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Description
NK55/25-XL INATechnische Basisdaten Hersteller: INA Synonym: 0507544080000 NB556825 NK55 25 RNA556825 TAF556825 Auendurchmesser: 68 mm Bezugsdrehzahl: 5. 200 1 min Gewicht: 191 Gramm Grenzdrehzahl: 8. 400 1 min Herstellungsland: Slowakei Lubrikation: Umfangsnut Schmiernut vorhanden(en) Zolltarifnummer: 8482 4000 Erweiterte technische Daten ueres Breitenmae: mm 68,00 Begrenzungsdrehzahl (n G) "8400. 0000" ueres Breitenmae:(B) mm 25,00 Durchmesser Unterrollen (F w)
Technische Basisdaten
| Hersteller: INA |
| Synonym: 0507544080000 NB556825 NK55/25 RNA556825 TAF556825 |
| Außendurchmesser: 68 mm |
| Bezugsdrehzahl: 5.200 1/min |
| Gewicht: 191 Gramm |
| Grenzdrehzahl: 8.400 1/min |
| Herstellungsland: Slowakei |
| Lubrikation: Umfangsnut Schmiernut vorhanden(en) |
| Zolltarifnummer: 8482 4000 |
Erweiterte technische Daten
| Äußeres Breitenmaße: mm 68,00 |
| Begrenzungsdrehzahl (n G) "8400.0000" |
| Äußeres Breitenmaße:(B) mm 25,00 |
| Durchmesser Unterrollen (F w) mm 55,00 |
| ECLASS number 23-05-09-07 |
| ECLASS2 number 23-05-09-07 |
| Einzelgewicht in (kg): 0.191 |
| Innenmaße: mm 55,00 |
| Radial Dynamic Load Rating Cr (N) 45500 |
| Radial Static Load Rating C0r (N) 82000 |
| Referenzdrehzahl (n ϑr) "5200.0000" |
| XL X-Life |
| Betriebstemperatur max.: 120 °C |
| Betriebstemperatur min.: -30 °C |
| C 0r 82.000 N Statische Tragzahl, radial |
| C r 45.500 N Dynamische Tragzahl, radial |
| C ur 14.300 N Ermüdungsgrenzbelastung, radial |
| D 68 mm Außendurchmesser |
| Dynamische Tragzahl, radial: 45.500 N |
| Ermüdungsgrenzbelastung, radial: 14.300 N |
| Minimaler Kantenabstand: 0,6 mm |
| Statische Tragzahl, radial: 82.000 N |
| T max 120 °C Betriebstemperatur max. |
| T min -30 °C Betriebstemperatur min. |
| n G 8.400 1/min Grenzdrehzahl |
| n ϑr 5.200 1/min Bezugsdrehzahl |
| r min 0,6 mm Minimaler Kantenabstand |
| ≈m 191,05 g Einzelgewicht |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
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- Please click here for more details>>> Return & Exchange Policy
4.7 ★★★★★
Based on 200 reviews
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Product Reviews
★★★★★ 5
Awesome Pillow!!!
Size: Queen, Number of Items: 1
This pillow is Amazing!!! So Great to sleep on. I finally can get a good night's sleep!!! Its very soft and comfortable. I also haven’t gotten up with a stiff neck in the morning either!!!
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Reviewed in the United States on May 16, 2026
★★★★★ 5
Love them!!
Size: Queen, Number of Items: 2, Size: Queen, Number of Items: 2
Ok I normally don't leave reviews but I had to on this pillow. I was looking forever for a pillow and was nervous about buying one because you know how that usually goes when it comes to buying pillows. They arrived compressed but when you unwrap them they blow up to be a heavy duty pillow. Firm but not too firm. I don't like super soft pillows that you can roll up in a ball with one hand, I like a pillow that gives support and these do just that. They are cooling as well they are pretty for a pillow with the unique design. If you are in the market for a pillow and reading this THEN BUY THIS PILLOW & come back to tell me thank you. I promise you will NOT be disappointed. No I didn't get paid to say any of this. I wanted to give a honest review where it deserves one! You will not be disappointed! Thanks for the fast over night shipping as well. Not to mention the pricing is on point. I can say right now you will not find 2 pillows of this quality & price.
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Reviewed in the United States on April 1, 2026
★★★★★ 5
Perfect pillows
Size: Queen, Number of Items: 2
Soft, but durable. Comfortable and cool during sleep.
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Reviewed in the United States on May 17, 2026
★★★★★ 4
Best pillow I’ve ever tried—hands down!
Size: Queen, Number of Items: 2
I’ve gone through a bunch of pillows over the years, but this BETU Cooling Pillow is by far the best one I’ve ever used. I sleep in literally every position—on my back, stomach, and sides—and this pillow works perfectly no matter how I’m laying.
It really does have a cooling effect, which I love as a hot sleeper. Just make sure your room is cool too, and it makes a big difference. It came vacuum-packed, but it fully expanded within just a few hours. I was able to sleep on it the same day it arrived, and it was super comfy right from the start.
I also washed and dried the pillowcase before using it, and it came out looking and feeling great—no shrinking or damage at all. Honestly, I look forward to going to bed every night now just because of this pillow. It’s supportive, comfortable, and totally worth it!
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Reviewed in the United States on February 21, 2026
★★★★★ 5
Excellent pillows!
Size: Queen, Number of Items: 2
This pack came with 2 pillows, one firm and one that was flatter and squishy. I absolutely love the flatter one! Most comfortable pillow I've ever used! The firm one was a bit too much for me, but my husband loves it.
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Reviewed in the United States on March 28, 2026