KB4 NB Bearing 4mm Ball Bushings Linear Motion Bearing 120mm bore ✔️ 1/4" ID x 3/4"

✔️ 1/4" ID x 3/4" OD x 9/32" Wide - Double Metal Shields

here are the dimensions of the 6309ZZE

21/32" Inch Inner Diameter

Equal Fafnir Torrington 9126K

R1-5ZZ Shielded Ball Bearing

KB4 NB Bearing 4mm Ball Bushings Linear Motion Bearing 120mm bore ✔️ 1/4" ID x 3/4"KB12GUU NB Standard Type: Slide Unit Made in Japan: NB Linear Systems KB12GUU NB Standard Type Bearing, measures an inner diameter of 12mm, retainer material is resin, Bearing is seals on both sides, Series mainly used in the USA, NB brand (Nippon Bearing Linear Systems), made in Japan. KB12GUU NB Bearing Linear Ball Bushing Shaft Diameter: 12mm Number Of Ball Circuits: 4 Quantity: 1 Bearing Dynamic load rating Cr: 510 N Static load rating Cor: 784 N