21304CDE4 NSK 20x52x15mm yobi 21304CDE4 Spherical roller bearings
| Bearing number | 21304CDE4 |
| Size (mm) | 20x52x15 |
| Brand | NSK |
| Bore Diameter (mm) | 20 |
| Outer Diameter (mm) | 52 |
| Width (mm) | 15 |
| d | 20 mm |
| D | 52 mm |
| B | 15 mm |
| C | 15 mm |
| r min. | 1.1 mm |
| da min. | 27 mm |
| da max | 28 mm |
| Da min | 42 mm |
| Da max. | 45 mm |
| ra max. | 1 mm |
| Weight | 0.17 Kg |
| Basic dynamic load rating (C) | 29.3 kN |
| Basic static load rating (C0) | 26.9 kN |
| (Grease) Lubrication Speed | 6300 r/min |
| (Oil) Lubrication Speed | 8200 r/min |
| Calculation factor (e) | 0.31 |
| Calculation factor (Y0) | 2.1 |
| Calculation factor (Y2) | 3.2 |
| Category | Spherical Roller Bearings |
| BDI Inventory | 0.0 |
| Manufacturer Name | NSK |
| Minimum Buy Quantity | N/A |
| Weight / Kilogram | 0.08 |
| EAN | 0029176027185 |
| Product Group – BDI | B04311 |
| Internal Clearance | C0-Medium |
| Mounting Method | Shaft Mount |
| Rolling Element | Spherical Roller Bearing |
| Bore Profile | Straight |
| Cage Material | Steel |
| Enclosure | Open |
| Number of Rows of Rollers | Double Row |
| Relubricatable | Yes |
| Withdrawal Sleeve | Not Applicable |
| Inch – Metric | Metric |
| Long Description | 20MM Straight Bore; 52MM Outside Diameter; 15MM Width; C0-Medium Clearance; Shaft Mount; Double Row of Spherical Roller Bearings; Steel Cage Material; Open Enclosure; Relubricatable |
| Category – BDI | Spherical Roller Bearing |
| UNSPSC | 31171510 |
| Harmonized Tariff Code | 84823080 |
| Noun | Bearing |
| Keyword String | Spherical |
| Manufacturer URL | http://www.nskamericas.com |
| Manufacturer Item Number | 21304CDE4 |
| Weight / LBS | 0.17 |
| Outside Diameter | 2.047 Inch | 52 Millimeter |
| Bore | 0.787 Inch | 20 Millimeter |
| Width | 0.591 Inch | 15 Millimeter |
| Adapter Part Number | Not Applicable Inch | Not Applicable Millimeter |
| bore diameter: | 20 mm |
| maximum rpm: | 8200 RPM |
| outside diameter: | 52 mm |
| operating temperature range: | Maximum of +200 °C |
| overall width: | 15 mm |
| cage material: | Steel |
| bore type: | Straight |
| bearing material: | Steel |
| outer ring type: | Not Split |
| cage type: | Inner Ring Guided |
| internal clearance: | C0 |
| precision rating: | RBEC 1 (ISO Class Normal) |
| closure type: | Open |
| finish/coating: | Uncoated |
| lubrication hole type: | Lubrication Groove & Hole |
| outer ring width: | 15 mm |
| dynamic load capacity: | 29300 N |
| fillet radius: | 1.1 mm |
| static load capacity: | 26900 N |
| series: | 213 |
| Y3 | 2.1 |
| hidYobi | 21304CDE4 |
| LangID | 1 |
| Y1 | 2.1 |
| D_ | 52 |
| Y2 | 3.2 |
| Macha rpm | 0 |
| B_ | 15 |
| CAD | https://service.web2cad.co.jp/pcom/maker_login.php?Maker=NSK_RB&language=ja&info=nsk_rb/roller_bearings/spherical_rb/cylindrical_bore_asmtab.prj&varset={STAN=-}.{ORDER=21304CDE4}.{SD=20}.{D=52}.{B=15.0}.{R=1.1}.{CR1=29300}.{COR1=26900}.{LT=10000}.{LM=-}.{LG=6300}.{LO=8200}.{DA1=27}.{DA2=28.000}.{DA3=45}.{DA4=42}.{RA=1.0}.{E=0.31}.{Y2=3.2}.{Y3=2.1}.{Y0=2.1}.{MASS=0.17} |
| da min | 27 |
| hidTable | ecat_NSSPHR |
| Oil rpm | 8200 |
| Y0 | 2.1 |
| mass | 0.17 |
| GRS rpm | 6300 |
| ra | 1 |
| TSR rpm | 10000 |
| C0 | 26.9 |
| DE_ | 43.065 |
| X0 | 1 |
| Prod_Type3 | SRB_CTB_CB |
| X1 | 1 |
| X2 | 0.67 |
| SIR | 4.5 |
| e | 0.31 |
| DA_ | 7 |
| bomp | 21304CDE4 |
| Z_ | 13 |
| ALP2 | 50 |
| ALP1 | 11 |
| ALP3 | 0 |
| D_a max | 45 |
| D_a min | 42 |
| yobi | 21304CDE4 |
| ALPHA_ | 0.207 |
| SDM_ | 36.214 |
| r | 1.1 |
| KBRG | 2321 |
| SBRG | 3 |
| DI_ | 29.362 |
| calcUrl | /BearingGuide/html/calculation.jsp |
Detailed Parameters
parameter：
| 7319BG Angular contact ball bearings | a:84.5 mm ，Contact angle α:40 ° ，r1s min:1.1 mm ，rs min:3 mm ，Mass:6 kg ，Radial clearance class:CN |
| 239/800 CW33 Spherical roller bearings | Outer Diameter :1060mm ，Width :195mm ，Size :800x1060x195mm ，Bore Diameter :800mm ，Brand:CX |
| NK45X54.5X12 Needle roller bearings | Fw:45.000 mm ，Brand:NTN ，Width :12.000mm ，Size :45x54.500x12mm ，Outer Diameter :54.500mm ，Bore Diameter :45.000mm |
| EGB3550-E50 Plain bearings | Size :35x39x50mm ，Outer Diameter :39mm ，Brand:INA ，Bore Diameter :35mm |
| 2218-K Self aligning ball bearings | Brand:NKE ，Size :90x160x40mm ，Width :40mm ，Bore Diameter :90mm ，Outer Diameter :160mm |
| BTM3021A Needle roller bearings | Bore Diameter :30mm ，Size :30x38x21mm ，Outer Diameter :38mm ，Brand:KOYO |
| TSM 5 Plain bearings | Outer Diameter :13mm ，Width :8mm ，Brand:ISB ，d:5 mm ，Size :5x13x8mm ，Bore Diameter :5mm |
| SAPFL203 Bearing units | Brand:KOYO ，d:17 mm ，Width :28.5mm ，Bore Diameter :17mm ，A:14 mm |
| IJ123038 Angular contact ball bearings | I:40.46 mm ，F:142 mm ，P:106 mm ，E:66.87 mm ，Brand:ILJIN |
| BT4B 332668/HA1 Tapered roller bearings | Outer Diameter :323.452mm ，Width :414.338mm ，Size :447.675x323.452x414.338mm ，Bore Diameter :447.675mm ，Brand:SKF |
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