High-Load Needle Roller Bearings – NA and RNA Series

High-load needle roller bearings of the NA and RNA series are designed for demanding industrial applications where compact dimensions, high radial capacity and excellent fatigue performance are essential. These bearings provide a reliable solution for machines operating under continuous stress, shock loads or limited installation space.

Why Choose NA and RNA Needle Roller Bearings?

• Extremely high radial load capacity thanks to large needle rollers and optimized internal geometry.
• Compact design suitable for confined spaces where standard roller bearings cannot be used.
• Excellent resistance to wear under harsh operating conditions.
• Reliable operation at high speeds with minimal friction losses.
• Wide availability in different tolerances, cages and clearances.

Common Applications

These bearings are widely used across many industrial sectors, especially where equipment operates under heavy loads or requires high precision. Typical applications include:

• Hydraulic pumps and motors
• Gearboxes and transmission systems
• Construction and mining equipment
• Agricultural machinery
• Packaging, printing and processing machines
• Two-stroke engines and small motor assemblies

Available Types

• NA Series: Inner ring included, suitable for shafts without hardened surfaces.
• RNA Series: Without inner ring, for applications where shaft hardness and precision are sufficient.
• Full complement versions: Maximum number of rollers for the highest possible load capacity.
• Caged versions: Reduced friction and improved speed performance.

Technical Advantages

• Optimized needle roller profile for superior load distribution
• Reduced internal friction and heat generation
• Available with various seals for contaminated environments
• Suitable for both continuous and intermittent load cycles
• Precision manufactured for long service life

Global Supply and Fast Delivery

NA and RNA needle roller bearings can be supplied individually or in bulk quantities for industrial projects. Worldwide delivery is available, including express shipping for urgent maintenance or production needs.

Request a Quote

Provide the exact bearing designation or your required dimensions, and we will supply suitable NA or RNA needle roller bearings according to your specifications. Custom sourcing, premium brands and hard-to-find items are also available.