Attributes

Brand	-
Category	Industrial Small Parts / Bearings & Bushings
Origin	-
Brand	Wafangdian
Model Series	684/685/618 Miniature
Material	GCr15 Chrome Steel
Inner Diameter	4mm to 6mm
Outer Diameter	9mm to 13mm
Width	2.5mm to 4mm
Precision Grade	ABEC-5 (P5)
Seal Type	ZZ (Metal) or 2RS (Rubber)
Cage Material	Steel
Application	Motors, Robotics, Drones

5 reviews

Anonymous

Apr 18, 2026

Rating: 5/5

Precise dimensions

Measured with calipers and they are spot on. Great for precision assemblies.

Anonymous

Apr 16, 2026

Rating: 4/5

Works well in 3D printers

Using these for idler pulleys. They handle the tension well without noise.

Anonymous

Apr 04, 2026

Rating: 5/5

Smooth operation for FPV drones

These bearings fit perfectly in my motor bells. Very smooth spin with minimal friction.

Anonymous

Mar 03, 2026

Rating: 4/5

Good quality for the price

Solid bearings. One was slightly stiff out of the box but loosened up after use.

Anonymous

Feb 06, 2026

Rating: 5/5

Fast delivery

Arrived quickly and well packaged. No rust or damage on any of the units.

5 FAQ

Q: Can these handle high RPM speeds?

A: Yes, these are designed for high-speed miniature motor applications.

Q: Is the ZZ seal removable?

A: The metal shields are pressed on and are not intended to be removed.

Q: Do you offer bulk discounts?

A: Please contact us directly for orders exceeding 100 units.

Q: What is the exact ID for the 685 model?

A: The 685 model has an inner diameter of 5mm.

Q: Are these bearings pre-lubricated?

A: Yes, they come with standard grease lubrication from the factory.

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