A
Anonymous
Apr 18, 2026
Rating: 5/5
Exact dimensions
Measured with calipers. The SMR138ZZ specs are accurate.
Description
Stainless Steel Bearing SMR93ZZ SMR148ZZ SMR137 SMR138 ZZ
Reviews
Attributes
| Brand | - |
| Category | Industrial Small Parts / Bearings & Bushings |
| Origin | - |
| Material | 440C Stainless Steel |
| Shield Type | ZZ (Double Metal Shield) |
| Precision Rating | ABEC-5 |
| Lubrication | Pre-greased |
| Cage Material | Steel |
| Noise Level | Low Noise (Z1) |
| Operating Temperature | -20°C to 120°C |
| Hardness | HRC 58-60 |
| Package Quantity | 10 Pieces |
| Common Applications | Drones, RC Cars, Fishing Reels |
5 reviews
A
Anonymous
Apr 15, 2026
Rating: 5/5
Smooth operation
These bearings fit perfectly in my drone motors. Very smooth spin.
A
Anonymous
Apr 03, 2026
Rating: 4/5
Fast shipping
Product arrived quickly. Bearings work well in my RC car differential.
A
Anonymous
Feb 24, 2026
Rating: 4/5
Good value
Quality is good for the price. One bearing was slightly stiff but others were great.
A
Anonymous
Feb 15, 2026
Rating: 5/5
Resistant to rust
Used them in a fishing reel modification. No signs of corrosion after months.
5 FAQ
Q: Can I use these in water?
A: They are stainless steel and resist corrosion, but ZZ shields are not waterproof.
Q: What grease is used inside?
A: They come pre-lubricated with standard bearing grease suitable for general use.
Q: Are these bearings sealed or shielded?
A: These are ZZ shielded, meaning they have metal shields on both sides.
Q: Do you sell single pieces?
A: Currently, these are sold in packs of 10 pieces only.
Q: What are the dimensions for SMR138ZZ?
A: The SMR138ZZ has a bore of 3mm, OD of 8mm, and width of 4mm.
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