Attributes

Brand	-
Category	Root / Metal Materials & Products
Origin	-
Material Grade	QSn4-3 Tin Bronze
Manufacturing Process	Centrifugal Casting & Machining
Hardness Range	HB 70-90
Tensile Strength	≥ 295 MPa
Application	Injection Molding Machines
Customization	Non-Standard Sizes Available
Surface Finish	Precision Machined
Wear Resistance	High Durability under Load
Lead Time	7-15 Days for Custom Orders
Quality Standard	ISO 9001 Certified Production

6 reviews

Anonymous

Mar 25, 2026

Rating: 5/5

Perfect fit for our molding machine

We ordered a set of non-standard bushings for our older injection molding equipment. The dimensions were exact, and the material quality feels very robust. Installation was smooth.

Anonymous

Mar 25, 2026

Rating: 4/5

Good wear resistance

These QSn4-3 bushings have been running in our high-cycle machine for three months now with no signs of excessive wear. Slightly longer lead time than expected, but worth the wait.

Anonymous

Mar 24, 2026

Rating: 5/5

Great value for non-standard parts

Finding custom copper sleeves at this price point without sacrificing quality is rare. They have held up well under continuous operation in our factory environment.

Anonymous

Mar 19, 2026

Rating: 5/5

Excellent custom manufacturing

Our engineering team needed a specific sleeve size that isn't off-the-shelf. The manufacturer handled the custom specs perfectly. The bronze quality is consistent throughout.

Anonymous

Mar 18, 2026

Rating: 4/5

Solid product, good packaging

The bushings arrived well-packaged to prevent any damage during shipping. Material certification was included. One minor burr on the edge was easily filed down, otherwise perfect.

Anonymous

Mar 13, 2026

Rating: 5/5

Reliable industrial component

Replaced our worn-out sleeves with these tin bronze bushings. The noise level in the machine has decreased, and operation is smoother. Highly recommend for heavy-duty use.

5 FAQ

Q: Is the QSn4-3 material suitable for high-temperature environments?

A: QSn4-3 tin bronze offers good thermal conductivity and maintains structural integrity at moderate elevated temperatures typical in molding applications, though we recommend checking specific operating limits for your setup.

Q: Can you produce bushings with inner diameters larger than 200mm?

A: Yes, we specialize in non-standard copper sleeves and can manufacture sizes well beyond 200mm based on your technical drawings.

Q: What is the typical lead time for a batch of 50 custom bushings?

A: For a quantity of 50 custom units, the standard production lead time is approximately 10 to 12 working days after drawing approval.

Q: What tolerance levels can you achieve on the inner diameter?

A: We can typically achieve IT7 to IT8 tolerance grades on inner diameters depending on the specific size and requirements outlined in your order.

Q: Do you provide material test reports with the shipment?

A: Absolutely. Every batch comes with a full material test report detailing chemical composition and mechanical properties to ensure compliance with standards.

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