Sealed Ball Bearing 30x55x9 mm With Dual Blue Rubber Seals, Pre-Lubricated Grease, 52100 Alloy Steel For Precision Machinery, Industrial Applications, And Hobby Projects, Dust And Contaminant Protection, Reliable Performance In High Load And Continuous

High-accuracy sealed ball bearing 30x55x9mm ready to roll
✔️ 30 x 55 x 9 mm sealed, pre-lubed, 1 pc pack

This compact sealed ball bearing is designed for small, dust-prone applications and comes pre-lubricated for immediate use. It’s a great fit for hobby gear, RC toys, small motors, and light machinery where reliable rotation in tight spaces matters.

✅ Inner diameter 30 mm, outer diameter 55 mm, width 9 mm
✅ 2 blue rubber seals for dust protection and contamination resistance
✅ Made from 52100 alloy steel (chrome steel) with deep groove design
✅ Pre-lubricated with grease for ready-to-run performance
✅ Dynamic load rating Cr 9,950 N; static load rating Cor 6,550 N; max speed 13,000 RPM

💡 What is a sealed ball bearing used for in compact hobby machines?

These handy bearings fit tight spaces and keep dust out while staying lubricated.

• Handy for RC cars, drones, small electric motors, and compact gearboxes
• Sealed design reduces maintenance and downtime in dusty work areas
• Grease lubrication ensures quick setup and consistent performance
• Footprint 30x55x9 mm fits common small-bearing housings