Attributes

Brand	-
Category	Root / Metal Materials & Products
Origin	-
Material Grade	QSn4-3 Tin Bronze
Primary 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 Range	HB 90-120
Tolerance Standard	ISO H7/g6
Lead Time	7-15 Days for Custom Orders
Quality Certification	ISO 9001:2015 Compliant

6 reviews

Anonymous

Mar 28, 2026

Rating: 5/5

Excellent durability

These sleeves have been running in high-friction environments for three months now with zero signs of degradation. The material consistency is top-notch.

Anonymous

Mar 27, 2026

Rating: 5/5

Cost-effective solution

Compared to OEM parts, these are much more affordable without sacrificing quality. Our maintenance team is very satisfied with the performance.

Anonymous

Mar 27, 2026

Rating: 4/5

Good quality, slight delay in shipping

The QSn4-3 bronze quality is excellent and matches our specifications perfectly. The only reason for 4 stars is that the custom order took a few days longer than initially estimated.

Anonymous

Mar 14, 2026

Rating: 5/5

Perfect fit for our molding line

We ordered custom sleeves for our older injection molding machines. The dimensions were exact, and the wear resistance has significantly reduced our downtime. Highly recommended for industrial use.

Anonymous

Mar 11, 2026

Rating: 4/5

Solid industrial component

Very robust sleeves. We use them in heavy-duty applications. The surface finish is smooth which helps with lubrication. Would buy again.

Anonymous

Mar 11, 2026

Rating: 5/5

Great support for non-standard parts

Finding non-standard sleeves is usually a nightmare, but this manufacturer handled our unique drawings professionally. The final product fits like a glove.

5 FAQ

Q: Can you manufacture sleeves based on a specific CAD drawing we provide?

A: Yes, we specialize in non-standard custom sleeves. Please send your CAD files or detailed dimension sheets, and our engineering team will review them for feasibility and provide a quote.

Q: Do you provide material certification with the shipment?

A: Absolutely. Every batch comes with a Mill Test Certificate (MTC) detailing the chemical composition and mechanical test results to ensure compliance with standards.

Q: What is the maximum operating temperature for the QSn4-3 material?

A: QSn4-3 tin bronze generally maintains its mechanical properties up to approximately 250°C (482°F). For specific high-temperature applications, please consult our technical team.

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

A: For a quantity of 50 custom units, the typical production lead time is between 10 to 14 business days, depending on the complexity of the machining required.

Q: Are these sleeves suitable for continuous high-speed rotation?

A: Yes, QSn4-3 is designed for good sliding properties and wear resistance under load. However, proper lubrication is essential for continuous high-speed operations to maximize lifespan.

Explore your interests

Kingston Official Flagship Store – 64GB DTX High-Speed USB Flash Drive, Large Capacity, Customizable for Car Use, Genuine Portable U Disk

$49.90

Purple Copper Mesh, 10-400 Mesh Experimental Filter Net, Anti-Static Grounding and EMI Shielding for Server Rooms

$18.00

Jiesuyou Genuine High-Capacity USB Flash Drive - 64GB/128GB/32GB High-Speed USB 3.0 for Car Audio, Phones, and Computers

$11.90

usmile Electric Toothbrush Heads Compatible with Y30 Pro Official Replacement Heads Brightening Soft Bristles for Adults

$78.89

Oral-B iO Replacement Brush Heads - Gentle Cleaning and Whitening Type

$179.00

Condoms 100-Pack Ultra-Thin 001 Hyaluronic Acid Invisible Ribbed Large Dots Stimulating Long-Lasting for Men

$5.90

New GPS Locator with Recording Function – Vehicle Anti-Theft Tracking Device, Beidou Navigation System, Anti-Loss Gadget by Bangdaotu

$59.00

Kingston USB Flash Drive 128GB High-Capacity Genuine 256 High-Speed DTXM for Business and Office Use, Also Available in 64GB and 256GB

