Regal Beloit Corporation ER-35 Radial Ball Bearing

Sealmaster ER-35 radial ball insert bearing from Regal Rexnord (formerly Regal Beloit) is an ER‑style mounted bearing with a cylindrical outer race designed for through‑bore installations. It accepts a 2.1875 in (2-3/16 in) bore and presents an outer diameter of 3.9370 in with a width around 2.1875 in, a compact package that can be secured to a housing and shaft. The unit uses a set‑screw locking inner race to secure to the shaft and typically includes a snap ring for outer retention, is relubricatable, and features a felt labyrinth seal and flinger to help protect the rolling elements from dust and debris. Inner and outer rings are often described as black‑oxide coated with a zone‑hardened inner ring for wear resistance; some configurations list brass as the inner race material. Designed for standard‑duty service, the ER‑35 is commonly used in equipment assemblies that require a ready‑to‑install, maintenance‑friendly insert bearing, enabling straightforward replacement and reliable shaft support in a compact, through‑bore format.