NBC BEARING 6202 BB-19
The NBC 6202 BB-19 is a standard Deep Groove Ball Bearing manufactured by National Engineering Industries Ltd. (NBC), India's leading bearing producer.
This bearing is defined by the common ISO standard for its dimensions and features additional suffixes specific to NBC's product line.
1. Bearing Designation Breakdown
| Designation Part | Meaning | Detail |
| 6202 | Basic Bearing Number | Single-row Deep Groove Ball Bearing, Light series. |
| BB | Sealing/Shielding | Most commonly indicates Sealed on Both Sides with a rubber lip seal (equivalent to 2RS, LLU, or DD), meaning it is pre-lubricated with grease and protected from contaminants. |
2. Key Dimensions (Standard 6202)
The dimensions of the 6202 bearing are internationally standardized:
| Dimension | Abbreviation | Value (Metric) | Value (Imperial) |
| Inner Diameter (Bore) | $d$ | 15 mm | $\approx 0.5906$ in |
| Outer Diameter | $D$ | 35 mm | $\approx 1.3780$ in |
| Width | $B$ | 11 mm | $\approx 0.4331$ in |
3. Typical Performance Ratings
These values are approximate for a standard 6202 bearing:
Basic Dynamic Load Rating ($C$): $\approx 7.6 - 8.6\text{ kN}$ (Capacity for rotating loads).
Basic Static Load Rating ($C_0$): $\approx 3.6 - 3.75\text{ kN}$ (Capacity for stationary loads).
Limiting Speed (Grease): $\approx 18,000 - 19,000\text{ rpm}$
4. Common Applications
The 6202 size is extremely common and is widely used in:
Automotive/Two-Wheelers: Used in crankcases, wheel hubs, transmission shafts (e.g., Honda Activa, various scooters and motorcycles).
Electric Motors
Pumps and Fans
General Industrial Machinery