A
Anonymous
Apr 19, 2026
Rating: 4/5
Solid Build
Material quality is consistent with the description provided online.
Description
Copper Bushing Manufacturer qsn4-3 Tin Bronze Sleeve, Wear-Resistant Copper Bushing for Injection Molding Machines, Non-Standard Custom Bushings
Reviews
Attributes
| Brand | - |
| Category | Industrial Small Parts / Bearings & Bushings |
| Origin | - |
| Material Composition | QSn4-3 Tin Bronze |
| Product Type | Wear-Resistant Sleeve |
| Compatible Machinery | Injection Molding Machines |
| Inner Diameter Specification | 50 mm |
| Outer Diameter Specification | 60 mm |
| Sleeve Length | 100 mm |
| Hardness Level | HB 70-90 |
| Surface Finish Quality | Ra 1.6 |
| Dimensional Tolerance | H7/f7 Standard |
| Country of Origin | Mainland China |
5 reviews
A
Anonymous
Apr 11, 2026
Rating: 5/5
Great Value
Perfect for our non-standard machine requirements and priced reasonably.
A
Anonymous
Mar 06, 2026
Rating: 5/5
Excellent Durability
These sleeves hold up well under high pressure conditions in our factory.
A
Anonymous
Jan 31, 2026
Rating: 4/5
Good Fit
Dimensions were accurate but delivery was slightly slower than expected.
A
Anonymous
Jan 30, 2026
Rating: 5/5
Reliable Part
No wear observed after three months of continuous operation.
5 FAQ
Q: What is the warranty period?
A: We offer a 6-month quality warranty against manufacturing defects.
Q: Is material certification included?
A: Yes certs are provided with bulk orders upon request.
Q: Is lubrication required for installation?
A: Self-lubricating properties exist but oil is recommended for best performance.
Q: Do you ship internationally?
A: Yes we ship to most countries worldwide via standard freight methods.
Q: Can you manufacture custom lengths?
A: Yes we can produce non-standard lengths based on your drawings.
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