B&G WS300 MHU Speed Bearing

Why Your WS300 Wind Sensor Needs a Reliable Speed Bearing

In the demanding world of sailing, precise wind data is your edge on the water. The WS300 MHU Speed Bearing plays a crucial role in keeping your WS310 or WS320 wind sensor spinning smoothly and accurately. Over time, exposure to salt spray, UV rays, and constant rotation can wear down the bearing, leading to erratic readings or complete failure. Replacing it restores like-new performance, ensuring your boat's instruments deliver trustworthy wind speed data during every tack and gybe.

This genuine replacement part is engineered for marine environments, with materials that resist corrosion and friction. Sailors who've swapped it out report crisper cup rotation and more consistent anemometer feedback, which translates to better sail trim and faster passages. Whether you're racing competitively or cruising long distances, maintaining this small but vital component keeps your setup reliable.

Signs It's Time for a Replacement

Spotting wear early prevents bigger issues. Watch for these common indicators:

• Inaccurate speed readings: Cups hesitate or spin unevenly, throwing off true wind calculations.
• Noisy operation: Grinding or rattling sounds from the sensor head signal bearing degradation.
• Sluggish response: Delayed reaction to gusts, especially noticeable in light airs.
• Visual cues: Inspect for play in the shaft, discoloration, or buildup around the bearing housing.

Regular checks during your seasonal service routine can extend the life of your entire wind system. A fresh bearing not only boosts accuracy but also reduces strain on connected electronics like your chartplotter or autopilot.

Seamless Compatibility and Fit

Designed specifically for the WS300 series, this MHU speed bearing drops in without modifications. It fits both the WS310 and WS320 models, making it a go-to spare for fleets or multi-boat owners. The precision machining ensures minimal downtime—most swaps take under 30 minutes with basic tools, getting you back on the water fast.

Pro tip: While servicing, clean the cup assembly and shaft thoroughly. A lubricated, debris-free environment maximizes the bearing's longevity, potentially lasting seasons longer in harsh conditions.

Enhancing Your Sailing Instrumentation

Beyond replacement, investing in quality bearings like this one supports the full ecosystem of your B&G instruments. Accurate wind speed feeds into apparent wind angles, true wind speed, and even polar performance data, helping you optimize VMC (Velocity Made Good) on upwind legs. Skip the guesswork and sail smarter with components built to handle the rigors of offshore racing or coastal adventures.

"Switched out the bearing on my WS320 before a coastal series—wind data was spot-on all weekend. No more second-guessing the instruments." – Experienced racer feedback.