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- USA
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Ships within 48 hours · Estimated delivery Jul 13 - Jul 18
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Description
21309 EAKE4 NSK21309EAKE4 d 45 mm Bore diameter D 100 mm Outside diameter B 25 mm Width r (min.) 1. 5 mm Chamfer dimension Cr 149000 N Basic dynamic load rating C0r 144000 N Basic static load rating Thermal Speed Rating (Oil bath) 6000 min 1 Oil bath lubrication subject to conditions outlined in ISO 15312 Mechanical (forced circulation oil) 9000 min 1 Properly designed and controlled forced circulation oil lubrication Grease 5000 min 1 Grease lubrication Oil (Oil
| 21309EAKE4 |
| d | 45 | mm | Bore diameter |
| D | 100 | mm | Outside diameter |
| B | 25 | mm | Width |
| r (min.) | 1.5 | mm | Chamfer dimension |
| Cr | 149000 | N | Basic dynamic load rating |
| C0r | 144000 | N | Basic static load rating |
| Thermal Speed Rating (Oil-bath) | 6000 | min-1 | Oil-bath lubrication subject to conditions outlined in ISO 15312 |
| Mechanical (forced-circulation oil) | 9000 | min-1 | Properly designed and controlled forced-circulation oil lubrication |
| Grease | 5000 | min-1 | Grease lubrication |
| Oil (Oil-bath) | 6300 | min-1 | Oil-bath lubrication |
| da (min.) | 54 | mm | Diameter of shaft abutment (min) |
| da (max.) | 65 | mm | Diameter of shaft abutment |
| Da (min.) | 89 | mm | Diameter of housing abutment |
| Da (max.) | 91 | mm | Diameter of housing abutment |
| ra (max.) | 1.5 | mm | Radius of shaft or housing fillet |
| e | 0.23 | Constant | |
| Y2 | 4.3 | Axial load Factors | |
| Y3 | 2.9 | Axial load Factors | |
| Y0 | 2.8 | Axial load Factors |
| Mass approx. | 0.96 | kg | Mass approx. |
| Adapter | H309X | Adapter | |
| Withdrawal sleeve | AH309 | Withdrawal sleeve |
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
4.7 ★★★★★
Based on 482 reviews
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Product Reviews
★★★★★ 5
Apple laptop
Capacity: 16GB Unified Memory | 512GB SSD Storage, Color: Starlight, Set: Without AppleCare+
I’ve been using this MacBook Air for a few weeks now and honestly I’m very impressed with the quality and performance. It’s super lightweight, fast, and the battery lasts all day without any problems. The screen quality is beautiful and everything runs smoothly, even when I have multiple apps open at the same time.
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Reviewed in the United States on May 22, 2026
★★★★★ 5
Worth the investment
Capacity: 16GB Unified Memory | 512GB SSD Storage, Color: Sky Blue, Set: Without AppleCare+
I don't usually write reviews, but I recently bought this computer and I'm loving it. I previously had an M2 2023 Macbook Air that I got water in and fried. This essentially does all the same things, but cooler. It also has a bigger screen, which is perfect for me since I do a lot of work on my computer and constantly have a million tabs open. I'm also a student, so there's that. No complaints! The battery life is great and much better than my old computer. The color is a beautiful blue, which I've never seen before and I think is quite unique. I've gotten compliments on it. It also runs much faster and for some reason connects better to my crappy printer! Win all around!
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Reviewed in the United States on May 6, 2026
★★★★★ 5
Impressive MacBook Air
Capacity: 16GB Unified Memory | 512GB SSD Storage, Color: Midnight, Set: Without AppleCare+
Ordered via Prime and the Mac arrived the next day. Setup was easy. The M5 chip flies but my usage is basically routine functions no heavy usage. Everything is speedy. This computer is an upgrade from my 2017 MacBook Pro and a 2020 iMac. Both of those old Macs are still functional. I've been using Macs since the Apple IIC and II GS. Over 35 years ago. The keyboard is one of the best I've used. I loved the 2017 MBP keyboard because if had a great feel. Others since then were not comfortable until this keyboard on the MB Air. Booting up is fast. For me the battery will last for four days before recharging. I really like the Mag Safe charger. Easy on and easy off especially if you happen to forget you're charging and pull the computer away from the connection. Connection just drops off. The touchpad is not as sensitive as others. If I accidentally rest my finger or fingers on the pad it doesn't execute an unwanted command. You have to use a little pressure to execute the task. No problems while typing and having the touchpad sending you off into space somewhere. A great Mac upgrade.
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Reviewed in the United States on May 23, 2026
★★★★★ 5
Beautiful, Super Thin, Fast
Capacity: 16GB Unified Memory | 512GB SSD Storage, Color: Silver, Set: Without AppleCare+
It’s beautiful, super thin, very fast, and the screen size reminds me of the large iPad Pro. I have to get used to not touching the screen like you do with an iPad. You must use a mouse or your finger. Also programs work differently than apps. Make sure you are ready for that if you are only used to using an iPad.
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Reviewed in the United States on May 27, 2026
★★★★★ 5
Awesome
Capacity: 16GB Unified Memory | 512GB SSD Storage, Color: Midnight, Set: Without AppleCare+
This computer is great, it's fast, reliable, and it has a great amount of screen real estate. It's great for people who have trouble reading or people who have to multitask.
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Reviewed in the United States on May 5, 2026