Attributes

Brand	-
Category	Root / 3C Digital Accessories
Origin	-
Material	Sintered Bronze (CuSn10)
Lubrication Type	Oil-Impregnated (Self-Lubricating)
Manufacturing Process	Powder Metallurgy
Available Inner Diameters	3mm, 4mm, 5mm, 6mm, 8mm, 9mm, 10mm, 12mm, 15mm
Operating Temperature	-10°C to +80°C
Max Load Capacity	Dynamic: 15 N/mm², Static: 30 N/mm²
Surface Finish	Smooth Sintered Surface
Application Range	Small Motors, Fans, Toys, Office Equipment
Package Contents	10 Pieces per Pack (Mixed Sizes or Single Size)
Compatibility	Standard Metric Shafts

6 reviews

Anonymous

Mar 30, 2026

Rating: 5/5

Perfect for my 3D printer upgrades

These bronze sleeves fit perfectly on my stepper motor shafts. The self-lubricating feature works great, and there is no squeaking after weeks of continuous use. Highly recommended for DIY electronics projects.

Anonymous

Mar 28, 2026

Rating: 4/5

Good quality, slight variance in ID

Overall very good bearings for the price. I noticed the 5mm inner diameter was a tiny bit tight on my shaft, requiring a little extra force to install, but once seated, they run smoothly.

Anonymous

Mar 11, 2026

Rating: 4/5

Solid standard component

Nothing fancy, just reliable powder metallurgy bearings. They do exactly what they are supposed to do. Shipping was fast and packaging prevented any damage.

Anonymous

Mar 07, 2026

Rating: 5/5

Excellent value for bulk purchase

Bought these for a batch of small cooling fans. The oil impregnation is evident as they feel slightly greasy out of the package, which is exactly what you want for long life without maintenance.

Anonymous

Mar 06, 2026

Rating: 5/5

Silent operation achieved

Replaced the plastic bushings in my drone gimbals with these bronze sleeves. The vibration decreased significantly, and the movement is much smoother. Great product for precision gear.

Anonymous

Mar 02, 2026

Rating: 3/5

Works but limited size selection in one pack

The quality is fine, but I wished the mixed pack had more variety in lengths. The diameters are accurate, but ensure you measure your housing depth before ordering.

5 FAQ

Q: Are these resistant to corrosion?

A: Bronze has natural corrosion resistance, but it is not stainless. In highly humid or wet environments, some surface oxidation may occur over time, though it rarely affects performance in typical 3C accessory applications.

Q: What is the tolerance for the inner diameter?

A: The inner diameter typically follows an H7 tolerance class, ensuring a snug fit for standard metric shafts while allowing for smooth rotation.

Q: Is the 15mm size available in a length of 20mm?

A: Our current stock for the 15mm ID primarily includes lengths of 10mm, 15mm, and 25mm. A 20mm length is not currently listed, but please contact us directly for custom bulk orders.

Q: Can these be used in high-speed applications over 5000 RPM?

A: While durable, these sintered bronze bearings are best suited for low to medium speed applications. For speeds exceeding 5000 RPM, we recommend checking specific load and heat dissipation requirements or considering ball bearings.

Q: Do these bearings require additional oiling during installation?

A: No, these are oil-impregnated during the manufacturing process. They are self-lubricating and ready to use right out of the package. Adding external oil is generally not necessary unless operating under extreme conditions.

Explore your interests

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

$78.89

ASUS USB Flash Drive with Type-C Dual Interface – Compatible with Apple Devices, Phone & PC Use, High-Capacity Storage Expansion, 160MB/s Speed

$49.88

USB Drive 64GB: Customizable 32/16/8GB Metal 'Little Fatty' High-Speed Flash Drive for Cars, Bidding, and Mini Low-Capacity Needs

$5.80

Action Camera Tripod Adapter for GoPro 11/10/9/7/5, DJI Conversion Base, Connection 1/4" Accessories

$2.80

TCL Front-Load Washing Machine G100T7-HDI Driver Board Variable Frequency Motor Control Original Two-Year Warranty

$101.00

[Government Subsidy] AUX Desktop Small Fan Clip Fan Mini USB Rechargeable Fan Handheld Silent for Students Class Office Car Mini Dorm Home Tabletop No Installation New Model

