Attributes

Brand	-
Category	Industrial Small Parts / Bearings & Bushings
Origin	-
Brand	NSK
Material	High Carbon Chrome Steel
Shield Type	ZZ (Metal) or DDU (Rubber)
Precision Grade	P5 (ABEC-5)
Country of Origin	Japan
Cage Material	Pressed Steel
Lubrication	Pre-greased for High Speed
Noise Level	Quiet Operation (Z1 Group)
Package Quantity	10 Pieces per Pack
Warranty	1 Year Manufacturer Warranty

5 reviews

Anonymous

Apr 05, 2026

Rating: 4/5

Great Quality, Pricey

No complaints about the performance. They are very precise and fit perfectly in my 3D printer build. Only giving 4 stars because they are a bit more expensive than alternatives.

Anonymous

Mar 30, 2026

Rating: 5/5

Smooth Ride

Upgraded my skateboard wheels with these 608ZZ bearings. They spin forever and handle the load well. Genuine Japanese quality is worth the extra cost.

Anonymous

Feb 13, 2026

Rating: 5/5

High RPM Capability

Using these in my RC car differential. They handle high RPMs without heating up. The preload seems just right out of the box. Highly recommended for serious hobbyists.

Anonymous

Feb 10, 2026

Rating: 5/5

Perfect for FPV Motors

These NSK bearings are incredibly smooth. I used the 608 size for my drone motors and the noise reduction is noticeable compared to generic brands. High speed performance is excellent.

Anonymous

Feb 08, 2026

Rating: 5/5

Genuine NSK Product

I was worried about fakes but these are the real deal. Laser etching is clean and packaging was secure. The 605 size fit my small electric motor perfectly.

5 FAQ

Q: Will the 608 fit standard skateboard wheels?

A: Yes, the 608 series is the standard size for most skateboard and longboard wheels, with an 8mm inner diameter.

Q: What is the difference between ZZ and DDU models?

A: ZZ models have metal shields on both sides, suitable for high speed. DDU models have rubber contact seals, offering better protection against dust and water but slightly higher friction.

Q: What is the maximum RPM for the 608 size?

A: For the 608 size, the limiting speed is approximately 20,000 RPM with grease lubrication, depending on the specific load and application conditions.

Q: Are these bearings genuine NSK products?

A: Yes, all our bearings are sourced directly from authorized distributors and are 100% genuine Japanese NSK products.

Q: Do these come pre-lubricated?

A: Yes, all bearings come pre-greased from the factory with high-speed lubricant suitable for immediate installation.

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