K18020XPO Bore 180 Mm, 20mm SERIES, REALI-SLIM MM Metric Series Bearings
The K18020XPO 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 K18020XPO bearing is a Thin-section bearings with an inner diameter of 180 mm , an outer diameter of 220 mm, a width of 20 mm. It typically uses Precision Class 1 (ABEC 1F) standard grade precision tolerances and GCr15SiMn rings, GCr15SiMn rolling mlement. Its dynamic radial rated load is approximately 30771.4 N, its static radial rated load is approximately 44151.4 N. open type, together determine its load-bearing capacity, rotational accuracy, and applicable working conditions.
K18020XPO bearings ( 180 mm x 220 mm x 20 mm) 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 | K18020XPO |
| Reference From | Kaydon K18020XPO |
| Manufacturer Part Code | K18020XPO |
| Series | 20mm SERIES |
| Separator | P = One-piece, snap-type, stamped brass or non-metallic composite cage |
| Thin section bearings type | REALI-SLIM MM Metric Series Bearings |
| Balls | Snapover separator 3/8" (inch) balls |
| Rolling bearing type | Four-point contact ball bearing (type X) |
| Seal | open |
| Cage | Solid brass |
| Type | X = Four-point contact |
| α Contact angle [°] | 30 ° |
| Unit of measurement | Metric |
| Precision | Precision Class 1 (ABEC 1F) standard |
| Ring | AISI 52100 steel |
| Contact type | Four-point contact |
| Races/Balls Material | K = AISI 52100 steel rings and balls, no seals (open) |
| Weight [lb] | 3 |
| d φ Inside [inch] | 7.087 |
| D Φ Outside [inch] | 8.661 |
| B Width [inch] | 0.787 |
| H Radial cross section [inch] | 0.787 |
| L1 Land Dia. [inch] | 7.677 |
| L2 Land Dia. [inch] | 8.071 |
| F chamfer [inch] | 0.059 |
| C0r Static Radial [kg] | 4500 |
| Cr Dynamic Radial [kg] | 3133 |
| C0a Static Axial [kg] | 11265 |
| Ca Dynamic Axial [kg] | 4822 |
| C0M Static Moment [N-m] | 4411 |
| CM Dynamic Moment [N-m] | 2304 |
The K18020XPO 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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