A: Consider load type (radial/axial), speed, space, and environment. For example, deep groove ball bearings suit radial loads and high speeds, while tapered roller bearings handle combined loads. Provide your specs for expert advice.

A: Basic rating life (L₁₀) is the life 90% of identical bearings achieve under standard conditions. Actual life depends on lubrication, contamination, installation, and temperature—often varying significantly from L₁₀.

A: Keep everything clean, use proper fits (avoid hammering), heat ≤120°C if needed, and ensure shaft/housing alignment. Incorrect mounting is a leading cause of early failure.

A: No—over-greasing causes overheating. Fill 1/3 to 1/2 of the free space inside the bearing. Sealed bearings come pre-lubricated and usually need no extra grease.