6904-2RS-C3 PFI Deep Groove Ball Bearing Sealed C3 Clearance (ID 20mm OD 37mm W 9mm)

The PFI 6900 series Deep Groove Ball Bearing is a precision-engineered component designed to provide reliable rotation and load support in a wide range of applications. Manufactured to high standards of dimensional accuracy, it ensures consistent performance under varying operating conditions and integrates easily into existing shaft and housing arrangements.

Product Overview

This bearing belongs to the 6900 series, a group of single-row deep groove ball bearings characterised by a thinner cross-section compared to standard types, allowing for compact installation where space and weight are critical factors. Its internal geometry accommodates both radial and limited axial loads in either direction, making it suitable for use in light to moderate load conditions across industrial machinery and mechanical systems.

Design Features

The PFI 6900 series features a steel outer and inner ring, precision ground raceways, and a set of high-grade steel balls retained by a pressed steel cage. This configuration maintains smooth motion and reduces friction during operation. Depending on the specific model, the bearing may include metal shields or rubber seals to protect the internal components from dust and contamination, extending service life in more demanding environments. The optimised internal clearance ensures stable operation under standard tolerances and speeds.

Functional Characteristics

This bearing type demonstrates low running noise, efficient torque transmission, and consistent rotation even at higher speeds. The deep groove design enhances radial load capacity while allowing for minor axial movements. Its construction supports uniform load distribution, limiting internal stress and minimising wear. When correctly lubricated and installed, the bearing operates with prolonged lifespan and minimal maintenance intervention.

Use in Assemblies

In assembly, the PFI 6900 series Deep Groove Ball Bearing is commonly used in electric motors, gearboxes, light conveyors, and precision equipment where compact mounting and reliable rotation are required. It can be mounted using standard interference fits on shafts and housings according to ISO bearing installation practices. Its versatility and dimensional accuracy ensure compatibility with common mechanical arrangements within industrial and light mechanical systems.