RNAO 25x35x26 ZW NTN - needle roller bearing

Applications

The RNAO 25x35x26 ZW NTN is a needle roller bearing designed to carry high radial loads in applications with limited installation space. It is widely used in industrial applications such as gearboxes, drive systems, production machinery, automation equipment and conveying systems. The RNAO design operates without an inner ring, allowing direct cooperation with a hardened shaft and enabling compact assembly design.

Advantages

The needle roller construction provides very high radial load capacity compared to solutions such as a ball bearing of similar shaft diameter. The ZW cage guidance ensures stable operation under varying loads and consistent load distribution. Precision manufacturing by NTN delivers high durability, low friction and reliable performance during continuous operation. This bearing is commonly used in compact designs with a bearing housing or as part of a complete bearing unit.

Technical data

• Designation: RNAO 25x35x26 ZW

• Manufacturer: NTN

• Dimensions: 25x35x26 mm

• Type: needle roller bearing without inner ring

• Cage guidance: ZW

• Function: high radial load capacity

Main description

The RNAO 25x35x26 ZW NTN is a precision needle roller bearing developed for demanding industrial environments where compact dimensions and high load capacity are essential. The absence of an inner ring allows the bearing to run directly on a properly hardened and ground shaft, reducing overall size and system weight.

The needle roller design increases the contact surface between rolling elements and raceway, enabling the bearing to support significant radial loads. Compared to a standard ball bearing, the RNAO type offers superior radial load performance in applications with space constraints. The ZW cage guidance ensures stable roller positioning and smooth operation, contributing to long service life and reliable performance.

With standard 25x35x26 dimensions, this bearing can be easily integrated into existing assemblies or used together with a bearing housing as part of a compact bearing unit. It is a proven choice for B2B customers seeking durable, precise and readily available components for continuous-duty industrial machinery.

FAQ

What is the difference between a needle roller bearing and a ball bearing?
A needle roller bearing supports higher radial loads with a smaller cross section.

Does RNAO 25x35x26 ZW include an inner ring?
No, it operates directly on the shaft.

What does ZW mean in the bearing designation?
It refers to a specific cage guidance for stable operation.

Where is this bearing commonly used?
In gearboxes, industrial drives and automation systems.

Is the bearing suitable for continuous operation?
Yes, when correctly installed and lubricated.