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NJ321W
Cylindrical Roller Bearing
NJ321W
Cylindrical Roller Bearing
NSK Cylindrical Roller Bearing with Open seals measuring 105mm bore × 225mm outer diameter × 49mm width. Built for heavy radial loads in gearboxes, conveyors and industrial drives. Manufactured from Chrome Steel (SAE 52100) for durability and long service life. In Stock at Buy Bearings. Order by 1pm for next-day UK dispatch.
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NSK Cylindrical Roller Bearing with Open seals measuring 105mm bore × 225mm outer diameter × 49mm width. Built for heavy radial loads in gearboxes, conveyors and industrial drives. Manufactured from Chrome Steel (SAE 52100) for durability and long service life. In Stock at Buy Bearings. Order by 1pm for next-day UK dispatch.
Price Match Promise
Found it cheaper elsewhere? We’ll match any UK competitor’s price on bearings in stock — call us before you buy.
Technical Dimensions & Load Ratings
Confirm these values match your shaft, housing and application requirements before ordering.
Dimensions
| Bore Diameter (d) | 105mm |
| Outer Diameter (D) | 225mm |
| Width (B) | 49mm |
NJ321W
Cylindrical Roller Bearing
Technical Specifications
| Part Number | NJ321W |
| Brand | NSK |
| Bearing Type | Cylindrical Roller Bearing |
| Seal Type | Open |
| Material | Chrome Steel (SAE 52100) |
| Cross-Reference | NJ321ECM |
| Bore (Inner Diameter) | 105 mm |
| Outer Diameter | 225 mm |
| Width / Thickness | 49 mm |
Enquire About the NSK NJ321W
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Technical Datasheet
Download full specifications for NJ321W — dimensions, load ratings, and material data.
NSK Technical Resources
Equivalent part numbers from other manufacturers that can be used as direct replacements for NJ321W.
Engineering support
Our experienced MRO products specialists are on hand to offer practical solutions to your problems and can assist with an on-site visit.
Call us01709 878282
About the NSK NJ321W
The NSK NJ321W, is a cylindrical roller bearing, in an open configuration for maximum speed and easy relubrication, featuring a 105mm bore, 225mm outer diameter, and 49mm width, manufactured from chrome steel (sae 52100), and is in stock at Buy Bearings.
NSK Cylindrical Roller Bearing with Open seals measuring 105mm bore × 225mm outer diameter × 49mm width. Built for heavy radial loads in gearboxes, conveyors and industrial drives. Manufactured from Chrome Steel (SAE 52100) for durability and long service life. In Stock at Buy Bearings. Order by 1pm for next-day UK dispatch.
Key Specifications
The NJ321W cylindrical roller bearing is specified with 105mm bore (inner diameter), 225mm outer diameter, 49mm width. The Open sealing arrangement protects against contamination and retains lubricant for extended service life. The chrome steel (sae 52100) construction provides excellent wear resistance and durability in demanding operating conditions.
Common Applications
Cylindrical Roller Bearings are commonly used in:
About Cylindrical Roller Bearings
Cylindrical roller bearings use cylindrical rollers to handle high radial loads. They are suitable for high-speed applications and can accommodate axial displacement of the shaft relative to the housing.
Why Buy the NJ321W from Buy Bearings?
- UK-authorised distributor with genuine NSK products
- Expert technical support from our engineering team
- Competitive pricing with fast UK dispatch
- Full technical datasheet and cross-reference support
- 30-day returns on standard products
Frequently Asked Questions
What is a NJ321W bearing?
The NJ321W is a NSK Cylindrical Roller Bearing with a 105mm bore, 225mm outer diameter and 49mm width. It is In Stock at Buy Bearings.
What are the NJ321W dimensions?
The NJ321W measures 105mm bore (inner diameter) × 225mm outer diameter × 49mm width.
What does Open mean on a bearing?
Open bearings have no seals or shields, allowing maximum speed and easy relubrication — best for clean, lubricated environments.
What is the NJ321W cross-reference?
The NJ321W is interchangeable with NJ321ECM. Contact our team to confirm an exact equivalent for your application.
Is the NJ321W in stock?
The NJ321W is In Stock at Buy Bearings. Submit an enquiry or call our sales team for current stock and pricing (POA).
Related & Compatible Bearings
Same cylindrical roller bearing, closest dimensions first — useful if you need a slightly different size or this part is unavailable.
Related Parts — Seals & Bushings
Matching seals and bushings for 105mm shaft diameter — complementary components for your bearing.
