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NA4903
Needle Roller Bearing
NA4903
Needle Roller Bearing
IKO NA4903 needle roller bearing with inner ring, 17x30x13mm. Suitable for gearbox and pump applications.
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IKO NA4903 needle roller bearing with inner ring, 17x30x13mm. Suitable for gearbox and pump applications.
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) | 30mm |
| Width (B) | 13mm |
NA4903
Needle Roller Bearing
Technical Specifications
| Part Number | NA4903 |
| Brand | IKO |
| Bearing Type | Needle Roller Bearing |
| Bore (Inner Diameter) | 17 mm |
| Outer Diameter | 30 mm |
| Width / Thickness | 13 mm |
Enquire About the IKO NA4903
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Technical Datasheet
Download full specifications for NA4903 — dimensions, load ratings, and material data.
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Engineering support
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About the IKO NA4903
The IKO NA4903, is a needle roller bearing, featuring a 17mm bore, 30mm outer diameter, and 13mm width, and is in stock at Buy Bearings.
IKO NA4903 needle roller bearing with inner ring, 17x30x13mm. Suitable for gearbox and pump applications.
Key Specifications
The NA4903 needle roller bearing is specified with 17mm bore (inner diameter), 30mm outer diameter, 13mm width.
Common Applications
Needle Roller Bearings are commonly used in:
About Needle Roller Bearings
Needle roller bearings use thin, long cylindrical rollers to provide high load capacity in a compact radial space. They are ideal for applications where space is limited but load capacity is critical.
Why Buy the NA4903 from Buy Bearings?
- UK-authorised distributor with genuine IKO 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 NA4903 bearing?
The NA4903 is a IKO Needle Roller Bearing with a 17mm bore, 30mm outer diameter and 13mm width. It is In Stock at Buy Bearings.
What are the NA4903 dimensions?
The NA4903 measures 17mm bore (inner diameter) × 30mm outer diameter × 13mm width.
Is the NA4903 in stock?
The NA4903 is In Stock at Buy Bearings. Submit an enquiry or call our sales team for current stock and pricing (POA).
Related & Compatible Bearings
Same needle 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.
