The NBC 6305 Ball Bearing is a precision-engineered bearing designed to support rotating shafts and accommodate radial loads, along with axial loads in both directions.
Manufactured by NBC Bearings (National Engineering Industries), this deep-groove ball bearing is suitable for mechanical applications requiring the 6305 bearing size and specification.
NBC’s two-wheeler catalogue lists the related 6305C3 bearing for the crankshaft, clutch side, on certain older Royal Enfield Electra 350 and Bullet 500 models. The standard 6305 and 6305C3 have different internal-clearance specifications, so they should not automatically be treated as interchangeable.
Before purchasing, check the complete bearing number printed on your original bearing and confirm the required internal clearance.
Key Features
- Brand: NBC Bearings
- Bearing Number: 6305
- Bearing Type: Single-Row Deep-Groove Ball Bearing
- Inner Diameter: 25 mm
- Outer Diameter: 62 mm
- Width: 17 mm
- Designed to support radial loads and some axial loads
- Suitable for compatible mechanical and shaft applications
- Manufactured by National Engineering Industries Ltd.
Compatibility
Royal Enfield engine applications — exact fitment must be verified.
NBC’s two-wheeler catalogue lists 6305C3 for the crankshaft, clutch side, on certain older models, including:
- Royal Enfield Electra 350
- Royal Enfield Bullet 500
Important: These catalogue applications refer to 6305C3, not necessarily the standard 6305 bearing. Confirm the complete bearing number, internal clearance and engine variant before ordering. Compatibility with other Royal Enfield models is not assumed.
Product Specifications
| Specification | Details |
|---|---|
| Brand | NBC Bearings |
| Bearing Number | 6305 |
| Bearing Type | Deep-Groove Ball Bearing |
| Inner Diameter | 25 mm |
| Outer Diameter | 62 mm |
| Width | 17 mm |
| Internal Clearance | Verify actual bearing marking |
| Application | Compatible shaft and engine assemblies |
Package Contents
- 1 × NBC 6305 Bearing
Installation
Professional installation is recommended. Confirm the bearing designation, internal clearance, shaft fit and lubrication requirements before installation. Use the bearing specification required by the motorcycle manufacturer.
Buy Now – EAZ Store
Looking for an NBC bearing for your Royal Enfield?
Shop online at www.enfieldandactivazone.com for motorcycle spare parts and accessories from EAZ Store – Enfield and Activa Zone.
Check your original bearing number and motorcycle application before placing your order.











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