KOYO 6203 2RS 17x40x12 Deep Groove Ball Bearing

Applications

The KOYO 6203 2RS 17x40x12 deep groove ball bearing is a premium-quality radial bearing ideally suited for demanding industrial environments. With its 17 mm bore, 40 mm outer diameter and 12 mm width, this unit integrates seamlessly into bearing housings, bearing units or compact drive assemblies where space is constrained. The dual-side rubber seals (“2RS”) protect the bearing core from contaminants and moisture, making this component suitable for applications in conveyors, gearboxes, motor drives, agricultural machinery, automotive sub-assemblies and other industrial equipment requiring high longevity and reliability.

Advantages

• High durability - Manufactured by KOYO with high-precision steel and meticulous finishing, this ball bearing delivers reliable performance under continuous or heavy-duty use.

• Sealed protection - The 2RS rubber seals on both sides prevent ingress of dust or water, reducing maintenance and enhancing operational life in harsh environments.

• Versatile industrial usage - As a deep groove ball bearing, it is designed to handle both radial loads and moderate axial loads, making it an excellent choice for general-purpose industrial equipment.

• Compact and efficient - The 17x40x12 dimension set is optimized for compact assemblies where bearing unit space and efficiency matter most.

• B2B-focused supply - Perfect for procurement in bulk, integration into bearing units or housing systems, with prompt availability and professional support for business customers.

Technical Specifications

• Type: Deep groove ball bearing, single row.

• Model: KOYO 6203 2RS.

• Dimensions: Bore d = 17 mm, Outer diameter D = 40 mm, Width B = 12 mm.

• Basic dynamic load rating (Cr): approx. 12.0 kN.

• Basic static load rating (C₀r): approx. 4.8 kN.

• Sealing: 2RS (rubber sealed both sides).

• Limiting speed (grease lubrication): up to 12 000 min⁻¹.

• Weight: About 0.065 kg.

• Suitable for integration into bearing housings, bearing units or as standalone bearing components in industrial assemblies.

FAQ

Q1: What does the “2RS” designation mean?
A1: The “2RS” refers to rubber seals on both sides of the bearing. This sealing prevents ingress of dust and moisture, enhancing lifespan in industrial environments.

Q2: Can this bearing handle axial loads or mainly radial?
A2: As a deep groove ball bearing, it is optimized for radial loads but also able to accommodate moderate axial loads in both directions, making it apt for general industrial usage.

Q3: What industries or applications are common for this bearing?
A3: Typical applications include motor drives, gearboxes, conveyors, agricultural machinery, machine tool spindles, automotive components and general industrial drive systems requiring high reliability and low maintenance.

Q4: How to ensure correct installation in a bearing housing or bearing unit?
A4: Ensure shaft and housing fit dimensions correspond to d=17 mm bore and D=40 mm outer diameter; apply correct preload if required; follow manufacturer mounting guidance to avoid misalignment or contamination.

Q5: What is the lead time and supply condition for business orders?
A5: This bearing is available for bulk B2B supply, ready for rapid dispatch with a standard warehouse cycle. Availability and shipping details are handled via our commercial team.