Ten Piece Set Of 6905 2RS Ball Bearings 25x42x9mm Thin Section Double Rubber Sealed Pre Lubricated Chrome Steel Bearing For Bicycle Bottom Brackets Wheel Hubs And Robotics

Ten Piece 6905-2RS Thin Section Bearings 25x42x9mm - Sealed
✔️ 25mm bore x 42mm OD x 9mm wide; 2RS seals; chrome steel

These ten-piece 6905-2RS ball bearings are engineered for tight spaces and high-load cycling components. They are a precise replacement for bicycle bottom brackets, wheel hubs, and robotics that use a 25mm spindle.

✅ Double-sided 2RS seals protect the internal parts from dirt and moisture
✅ Dynamic radial load ~7000 N; static radial load ~4500 N
✅ ABEC-3 grade chrome steel bearing for durability and smooth rotation
✅ 25mm bore, 42mm OD, 9mm width; pre-lubricated
✅ Max speed up to 19000 rpm for fast, quiet operation

💡 What is a 6905-2RS ball bearing used for in bicycles and robotics?

In a nutshell, it's a compact sealed bearing designed for smooth rotation in tight spaces.

• Commonly used in bicycle bottom brackets, wheel hubs, and other 25mm spindle applications
• Ideal for hollow-shaft robotics and small motors where wiring passes through
• 2RS seals keep lubricant in and contaminants out for long life