L18VA2500 Bore 25 Inch, Imperial Open Type X, 4-Point Contact Ball Bearings
The L18VA2500 Thin-section four-point contact ball bearings are widely used in fields with stringent space and precision requirements, including: industrial robots (wrist and elbow joints), medical equipment (CT scanner rotating frames, surgical robots), aerospace (satellite antenna drive mechanisms), semiconductor equipment (wafer handling robotic arms), optical instruments (laser trackers, precision rotary tables), and precision machine tools (rotary worktables).
The L18VA2500 bearing is a Inch Open Type X 4-Point Contact Ball Bearings with an inner diameter of 25 inch , an outer diameter of 26.5 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 11910 N, its static radial rated load is approximately 29060 N. Its dynamic axial rated load is approximately 93719 N, its static axial rated load is approximately 323147 N. Open (No seal) type, together determine its load-bearing capacity, rotational accuracy, and applicable working conditions.
Interchange code: KAYDON KDN.KF250XP0, SILVERTHIN SF250XP0, SKF FPXF2500, FAG L18VA2500, NSK NBX63519, INA CSXF250, SSB RF250XP0, NTN KXF250
L18VA2500 bearings ( 25 inch x 26.5 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 Robotics, aerospace, semiconductor equipment, medical instruments and optoelectronic turntables.
| Part Number | L18VA2500 |
| Bearing Type | Inch Open Type X 4-Point Contact Ball Bearings |
| Equivalent | KAYDON KDN.KF250XP0 SILVERTHIN SF250XP0 SKF FPXF2500 FAG L18VA2500 NSK NBX63519 INA CSXF250 SSB RF250XP0 NTN KXF250 |
| Interchangeable | FAG L18VA2500 |
| Cage | Brass; snapover separator |
| Series | L18VA 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) |
| Units | Inch |
| Precision Class | ISO Class NORMAL / ABEC-1 |
| Rows NO. | One |
| B φ Inside [inch] | 25 |
| D Φ Outside [inch] | 26.5 |
| Width [inch] | 0.75 |
| L1 [inch] | 25.555 |
| L2 [inch] | 25.945 |
| (Note 2) max | 0.080" |
| RADIAL DYNAMIC [lbf] | 11910 |
| RADIAL STATIC [lbf] | 29060 |
| THRUST DYNAMIC [lbf] | 21068 |
| THRUST STATIC [lbf] | 72643 |
| MOMENT DYNAMIC [LBS-in] | 115035 |
| MOMENT STATIC [LBS-in] | 374200 |
| APPROX WEIGHT [lb] | 10.9 |
The L18VA2500 Thin-section four-point contact ball bearings are mainly composed of a thin-walled inner ring, a thin-walled outer ring, steel balls, and a cage. The raceway has a Gothic arch shape, and the steel balls form four-point contact with the inner and outer rings. The cross-sectional dimensions are constant and extremely thin.
Thin-section four-point contact ball bearings utilize a thin-walled constant cross-section design, resulting in lightweight construction and a small footprint. A single bearing can simultaneously withstand radial loads, bidirectional axial loads, and overturning moments. They possess high rigidity, high-speed capability, and are easy to install, making them a viable replacement for traditional combined bearings.
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