Deep Groove Ball Bearings FAG 6204 -Z-C3

The FAG 6204 -Z-C3 deep-groove ball bearing, with dimensions of 20 × 47 × 14 mm, a single-sided sheet metal cover and C3 bearing clearance, offers defined running characteristics for industrial rotary movements.

The single-row deep-groove ball bearing 6204 -Z-C3 primarily accommodates radial loads as well as moderate axial forces in both directions. Manufactured from standard rolling-element bearing steel 100Cr6, the bearing guides rotating shafts with dimensional stability and low friction. The open rear allows for a continuous supply of grease or lubricating oil from the surrounding housing, whilst the metal cover plate protects the front from the ingress of coarser particles.

Under what operating conditions is the 6204 -Z-C3 deep groove ball bearing fitted?

This design is used in bearing locations where elevated temperatures occur during operation or where tight fits on the shaft are required. The increased radial clearance specifically compensates for thermal expansion and elastic deformation. The single-sided Z-cover is suitable for installation situations where one side of the bearing is adjacent to a closed lubrication circuit and the opposite side needs to be shielded against foreign particles.

What characteristics do the Z-cover plate and C3 bearing clearance offer during operation?

The C3 designation indicates a slightly increased radial bearing clearance compared with standard clearance. If the inner ring is fitted tightly onto a 20 mm shaft or if the bearing location heats up under load, sufficient operating clearance remains to ensure jam-free rotation. A sheet steel cage guides the rolling elements evenly along the circular path. As the non-contacting Z-disc generates no additional frictional resistance, torque losses and temperature rise remain low.