Groove geometry is one of the most important design details in a water-lubricated bearing because it affects water flow, cooling, debris discharge and hydrodynamic support.

Flow, Cooling and Debris Discharge

During operation, water must enter the bearing clearance, remove heat and carry away sand or fine particles. Straight grooves, spiral grooves and segmented structures can each be used depending on shaft speed, load, installation direction and water condition.

A suitable groove design helps reduce dry friction risk during start-up and improves operating stability once the shaft reaches working speed.

• Improved water distribution along the bearing surface
• Better heat removal under continuous operation
• Support for sand or particle discharge
• Potential reduction of local wear under mixed lubrication

Matching the Structure to the Application

There is no single groove pattern that fits every application. A vessel shaft, a pump shaft and an underwater device may require different compromises between load capacity, water flow and installation constraints.

WAVE TECH reviews the operating condition first, then recommends a bearing form, groove type and material direction for the project.

See a marine water-lubricated bearing example