Deep Groove Ball Bearing 6305 ZZ C3 2AS NTN 25x62x17

Hybrid sealed ball bearing with increased internal clearance

Stable operation in demanding industrial environments

Main product description

The 6305 ZZ C3 2AS NTN deep groove ball bearing 25x62x17 is designed for industrial applications where reliability, thermal stability and enhanced protection against contamination are required. On the European and Polish markets, this bearing is commonly searched using phrases such as “6305 C3 NTN”, “6305 ZZ bearing”, “6305 2AS” and “ball bearing 25x62x17”, reflecting its wide use in professional machinery and drive systems.

The C3 internal clearance provides additional space between rolling elements and raceways, allowing the bearing to operate reliably at higher temperatures and rotational speeds. This feature compensates for thermal expansion during operation and helps maintain smooth, low-friction motion under continuous load.

The ZZ / 2AS hybrid protection concept offers an elevated level of sealing. Metal shields reduce the ingress of solid contaminants, while elastomer seals improve grease retention and protect against moisture. As a result, the bearing delivers extended service life with minimal maintenance requirements, even in challenging operating conditions.

This deep groove ball bearing supports radial loads as well as moderate axial loads in both directions. With its compact dimensions 25x62x17, it integrates easily into standard bearing housings and can be used as a standalone bearing unit in electric motors, pumps, fans, conveyors, gear drives and general industrial equipment.

The 6305 ZZ C3 2AS NTN bearing is selected by B2B customers for its high durability, predictable performance and suitability for continuous industrial operation where long service intervals and operational stability are essential.

FAQ - Frequently Asked Questions

What type of bearing is the 6305 ZZ C3 2AS?
It is a deep groove ball bearing with increased internal clearance and enhanced sealing.

What is the purpose of C3 clearance?
It allows reliable operation at higher temperatures and speeds.

What does the ZZ / 2AS designation indicate?
A combination of metal shields and elastomer seals for improved protection and grease retention.

What loads can this bearing handle?
Radial loads and moderate axial loads in both directions.

Where is this bearing commonly used?
In electric motors, pumps, gearboxes and industrial machinery.