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NTN NU203

Cylindrical Roller Bearing

In StockPOA
ISO 9001 Certified Authorised UK Distributor
NTN NU203 Cylindrical Roller Bearing
NTN/SNR
NTN/SNR logo

NTN NU203 - Cylindrical Roller bearing - ID 17 OD 40 W 12mm

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Found it cheaper elsewhere? We’ll match any UK competitor’s price on bearings in stock — call us before you buy.

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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
Weight68kg

Product Details

Part NumberNTN NU203
BrandNTN/SNR
Bearing TypeCylindrical Roller Bearing
Seal TypeOpen
Stock StatusIn Stock

Technical Datasheet

Download full specifications for NTN NU203 — dimensions, load ratings, and material data.

NTN/SNR Technical Resources

Bearings Catalogue
No cross-reference part numbers are recorded for NTN NU203. Ask our team for equivalent part numbers.
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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.

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Frequently Asked Questions

What is a NTN NU203 bearing?

The NTN 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 NTN NU203 dimensions?

The NTN 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.

Is the NTN NU203 in stock?

The NTN 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.

NJ203ECM Cylindrical Roller Bearing
NJ203ECM
ISB logo
POAPrice Match
Bore
17
OD
40
Width
12
SealOpen
ISB 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.
In Stock
NJ203ECP Cylindrical Roller Bearing
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ISB logo
POAPrice Match
Bore
17
OD
40
Width
12
SealOpen
ISB 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.
In Stock
NJ2203ECP Cylindrical Roller Bearing
NJ2203ECP
ISB logo
POAPrice Match
Bore
17
OD
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Width
12
SealOpen
ISB 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.
In Stock
NU203 Cylindrical Roller Bearing
NU203
NTN/SNR logo
POAPrice Match
Bore
17
OD
40
Width
12
SealOpen
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.
In Stock

Related Parts — Seals & Bushings

Matching seals and bushings for 17mm shaft diameter — complementary components for your bearing.

17X25X4 R21 Seals
17X25X4 R21
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OD
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Width
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SealOpen
Unclassified Seals with Open seals. A versatile bearing suitable for a range of mechanical applications. 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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Unclassified Seals with Open seals. A versatile bearing suitable for a range of mechanical applications. 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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17X27X7 R23 Seals
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17X28X7 R23 Seals
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Width
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Unclassified Seals with Open seals. A versatile bearing suitable for a range of mechanical applications. 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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