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Description
NA4840-XL INATechnische Basisdaten Hersteller: INA Synonym: 0507685570000 NA4840 Bezugsdrehzahl: 1. 250 1 min Gewicht: 5769 Gramm Grenzdrehzahl: 2. 150 1 min Innendurchmesser: 200 mm Lubrikation: Umfangsnut Schmiernut vorhanden(en) Zolltarifnummer: 8482 4000 Erweiterte technische Daten ueres Breitenmae: mm 250,00 Begrenzungsdrehzahl (n G) "2150. 0000" ueres Breitenmae:(B) mm 50,00 ueres Breitenmae:(b) mm 50,00 ECLASS number 23 05 09 07 ECLASS2 number 23 05 09 07
Technische Basisdaten
| Hersteller: INA |
| Synonym: 0507685570000 NA4840 |
| Bezugsdrehzahl: 1.250 1/min |
| Gewicht: 5769 Gramm |
| Grenzdrehzahl: 2.150 1/min |
| Innendurchmesser: 200 mm |
| Lubrikation: Umfangsnut Schmiernut vorhanden(en) |
| Zolltarifnummer: 8482 4000 |
Erweiterte technische Daten
| Äußeres Breitenmaße: mm 250,00 |
| Begrenzungsdrehzahl (n G) "2150.0000" |
| Äußeres Breitenmaße:(B) mm 50,00 |
| Äußeres Breitenmaße:(b) mm 50,00 |
| ECLASS number 23-05-09-07 |
| ECLASS2 number 23-05-09-07 |
| Einzelgewicht in (kg): 5.85 |
| Innenmaße: mm 200,00 |
| Radial Dynamic Load Rating Cr (N) 260000 |
| Radial Static Load Rating C0r (N) 720000 |
| Referenzdrehzahl (n ϑr) "1250.0000" |
| XL X-Life |
| Betriebstemperatur max.: 120 °C |
| Betriebstemperatur min.: -30 °C |
| C 0r 720.000 N Statische Tragzahl, radial |
| C r 260.000 N Dynamische Tragzahl, radial |
| C ur 104.000 N Ermüdungsgrenzbelastung, radial |
| Dynamische Tragzahl, radial: 260.000 N |
| Ermüdungsgrenzbelastung, radial: 104.000 N |
| Minimaler Kantenabstand: 1,5 mm |
| Statische Tragzahl, radial: 720.000 N |
| T max 120 °C Betriebstemperatur max. |
| T min -30 °C Betriebstemperatur min. |
| axialer Verschiebeweg: 1,5 mm |
| n G 2.150 1/min Grenzdrehzahl |
| n ϑr 1.250 1/min Bezugsdrehzahl |
| r min 1,5 mm Minimaler Kantenabstand |
| s 1,5 mm axialer Verschiebeweg |
| ≈m 5,769 kg Einzelgewicht |
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Exchange/Return Notes
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4.1 ★★★★★
Based on 21 reviews
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Product Reviews
★★★★★ 5
The really work!
Bought these or a friend with severely dry cracked feet. The change was significant and immediate. They wore them around the house for a day and that night they could already feel the difference.
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Reviewed in the United States on January 12, 2026
★★★★★ 5
Fabulously bizarre and effective
These silicone socks have to be the strangest item I have ever ordered from Amazon. However strange they are, I was pleasantly surprised with them.
My order came with two pairs, and I took one pair out to wash before use. I laughed at handling them then because they were a cross between hospital socks and leftover mannequin skin…trippy.
The socks dried fast, so I put on foot lotion and put the socks on. The socks are beige skin tones that cover the entire foot up to the ankle, basically booties.
The silicone is very soft and makes putting on and taking off the socks easy. They are also surprisingly easy to walk around in because the bottoms have grips, again, like hospital socks. I walked on tile, hardwood, and carpet with no slipping. The booties also stayed in place with no issues.
I was concerned my feet would sweat, but that didn't happen. I was able to wear them for 3 hours without sweaty feet.
When I took them off, my feet were a lot more soft than before or if I had used regular socks. For reference, my feet are not terrible, but the skin around my toes is dry and peeling from my picking(gross, I know).
The socks I got are a size large, which worried me because they are big, but the site said for my shoe size (9) that's what I should order, and they were right. They are the perfect size and stretchy for room.
I can't believe how cool and well-thought-out these socks are, on top of working. Honestly, these are among the top 20 favorite items I've ordered from Amazon. They may look incredibly strange, and they are, but they work wonders.
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Reviewed in the United States on June 5, 2025
★★★★★ 3
Not well made
I have used these for 2 weeks now and one of them has a hole in the sole...
I won't ever buy them again
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Reviewed in the United States on July 15, 2025
★★★★★ 5
Enables the person to move around while wearing.
These silicon socks look a bit odd at first glance but they work great and best of all, any lotions and oily creams are contained on the inside so you can walk around. They are very soft. I haven't had them long so I can't comment on durability, but they are not made of lightweight material.
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Reviewed in the United States on March 10, 2026
★★★★★ 5
They Work
Husband struggles with cracking feet, he has tried so many home remedies these work great to keep the moisturizer on and the carpet dry!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 25, 2026
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