Tire Changer 101: Understanding the Mechanism Behind the Machine

A tire changer, also known as a tire swapper or tire mounting/removing machine, is a common tool in automotive repair, specifically designed for removing tires. It’s very convenient for tire removal. So, what kinds of tire changers are available on the market? Below, we’ll discuss the working principle, structure, performance characteristics, classification, selection tips, and maintenance of tire changers to hopefully answer your questions.

Working principle of the tire-changing machine

The tire changer’s function is to remove and install tires. It mainly consists of a frame, pressure plate, pressure cylinder, support cylinder, traveling trolley, and hydraulic system. Two auxiliary cylinders are parallel to each other on either side of the central cylinder. The pressure plate connects perpendicularly to the central cylinder, while the two auxiliary cylinders connect perpendicularly to the hook slide. The hook slide contains hook tracks. The hydraulic system controls the interaction between the pressure plate and the hook slide to complete the tire removal operation.

The tire changer is highly efficient, adaptable, and does not damage the tire during the removal process. It can be widely used in metallurgical, chemical, coal mining, and water conservancy industries for removing large vehicle tires and rims.

1. Main Workbench: Tires are primarily removed from this platform, which mainly serves to place and rotate the tires.

2. Tire Separation Arm: Located on one side of the tire changer, this arm is mainly used to separate the tire from the rim, facilitating tire removal.

3. Inflation/Deflation Device: This device releases air from the tire to facilitate inflation or removal. It also includes a tire pressure gauge. Typical tires have a pressure of around 2.2 atmospheres (approximately 0.2 MPa).

4. Foot Pedals: Three foot pedal switches are located at the bottom of the tire changer. Their functions are: clockwise/counterclockwise rotation to release the clamping switch, and rim/tire separation switch.

5. Lubricant: This helps with tire removal and installation, reduces damage during the process, and ensures a smoother tire removal and installation process.

6. Compressed Air Inlet

Performance characteristics of a tire changer

1. The tire changer features a wide-range moving gripper, suitable for rim tightening in vehicle modification shops, and can also be used for tire lifting.

2. It has dual-sided mechanical pneumatic auxiliary arms, suitable for various operating methods, and is simple and quick to operate.

3. The working disc can be selected with dual speeds of 7-14 rpm to improve work efficiency.

4. It adopts a pneumatic tilting column design and a push-pull pneumatic automatic locking design.

5. A simple and effective top-inflation device solves the problem of tire inflation difficulties; it is flexible and mobile, can be used with other machines, or can be separated, making it suitable for various tire shops.

Tire changer classification:

1. According to the type of power, tire changers can be divided into two categories: pneumatic tire changers and hydraulic tire changers.

2. According to the type of use, they can be divided into four categories: motorcycle tire changers, construction vehicle tire changers, passenger car tire changers, and truck tire changers.

Tips for choosing a tire changer

1. Housing Structure:

The housing structure completely affects the performance and safety of the tire changer. If the steel plate used for the housing is too thin or the internal bracing structure is unreasonable, the tire changer will be damaged. Therefore, when selecting a tire changer, you should open the side cover of the housing and observe the internal structure. A standard housing should have bracing on both the top and bottom. A simple way to check its quality is by looking at the weight. Careful selection is essential to ensure the equipment will not deform under stress during later use.

2. Motor The power of a motor is generally above 1000W (380V)

Some manufacturers use motors around 800W to reduce costs, but their operational stability is much worse. When purchasing, you can remove the side cover to check the rated power of the motor. The motor should operate with low noise and no obvious vibration, and copper-clad wire should be selected.

3. Gearbox

The gearbox is the reduction device that transmits power in a tire changer. Gearboxes are usually made of special materials or alloys. During transmission, they need to have low noise, good balance, and small clearances. Some small tire changer manufacturers use inferior hard alloy casting gearboxes, which are noisy during operation and have excessive clearances when swaying left and right, affecting normal tire installation and removal, and easily causing scratches on the rims or tires.

4. Large Air Cylinder:

Choose a high-strength aluminum air cylinder. Major manufacturers use cylinders with an inner diameter of 186 or 200 mm and a support lug distance of 70-90 mm. The piston is made entirely of aluminum, with two sealing rubber rings and one sealing ring. High-quality products use aluminum pistons to ensure the tire-changing machine’s tire-scraping pressure and cylinder lifespan. The tire-scraping pressure is 2500 kg. For mid-to-high-end machines, a quick-release valve can be selected to increase tire-scraping speed!

5. Gas distribution valve:

Aluminum or high-strength nylon products should be selected. The joint should use a locking connector to lock the gas pipe. Many small manufacturers use inferior gas distribution valves and plastic quick-connect connectors to save costs. This can lead to pipe bursts and leaks when the gas source pressure is too high, and the service life is short.

6. Small cylinder:

The internal piston must be a high-strength, wear-resistant aluminum piston. Many small manufacturers use plastic or nylon products, which seriously affects the service life. The valves that are distributed from the small cylinder should also be selected with locking structure joints.

7. Wheel hub installation and removal:

A curved design is preferable, as it is less prone to deformation after years of use, ensures smooth tire installation and removal, and protects the rims, tires, and hubs from damage. Inferior wheel hubs have poorly designed curved shapes that can easily scratch the rims and tires, causing unnecessary losses to auto repair shops or tire stores.

 

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Original price was: $7999.00.Current price is: $6999.00.
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Tire changer maintenance

1. Before performing maintenance, disconnect the power and air supply.

2. After each day’s work, thoroughly wipe the machine clean and regularly lubricate all sliding and moving parts.

3. Regularly check the air-water separator and oil mist lubricator. Drain excess water promptly and replenish oil as needed.

4. Ensure the gearbox has sufficient lubricating oil; the oil level is visible through the oil window. Open the plastic cover in the center of the worktable, unscrew the bolt, and add oil through the bolt hole.

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