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Miniature Ball Bearings with Extended Inner Ring

Miniature ball bearings with an extended inner ring are designed to provide additional axial support, making them ideal for applications where space is limited but stability is crucial.

The Extended Inner Ring Simplifies Installation

One notable feature of this type of bearing is that the width of its inner ring is greater than that of the outer ring. Generally, the inner ring is extended equally on both sides.

You can directly use the extended end face of the inner ring as a positioning surface to mate and fix with other components on the shaft, such as the shaft shoulder or lock nuts. This not only reduces the number of required parts and inventory types but also lowers the complexity and potential misalignment errors during assembly, making the installation of the bearing more straightforward, efficient, and cost-effective.

If you have such requirements, the miniature ball bearing with an extended inner ring will be your ideal choice.

Miniaturized Size for Narrow Spaces

As a member of the micro-bearings series, this type of bearing is renowned for its compact dimensions, with the inner diameter, outer diameter, and total width all controlled within the micrometre to millimetre range. This miniaturisation feature makes them indispensable key components in numerous precision small-scale devices.

These micro-bearings are widely used in products with strict space limitations, such as office automation equipment, computer hard disk drives, small pumps and valves, as well as various consumer electronics and models. In these application scenarios, the design of the extended inner ring not only maintains the compact size of the bearing but also provides a more convenient installation method, offering significant support for achieving the miniaturisation and high integration of the equipment.

Better Shaft Support and Stability

The extended inner ring is designed not only to streamline the installation process but also to offer an expanded support span for the shaft. In certain specific applications, especially when the shaft is relatively thin or needs to bear a certain bending moment load, the standard width inner ring may not be sufficient to meet the required support stability.

The extended inner ring design increases the contact length between the bearing’s inner ring and the shaft, effectively transferring load and enhancing stiffness and rotational stability, especially under asymmetric loads or high-speed conditions. This offers a significant performance advantage for micro-rotating systems requiring high accuracy and reliability. By minimising vibration, it extends both the bearing’s service life and that of related components.

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FREQUENTLY ASKED QUESTIONS

Can the extended inner ring eliminate the need for shaft shoulders?

Not typically for location, but it acts like a built-in spacer against adjacent parts, simplifying the assembly stack-up on the shaft.

How do I find the exact width difference between the inner and outer rings?

This dimension is specific to each bearing size. Please consult the technical drawing or ball bearing size chart on the product page for precise data.

Are these Miniature Ball Bearings with Extended Inner Ring available with seals or shields?

Yes, many sizes are available in open, shielded (ZZ), or sealed (2RS) configurations to suit various operating environments. Check product options.

Do you offer samples? What is the Minimum Order Quantity (MOQ)?

Sample availability and Minimum Order Quantity (MOQ) can vary by product model. Please check the specific product page or contact our sales team for details on the bearing you need.