
6902, 6902Z, 6902ZZ, 6902RS, 6902-2RS Miniature Ball Bearings 15x28x7mm – Compact Deep Groove Bearings for High-Speed Precision & Light-to-Medium Duty Applications
6902, 6902Z, 6902ZZ, 6902RS, 6902-2RS Miniature Ball Bearings 15x28x7mm – Compact Deep Groove Bearings for High-Speed Precision & Light-to-Medium Duty Applications
High-performance 6902 series deep groove ball bearings in size 15mm (ID) × 28mm (OD) × 7mm (W), designed for compact machinery and light-to-medium duty systems requiring smooth, quiet, and high-speed rotation under radial and moderate axial loads. Available in multiple sealing configurations to suit diverse operating environments:
- 6902: Open type – ideal for clean or controlled settings with custom lubrication
- 6902Z / 6902ZZ (6902-2Z): Single or double metal shields – protect against dust while retaining factory grease
- 6902RS / 6902-2RS: Single or double rubber seals – provide excellent resistance to moisture and fine contaminants
Manufactured from high-grade chrome steel (GCr15) — with stainless steel available on request — these bearings feature precision-ground raceways for low friction, minimal noise, and reliable performance at elevated speeds. Widely used in small electric motors, power tools, agricultural equipment, conveyors, pumps, gearboxes, robotics, 3D printers, and household appliances.
Most sealed variants come pre-lubricated with long-life, low-torque grease for maintenance-free operation. The 6902 series offers a robust balance of compact design, load capacity, and rotational efficiency, making it suitable for both industrial and consumer applications where space is limited but reliability is critical.
🔧 Key Specifications:
- Models: 6902, 6902Z, 6902ZZ (6902-2Z), 6902RS, 6902-2RS
- Dimensions: 15 × 28 × 7 mm
- Material: Chrome Steel (GCr15) – stainless steel optional
- Precision Rating: ABEC-1 (standard); higher grades available
- Ideal for: Light industrial machinery, automation, DIY projects, and precision mechanical systems





