JSB045XPO Bore 4.5 Inch, Imperial Sealed Or Shielded Type X, 4-Point Contact Ball Bearings
The JSB045XPO 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 JSB045XPO bearing is a Inch Sealed or Shielded Type X 4-Point Contact Ball Bearings with an inner diameter of 4.5 inch , an outer diameter of 5.125 inch, a width of 0.3125 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 1165 N, its static radial rated load is approximately 1950 N. Its dynamic axial rated load is approximately 8229 N, its static axial rated load is approximately 21706 N. J = Buna N Rubber Seal (Double Sealed) type, together determine its load-bearing capacity, rotational accuracy, and applicable working conditions.
Interchange code: KAYDON KDY.JB045XP0, SILVERTHIN JSB045XP0, SKF FPXB4082RS1, FAG L18RA4082RSD, NSK NBX11407DD, INA CSXB0452RS, SSB RJB045XP0, NTN KXB114LL
JSB045XPO bearings ( 4.5 inch x 5.125 inch x 0.3125 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 | JSB045XPO |
| Bore | Cylindrical |
| Balls | standard 5/32" balls |
| Bearing Type | Inch Sealed or Shielded Type X 4-Point Contact Ball Bearings |
| Cage | Brass; snapover separator |
| Series | JSB SERIES 5/16" X 5/16" |
| Race Width Tolerance | +0.000 -0.005" |
| Contact angle [°] | 30 |
| Temperature - T(min) [°C] | -30 |
| Temperature - T(max) [°C] | 110 |
| Seal type | J = Buna N Rubber Seal (Double Sealed) |
| Units | Inch |
| Load | excellent for moment loading and reversing axial loading |
| Rolling Element Type | Balls |
| Ball Material | AISI 52100 Steel |
| Rolling Element Material | AISI 52100 Steel |
| Precision Class | ISO Class NORMAL / ABEC-1 |
| Equivalent | KAYDON KDY.JB045XP0 SILVERTHIN JSB045XP0 SKF FPXB4082RS1 FAG L18RA4082RSD NSK NBX11407DD INA CSXB0452RS SSB RJB045XP0 NTN KXB114LL |
| Interchangeable | SILVER THIN JSB045XPO |
| Rows NO. | One |
| L1 Land Diameter [inch] | 4.731 |
| L2 Land Diameter [inch] | 4.893 |
| Fillet radius (Note 2) max | 0.040" |
| RADIAL DYNAMIC [lbf] | 1165 |
| RADIAL STATIC [lbf] | 1950 |
| THRUST DYNAMIC [lbf] | 1849 |
| THRUST STATIC [lbf] | 4879 |
| MOMENT DYNAMIC [LBS-in] | 2105 |
| MOMENT STATIC [LBS-in] | 4690 |
| TORQUE MAX NO LOAD [OZ-IN] | 28 |
| APPROX WEIGHT [lb] | 0.33 |
The JSB045XPO 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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