6205ZZC3

What type of bearing is this component?

It is a single-row deep-groove ball bearing designed primarily for radial loads while also accommodating moderate axial loads in both directions.

What are the bearing dimensions?

The bearing has a 25 mm bore, a 52 mm outside diameter and a width of 15 mm.

What does the ZZ designation mean?

ZZ indicates that the bearing has a metal shield on both sides. These shields help limit the entry of contaminants while retaining the factory-applied lubricant.

What does the C3 clearance rating indicate?

C3 indicates greater internal radial clearance than the standard clearance class. This allows the bearing to accommodate factors such as thermal expansion, interference fits and higher operating speeds.

Is this bearing supplied with lubrication?

As a double-shielded bearing, the 6205ZZC3 is normally supplied pre-lubricated for enclosed operation. The metal shields are not intended to be removed during routine installation.

What applications commonly use this bearing?

Typical applications include electric motors, pumps, fans, conveyors, gearboxes and other rotating industrial equipment requiring a compact radial bearing.

Can this bearing handle both radial and axial loads?

Yes. Its deep-groove raceway design is suitable for substantial radial loading and moderate axial loading from either direction, subject to the operating conditions of the application.

Why is C3 clearance often used in electric motors?

Motor operation can generate heat and cause the shaft, inner ring and surrounding components to expand. C3 clearance provides additional internal space to reduce the likelihood of excessive preload as operating temperature rises.

What cage and shielding materials are typically used?

This bearing configuration normally uses a pressed-steel cage and metal shields on both sides, providing a durable arrangement for general industrial rotating equipment.

What should be checked before fitting the bearing?

Confirm the 25 mm shaft diameter, 52 mm housing bore, 15 mm available width, required C3 clearance and double-shielded configuration. Shaft and housing tolerances should also match the intended load, speed and fit.

Does the bearing require an external seal?

The two metal shields provide basic protection against larger contaminants and help retain lubricant, but they are not contact seals. Applications exposed to significant moisture or fine particles may require additional external sealing within the machine.

Is the bearing suitable for high-speed rotation?

Deep-groove ball bearings are generally well suited to high rotational speeds. The permissible speed for the 6205ZZC3 depends on load, fit, temperature, lubrication and surrounding machine conditions.