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62 Series
Home Deep Groove Ball Bearings 62 Series

S6203-2RS Stainless Steel Sealed Ball Bearing | Anti-Corrosion & Maintenance-Free | 17×40×12 mm

S6203-2RS Stainless Steel Sealed Ball Bearing | Anti-Corrosion & Maintenance-Free | 17×40×12 mm

The S6203-2RS is a premium, single-row deep groove ball bearing engineered specifically for harsh, corrosive environments. Manufactured from high-grade stainless steel rather than standard chrome steel, this bearing provides exceptional resistance to rust, moisture, and chemical exposure. Featuring dual Nitrile Butadiene Rubber (NBR) seals, it securely locks in high-quality grease while keeping out water and particulate matter. With standardized dimensions of a 17mm bore, 40mm outer diameter, and 12mm width, the S6203-2RS delivers a reliable, long-lasting solution for washdown and outdoor applications.

S6203-2RS Deep Groove Ball Bearing 17x40x12 mm | Dual Rubber Sealed | Stainless Steel Construction

Built for true "install-and-operate" convenience, the 2RS sealing configuration acts as a heavy-duty physical barrier. This ensures the internal raceways stay continuously lubricated, even in high-moisture or washdown scenarios where standard bearings would quickly fail. Designed to operate without the need for secondary housing seals, this bearing drastically reduces machinery downtime and lifecycle maintenance costs.

S6203-2RS Stainless Steel Sealed Ball Bearing | Anti-Corrosion & Maintenance-Free | 17×40×12 mm

Comprehensive Applications

Because of its unique anti-rust and moisture-resistant properties, the S6203-2RS is the go-to component for industries dealing with liquids, sanitation, and outdoor exposure:

Food & Beverage Processing
  • Conveyor Belt Rollers
  • Bottling and Canning Lines
  • Commercial Food Mixers
Marine & Offshore Equipment
  • Boat Winches and Hoists
  • Marine Pulley Systems
  • Saltwater-Exposed Hardware
Medical & Pharmaceutical
  • Cleanroom Machinery
  • Laboratory Centrifuges
  • Sanitary Pumps
Chemical & Washdown Environments
  • Specialized AC/DC Motors
  • High-Pressure Washers
  • Water Treatment Equipment

Key Performance Features

01. Outstanding Corrosion Resistance

Forged from premium AISI 440C (SUS440C) stainless steel, both the inner/outer rings and the balls offer superior defense against oxidation, water ingress, and mildly acidic or alkaline environments.

02. Heavy-Duty Contaminant Barrier

The twin NBR rubber seals (2RS) make direct contact with the inner ring recess, creating an impenetrable shield against dust, splashing water, and chemical vapors, ensuring the internal mechanics remain uncompromised.

03. Factory-Sealed Lubrication

Delivered pre-filled with the exact required volume of high-performance (and often food-grade compatible) grease. This completely removes the necessity for manual lubrication, allowing for instant deployment into your equipment.

Technical Specifications

Bearing Type Single Row Deep Groove Ball Bearing
ISO Dimension Series 6200 Series (Light-Medium)
Basic Designation S6203
Suffix 2RS (Two Rubber Seals)
Bore Diameter (d) 17 mm
Outer Diameter (D) 40 mm
Width (B) 12 mm
Material (Races & Balls) Stainless Steel (AISI 440C / SUS440C)
Precision Class ABEC-1 (ABEC-3/P6 Available)
Cage Material Stainless Steel (AISI 304)
Dynamic Load Rating (Cʳ) 7.6 kN
Static Load Rating (C₀ʳ) 3.7 kN
Limiting Speed (Grease) 12,000 r/min
Limiting Speed (Oil) --
Weight (approx.) 0.065 kg

Interchange Part Numbers

The S6203-2RS follows global dimension standards and can be used to directly replace the following part numbers:

  • SKF: W 6203-2RS1 / W6203-2RSH
  • NSK: S6203DDU
  • FAG: S6203-2RSR
  • NTN: S6203LLU / F6203LLU
  • KOYO: S6203-2RS
  • Timken: S6203-2RS

Design & Configuration

The design philosophy behind the S6203-2RS focuses on ultimate survivability. By pairing the rust-preventative qualities of 440C stainless steel with the rigorous sealing capabilities of dual NBR rubber, this bearing effectively solves the problem of premature wear in damp environments. The contact seals ride smoothly in a groove on the inner ring, keeping external contaminants at bay while trapping the specialized factory grease inside.

It is an indispensable upgrade for equipment exposed to the elements, regular cleaning protocols, or marine conditions, offering a significant lifespan improvement over standard chrome steel alternatives.

"A high-grade, rust-resistant mechanical core engineered to keep your washdown and outdoor equipment running smoothly, no matter the environmental challenges."

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