KB035CP0 Slim Section Bearing ID 3-1/2" OD 4-1/8" Width 5/16" 74 mm outer the NJ315MY inner diameter is

the NJ315MY inner diameter is 75mm

the 6315-2NSE outer diameter is 160mm

VR88641 Ball Bearing

the 6321ZZE inner diameter is 105mm

KB035CP0 Slim Section Bearing ID 3-1/2" OD 4-1/8" Width 5/16" 74 mm outer the NJ315MY inner diameter isKB035CP0 Slim Section Ball Bearing Open Type 3. 5" x 4. 125" x 5 16" Brass Cage The KB035CP0 slim type ball bearing is designed for applications where space and weight are limited but precision and strength are still critical. With a 3. 5 inch inner diameter and a compact 5 16 inch cross section, it's great for robotics, medical devices, automation, and aerospace systems. Pack of 1 bearing Inner diameter: 3. 5" (3 1 2") Outer diameter: 4. 125" (4 1