Rotary Spa Jets

rotary jetPlastic 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.

Plastic Vs Steel

Lightweight: Plastic is five times lighter than steel, thereby reducing the weight and energy to move them.


Read all the benefits of Plastic vs Steel Bearings