634-2RS-C3 PFI Miniature Deep Groove Ball Bearing Sealed C3 Clearance (ID 4mm OD 16mm W 5mm)

The PFI 630-2RS is a precision deep groove ball bearing designed for consistent performance in demanding industrial and mechanical environments. Manufactured to high dimensional standards, it provides stable operation under both radial and axial loads, supporting a wide range of rotational applications where reliability and durability are critical.

Product Overview

This bearing is part of PFI’s 600 series, characterised by its single-row deep groove geometry and rubber-sealed construction. The "2RS" designation indicates the presence of two synthetic rubber seals that protect the internal components from contaminants while retaining lubrication. The bearing is designed for universal use across machinery, equipment assemblies, and automotive systems where compact, high-speed rotation is required.

Design Features

The bearing features inner and outer rings manufactured from high-grade chrome steel, precision ground for dimensional accuracy. Steel balls are evenly spaced by a robust steel cage that ensures even load distribution and reduced friction during operation. The double-sealed configuration helps maintain internal cleanliness and lubrication, extending service life and reducing maintenance intervals. The sealing design also minimises ingress of dust, moisture, and other airborne particles common in industrial settings.

Functional Characteristics

The PFI 630-2RS operates smoothly at moderate to high speeds, with low noise and minimal vibration. Its deep groove design allows it to support both radial and limited axial loads in either direction. The contact seals retain grease and prevent lubricant loss, ensuring steady performance across a broad temperature range. This makes the bearing suitable for continuous-duty applications where rotational reliability is essential.

Use in Assemblies

This bearing type is commonly fitted in electric motors, pumps, conveyors, transmission units, and automotive components. It serves as a key rotational element in assemblies requiring a compact layout and high dimensional precision. The standardised design allows for easy replacement and interchangeability with equivalent bearing types conforming to ISO specifications.