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Description
21311 eae4c3 nsk21311EAE4 d 55 mm Bore diameter D 120 mm Outside diameter B 29 mm Width r (min.) 2 mm Chamfer dimension Cr 178000 N Basic dynamic load rating C0r 174000 N Basic static load rating Thermal Speed Rating (Oil bath) 5300 min 1 Oil bath lubrication subject to conditions outlined in ISO 15312 Mechanical (forced circulation oil) 8000 min 1 Properly designed and controlled forced circulation oil lubrication Grease 4500 min 1 Grease lubrication Oil (Oil bath)
| 21311EAE4 |
| d | 55 | mm | Bore diameter |
| D | 120 | mm | Outside diameter |
| B | 29 | mm | Width |
| r (min.) | 2 | mm | Chamfer dimension |
| Cr | 178000 | N | Basic dynamic load rating |
| C0r | 174000 | N | Basic static load rating |
| Thermal Speed Rating (Oil-bath) | 5300 | min-1 | Oil-bath lubrication subject to conditions outlined in ISO 15312 |
| Mechanical (forced-circulation oil) | 8000 | min-1 | Properly designed and controlled forced-circulation oil lubrication |
| Grease | 4500 | min-1 | Grease lubrication |
| Oil (Oil-bath) | 5600 | min-1 | Oil-bath lubrication |
| da (min.) | 65 | mm | Diameter of shaft abutment (min) |
| da (max.) | 72 | mm | Diameter of shaft abutment |
| Da (min.) | 98 | mm | Diameter of housing abutment |
| Da (max.) | 110 | mm | Diameter of housing abutment |
| ra (max.) | 2 | mm | Radius of shaft or housing fillet |
| e | 0.23 | Constant | |
| Y2 | 4.4 | Axial load Factors | |
| Y3 | 3 | Axial load Factors | |
| Y0 | 2.9 | Axial load Factors |
| Mass approx. | 1.58 | kg | Mass approx. |
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- Free Standard Shipping on $100+ Orders to the USA.
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4.6 ★★★★★
Based on 9 reviews
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Product Reviews
★★★★★ 3
Just aren’t large enough.
This is a great idea, and I can wear socks over them and not notice they are there. I just wish they came in a larger size. When I put cream around the edges of my heels where the cracks always are, I cannot stretch the socks wide enough to clear the heel without smearing the cream onto my fingers or on the sock cuff. They do stay in place and aren't squishy at all when walking. They smell good too. The price is right. I wore them overnight and my heels were indeed much softer and smoother than before, and felt moist (tacky) where the cream had been. So they do an amazing job, but after using them six nights, they just aren’t large enough for me to put on without a hassle.
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Reviewed in the United States on April 28, 2024
★★★★★ 5
these really work
saved my poor cracking heels
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Reviewed in the United States on April 12, 2026
★★★★★ 5
yoga socks
I’m a weirdo and don’t like to walk around barefoot. So, these help me feel like I’ve got socks on while allowing my toes to breathe. I just wear them around the house. They can work as flipflop socks for a quick trip to the mailbox.
I do like to randomly hit the occasional yoga pose so the grippiness is helpful in that regard. I have wide feet and have not found the toe openings to be tight or any other fit problems. So far they have survived standard machine washing.Unfortunately, when I first tried on a pair, the material started to rip. I wear a 7-7.5 shoe size. I think these are made for smaller feet. The material is thin and doesn't stretch. The colors are pretty and it's a good price. I have to return them due to being too small. If you have smaller feet, they are worth trying.
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Reviewed in the United States on April 17, 2026
★★★★★ 5
My Favorite Style of Yoga Socks — I Love These
There are so many types of yoga socks out there, but this style is my absolute favorite. These toeless yoga socks are perfect: no individual toe slots, crew‑length coverage, and solid grippies on the bottom. I love them so much. They stay put, they feel great, and they give me the barefoot freedom I want without slipping around on the mat. Total win.
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Reviewed in the United States on April 7, 2026
★★★★★ 5
Great find!
I used this on a prom bouquet and it came out beautiful. Soft dainty sparkles for the perfect shimmer. A convenient small aerosol container that I gave to my son’s girlfriend in case she wanted to touch it up or use it herself. I love the fact that it’s still stuck on my crafting desk. Very affordable and it served its purpose plus some!
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Reviewed in the United States on May 14, 2026