Deep groove ball bearing 6305 RS — sealed single-row radial bearing

Deep groove ball bearing 6305 RS is a single-row radial bearing with rubber seals (RS) on one or both sides to retain lubricant and limit ingress of dust and moisture. This sealed design provides dependable support for radial loads and smooth shaft rotation in electric motors, gearboxes, conveyors and various industrial machines. The bearing's standard dimensions and robust construction make it a common choice for applications where sealed protection and low-maintenance operation are required.

Advantages

The rubber seal(s) reduce lubricant leakage and protect internal components from contaminants while allowing consistent performance over a wide range of operating conditions. The single-row deep groove design offers low friction, stable rotational accuracy and the ability to accommodate moderate radial loads. Sealed housings simplify installation and reduce the need for frequent relubrication, contributing to longer service intervals in many systems.

Suitable for

• Electric motors and fans
• Gearboxes and reduction drives
• Conveyor rollers and material handling equipment
• Pumps, compressors and small rotating assemblies

Key specifications

• Bearing type: single-row deep groove ball bearing with rubber seal(s)
• Sealing: RS rubber seal(s) to retain lubricant and exclude contaminants
• Load direction: primarily radial loads
• Design features: low friction, stable rotation, axial misalignment tolerance typical for deep groove geometry
• Maintenance: sealed for reduced relubrication frequency

How to use

Select the 6305 RS bearing according to shaft diameter and housing dimensions compatible with the bearing's standard size. Handle the bearing with clean hands or gloves to avoid contaminating the seal area. Press or fit the bearing onto the shaft using suitable tools and methods that apply force only to the correct ring to avoid damaging the raceways or seals. Install the bearing into the housing ensuring proper axial and radial positioning, and check that seals are intact before commissioning the equipment.

Usage recommendations

Operate the bearing within manufacturer-recommended speed and temperature limits for sealed deep groove bearings. For extended service life, avoid exposing the bearing to heavy axial shocks, high levels of corrosive contaminants, or temperatures beyond typical rubber-seal limits. If access allows periodic inspection, monitor for unusual noise, vibration or seal damage and replace the bearing if performance degrades.