What are the best alternatives to ball bearings for linear motion

What are the best alternatives to ball bearings for linear motion tslot roller bearings Rex and Link-Belt Roller Bearings have been trusted across multiple industries for 100 years and have higher load carrying capacity than any comparable roller coaster slot machine The bearings allows for smooth movement of sliding doors, panels or components They fit in all the 15 Series , 40 Series and 8mm slot wide

roller coaster slot machine roller bearing Based on Nexen's innovative Roller Pinion technology, the Roller Pinion System Geared Bearings come complete with a precision zero backlash

slot car controller Cam Roller Technology Overview PBC Linear•420K views · 3:22 Go to How to Assemble T T-SLOT-BOLT M8 X 25 Length – 45 Series TSLOTBOLT-M8X25-45 R9,04 TAPERED ROLLER BEARINGS · LINEAR BEARINGS · NEEDLE ROLLER BEARINGS · BUSHES