JSA045CPO bearings ( 4.5 inch x 5 inch x 0.25 inch) have the advantages of Extremely compact, lightweight design, composite load-bearing capacity, high rigidity, and flexible installation, and are therefore widely used in the Robots, semiconductor equipment, medical instruments, radar antennas, and aerospace precision mechanisms.

| Part Number | JSA045CPO |
| Bore | Cylindrical |
| Balls | standard 1/8" balls |
| Bearing Type | Inch Sealed or Shielded Type C Radial Contact ball Bearings |
| Cage | Brass; snapover separator |
| Series | JSA SERIES 1/4" X 1/4" |
| Race Width Tolerance | +0.000 -0.005" |
| Temperature - T(min) [°C] | -30 |
| Temperature - T(max) [°C] | 110 |
| Seal type | J = Buna N Rubber Seal (Double Sealed) |
| Units | Inch |
| Load | radial loads, withstand moderate axial loads, reversing axial loads, and moment loads. |
| Rolling Element Type | Balls |
| Ball Material | AISI 52100 Steel |
| Rolling Element Material | AISI 52100 Steel |
| Precision Class | ISO Class NORMAL / ABEC-1 |
| Equivalent | KAYDON KDY.JA045CP0 SILVERTHIN JSA045CP0 SKF FPCA4082RS1 FAG L10QA4082RSD NSK NBC11406DD INA CSCA0452RS SSB RJA045CP0 NTN KRA114LL |
| Interchangeable | SILVER THIN JSA045CPO |
| Rows NO. | One |
| L1 Land Diameter [inch] | 4.686 |
| L2 Land Diameter [inch] | 4.814 |
| Fillet radius (Note 2) max | 0.025" |
| RADIAL DYNAMIC [lbf] | 610 |
| RADIAL STATIC [lbf] | 1440 |
| TORQUE MAX NO LOAD [OZ-IN] | 28 |
| APPROX WEIGHT [lb] | 0.21 |
The JSA045CPO Thin-section deep groove ball bearings mainly consist of a thin-walled inner ring, a thin-walled outer ring, steel balls, and a cage. Their cross-sectional dimensions are constant and extremely thin, typically conforming to ISO 12240 standards, and are available in open or sealed configurations.
Thin-section deep groove ball bearings utilize a thin-walled constant cross-section design, resulting in lightweight construction and a small footprint, significantly reducing the overall weight and size of equipment. They can simultaneously withstand radial and bidirectional axial loads, exhibiting low friction and high-speed characteristics, and are easy to install, making them suitable for light to medium load conditions.















