Description
Reviews
| Brand | - |
| Category | Root / Metal Materials & Products |
| Origin | - |
| Material Grade | QSn4-3 Tin Bronze |
| Application | Injection Molding Machines |
| Key Feature | High Wear Resistance |
| Customization | Non-Standard Sizes Available |
| Manufacturing Process | Precision Cast and Machined |
| Surface Finish | Smooth Polished Bore |
| Hardness | HB 90-120 |
| Lead Time | 7-15 Days for Custom Orders |
| Quality Standard | ISO 9001 Certified |
| Origin | Industrial Manufacturing Hub |
Anonymous
Mar 23, 2026
Rating: 5/5
Great for non-standard specs
Finding sleeves for our proprietary machine design was difficult until we found this manufacturer. They accommodated our weird dimensions perfectly without compromising on material integrity.
Anonymous
Mar 20, 2026
Rating: 4/5
Good quality, slight delay
The bronze sleeves are high quality and show excellent wear resistance so far. Delivery took a few days longer than expected due to the custom machining, but the product is worth the wait.
Anonymous
Mar 12, 2026
Rating: 4/5
Solid industrial component
These are robust sleeves. The surface finish on the bore is very smooth, which helps with lubrication. Price is fair for custom metalwork.
Anonymous
Mar 08, 2026
Rating: 5/5
Excellent wear resistance
Replacing standard bushings with these tin bronze sleeves has significantly reduced maintenance downtime. They handle the high-pressure environment of our molding machines very well.
Anonymous
Mar 05, 2026
Rating: 5/5
Reliable supplier
Second time ordering from this supplier. Consistency in the QSn4-3 alloy composition is evident. Our production team is happy with the performance.
Anonymous
Mar 05, 2026
Rating: 5/5
Perfect fit for our molding line
We ordered custom-sized sleeves for our older injection molding machines. The QSn4-3 material is exactly what we needed for durability. Fit was precise and installation was smooth.
Q: What tolerance standards do you follow for the inner diameter?
A: We typically adhere to ISO H7/f7 tolerance classes for sliding fits, but we can adjust to tighter tolerances if your engineering specifications require it.
Q: What is the typical lead time for a batch of 50 custom sleeves?
A: For a batch of 50 units, the typical lead time is approximately 10 to 12 working days after the final design confirmation and deposit receipt.
Q: Do you provide material certification with the shipment?
A: Absolutely. Every shipment includes a Mill Test Certificate (MTC) detailing the chemical composition and mechanical properties of the QSn4-3 alloy used.
Q: Can you manufacture sleeves with inner diameters larger than 200mm?
A: Yes, we specialize in non-standard custom sizes. We can produce sleeves with inner diameters exceeding 200mm based on your specific technical drawings.
Q: Is the QSn4-3 material suitable for high-temperature applications?
A: QSn4-3 tin bronze offers good thermal conductivity and retains strength at elevated temperatures common in injection molding, making it a suitable choice for these environments.
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