Attributes

Brand	-
Category	Root / Metal Materials & Products
Origin	-
Material Grade	QSn4-3 Tin Bronze
Primary Application	Injection Molding Machines
Key Property	High Wear Resistance
Customization	Non-Standard Sizes Available
Manufacturing Process	Precision Casting and Machining
Surface Finish	Smooth Polished Bore
Hardness Range	HB 90 - 120
Operating Temperature	Up to 250°C
Lead Time	7-15 Days for Custom Orders
Quality Certification	ISO 9001:2015 Compliant

6 reviews

Anonymous

Mar 24, 2026

Rating: 5/5

Excellent wear resistance

These copper shaft sleeves have outlasted our previous supplier's parts by at least 30%. The tin bronze composition handles the high friction environments perfectly.

Anonymous

Mar 22, 2026

Rating: 5/5

Great for heavy-duty use

Installed these on our high-tonnage presses. They handle the load without deformation. The surface finish helps with lubrication retention too.

Anonymous

Mar 16, 2026

Rating: 4/5

Solid industrial component

Very satisfied with the durability. The QSn4-3 alloy is exactly what we needed for our specific application. Packaging was secure and prevented any damage during shipping.

Anonymous

Mar 13, 2026

Rating: 5/5

Perfect fit for our molding line

We ordered custom non-standard bushings for our older injection molding machines. The QSn4-3 material quality is excellent, and the dimensions were spot on. Reduced our downtime significantly.

Anonymous

Mar 02, 2026

Rating: 5/5

Reliable manufacturer

We have been sourcing our bronze bushings from this manufacturer for two years now. Consistency in material grade and finish is what keeps us coming back.

Anonymous

Mar 01, 2026

Rating: 4/5

Good quality, slight delay

The bushings themselves are top-notch and machined very precisely. Only giving 4 stars because the custom order took a few days longer than initially estimated, but the quality makes up for it.

5 FAQ

Q: What is the typical lead time for a batch of 500 custom units?

A: For a batch of 500 custom QSn4-3 bushings, the typical lead time is approximately 10 to 12 working days after the final design approval and deposit receipt.

Q: Is this material suitable for continuous operation at 200 degrees Celsius?

A: Yes, QSn4-3 tin bronze maintains its mechanical integrity and wear-resistant properties at continuous operating temperatures up to 250°C, making it suitable for your 200°C requirement.

Q: What lubrication do you recommend for these bushings in injection molding applications?

A: For injection molding machines, we generally recommend standard industrial grease or oil compatible with copper alloys. The smooth bore finish of our bushings aids in maintaining an effective lubricant film.

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 material used in your order.

Q: Can you manufacture bushings with non-standard inner diameters?

A: Yes, we specialize in custom non-standard bushings. Please provide your technical drawings or specific dimensional requirements, and we can produce them to your exact specifications.

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