Ultage Series

The world’s highest standard new generation of bearings with excellent long operating life, high-load capacity and high speed

“ULTAGE” (a name created from the combination of “ultimate,” signifying refinement, and “stage,” signifying NTN’s intention that this series of products be employed in diverse applications) is the general name for NTN’s new generation of bearings that are noted for their industry-leading performance.

ULTAGE series features

• Longer service life
• High-load capacity
• Higher rotational speed

ULTAGE Spherical Roller Bearings [Type EA, Type EM]

Longer service life and higher rotational speed improve ease-of-use while contributing to more eco-friendly operation.

Longer Service Life

• Larger rollers provide the industry’s highest load capacity.
• Extended maintenance intervals.
• Lighter and more compact design.
• Withstands operating temperatures up to 200°C.

Higher Rotational Speed

• The industry’s highest allowable rotational speed.
• Simple window-type confi¬guration employs a pressed steel cage.
• The back face of the cage provides a guide function that eliminates the guide ring.

Improved Ease-of-Use

• Unique structure readily accepts lubricant.
• Easy application of grease.

The industry’s highest load capacity

These bearings have a significantly increased roller diameter and incorporate the maximum number of rollers, thus achieving both a high load capacity and a longer service life. Maintenance intervals can also be extended.

1. Basic dynamic load rating: up to 65% greater than the NTN conventional design
2. Basic dynamic load rating: up to 35% greater than the NTN conventional design
3. Service life: up to five times longer than the NTN conventional design

The industry’s highest allowable speed

The new pressed steel cage results in allowable bearing speeds up to 20% greater than NTN’s conventional design.

Pressed steel cage provided as standard

The window-type pressed steel cage provides higher rigidity. Each roller pocket is provided with four tabs.

• The guide system employs a back-to-back cage system.
• Four tabs in each cage pocket stabilize the roller position.
• The innovative cage pocket shape ensures a stable supply of lubricating oil or grease into the bearing.
• A special surface treatment enhances wear resistance.

Compact, lightweight design