202 & 203 Series Single Row Spherical Roller Bearings

The 202 and 203 Series Spherical Roller Bearings are compact, light-duty double-row spherical roller bearings designed for small rotary equipment requiring basic self-aligning capability and stable radial load performance within limited installation space.

These series feature a miniature structural design with symmetrical barrel-shaped rollers and a spherical outer ring raceway, enabling effective compensation for minor shaft deflection and installation misalignment while maintaining smooth rotational stability.

The 202 series adopts a narrow cross-section structure for ultra-compact applications, while the 203 series features an expanded cross-section design that provides higher load capacity for slightly more demanding light-duty conditions.

BY Bearings supplies these series with two standard cage options: TVP glass fiber reinforced polyamide cages and solid machined brass (M) cages, ensuring reliable performance under medium-speed, light-load operating conditions.

Bearing Designation Example

20208 / 20310

• 2 – Double-row spherical roller bearing structure

• 02 / 03 – Series type

• 02: Narrow cross-section compact design (202 series)

• 03: Wider cross-section enhanced load design (203 series)

• 08 / 10 – Bore code

• 08 = 40 mm bore diameter

• 10 = 50 mm bore diameter

• C / CC (optional) – Stamped steel cage (basic configuration)

• M – Machined solid brass cage (optional heavy-duty variant)

Note: Tapered bores and lubrication groove designs are generally not standard for this series due to its compact lightweight structure.

Features and Benefits

• Compact and Space-Saving Design

  The small footprint design makes the 202 & 203 series ideal for equipment with strict radial and axial installation constraints.

• Basic Self-Aligning Capability

  The spherical outer ring raceway allows compensation for minor shaft misalignment and deflection, ensuring stable operation in compact systems.

• Lightweight and Efficient Structure

  Designed for low inertia and reduced weight, these bearings are well-suited for small rotary components and light-duty applications.

• Enhanced Load Capacity (203 Series)

  Compared with the 202 series, the 203 series provides a wider cross-section and improved load-carrying capacity while maintaining compact dimensions.

• Flexible Cage Options

  Available in TVP reinforced polyamide cages for lightweight applications and M-type machined brass cages for higher durability requirements.

• High-Speed Suitability

  The compact design enables relatively higher limiting speeds, making the series suitable for small and medium-speed light-duty machinery.

Typical Applications

The 202 & 203 Series Spherical Roller Bearings are widely used in light industrial and compact mechanical systems, including:

• Small industrial fans and blowers

• Light-duty conveyor rollers

• Compact agricultural machinery

• Textile processing equipment

• Packaging machinery rotary systems

• Small woodworking machine tools

• Light material handling systems

• Miniature automation equipment

Technical Advantages

• Compact double-row spherical roller structure

• Narrow (202) and wide (203) cross-section options

• Basic self-aligning capability for minor misalignment

• Lightweight design for small mechanical systems

• Higher limiting speed compared with large spherical roller bearings

• TVP polyamide and M brass cage options available

• Low friction and stable operation under light loads

• Cost-effective and highly interchangeable design

The 202 & 203 Series Spherical Roller Bearings are ideal solutions for compact machinery requiring reliable self-alignment, stable light-load performance, and efficient space utilization in small-scale rotary applications.