Simplicity® Linear Bearings - Inch, ISO, and JIS Metric
Often we hear this question in regard to the Simplicity family of linear plain bearings; “Why are there different colors? Why are there red, blue, and green bearings?”

The 3 Families of Simplicity® Linear Bearings
- Designed to interchange with industry standard inch series linear bearings.
- Sizes for shafting ranging from 3/16” up to 4”.
- Designed to interchange with European ISO metric standard linear bearings.
- Sizes for shafting ranging from 5mm to 80mm.
- JIS Metric Series - Green
- Designed to interchange with Asian JIS metric standard linear bearings.
- Sizes for shafting ranging from 6mm to 150mm.
All of the Simplicity linear bearings come standard with the FrelonGOLD® self-lubricating liner and do NOT require external lubrication. Follow this link to learn more about applying any of the Simplicity Bearing Family .