatic power for the bead breaker.
Key Features
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Swing-Arm Design: The mounting post swings laterally to clear the table, providing a more compact footprint than a fully automatic tilt-back model.
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Pneumatic Bead Breaker: A powerful side-mounted cylinder and shovel system easily breaks the tire bead from the rim.
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Self-Centering Turntable Jaws: Four jaws clamp the wheel accurately and securely, accommodating a wide range of wheel diameters.
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Rim Protection: The mounting head and jaws often include plastic/nylon protectors to prevent marring and scratching of delicate alloy wheels.
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Foot Pedal Control: Multiple foot pedals provide hands-free control for clamping, turntable rotation (clockwise/counter-clockwise), and bead breaker operation.
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Air Regulator/Lubricator: Includes an air filtration and lubrication unit to ensure the pneumatic components operate reliably and last longer.
Technical Specifications (Typical for Semi-Automatic Models)
| Feature | Detail |
| Rim Clamping Range (External) | 10″ to 22″ (inches) |
| Rim Clamping Range (Internal) | 12″ to 24″ (inches) |
| Max Wheel Diameter | 38″ to 43″ (approx. $960 – 1100$ mm) |
| Max Wheel Width | 12″ to 15″ (approx. $300 – 380$ mm) |
| Bead Breaking Force | 5,500 lbs (approx. $2,500$ kg) |
| Power Supply | 110V or 220V Single-Phase |
| Motor Power | 0.75 kW to 1.1 kW (1 HP to 1.5 HP) |
| Operating Air Pressure | 8 – 10 Bar (116 – 145 PSI) |
| Noise Level | $<70$ dB |
Best Uses
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Standard Passenger Car Service: Perfect for the bulk of regular tire changes on sedans, crossovers, and minivans.
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Light Truck Tires: Capable of handling most standard light truck and SUV tires within its clamping range.
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Tire Repairs: Ideal for removing and remounting a tire for puncture repair.
Best For
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Small to Medium-Sized Auto Repair Shops: Provides necessary capability without the higher cost of a fully automatic machine.
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Dedicated Tire Service Centers: Suitable for secondary bays or moderate volume shops.
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Home/Hobby Garages: Excellent choice for serious automotive enthusiasts who frequently change tires and have an adequate air compressor.
