SA040CPO Radial Contact Thin Section Bearing (type C), Solid Brass Cage
The SA040CPO Thin-section deep-groove ball bearings are primarily used in applications where space is limited, weight reduction is required, and loads are moderate. Typical applications include industrial robots (such as joints and end-effectors), semiconductor manufacturing equipment, medical imaging equipment (CT scanner gantries), optical trackers, radar antennas, packaging machinery spindles, and lightweight aerospace transmission mechanisms. They are capable of supporting both radial and bidirectional axial loads.
The SA040CPO bearing is a Thin-section bearings with an inner diameter of 4 inch , an outer diameter of 4.5 inch, a width of 0.25 inch. It typically uses Precision Class 1 per ABEC 1F grade precision tolerances and AISI 440C stainless steel rings, AISI 440C stainless steel rolling mlement. Its dynamic radial rated load is approximately 2535.95 N, its static radial rated load is approximately 5669.5 N. open type, together determine its load-bearing capacity, rotational accuracy, and applicable working conditions.
Interchange code: KAYDON KDY.KA040CP0, SILVERTHIN SA040CP0, SKF FPCA400, FAG L10QA400, NSK NBC10106, INA CSCA040, SSB RA040CP0, NTN KRA040
SA040CPO bearings ( 4 inch x 4.5 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 | SA040CPO |
| Series | SA Series (1/4” cross section) |
| Precision ABEC | Precision Class 1 per ABEC 1F |
| Thin section bearings type | Stainless Steel Open REALI-SLIM Bearings |
| Ring | AISI 440C stainless steel |
| Reference From | Kaydon SA040CPO |
| Manufacturer Part Code | SA040CP0 |
| Seal type | open |
| Rolling bearing type | Radial contact ball bearing (type C) |
| Coating | No |
| Cage | Solid brass |
| Lubricant | No |
| Unit of measurement | inch |
| Separator | P = One-piece, snap-type, stamped brass or non-metallic composite cage |
| Contact type | 2-point contact |
| Races/Balls Material | S = AISI 440C stainless steel rings and balls, no seals (open) |
| Weight [lb] | 0.19 |
| Balls | Snapover separator 1/8" balls |
| Temperature - T(min) [°C] | -30 |
| Temperature - T(max) [°C] | +110 |
| Shaft diameter [inch] | 4 |
| F chamfer [inch] | 0.025 |
| H Radial cross section [inch] | 0.25 |
| Radial Thickness x Width ["] | A = 0.250 x 0.250 |
| d φ Inside [inch] | 4 |
| D Φ Outside [inch] | 4.5 |
| B Width [inch] | 0.25 |
| L1 Land Dia. [inch] | 4.186 |
| L2 Land Dia. [inch] | 4.314 |
| Cr Dynamic Radial [lbf] | 560 |
| C0r Static Radial [lbf] | 1278 |
The SA040CPO 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.
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