Attributes

Brand	-
Category	Industrial Small Parts / Bearings & Bushings
Origin	-
Material	Chrome Steel GCr15
Seal Type	ZZ (Metal) or 2RS (Rubber)
Precision Rating	ABEC-1 / ABEC-3 / ABEC-5
Cage Material	Steel or Nylon Reinforced
Lubrication	Pre-lubricated with Grease
Bearing Series	618 Ultra Thin Section
Inner Diameter	2mm to 9mm (Model Dependent)
Outer Diameter	5mm to 19mm (Model Dependent)
Width	2.5mm to 5mm (Model Dependent)
Package Quantity	10 Pieces per Pack

5 reviews

Anonymous

Apr 16, 2026

Rating: 5/5

Fast shipping

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

Anonymous

Apr 09, 2026

Rating: 5/5

Exact fit for 618/5

Replaced old bearings in my motor. Spin is very free and seems durable.

Anonymous

Apr 08, 2026

Rating: 5/5

Great for robotics

Using these in a small robotic arm. Very reliable under light load conditions.

Anonymous

Mar 16, 2026

Rating: 4/5

Good quality, slight noise

Works well for the price. One bearing was slightly noisy but the rest are great for hobby use.

Anonymous

Feb 15, 2026

Rating: 5/5

Perfect for my drone build

Smooth rotation and exact dimensions. Fit perfectly into the motor housing without any force.

5 FAQ

Q: Do they come pre-lubricated?

A: Yes, all bearings are pre-lubricated with standard grease.

Q: Are these compatible with standard 618 series housings?

A: Yes, these follow standard 618 dimension specifications.

Q: Is the seal rubber or metal?

A: We offer both 2RS (rubber) and ZZ (metal) options. Please check selection.

Q: What is the maximum RPM for the 618/9?

A: Depending on lubrication and load, typically up to 30,000 RPM.

Q: Can I mix sizes in one order?

A: Please select specific sizes from the dropdown menu individually.

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