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Description
nk25 20 inaTechnische Basisdaten Hersteller: INA Synonym: 0507540920000 NB253320 NK25 20 RNA253320 TAF253320 Auendurchmesser: 33 mm Bezugsdrehzahl: 10. 400 1 min Dichtring: G25X33X4 Gewicht: 43 Gramm Grenzdrehzahl: 17. 800 1 min Herstellungsland: Slowakei Lubrikation: Umfangsnut Schmiernut vorhanden(en) Zolltarifnummer: 8482 4000 Erweiterte technische Daten ueres Breitenmae: mm 33,00 Begrenzungsdrehzahl (n G) "17800. 0000" ueres Breitenmae:(B) mm 20,00
Technische Basisdaten
| Hersteller: INA |
| Synonym: 0507540920000 NB253320 NK25/20 RNA253320 TAF253320 |
| Außendurchmesser: 33 mm |
| Bezugsdrehzahl: 10.400 1/min |
| Dichtring: G25X33X4 |
| Gewicht: 43 Gramm |
| Grenzdrehzahl: 17.800 1/min |
| Herstellungsland: Slowakei |
| Lubrikation: Umfangsnut Schmiernut vorhanden(en) |
| Zolltarifnummer: 8482 4000 |
Erweiterte technische Daten
| Äußeres Breitenmaße: mm 33,00 |
| Begrenzungsdrehzahl (n G) "17800.0000" |
| Äußeres Breitenmaße:(B) mm 20,00 |
| Durchmesser Unterrollen (F w) mm 25,00 |
| ECLASS number 23-05-09-07 |
| ECLASS2 number 23-05-09-07 |
| Einzelgewicht in (kg): 0.042 |
| Innenmaße: mm 25,00 |
| Radial Dynamic Load Rating Cr (N) 21300 |
| Radial Static Load Rating C0r (N) 30500 |
| Referenzdrehzahl (n ϑr) "10400.0000" |
| XL X-Life |
| Betriebstemperatur max.: 120 °C |
| Betriebstemperatur min.: -30 °C |
| C 0r 30.500 N Statische Tragzahl, radial |
| C r 21.300 N Dynamische Tragzahl, radial |
| C ur 5.400 N Ermüdungsgrenzbelastung, radial |
| D 33 mm Außendurchmesser |
| Dichtring 2: SD25X33X4 |
| Dynamische Tragzahl, radial: 21.300 N |
| Ermüdungsgrenzbelastung, radial: 5.400 N |
| G25X33X4 Dichtring |
| Minimaler Kantenabstand: 0,3 mm |
| SD25X33X4 Dichtring 2 |
| Statische Tragzahl, radial: 30.500 N |
| T max 120 °C Betriebstemperatur max. |
| T min -30 °C Betriebstemperatur min. |
| n G 17.800 1/min Grenzdrehzahl |
| n ϑr 10.400 1/min Bezugsdrehzahl |
| r min 0,3 mm Minimaler Kantenabstand |
| ≈m 41,32 g Einzelgewicht |
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Exchange/Return Notes
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4.5 ★★★★★
Based on 26 reviews
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Product Reviews
★★★★★ 5
Bouncy and durable
Color: Four colors, Size: 5cm (ball only), Color: Four colors, Size: 5cm (ball only)
These balls are awesome - bouncy and super durable for my little guy!
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Reviewed in the United States on May 17, 2026
★★★★★ 5
Great quality
Color: Four colors, Size: 5cm (ball only)
I was very surprised that these are as good as the chuck it balls. I have a super chewer and he’s tears balls up except for chuck its and he can’t tear these up.
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Reviewed in the United States on May 15, 2026
★★★★★ 5
Happy pup
Color: Four colors, Size: 5cm (ball only)
Small but bouncy. Pupper loves them.
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Reviewed in the United States on May 3, 2026
★★★★★ 5
Awesome price for quality balls
Color: Four colors, Size: 5cm (ball only)
These balls are super bouncy and durable. My dog loves them and for the price these are totally worth it! I think they are as durable as nerf balls and equal in size, and much cheaper!
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Reviewed in the United States on November 19, 2025
★★★★★ 1
Rope comes out at the slightest force. Pointless tug toy!
Color: Four colors, Size: 6cm (with rope)
If your dog pulls on these (and why wouldn’t he?), the rope immediately comes out. Turns out they just fuse the ends of the nylon rope together, which is no match for a dog playing tug. Any dog, any level of pulling will dismantle these.
We’ve managed to reinsert the rope to a couple of these and KNOT it, which gives you a shorter rope but a toy that can withstand some play. But if I had wanted a DIY toy, I’d have used the balls and rope I already own.
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Reviewed in the United States on December 11, 2025