A
Anonymous
Apr 15, 2026
Rating: 3/5
Okay but noisy
Worked fine after adding some extra lubrication. Out of the box they were a bit stiff.
Description
Miniature Bearings V623 V624ZZ U623ZZ U624ZZ U604ZZ U-Groove V-Groove Wire Guide Pulleys
Reviews
Attributes
| Brand | - |
| Category | Industrial Small Parts / Bearings & Bushings |
| Origin | - |
| Material | Chrome Steel / Stainless Steel |
| Bearing Type | Miniature Deep Groove Ball Bearing |
| Shield Type | ZZ (Metal Shielded Both Sides) |
| Groove Profile | U-Groove and V-Groove Options |
| Inner Diameter (ID) | 3mm to 4mm (Model Dependent) |
| Outer Diameter (OD) | 10mm to 13mm (Model Dependent) |
| Width | 4mm to 5mm (Model Dependent) |
| Precision Rating | ABEC-1 |
| Operating Temperature | -20°C to +120°C |
| Package Quantity | 10 Pieces per Model |
5 reviews
A
Anonymous
Apr 12, 2026
Rating: 5/5
Great for 3D Printers
Smooth operation and perfect fit for my cable management setup. Highly recommend for DIY projects.
A
Anonymous
Apr 06, 2026
Rating: 5/5
Perfect cable routing
Reduced noise significantly in my robotic arm assembly. The V-groove holds the cable securely.
A
Anonymous
Mar 21, 2026
Rating: 5/5
Exactly as described
Dimensions match the spec sheet perfectly. Fast shipping and well packaged.
A
Anonymous
Mar 13, 2026
Rating: 4/5
Good value
Quality is solid for the price. One bearing was slightly tight but loosened up after use.
5 FAQ
Q: What is the maximum load capacity?
A: These are miniature bearings intended for light-duty applications such as cable routing and low torque systems.
Q: Are these bearings pre-lubricated?
A: Yes, they come with a light factory grease suitable for general purpose use.
Q: Do you sell mounting hardware separately?
A: Mounting brackets and shafts are sold separately in the hardware section of our store.
Q: Will these fit a 3mm shaft?
A: Models V623 and U623ZZ are designed specifically for a 3mm inner diameter shaft.
Q: What cable diameter fits the U-groove best?
A: The U-groove is designed to accommodate cables between 1mm and 2mm in diameter for optimal tracking.
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