NBK Japan MJC-30-EWH 7/16"inch to 15mm Jaw-type Flexible Coupling 61801 deep groove With a 4" inner diameter

With a 4" inner diameter and only 3/8" cross section

and need less maintenance:

✅ Inner/outer races: Zirconium Oxide ceramic

SW12UU 3/4" Bore linear motion ball bushings/bearings

NBK Japan MJC-30-EWH 7/16"inch to 15mm Jaw-type Flexible Coupling 61801 deep groove With a 4" inner diameterNBK Japan MJC 30 EWH 7 16 inch to 15mm Jaw type Flexible Coupling NBK Japan MJC 30 EWH 7 16 inch to 15mm Jaw type Flexible Coupling NBK Japan MJC 30 EWH 7 16 inch to 15mm Jaw type Flexible Coupling, this is a Jaw type flexible coupling. The bellows allows eccentricity, angularmisalignment, and end play. Coupling Bore 1 Diameter: 7 16 inch Coupling Bore 2 Diameter: 15mm Coupling Length: 35 Coupling Outer Diameter: 30 Material: Stainless This is a jaw