NSK 6321DDU deep groove ball bearings
NSK 6321DDU deep groove ball bearings with easy-to-use 190x140x24 Size (mm) parts graphics, giving you the ability to check parts availability, pricing, examine remanufactured options.
| Size (mm) | 190x140x24 |
| Bore Diameter (mm) | 190 |
| Outer Diameter (mm) | 140 |
| Width (mm) | 24 |
| d | 140 mm |
| D | 190 mm |
| B | 24 mm |
| d1 | 155.4 mm |
| d2 | 155.4 mm |
| D1 | 174.6 mm |
| r1,2 – min. | 1.5 mm |
| r3,4 – min. | 0.6 mm |
| a | 50.6 mm |
| da – min. | 147 mm |
| db – min. | 147 mm |
| Da – max. | 183 mm |
| Db – max. | 186 mm |
| ra – max. | 1.5 mm |
| rb – max. | 0.6 mm |
| dn | 159.5 mm |
| Basic dynamic load rating – C | 90.4 kN |
| Basic static load rating – C0 | 110 kN |
| Fatigue load limit – Pu | 3.6 kN |
| Limiting speed for grease lubrication | 6000 r/min |
| Limiting speed for oil lubrication | 9000 mm/min |
| Ball – Dw | 15.875 mm |
| Ball – z | 29 |
| Gref | 21.6 cm3 |
| Calculation factor – e | 0.68 |
| Calculation factor – Y2 | 1.41 |
| Calculation factor – Y0 | 0.76 |
| Calculation factor – X2 | 0.67 |
| Calculation factor – Y1 | 0.92 |
| Preload class A – GA | 560 N |
| Preload class B – GB | 1120 N |
| Preload class C – GC | 2240 N |
| Preload class D – GD | 4480 N |
| Calculation factor – f | 1.29 |
| Calculation factor – f1 | 0.98 |
| Calculation factor – f2A | 1 |
| Calculation factor – f2B | 1.04 |
| Calculation factor – f2C | 1.08 |
| Calculation factor – f2D | 1.14 |
| Calculation factor – fHC | 1 |
| Preload class A | 348 N/micron |
| Preload class B | 457 N/micron |
| Preload class C | 614 N/micron |
| Preload class D | 841 N/micron |
| Inventory | 0.0 |
| Manufacturer Name | SKF |
| Minimum Buy Quantity | N/A |
| Weight / Kilogram | 1.91 |
| Product Group | B04270 |
| Enclosure | Open |
| Precision Class | ABEC 7 | ISO P4 |
| Material – Ball | Steel |
| Number of Bearings | 1 (Single) |
| Contact Angle | 25 Degree |
| Preload | None |
| Raceway Style | 1 Rib Outer Ring |
| Cage Material | Phenolic |
| Rolling Element | Ball Bearing |
| Flush Ground | No |
| Inch – Metric | Metric |
| Other Features | Single Row | Angular Contact | High Precision |
| Long Description | 140MM Bore; 190MM Outside Diameter; 24MM Width; Open Enclosure; ABEC 7 | ISO P4 Precision; Steel Bal |
| UNSPSC | 31171531 |
| Harmonized Tariff Code | 8482.10.50.28 |
| Noun | Bearing |
| Keyword String | Angular Contact Ball |
| Manufacturer Item Number | 71928 ACD/P4A |
| Weight / LBS | 4.211 |
| Bore | 5.512 Inch | 140 Millimeter |
| Outside Diameter | 7.48 Inch | 190 Millimeter |
| Width | 0.945 Inch | 24 Millimeter |
| r1,2 min. | 1.5 mm |
| r3,4 min. | 0.6 mm |
| da min. | 147 mm |
| db min. | 147 mm |
| Da max. | 183 mm |
| Db max. | 186 mm |
| ra max. | 1.5 mm |
| rb max. | 0.6 mm |
| Basic dynamic load rating C | 90.4 kN |
| Basic static load rating C0 | 110 kN |
| Fatigue load limit Pu | 3.65 kN |
| Attainable speed for grease lubrication | 6000 r/min |
| Attainable speed for oil-air lubrication | 9000 r/min |
| Ball diameter Dw | 15.875 mm |
| Number of balls z | 29 |
| Reference grease quantity Gref | 21.6 cm³ |
| Preload class A GA | 560 N |
| Static axial stiffness, preload class A | 348 N/µm |
| Preload class B GB | 1120 N |
| Static axial stiffness, preload class B | 457 N/µm |
| Preload class C GC | 2240 N |
| Static axial stiffness, preload class C | 614 N/µm |
| Preload class D GD | 4480 N |
| Static axial stiffness, preload class D | 841 N/µm |
| Calculation factor f | 1.29 |
| Calculation factor f1 | 0.98 |
| Calculation factor f2A | 1 |
| Calculation factor f2B | 1.04 |
| Calculation factor f2C | 1.08 |
| Calculation factor f2D | 1.14 |
| Calculation factor fHC | 1 |
| Calculation factor e | 0.68 |
| Calculation factor (single, tandem) Y2 | 0.87 |
| Calculation factor (single, tandem) Y0 | 0.38 |
| Calculation factor (single, tandem) X2 | 0.41 |
| Calculation factor (back-to-back, face-to-face) Y1 | 0.92 |
| Calculation factor (back-to-back, face-to-face) Y2 | 1.41 |
| Calculation factor (back-to-back, face-to-face) Y0 | 0.76 |
| Calculation factor (back-to-back, face-to-face) X2 | 0.67 |
| Mass bearing | 1.65 kg |
Detailed Parameters
parameter：
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