Bearing - HK 5525 ZEN

Product detailed description

Bearing - HK 5525 ZEN

HK 5525 ZEN drawn-cup needle roller bearing

An HK-series bearing consists of a thin drawn outer cup, needle rollers and a cage. It has no separate inner ring and uses the shaft surface as its raceway. This design provides high radial load capacity with a very small radial cross-section, making it suitable for compact bearing positions.

Key features

• Dimensions: 55 mm shaft diameter, 63 mm cup outside diameter and 25 mm width.
• Design: open-ended drawn-cup needle roller bearing.
• Inner ring: not included; the shaft forms the raceway.
• Loads: high radial forces in restricted space.
• Brand: ZEN.

Requirements for adjacent components

The shaft raceway must be hardened, accurately ground and have a suitable surface finish. The thin outer cup obtains its final geometry after press-fitting, so housing-bore accuracy, roundness and rigidity are important. If the shaft cannot serve as a raceway, select a suitable inner ring and verify the resulting installation dimensions again.

Mounting and operation

Before ordering, compare the full designation HK 5525 ZEN and dimensions. Press the bearing in evenly with a suitable mounting mandrel; never strike the thin cup directly. The open design has no seals and requires appropriate lubrication and contamination protection. A separate thrust element is required for axial loads.