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Ships within 48 hours · Estimated delivery Jul 25 - Jul 30
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Description
21308 eae4 nsk21308EAE4 d 40 mm Bore diameter D 90 mm Outside diameter B 23 mm Width r (min.) 1. 5 mm Chamfer dimension Cr 118000 N Basic dynamic load rating C0r 111000 N Basic static load rating Thermal Speed Rating (Oil bath) 6700 min 1 Oil bath lubrication subject to conditions outlined in ISO 15312 Mechanical (forced circulation oil) 11000 min 1 Properly designed and controlled forced circulation oil lubrication Grease 6000 min 1 Grease lubrication Oil (Oil
| 21308EAE4 |
| d | 40 | mm | Bore diameter |
| D | 90 | mm | Outside diameter |
| B | 23 | mm | Width |
| r (min.) | 1.5 | mm | Chamfer dimension |
| Cr | 118000 | N | Basic dynamic load rating |
| C0r | 111000 | N | Basic static load rating |
| Thermal Speed Rating (Oil-bath) | 6700 | min-1 | Oil-bath lubrication subject to conditions outlined in ISO 15312 |
| Mechanical (forced-circulation oil) | 11000 | min-1 | Properly designed and controlled forced-circulation oil lubrication |
| Grease | 6000 | min-1 | Grease lubrication |
| Oil (Oil-bath) | 7500 | min-1 | Oil-bath lubrication |
| da (min.) | 49 | mm | Diameter of shaft abutment (min) |
| da (max.) | 55 | mm | Diameter of shaft abutment |
| Da (min.) | 75 | mm | Diameter of housing abutment |
| Da (max.) | 81 | mm | Diameter of housing abutment |
| ra (max.) | 1.5 | mm | Radius of shaft or housing fillet |
| e | 0.25 | Constant | |
| Y2 | 3.9 | Axial load Factors | |
| Y3 | 2.7 | Axial load Factors | |
| Y0 | 2.6 | Axial load Factors |
| Mass approx. | 0.73 | kg | Mass approx. |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.5 ★★★★★
Based on 13 reviews
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Product Reviews
★★★★★ 5
My favorite
Size: Medium, Color: Opal Blue/White/Cruise Blue (3-pairs)
My favorite socks, too bad under armour discontinued the cotton blend fabric and went to 100% polyester 😠
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 16, 2026
★★★★★ 5
Comfortable
Size: 6-10, Color: Halo Gray/Assorted
These are my favorite socks!
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Reviewed in the United States on September 22, 2025
★★★★★ 5
Great fit
Size: Medium, Color: White
Perfect fit and they don't slide off the back of your ankle.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 16, 2026
★★★★★ 5
Best socks!
Size: Medium, Color: Blue
I love these socks! They last for years and they fit so nicely on my feet. I love that I can wear the in tennis shoes or wool boots and they never move!
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Reviewed in the United States on October 21, 2025
★★★★★ 1
TOO SMALL
Size: Medium, Color: Blue
Nice socks, but they are way too small. Says they fit size 6 - 10. I kept 3 ( I wear size 8) and gave 3 to my daughter (size 8.5). We both agreed that they were just too small.
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Reviewed in the United States on May 12, 2026