L18TA2500 Bore 25 Inch, Imperial Open Type X, 4-Point Contact Ball Bearings
The L18TA2500 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 L18TA2500 bearing is a Inch Open Type X 4-Point Contact Ball Bearings with an inner diameter of 25 inch , an outer diameter of 26 inch, a width of 0.5 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 6235 N, its static radial rated load is approximately 17440 N. Its dynamic axial rated load is approximately 49729 N, its static axial rated load is approximately 193977 N. Open (No seal) type, together determine its load-bearing capacity, rotational accuracy, and applicable working conditions.
Interchange code: KAYDON KDN.KD250XP0, SILVERTHIN SD250XP0, SKF FPXD2500, FAG L18TA2500, NSK NBX63512, INA CSXD250, SSB RD250XP0, NTN KXD250
L18TA2500 bearings ( 25 inch x 26 inch x 0.5 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 | L18TA2500 |
| Bearing Type | Inch Open Type X 4-Point Contact Ball Bearings |
| Equivalent | KAYDON KDN.KD250XP0 SILVERTHIN SD250XP0 SKF FPXD2500 FAG L18TA2500 NSK NBX63512 INA CSXD250 SSB RD250XP0 NTN KXD250 |
| Interchangeable | FAG L18TA2500 |
| Cage | Brass; snapover separator |
| Series | L18TA SERIES 1/2" X 1/2" |
| Balls | standard 1/4" 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 |
| Width [inch] | 0.5 |
| L1 [inch] | 25.37 |
| L2 [inch] | 25.63 |
| (Note 2) max | 0.060" |
| RADIAL DYNAMIC [lbf] | 6235 |
| RADIAL STATIC [lbf] | 17440 |
| THRUST DYNAMIC [lbf] | 11179 |
| THRUST STATIC [lbf] | 43606 |
| MOMENT DYNAMIC [LBS-in] | 59650 |
| MOMENT STATIC [LBS-in] | 222400 |
| APPROX WEIGHT [lb] | 4.79 |
The L18TA2500 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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