KYG180 Bore 18 Inch, Imperial Open Type A, Angular Contact Ball Bearings
The KYG180 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 KYG180 bearing is a Inch Open Type A Angular Contact Ball Bearings with an inner diameter of 18 inch , an outer diameter of 20 inch, a width of 1 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 12900 N, its static radial rated load is approximately 36020 N. Its dynamic axial rated load is approximately 147674 N, its static axial rated load is approximately 462592 N. Open (No seal) type, together determine its load-bearing capacity, rotational accuracy, and applicable working conditions.
Interchange code: KAYDON KDN.KG180AR0, SILVERTHIN SG180AR0, SKF FPAG1800, FAG L15WA1800, NSK NBA45725, INA CSEG180, SSB RG180AR0, NTN KYG180
KYG180 bearings ( 18 inch x 20 inch x 1 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 | KYG180 |
| Bearing Type | Inch Open Type A Angular Contact Ball Bearings |
| Equivalent | KAYDON KDN.KG180AR0 SILVERTHIN SG180AR0 SKF FPAG1800 FAG L15WA1800 NSK NBA45725 INA CSEG180 SSB RG180AR0 NTN KYG180 |
| Interchangeable | NTN KYG180 |
| Cage | Brass; one piece pocket separator |
| Series | KYG SERIES 1" X 1" |
| Balls | standard 1/2" balls |
| Race Width Tolerance | +0.000 -0.005" |
| Contact angle [°] | 30 |
| Seal type | Open (No seal) |
| Units | Inch |
| Precision Class | ISO Class NORMAL / ABEC-1 |
| Rows NO. | One |
| B φ Inside [inch] | 18 |
| D Φ Outside [inch] | 20 |
| Width [inch] | 1 |
| L1 [inch] | 18.742 |
| L2 [inch] | 19.258 |
| L3 [inch] | 19.472 |
| (Note 2) max | 0.080" |
| RADIAL DYNAMIC [lbf] | 12900 |
| RADIAL STATIC [lbf] | 36020 |
| THRUST DYNAMIC [lbf] | 33197 |
| THRUST STATIC [lbf] | 103990 |
| APPROX WEIGHT [lb] | 13.7 |
The KYG180 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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