NA4903 Needle Roller Bearing 17×30×13mm With Inner Ring for Compact Space Machinery

• NA4903 is machined ring needle roller bearing equipped with solid inner ring. Made of GCr15 bearing steel, this open type bearing features thin needle rollers, offering high radial load capacity within a compact radial space. It is suitable for limited installation space and widely used in compact transmission machinery.

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• Ultra small cross-section saves installation space
• High radial load capacity under compact structure
• Separable inner ring, convenient assembly
• Stamped steel cage guides needle rollers stably
• Open design allows lubricant refilling

• Compact gearboxes and transmission units
• Hydraulic piston pump components
• Textile and packaging machinery
• Agricultural small transmission assemblies
• General compact rotating shaft systems

*Ready stock. Short lead time. Fast delivery. Send us your bearing list and let’s get started!

• 30 years professional bearing industry experience
• ISO certified strict quality inspection
• Flexible OEM & private label customization
• 3-5 days fast delivery for stocked bearings
• Full bearing series, universal interchangeable size
• Factory direct price & reliable after-sales service

*Need custom bearings? Share your drawings, specifications or requirements — we’ll find the right solution for you.