K81220 NTN Max operating temperature, Tmax 120 °C Thrust roller bearings
| Dc1 | 100 mm |
| Dc | 150 mm |
| Lw | 15 mm |
| Bearing ring (inner ring) WS | WS81220 |
| Bearing ring (outer ring) GS | GS81220 |
| Ea | 140 mm |
| Eb | 109.2 mm |
| Cage assembly mass | 0.62 kg |
| Ca | 243 kN |
| C0a | 795 kN |
| Nlim (grease) | 480 rpm |
| Nlim (oil) | 1.900 rpm |
| Min operating temperature, Tmin | -20 °C |
| Max operating temperature, Tmax | 120 °C |
| Characteristic cage frequency, FTF | 0.5 Hz |
| Characteristic rolling element frequency, BSF | 8.31 Hz |
| Characteristic outer ring frequency, BPF0 | 9 Hz |
| Characteristic inner ring frequency, BPFI | 9 Hz |
| Bearing number | K81220 |
| Brand | NTN |
| Bore Diameter (mm) | 100.000 |
| Outer Diameter (mm) | 150.000 |
| d | 100.000 mm |
| D | 150.000 mm |
| Dw | 15.000 mm |
| Category | Bearings |
| BDI Inventory | 0.0 |
| Manufacturer Name | NTN |
| Minimum Buy Quantity | N/A |
| Weight / Kilogram | 0.534 |
| Product Group – BDI | B04144 |
Detailed Parameters
parameter：
| 54207U+U207 Thrust ball bearings | d:37 mm ，Bore Diameter :37mm ，Brand:CX ，d1:30 mm |
| GE45FO-2RS Plain bearings | Size :45x75x43mm ，Outer Diameter :75mm ，Bore Diameter :45mm ，Brand:ISO |
| 22315EAE4 Spherical roller bearings | Size :75x160x55mm ，Width :55mm ，Outer Diameter :160mm ，Bore Diameter :75mm ，d:75 mm ，Brand:NSK |
| 1011KLLB Deep groove ball bearings | Brand:Timken ，Bore Diameter :17.4625mm ，Size :17.4625x40x27.78mm ，Width :27.78mm ，Outer Diameter :40mm |
| 46234A Tapered roller bearings | Brand:KOYO ，Size :170x260x84mm ，Bore Diameter :170mm ，Outer Diameter :260mm |
| HR30232J Tapered roller bearings | Bore Diameter :160mm ，Size :160x290x52mm ，Outer Diameter :290mm ，Brand:NSK |
| BK1612 Needle roller bearings | Mass:0.01 kg ，Inner ring reference:IR12X16X13 ，Dw:2 mm ，Lubrication hole on outer ring:Non/No ，Lw:7.3 mm |
| GE80-DO Plain bearings | Width :55mm ，Size :80x120x55mm ，Outer Diameter :120mm ，Bore Diameter :80mm ，Brand:INA |
| KSR15-B0-10-10-14-08 Bearing units | Number of teeth:14 ，Bore Diameter :15mm ，d:15 mm ，Do:71.3 mm ，Brand:INA ，Dk:78 mm |
| LRJ 6.1/2 Cylindrical roller bearings | Size :165.1x279.4x39.69mm ，Width :39.69mm ，d:165.1 mm ，Brand:SIGMA ，Outer Diameter :279.4mm ，Bore Diameter :165.1mm |
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