FPAF2000 Bore 20 Inch, Imperial Open Type A, Angular Contact Ball Bearings
The FPAF2000 Thin-section angular contact ball bearings are primarily used in applications with stringent requirements for weight, space, and precision, such as aerospace gyroscopes, robotic joints, medical CT scanner gantries, machine tool spindles, semiconductor manufacturing equipment, optical instruments (e.g., telescopes), and precision rotary tables.
The FPAF2000 bearing is a Inch Open Type A Angular Contact Ball Bearings with an inner diameter of 20 inch , an outer diameter of 21.5 inch, a width of 0.75 inch. It typically uses ISO Class NORMAL / ABEC-1 grade precision tolerances and AISI 52100 Steel rings, AISI 52100 Steel rolling mlement. Its dynamic radial rated load is approximately 8560 N, its static radial rated load is approximately 28100 N. Its dynamic axial rated load is approximately 100881 N, its static axial rated load is approximately 360822 N. Open (No seal) type, together determine its load-bearing capacity, rotational accuracy, and applicable working conditions.
FPAF2000 bearings ( 20 inch x 21.5 inch x 0.75 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 Robot joints, aerospace, semiconductor equipment, medical instruments and optoelectronic turntables.
| Part Number | FPAF2000 |
| Bearing Type | Inch Open Type A Angular Contact Ball Bearings |
| Equivalent | KAYDON KDN.KF200AR0 SILVERTHIN SF200AR0 SKF FPAF2000 FAG L15VA2000 NSK NBA50819 INA CSEF200 SSB RF200AR0 NTN KYF200 |
| Interchangeable | SKF FPAF2000 |
| Cage | Brass; one piece pocket separator |
| Series | FPAF SERIES 3/4" X 3/4" |
| Balls | standard 3/8" balls |
| Race Width Tolerance | +0.000 -0.005" |
| Contact angle [°] | 30 |
| Seal type | Open (No seal) |
| Manufacturer Part Code | FPAF 2000 |
| Units | Inch |
| Precision Class | ISO Class NORMAL / ABEC-1 |
| Rows NO. | One |
| B φ Inside [inch] | 20 |
| D Φ Outside [inch] | 21.5 |
| Width [inch] | 0.75 |
| L1 [inch] | 20.555 |
| L2 [inch] | 20.945 |
| L3 [inch] | 21.092 |
| (Note 2) max | 0.080" |
| RADIAL DYNAMIC [lbf] | 8560 |
| RADIAL STATIC [lbf] | 28100 |
| THRUST DYNAMIC [lbf] | 22678 |
| THRUST STATIC [lbf] | 81112 |
| APPROX WEIGHT [lb] | 8.9 |
The FPAF2000 Thin-section angular contact 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, with contact angles typically of 15°, 25°, or 30°, making them suitable for space-constrained installations.
Thin-section angular contact ball bearings utilize a thin-walled, constant cross-section design, resulting in lightweight construction and a small footprint, effectively reducing the overall weight of equipment. They can simultaneously withstand radial and axial loads, possessing high rigidity, high-speed capability, and good positioning accuracy, and are easy to install.
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