6004-2RS Sealed Ball Bearings 100 Pack, Lubricated Chrome Steel 20x42x12mm, High RPM Support with Dual Rubber Seals for Motors, Gearboxes, Linear Slide Units and Machinery

100 Pack 6004-2RS Sealed Ball Bearings 20x42x12mm
✔️ Lubricated chrome steel bearings, dual rubber seals, high RPM support

These are sealed, lubricated chrome steel ball bearings sold as a 100 pack, built for high RPM and tough use in motors, gearboxes and linear slide units.

✅ Model: 6004-2RS (sealed both sides)
✅ Dimensions: 20x42x12mm
✅ Material: Chrome steel, pre-lubricated for long life
✅ Seal: Dual rubber 2RS keeps out dust and moisture
✅ Pack size: 100 bearings per pack, ready for jobs
✅ Performance: High RPM support for motors and spindles
✅ Fits: Gearboxes, electric motors, linear slide unit applications

💡 What is a sealed ball bearing used for in motors, gearboxes, and linear slide units? Sealed ball bearings cut maintenance by keeping grease in and contaminants out so shafts keep spinning smooth under load. Here are common uses and benefits: - Good for electric motors that run fast and need low upkeep - Helps gearboxes and drives handle high RPM and shock loads with chrome steel durability - Suits linear slide units and small machinery where sealed lubrication prevents contamination