Bearings for Rotary Spa Jets

pool cleaner bearingsPlastic radial ball bearings are used underwater in rotary spa jets to enable the jets to spin freely with minimal water pressure. They operate in a hostile environment with the challenges of hot water, chlorination, suspended dirt, sand, body lotion, hair etc.

Critical Design features: POM, PBT, or PP plastic races and cage fitted with 316 stainless balls. Bearing construction features True Race Technology™ ball grooves and anti-clogging bearing designs.

rotary spa jet bearingAdditional reasons for use:

  • Low friction: Spinning water jets need to be able to rotate with standard water pressure to deliver a pulsating water massage.
  • A KMS bearing is designed to tolerate suspended particles without clogging.
  • Part integration: A KMS bearing can be designed and manufactured as an integrated assembly that can reduce parts count and assembly time while improving performance.

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Plastic Vs Steel

Shock Absorption: Plastic absorbs shock loads better than metal due to its elastic nature. Many conventional ball bearings fail due to Brinelling of the raceway, i.e. balls denting the raceways.


Read all the benefits of Plastic vs Steel Bearings