1221S NTN (Oil) Lubrication Speed 3 600 r/min 105x190x36mm Self aligning ball bearings
| rs min | 2.1 mm |
| e | 0.18 |
| Y1 | 3.6 |
| Y2 | 5.5 |
| Y0 | 3.7 |
| Radial clearance class | CN |
| Precision class | P0 |
| Mass | 4.52 kg |
| Dynamic load, C | 75 kN |
| Static load, C0 | 32.5 kN |
| Nlim (oil) | 3.600 rpm |
| Nlim (grease) | 3.000 rpm |
| Min operating temperature, Tmin | -20 °C |
| Max operating temperature, Tmax | 120 °C |
| da min | 116 mm |
| Da max | 179 mm |
| ra max | 2 mm |
| Bearing number | 1221S |
| Size (mm) | 105x190x36 |
| Brand | NTN |
| Bore Diameter (mm) | 105 |
| Outer Diameter (mm) | 190 |
| Width (mm) | 36 |
| d | 105 mm |
| D | 190 mm |
| B | 36 mm |
| C | 36 mm |
| r min. | 2.1 mm |
| da min. | 116 mm |
| Da max. | 179 mm |
| ra max. | 2 mm |
| Weight | 4.52 Kg |
| Basic dynamic load rating (C) | 75 kN |
| Basic static load rating (C0) | 32.5 kN |
| (Grease) Lubrication Speed | 3 000 r/min |
| (Oil) Lubrication Speed | 3 600 r/min |
| Calculation factor (e) | 0.18 |
| Calculation factor (Y0) | 3.7 |
| Calculation factor (Y1) | 3.6 |
Detailed Parameters
parameter：
| 6903 Deep groove ball bearings | Size :17x30x7mm ，Bore Diameter :17mm ，Brand:CYSD ，Outer Diameter :30mm |
| 241/500W33 Spherical roller bearings | Brand:ISO ，Bore Diameter :500mm ，Size :500x830x325mm ，Outer Diameter :830mm ，d:500 mm ，Width :325mm |
| 626HZZ Deep groove ball bearings | Bore Diameter :6mm ，Brand:AST ，Width :6mm ，Size :6x19x6mm ，Bearing Type:Shielded ，Outer Diameter :19mm |
| 2201EEG15 Self aligning ball bearings | rs min:0.6 mm ，d1:16.2 mm ，D1:24.8 mm ，e:0.37 |
| SF688W5 Deep groove ball bearings | Size :8x16x5mm ，Outer Diameter :16mm ，Brand:ZEN ，Bore Diameter :8mm |
| 29420 M Thrust roller bearings | Brand:CX ，Outer Diameter :210mm ，Bore Diameter :100mm ，d:100 mm |
| LMEF8L Linear bearings | Brand:Samick ，Outer Diameter :16mm ，d:8 mm ，Bore Diameter :8mm |
| NJ421-M+HJ421 Cylindrical roller bearings | Outer Diameter :260mm ，Brand:NKE ，Bore Diameter :105mm ，Size :105x260x60mm |
| 4TRS19C Tapered roller bearings | Brand:KOYO ，Outer Diameter :615.95mm ，Bore Diameter :482.6mm ，Size :482.6x615.95x330.2mm |
| CSXD045 Deep groove ball bearings | Brand:INA ，d:4 1/2 inch ，Width :12.7mm ，Outer Diameter :139.7mm ，Bore Diameter :114.3mm ，Size :114.3x139.7x12.7mm |
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