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NU203
Cylindrical Roller Bearing
NU203
Cylindrical Roller Bearing
NTN Cylindrical Roller Bearing with Open seals measuring 17mm bore × 40mm outer diameter × 12mm 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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NTN Cylindrical Roller Bearing with Open seals measuring 17mm bore × 40mm outer diameter × 12mm 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) | 17mm |
| Outer Diameter (D) | 40mm |
| Width (B) | 12mm |
NU203
Cylindrical Roller Bearing
Technical Specifications
| Part Number | NU203 |
| Brand | NTN/SNR |
| Bearing Type | Cylindrical Roller Bearing |
| Seal Type | Open |
| Material | Chrome Steel (SAE 52100) |
| Cross-Reference | NU203ECM, NU203ETVP2 |
| Bore (Inner Diameter) | 17 mm |
| Outer Diameter | 40 mm |
| Width / Thickness | 12 mm |
Enquire About the NTN/SNR NU203
Get a competitive quote within 24 hours — no obligation. Our engineering team can help with specifications, cross-references, and volume pricing.
Technical Datasheet
Download full specifications for NU203 — dimensions, load ratings, and material data.
NTN/SNR Technical Resources
Equivalent part numbers from other manufacturers that can be used as direct replacements for NU203.
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 NTN/SNR NU203
The NTN/SNR NU203, is a cylindrical roller bearing, in an open configuration for maximum speed and easy relubrication, featuring a 17mm bore, 40mm outer diameter, and 12mm width, manufactured from chrome steel (sae 52100), and is in stock at Buy Bearings.
NTN Cylindrical Roller Bearing with Open seals measuring 17mm bore × 40mm outer diameter × 12mm 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 NU203 cylindrical roller bearing is specified with 17mm bore (inner diameter), 40mm outer diameter, 12mm 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 NU203 from Buy Bearings?
- UK-authorised distributor with genuine NTN/SNR 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 NU203 bearing?
The NU203 is a NTN/SNR Cylindrical Roller Bearing with a 17mm bore, 40mm outer diameter and 12mm width. It is In Stock at Buy Bearings.
What are the NU203 dimensions?
The NU203 measures 17mm bore (inner diameter) × 40mm outer diameter × 12mm 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 NU203 cross-reference?
The NU203 is interchangeable with NU203ECM, NU203ETVP2. Contact our team to confirm an exact equivalent for your application.
Is the NU203 in stock?
The NU203 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 17mm shaft diameter — complementary components for your bearing.