$44.50

BENJIE MP4 Music Player - Dedicated MP3/MP5 Bluetooth Walkman for High School Students, Pre-loaded with Novels and Songs

$79.90

Queen Card 30 Yuan, Queen Card 30, Official Queen Card Key, Automatic Delivery, No Fake Orders, Beware of Fraud

$30.00

YOOKO Electric Heated Eyelash Curler S10P, Rechargeable Long-Lasting Curling Tool

$58.60

ASUS High-Speed Memory Card for Dash Cams & Surveillance Cameras – TF/microSD Cards (64GB/128GB), Class 10, 100MB/s, Universal Compatibility

$49.82

Aigo Bluetooth MP3 Player - Student Edition MP4 with Camera, Novel Reading Feature for High Schoolers

$129.00

Seemagic Electric Nail Trimmer & Grinder - All-in-One Automatic Manicure Tool for Kids & Seniors

$86.00

Niliya Reshape V1 Face Slimming Bandage, Lifting and Tightening for Nasolabial Folds and Double Chin, Sleep Facial Contouring Mask

$19.65

High-Speed USB Drive 128GB Large Capacity, Dual-Use for Mobile Phones and Computers, 64GB USB Drive for Men, Women, and Students, 16GB Car USB Drive, Affordable

$15.10

SanDisk Official Genuine USB Flash Drive Type-C Dual Interface Large Capacity for Phone and Computer Android iOS Car Use

$109.90

High-Purity Oxygen-Free Copper Foil for Research - Custom Ultra-Thin Sheets with Mirror Polish Finish

$18.00

H62 Brass Plate & H59 Brass Sheet/Strip – Custom Laser Engraving, Pure Copper Blocks, Metal Parts Fabrication

$2.47

Jinghao Hyaluronic Acid Condoms - Ultra-Thin Official Authentic Men's Adult Intimate Product for Couples

$5.90

Jissbon Condoms - Ultra-Thin Hyaluronic Acid Lubricated Series

$59.40

usmile Kids Electric Toothbrush Ages 3-12 Smart Voice Reminder Gift Model Q20

$299.00

Junwang Taole One-Card Pass 100 Yuan - Official Card Code, Automatic Issuance, Beware of Scams, Do Not Leak Card Codes

$100.00

Kingston Official Authentic High-Speed TF Memory Card 128GB for Surveillance, Dash Cam, DJI, Tablet, Pocket 3

$99.90

JNN Pen-Shaped Voice Recorder, Portable Professional HD Noise Reduction Device for Lawyers & Students, Classroom Transcription Equipment A

$68.00

Philips Official Original Electric Toothbrush Heads Compatible with Diamond 3/7/9 Series Handles - Cleaning, Gum Care, and Whitening C2

$59.00

Honor of Kings Coupon Top-Up Service: 1000/2000/5000/10000 Coupons, Rechargeable with Noble Level Upgrade

$35.99

Queen Card 20 Yuan - Auto Delivery, Official Code. No Fake Orders. Beware of Gambling Scams.

$20.00

Queen Card 100 Yuan - Official Queen Card Code, Auto Delivery, No Fake Orders, Beware of Scams

$100.00

Wuthering Waves Recharge International/CN Server 6480 Diamonds Top-up Service, 648 Yuan Lunar Phase Whale Spending, Universe Channel Monthly Card

$23.99

High-Capacity USB Flash Drive with Type-C Dual Interface, 128GB/512GB, High-Speed for Phones and Computers

$26.50

Small Capacity Full-Size TF Cards: 128MB/256MB/512MB/1GB/2GB/8GB/16GB/32GB Mobile Phone Memory Storage Cards

$6.50

Jissbon Zero Sense Thin Condoms Ultra-Thin Barely-There Feel Men's Pleasure 6pcs x 2 Boxes (12pcs Total)

$45.80

Copper Plate T2 Purple Copper Plate Pure Copper Material Heat Dissipation Purple Copper Sheet Red Copper Plate Laser Cutting Pure Purple Copper Block Custom Processing

$1.20