Extra-Capacity ECA Spherical Roller Bearings

With our extra-capacity ECA spherical roller bearings, NSK has redefined our high-performance standards to deliver unrivalled machinery and equipment performance. Boasting an advanced guide ring-free cage and optimized internal design, ECA series bearings deliver a new level of performance, capacity, speed and reliability across a wide array of applications.

Design Features

Manufactured with high purity steel for superior fatigue strength
Next-generation, roller-guided machined brass cage eliminates the need for a center guide ring
Optimized internal design packs in more rollers of larger size for a significant increase in load capacity and bearing fatigue life
Advanced raceway surface finishing for durability and wear resistance
With cylindrical and tapered bores
Radial internal clearances C2, C-normal, C3, C4 and C5
Dimension series 222 and 223
For shaft diameters ranging from 40 to 130 mm

Operating Benefits

Newly optimized guide ring-free cage design reduces sliding friction and wear
Higher load capacities derived from a larger complement of larger-sized rollers
Higher limiting speeds are achievable, even greater than comparable steel cage designs
High temperature dimensional stability: up to 200° C
Downsizing potential with no machine capacity loss