6311-2RS1 Sealed Deep Groove Ball Bearing

Product Overview

The 6311-2RS1 is a single-row, double-sealed deep groove ball bearing sized 55 × 120 × 29 mm (bore × outside diameter × width). Its chrome-steel rings, balls and cage and grease lubrication support low-friction rotation while the two-sided seals help limit contaminant ingress. This specification is intended for 55 mm shafts requiring a broader bearing envelope and higher catalog load ratings than the 6310 size. The listed radial dynamic and static ratings are 16,658 lbf and 10,116 lbf, respectively; verify load, fits and operating speed for the intended assembly.

Key Features

• Double-sided contact sealing helps retain grease and reduce exposure to dust in 55 mm shaft installations.

• Single-row deep groove construction supports predominantly radial loading and limited axial load in both directions.

• Chrome-steel rings, balls and cage, with normal CN radial clearance and P6 tolerance as listed in the source specifications.

• Catalog maximum speed: 3,800 rpm; specified temperature range: −30 °C to 120 °C.

Technical Specifications

Typical Applications

• electric motor drive ends

• air-handling blower shafts

• water pump assemblies

• general industrial transmission supports

Selection Guidance

Confirm housing and shaft fits, mounting conditions, lubrication requirements, load direction and operating speed before specifying this bearing. Application examples are illustrative and do not replace engineering selection.