ND050XPO Four-point Contact Thin Section Bearing (type X), Solid Brass Cage
The ND050XPO 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 ND050XPO bearing is a Thin-section bearings with an inner diameter of 4.9998 inch , an outer diameter of 6.0003 inch, a width of 0.5 inch. It typically uses Precision Class 1 per ABEC 1F grade precision tolerances and AISI 52100 steel rings, AISI 52100 steel rolling mlement. Its dynamic radial rated load is approximately 11480.4 N, its static radial rated load is approximately 16669 N. Its dynamic axial rated load is approximately 17851 N, its static axial rated load is approximately 41708.5 N. open type, together determine its load-bearing capacity, rotational accuracy, and applicable working conditions.
ND050XPO bearings ( 4.9998 inch x 6.0003 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 | ND050XPO |
| Series | ND Series |
| Precision ABEC | Precision Class 1 per ABEC 1F |
| Thin section bearings type | Open ENDURAKOTE-Plated ENDURA-SLIM Bearing |
| Ring | AISI 52100 steel |
| Reference From | Kaydon ND050XPO |
| Manufacturer Part Code | ND050XP0 |
| Seal type | open |
| Rolling bearing type | Four-point contact ball bearing (type X) |
| Coating | No |
| Alias | Corrosion-Resistant Bearings |
| Cage | Solid brass |
| Lubricant | No |
| Unit of measurement | inch |
| Separator | P = One-piece, snap-type, stamped brass or non-metallic composite cage |
| Contact type | Four-point contact |
| Races/Balls Material | N = AISI 52100 steel rings - Endurakote coated, AISI 440C stainless balls, no seals (open) |
| Weight [lb] | 1 |
| Contact angle - α [°] | 30 |
| Balls | Snapover separator 1/4" balls |
| Temperature - T(min) [°C] | -30 |
| Temperature - T(max) [°C] | +110 |
| Shaft diameter [inch] | 4.9998 |
| F chamfer [inch] | 0.060 |
| H Radial cross section [inch] | 0.5 |
| Radial Thickness x Width ["] | D = 0.500 x 0.500 |
| d φ Inside [inch] | 4.9998 |
| D Φ Outside [inch] | 6.0003 |
| B Width [inch] | 0.5 |
| L1 Land Dia. [inch] | 5.37 |
| L2 Land Dia. [inch] | 5.63 |
| Cr Dynamic Radial [lbf] | 2586 |
| C0r Static Radial [lbf] | 3746 |
| Ca Dynamic Axial [lbf] | 3964 |
| C0a Static Axial [lbf] | 9381 |
| CM Dynamic Moment [lbf·in] | 5326 |
| C0M Static Moment [lbf·in] | 10329 |
The ND050XPO 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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