Office Chair Caster Repair

You can refer to the following steps for repairing office chair casters:

Check the Caster Status

Place the chair upright and ensure that each caster foot is in contact with the ground. Then, invert the chair and carefully inspect each caster foot for signs of damage, such as bending or breakage. Casters may encounter issues due to uneven weight distribution, manufacturing defects, or general wear and tear. Check if the casters are obstructed by foreign objects, such as small pieces of paper, hair, or dust particles, which may get stuck between the casters and the chair frame. If so, use tweezers or other small tools to remove them. Observe the degree of wear on the casters. If the surface is excessively smooth or there are visible cracks or damage, it may be due to aging or quality problems, and the casters will need to be replaced.

Clean the Casters

Prepare cleaning tools such as a clean cloth and a small brush. Use the cloth to wipe the surface of the casters to remove dust and stains, and then use the small brush to gently scrub the gaps in the casters to ensure no residue remains. If the internal grease of the casters has dried up, causing poor rotation, drip a few drops of lubricating oil onto the caster axle, rotate the casters to evenly distribute the lubricating oil, and reduce friction. You can also apply a small amount of spray lubricant, such as WD-40, to each chair base socket. Insert the straw into the spray nozzle and quickly spray into each socket for about half a second. If you don't have spray lubricant, you can apply a pea-sized amount of petroleum jelly to the axle of each caster.

Replace the Casters

If you find damaged casters, it is difficult to purchase a single replacement caster foot. It is recommended to buy a new set of matching casters. You can contact the chair manufacturer and provide the chair model to order matching caster feet. Alternatively, after removing the old casters, take one of them to an office supplies store to find a matching replacement set, paying attention to matching the shape and size of the caster axle. Determine the model and size of the casters. Generally, office chair casters have specific specifications. You can check the chair manual or search for the relevant model online. When replacing, invert the chair, hold the wheel of the caster with one hand, and hold the bottom of the chair with the other hand and pull firmly. The caster may pop out. If you cannot pull out the caster foot by hand, insert the blade of a flat-head screwdriver into the small gap between the caster foot and the chair contact point, and use it as a lever to slowly operate back and forth to pull the caster rod out of the chair socket by about 1 centimeter, and then pull again. In rare cases, the casters are fixed to the bottom of the chair with screws. When you see the screw head, use a screwdriver to loosen the screw and remove the caster. Install the new casters by aligning the caster rod with the intended base, and gently push with your hand. If it is not in place, gently tap the caster with a rubber mallet until the rod is fully inserted into the base. If the caster design allows, tap near the base of the stem rather than the bottom of the wheel to reduce the risk of deformation or breakage of the new caster. After installation, rotate the casters to check if they can rotate normally and are not loose or wobbly.

Check Other Components

Check the axis of the swivel chair. It may be that the lack of oil in the axis is causing poor rotation. Use a syringe or an oil pot to inject an appropriate amount of lubricating oil, such as sewing machine oil, into the axis. After injection, rotate the swivel chair to allow the oil to fully lubricate the inside of the axis. Check all the screws and other connecting parts. If the screws are loose, use a screwdriver to tighten them, but be careful not to overtighten to avoid damaging the parts. Observe whether the gas rod is bent or deformed. If there are problems, you may need to contact a professional repair person or replace it with a new gas rod. Improper self-handling may pose safety risks.