$31.65

EMP Portable Recording Pen - Professional HD Noise Cancelling Device for Lawyers and Elementary Students, Text Transcription Tool

$134.00

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

$19.60

Compact Portable Professional HD Noise-Canceling Voice Recorder, Large Capacity, Long Standby for Students, Class Recording, Text Conversion

$41.10

Honor of Kings Point Voucher Recharge, Proxy Recharge Red Packet 10000/1000/2160 Points, Increases Noble Level

$43.11

Helmet Mount Action Camera Flexible Adhesive Base for Insta360 X5, Ace Pro 2, DJI Action 6, 360 Nano - Fixed with 3M Tape for Paddleboards, Fuel Tanks, Windshields, Skateboards

$35.90

Pisen Tempered Glass Screen Protector for iPhone 17/16 Pro, iPhone 15 Pro Max, 13, 14 Pro, Air, 11, 12; Full Coverage, Anti-Fingerprint, Drop Protection, Privacy Filter

$12.80

Compatible with Chigo Washing Machine Special Parts: Pulsator Turntable Water Blade Disc Fixing Screws, 6MM 8mm Stainless Steel Screws

$10.00

STC8H8K64U Development Board STC 32-bit Minimal System Microcontroller Learning Experimental Core Board LQFP64

$47.00

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

$79.90

Airmate Clip-On Mini Fan, Small USB Rechargeable Clip Fan for Student Dorms and Beds, Mini Portable Handheld Ultra-Quiet Fan for Strollers, Office Desks, and Cars

$26.90

120W HK Version UK Standard Mobile Phone Charger Head Fast Charging PD 25W UK Plug 3 Type-C Charger Hong Kong Macau 2 USB

$26.20

Aigo AI Meeting Minutes Noise Cancelling Portable Professional Voice Recorder for Lawyers Students Class Recording

$139.00

Jissbon Condoms - Ultra-Thin Hyaluronic Acid Lubricated Series

$59.40

Deli Voice Recorder Compact Portable Professional HD Noise Reduction Long Standby for Students Classroom Use, Text Conversion Recording Device

$129.00

Xingyan Compatible with iPhone 13 Charging Cable iPhone 11 Fast Charge Lightning Data Cable PD Original iPad Pack 15 Authentic 16 Apple PD Phone 14/12 Charger Cable USB Interface Type-C

$6.99

[Recommended by Bi Wenjun] Philips Sonicare DiamondClean 3 Series HX5171 Electric Toothbrush Gift for Couples

$269.00

Baseus Charging Cable for Apple iPhone 14/13/12/11/16/15 and iPad - Type-C to Lightning, PD 30W Fast Charge, 2M Length, Car Compatible

$26.90

Gomeis 105PC Electric Grinder Set with Silicon Carbide Cutting Wheels and Jade Polishing Discs for Woodworking

$45.00

Brass Sleeve Bushing Oil-Impregnated Bearing Graphite Brass Sleeve Self-Lubricating Bearing Self-Lubricating Brass Sleeve

$61.00

Longxing Gift Card 50 Yuan Longxing Card Code Official Card Code Automatic Delivery No Fake Orders in This Store Longxing Card

$50.00

Fungal Nail Grinder Electric Nail Grinder Special Kit Pedicure Knife Tool Toe Nail File Fungal Nail Trimming Artifact

$21.00

Shining Nikki CN Server Top-up, Double Monthly Card 68, Top-up 30 128 198 180 648 Gift Pack Privilege Card Recharge

$5.50

iFLYTEK AI Voice Recorder Accessories – Official Custom Lanyard and Wrist Strap

$39.00

Yue'er Wanwan Visible Ultrasonic Dental Scaler Teeth Cleaning Tartar Removal Device Tooth Stain Cleaner Teeth Whitening

$179.00

Graphics Card Network Card Gold Finger Dust Cover PCIEx16 Protective Sleeve PCIE 1X 4X 8X Board Card Protection Dust Cap

$0.52

[520 Gift] Xiaomi Official Mijia Sonic Electric Toothbrush T200C for Adults and Couples, Portable Travel Size

$85.00

[7-Day Trial] Type-C Data Cable 6A Fast Charging TLXT Compatible with P70/P60/P50/P40 Pro Charging Cable Super Flash Charge 66/88/100 Charger Head Compatible with Samsung and Apple

$15.90