21308EAKE4 NSK SIR 8.91 40x90x23mm Spherical roller bearings
| Bearing number | 21308EAKE4 |
| Size (mm) | 40x90x23 |
| Brand | NSK |
| Bore Diameter (mm) | 40 |
| Outer Diameter (mm) | 90 |
| Width (mm) | 23 |
| d | 40 mm |
| D | 90 mm |
| B | 23 mm |
| C | 23 mm |
| r min. | 1.5 mm |
| da min. | 49 mm |
| da max | 54 mm |
| Da min | 75 mm |
| Da max. | 81 mm |
| ra max. | 1.5 mm |
| Weight | 0.73 Kg |
| Basic dynamic load rating (C) | 94.5 kN |
| Basic static load rating (C0) | 111 kN |
| (Grease) Lubrication Speed | 5300 r/min |
| (Oil) Lubrication Speed | 7000 r/min |
| Calculation factor (e) | 0.25 |
| Calculation factor (Y0) | 2.6 |
| Calculation factor (Y2) | 3.9 |
| Category | Roller Bearings |
| BDI Inventory | 0.0 |
| Manufacturer Name | NSK |
| Minimum Buy Quantity | N/A |
| Weight / Kilogram | 0.75 |
| EAN | 0029176630910 |
| Product Group – BDI | B04311 |
| Y3 | 2.7 |
| hidYobi | 21308EAKE4 |
| LangID | 1 |
| Y1 | 2.6 |
| D_ | 90 |
| Y2 | 3.9 |
| Macha rpm | 11000 |
| B_ | 23 |
| CAD | https://service.web2cad.co.jp/pcom/maker_login.php?Maker=NSK_RB&language=ja&info=nsk_rb/roller_bearings/spherical_rb/tapered_bore_asmtab.prj&varset={STAN=HPS}.{ORDER=21308EAKE4}.{SD=40}.{D=90}.{B=23.0}.{R=1.5}.{CR1=118000}.{COR1=111000}.{LT=6700}.{LM=11000}.{LG=6000}.{LO=7500}.{DA1=49}.{DA2=54}.{DA3=81}.{DA4=75}.{RA=1.5}.{E=0.25}.{Y2=3.9}.{Y3=2.7}.{Y0=2.6}.{MASS=0.73} |
| da min | 49 |
| hidTable | ecat_NSSPHR |
| Oil rpm | 7500 |
| Y0 | 2.6 |
| mass | 0.73 |
| GRS rpm | 6000 |
| ra | 1.5 |
| TSR rpm | 6700 |
| C0 | 111 |
| DE_ | 76.9 |
| X0 | 1 |
| Prod_Type3 | SRB_CTB_TB |
| X1 | 1 |
| X2 | 0.67 |
| SIR | 8.91 |
| e | 0.25 |
| DA_ | 10.35 |
| bomp | 21308EAKE4 |
| Z_ | 18 |
| ALP2 | 38 |
| ALP1 | 9 |
| ALP3 | 0 |
| D_a max | 81 |
| D_a min | 75 |
| yobi | 21308EAKE4 |
| HPS | HPS |
| ALPHA_ | 0.168 |
| SDM_ | 66.696 |
| r | 1.5 |
| KBRG | 2328 |
| SBRG | 3 |
| DI_ | 56.492 |
| calcUrl | /BearingGuide/html/calculation.jsp |
Detailed Parameters
parameter：
| CRF-43.86571 Wheel bearings | Size :42x143x103mm ，Width :103.000mm ，Brand:CRAFT ，Bore Diameter :42.000mm ，Outer Diameter :143.000mm |
| RME90 Bearing units | Bore Diameter :90mm ，U:50.5 mm ，Brand:INA ，d:90 mm ，Z:190 mm ，Thread (Q):Rp1/8 |
| 22356-K-MB-W33 Spherical roller bearings | Bore Diameter :280mm ，Width :175mm ，Brand:NKE ，Size :280x580x175mm ，Outer Diameter :580mm ，d:280 mm |
| 6207DD Deep groove ball bearings | Brand:KBC ，Width :17mm ，Bore Diameter :35mm ，Size :35x72x17mm ，d:35 mm ，Outer Diameter :72mm |
| SI10E Plain bearings | Bore Diameter :10mm ，Brand:SKF ，d2:30 mm ，d4:16 mm ，d:10 mm |
| VKBA 3407 Wheel bearings | Designation SNR:R140.81 ，Brand:SKF ，Designation FAG:713630550 ，Designation SX:CX543 |
| GE45ET-2RS Plain bearings | Outer Diameter :68mm ，Width :32mm ，Size :45x68x32mm ，Bore Diameter :45mm ，Brand:LS |
| 130070/130127H Tapered roller bearings | Size :70x127x71mm ，Outer Diameter :127mm ，Width :71mm ，Bore Diameter :70mm ，Brand:Gamet |
| 51206 Thrust ball bearings | Width :16mm ，Size :30x52x16mm ，Outer Diameter :52mm ，Brand:FBJ ，Bore Diameter :30mm |
| 6219ZNR Deep groove ball bearings | Width :32mm ，Size :95x170x32mm ，Outer Diameter :170mm ，Bore Diameter :95mm ，Brand:NACHI |
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