A
Anonymous
Mar 27, 2026
Rating: 4/5
Good value
Solid steel but packaging was slightly damaged during shipping. Product itself is fine.
Description
Through-hardened heat treatment, precision machined on fully automatic CNC machines
Reviews
Attributes
| Brand | - |
| Category | Industrial Small Parts / Bearings & Bushings |
| Origin | - |
| Material | High-Carbon Bearing Steel (GCr15) |
| Hardness | 58-62 HRC |
| Available Sizes | 4mm, 5mm, 6mm, 8mm, 10mm |
| Surface Finish | Precision Polished |
| Tolerance Class | IT6 Standard |
| Application | Linear Motion Guides, Machinery Spacers |
| Corrosion Resistance | Standard Oil Coating |
| Package Quantity | 10 Pieces per Box |
| Weight per Unit | Approx. 5g - 50g (Varies by Size) |
| Country of Origin | Imported |
5 reviews
A
Anonymous
Mar 20, 2026
Rating: 5/5
Fast delivery
Exactly what I needed for repair. Arrived sooner than expected.
A
Anonymous
Feb 26, 2026
Rating: 5/5
High quality
Hardness is as described. I tested it with a file and it holds up well against wear.
A
Anonymous
Feb 07, 2026
Rating: 4/5
Nice fit
Slightly tighter than expected but ok. Good quality steel for the price.
A
Anonymous
Jan 30, 2026
Rating: 5/5
Perfect for my project
Works great with linear rails. The hardness is exactly as described and they fit snugly.
5 FAQ
Q: What is the return policy?
A: We accept returns within 30 days if the item is unused and in original packaging.
Q: Can I get 12mm sizes?
A: Currently we only stock up to 10mm in this listing.
Q: Are these sleeves hardened?
A: Yes, they are hardened to 58-62 HRC for durability.
Q: Do they come lubricated?
A: No, they come with a protective oil coating. Please apply appropriate lubricant before use.
Q: Is this stainless steel?
A: No, this is bearing steel. It has a protective coating but is not stainless.
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