72Pcs High Carbon Steel Bearing Set In 6 Sizes Deep Groove Ball Bearings 693ZZ 623ZZ 624ZZ 685ZZ 687ZZ 627ZZ Double Shielded Mini Bearings For Machinery Carts Strollers DIY Projects Ideal For Gearheads And Makers

72-Piece High Carbon Steel Bearing Set in 6 Sizes
✔️ Deep-groove, pre-lubricated bearings in 6 sizes, 72 pcs

This 72-piece deep groove ball bearing set provides six sizes (693ZZ, 623ZZ, 624ZZ, 685ZZ, 687ZZ, 627ZZ) in a compact plastic box, making it ideal for DIY projects, hobbyists, carts, strollers, and light machinery where smooth rotation and durability matter.

✅ 12Pcs per size across 6 sizes: 3x8x4mm, 3x10x4mm, 4x13x5mm, 5x11x5mm, 7x14x5mm, 7x22x7mm (693ZZ, 623ZZ, 624ZZ, 685ZZ, 687ZZ, 627ZZ)
✅ Inner bore tolerance ±0.05 mm
✅ High-carbon steel construction for strength and wear resistance
✅ Pre-lubricated to reduce friction and extend life
✅ Speed rating below 1000 RPM for mid-to-low speed use
✅ Comes in a sturdy plastic box for easy storage and transport

💡 What is a deep groove bearing set used for in hobby and light machinery?

Handy option for adding reliable rotation in everyday projects and small equipment.

- Great for replacing worn bearings in toy cars, carts, and strollers - Helps in low-to-moderate speed assemblies with reduced noise - Pre-lubricated design lowers maintenance and downtime - High-carbon steel construction resists wear and vibration