Inline Skate Bearings

Bearing cages hold the balls in place. Delrin or nylon cages are lightweight and absorb vibration, good for high-speed and aggressive skating. Metal cages, often brass, offer greater durability and heat resistance, useful for long-distance skaters who generate more friction heat.

Spin the wheels by hand; if they make grinding noises, wobble or stop quickly, the bearings may be worn. Visually inspect for rust or dented shields. Excess play between the axle and bearing indicates that the inner race or axle may be worn.

Aggressive skaters benefit from bearings with sealed or semi-sealed designs that keep out dirt and water. These bearings require less frequent cleaning and lubrication, which is ideal when skating at skateparks or street spots where dust and grit abound.

Yes, but within limits. High-precision bearings reduce friction and roll longer. For speed skating, choosing bearings designed for high rotational speeds helps maintain momentum. However, factors like wheel hardness, frame alignment and skating technique also significantly influence speed.

Use a light oil for racing or fitness skating to reduce resistance. For aggressive skating, a medium-viscosity lubricant can help protect bearings from impacts and dirt. Avoid heavy grease in speed skating, as it impedes rotation.

Mixing different bearing brands or types is not recommended, as it may create uneven wheel spin and affect balance. If you need to replace a bearing in one wheel, use the same type and brand to maintain consistency.

Micro bearings have a smaller inner diameter (6 mm) and outer diameter than standard bearings, making them lighter. They spin faster, making them popular in speed skating. However, they’re less robust under side loads and require specialized spacers and axles.

Yes. Stainless steel bearings resist rust better than standard steel. They are heavier and often have slightly higher friction, but they’re ideal for wet environments or coastal areas where corrosion is a concern.