NK 30/30 TV INA 30x40x30 - needle roller bearing without inner ring

Compact high-load bearing for industrial applications

Designed for radial loads in limited installation space

The NK 30/30 TV INA 30x40x30 needle roller bearing is a compact, high-capacity bearing without an inner ring, engineered for applications where space is limited and radial loads are significant. Its needle-roller design ensures excellent load distribution and stable shaft support, making it ideal for industrial machinery, gear systems, bearing housings and drive units that require durability and efficient performance.

Technical advantages & industrial durability

• High radial load capacity in a small footprint - the densely arranged needle rollers provide strong load support, enabling reliable performance even under continuous or heavy-duty operation.

• No inner ring for flexible installation - the absence of an inner race allows the bearing to run directly on a hardened shaft surface, simplifying integration and reducing the need for redesigning surrounding components.

• Optimized for compact bearing housings - with dimensions 30x40x30 mm, this unit fits seamlessly into tight installations, offering strong performance in limited space.

• Stable rotation and long service life - INA’s precision engineering ensures smooth motion, reduced friction and excellent wear resistance, even in demanding industrial environments.

• Ideal for industrial, agricultural and mechanical drives - suitable for gearboxes, shafts, transmission systems, conveyors and other applications requiring reliable radial support.

Specifications & typical applications

• Type: needle roller bearing without inner ring (NK series)

• Dimensions: 30 mm (shaft diameter) x 40 mm (outer diameter) x 30 mm (width)

• Load direction: high radial loads; not intended for axial loads

• Construction: needle rollers with polyamide cage (TV type)

• Applications: industrial drives, reducers, compact bearing housings, agricultural machinery, mechanical assemblies, transmission shafts

• Key characteristics: compact design, high load capacity, long service life, stable shaft support, resistance to wear

This bearing is particularly useful where shaft hardening is feasible and installation space is restricted while maintaining high performance requirements.

FAQ

Why does the NK 30/30 TV INA bearing not include an inner ring?
It is designed to run directly on a hardened shaft, saving installation space and increasing flexibility in mechanical design.

Is this bearing suitable for axial loads?
No — it is intended strictly for high radial loads. Axial loading should be avoided unless supported by additional components.

Where is this bearing commonly used?
In gear systems, industrial machinery, compact bearing housings, agricultural equipment and drive systems where limited space and high radial load capacity are key requirements.

Do needle roller bearings offer high durability?
Yes — the needle roller construction distributes loads efficiently, resulting in long service life and stable operation.

What are the exact dimensions?
30 mm inner mounting diameter, 40 mm outer diameter, 30 mm width.