If a basket centrifuge is vibrating excessively during normal operation the operator should inspect the ___ first

• A. Drive belt
• B. Casing
• C. Bearings
• D. Impeller

Answer: (C)

Excessive vibration in a rotating basket centrifuge almost always points to the bearings first. The bearings provide the radial support and stiffness that keep the rotor running smoothly; when they wear, lose lubrication, or develop excessive clearance or damage, the rotor can’t maintain proper alignment and the vibration rises quickly. Start by inspecting the bearings: feel for smooth, free rotation, listen for roughness or grinding, check for any looseness in the bearing housing, and look for signs of overheating, leakage, or contamination in the lubricant. Check the lubricant level and condition, and ensure seals and mounts are intact and secure. If the bearings seem serviceable, then broaden the check to other parts such as the drive belt, the casing, or the impeller, but bearing condition is the most likely first cause to verify.