S6201-2RS is a standard model in the "stainless steel deep groove ball bearing" family, with an inner diameter of 12 mm, an outer diameter of 32 mm, a width of 10 mm, and rubber sealing rings (2RS) on both sides. Its' function 'can be summarized as:
In environments with high corrosion, humidity, or cleanliness requirements, replace ordinary bearing steel 6201-2RS to bear the same radial axial composite load and ensure long service life.
By utilizing the passivation film of stainless steel itself and contact seals on both sides, salt water, cleaning agents, steam, dust, etc. are blocked outside the raceway, achieving "maintenance free" or "washable" operation.
By relying on high-precision channels and low friction seals, it provides silent high-speed support of ≤ 19000 r/min (grease lubrication) for micro motors, water pumps, fans, etc.
Typical usage scenarios (industry examples)
Food and pharmaceuticals: filling machines, homogenizers, slicers, CIP cleaning pumps; It can be directly rinsed with alkaline water without disassembling the machine.
Pumps and fluid equipment: multi-stage centrifugal pumps, filter press pumps, hot water circulation pumps, small submersible pumps, long-term exposure to water mist or chemical media.
Medical/Laboratory: Dental handles, centrifuges, dialysate pumps, requiring low noise, corrosion resistance, and disinfectability.
Printing and Textile: Ink rollers, pulping machines, dyeing and finishing equipment, resistant to ink and steam corrosion.
Ocean or outdoor: marine drainage pump, solar tracking reducer, landscape fountain motor, salt spray resistance, high humidity.
Home&Office: Dishwasher spray arm, smart toilet pump, humidifier fan, air purifier motor - silent, rust free, maintenance free.
Technical Overview
Material: The ring/ball is generally made of AISI 440C (9Cr18Mo), the holder is 304, and the sealing ring is made of fluororubber or nitrile rubber. It is resistant to weak acids, weak alkalis, and salt spray as a whole.
Load: Dynamic 6.1 kN/Static 2.7 kN, capable of withstanding a small amount of bidirectional axial force.
Speed: grease lubrication limit ≈ 19000 rpm; If lubricated with oil or opened, it can reach 24000 rpm.
Temperature: -30 ℃~110 ℃ for continuous operation (the upper limit is determined by the temperature resistance of the sealing ring).
Sealing: 2RS=contact rubber seal, IP rating is approximately equal to IP54, can splash water but cannot be submerged for a long time; If you need complete waterproofing, you can choose 2RSR+outer retaining ring or use the "S6201-2RS1" derivative model with 440C+PTFE sealing instead.
one-sentence summary
S6201-2RS is the 6201 bearing that is "not afraid of water, not afraid of washing, and not rusting". Wherever 6201 is used and it is afraid of corrosion, it is directly replaced - food pumps, medical motors, outdoor fans, and household dishwashers are its most common positions.