Description

SKF 623-2RS1 – Miniature Deep Groove Ball Bearing (Sealed Both Sides)

The SKF 623-2RS1 is a high-precision miniature deep groove ball bearing designed for compact applications that require efficient rotational performance, low noise, and high reliability. Manufactured by SKF, a global leader in bearing solutions, this bearing is ideal for small devices where space is limited, and dependable motion is crucial.

With a compact size and robust design, the SKF 623-2RS1 supports moderate loads while offering smooth operation at high speeds. It features rubber seals (2RS1) on both sides, ensuring superior protection from dust, dirt, and moisture, and significantly extends bearing life by retaining lubrication.

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Product Specifications:

• Bore Diameter (ID): 3 mm

• Outside Diameter (OD): 10 mm

• Width: 4 mm

• Weight: Approx. 0.001 kg

• Dynamic Load Rating (C): 0.37 kN

• Static Load Rating (C₀): 0.14 kN

• Limiting Speed (Grease): Approx. 63,000 RPM

• Seal Type: 2RS1 (Rubber contact seals on both sides)

• Design: Single row deep groove ball bearing

• Clearance: Normal radial internal clearance

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Design and Performance

The SKF 623-2RS1 is part of the miniature bearing series, crafted to operate reliably in restricted spaces. Despite its small size, it maintains excellent radial load handling capacity and can accommodate light axial loads in both directions. The deep raceway grooves and precise ball geometry ensure minimal friction, low noise, and long-lasting operation.

1. 2RS1 Rubber Seals

This bearing includes non-removable rubber seals on both sides, which offer the following advantages:

• Enhanced protection from contaminants like dust and moisture

• Lubricant retention for longer bearing life

• Reduced maintenance requirements

• Contact seals designed for minimal friction while maintaining sealing efficiency

2. Miniature Design for Tight Spaces

With just 3 mm internal diameter and 10 mm outer diameter, this bearing is designed for devices where space and weight are limited. It is ideal for applications such as robotics, electric tools, instruments, small motors, and model machinery.

3. High-Speed Capability

Despite its miniature size, the SKF 623-2RS1 can reach impressive speeds up to 63,000 RPM, making it suitable for high-speed, low-load applications. The rubber seals help retain lubrication under dynamic conditions, ensuring uninterrupted and efficient performance.

4. Quality Materials

SKF manufactures this bearing using high-grade chromium steel for the rings and balls, which offers:

• High wear resistance

• Excellent fatigue performance

• Dimensional accuracy

• Corrosion resistance under normal operating environments

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Applications

The SKF 623-2RS1 is widely used in small-scale and precision engineering industries, including:

• Robotics and automation systems

• Miniature motors and actuators

• 3D printers and CNC tools

• Medical instruments and diagnostic equipment

• Home appliances and electronic devices

• RC models, toys, and hobby-grade mechanical assemblies

Its compact size and efficiency make it a go-to solution for engineers and designers working with miniature mechanical systems.

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Key Benefits

• Long service life due to effective sealing and material quality

• Maintenance-free under normal conditions

• Smooth, quiet operation suitable for noise-sensitive devices

• Corrosion resistance under dry or mildly humid environments

• Compact and lightweight, ideal for space-constrained designs

• Pre-lubricated, ready for installation

• Easy installation with standard dimensions and tolerances

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Technical Notes

• For best results, ensure that shaft and housing fits follow SKF’s recommended tolerances for miniature bearings.

• The bearing is factory-lubricated, and additional lubrication is not required unless operating in high-speed or extreme-temperature environments.

• Use in clean, dry environments or provide additional sealing in heavily contaminated surroundings.

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Packaging and Handling

All SKF bearings are individually packed and sealed to maintain cleanliness during transport and storage. Always handle with care and avoid direct contact with bare hands to prevent corrosion or contamination during installation.

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Summary

The SKF 623-2RS1 miniature deep groove ball bearing offers high precision, durability, and excellent performance in a remarkably compact package. With double rubber seals for protection and lubrication retention, it’s built for applications that require low noise, high speed, and long service life. Whether for robotics, tools, or small devices, this SKF bearing delivers quality you can trust.

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