Custom Minature Ball Bearing Manufacturer
Shanghai Yinin Bearing & Transmission Company is a China-based Custom Minature Ball Bearing manufacturer with over 20 years of experience in the bearing industry. We supply precision miniature ball bearings in metric and flange series, available in chrome steel and stainless steel, for applications where space is limited but reliability is critical.
Our range covers 60, 62, 63, 68, 69, and MR series metric bearings, plus flange versions in metric, inch, and extended series. We support OEM and replacement projects with engineering guidance, quality control, and flexible batch sizes.
Our Product Range
| Series |
Type |
Typical Bore Range |
Application Fit |
| 60 Series |
Metric, open or shielded |
1–10 mm |
Compact motors, instruments |
| 62 Series |
Metric, deep groove |
1–10 mm |
High-speed, low-noise equipment |
| 63 Series |
Metric, heavy section |
3–10 mm |
Precision machinery, micromotors |
| 68/69 Series |
Metric, extra thin |
2–8 mm |
Space-limited, high precision |
| MR Series |
Metric, inch-compatible |
1–6 mm |
Small machinery, tools |
| Flange Metric |
With radial flange |
1–10 mm |
Easy axial location in housings |
| Flange Inch |
Inch dimensions, flanged |
1/8–1/2 in |
Legacy or imperial designs |
| Flange Extended |
Wider inner ring or outer ring |
Varies |
When additional shaft support is needed |
Application Fit and Material Selection
Miniature ball bearings are used in medical devices, automation equipment, home appliances, and instrumentation. They support rotating shafts where low friction, quiet operation, and long life are required in a small envelope.
We offer bearings in chrome steel (AISI 52100) for general use and stainless steel (AISI 440C) for corrosion resistance in food, medical, or marine environments. For high-temperature or vacuum applications, we can recommend appropriate materials and lubricants.
Critical Specifications and Performance
- Precision grades: We supply ABEC-1, ABEC-3, and ABEC-5 as standard, with higher grades on request.
- Radial clearance: C2, CN, C3, or C4 to match interference fits and thermal expansion.
- Noise and vibration: Low-noise variants are available for applications like small motors and fans.
- Speed rating: Our bearings are designed for high-speed operation, with appropriate cage and lubrication.
- Load capacity: Dynamic and static load ratings are provided for each series in our datasheets.
Configuration Options and Customization
We understand that standard catalogs do not always fit your design. As a custom miniature ball bearing supplier, we can modify:
- Bore, outer diameter, and width dimensions
- Shields, seals (contact or non-contact), and snap rings
- Cage material: steel, brass, or polymer
- Lubrication: grease type, oil, or dry film
- Flange shape and mounting holes
- Surface treatment for special environments
We also produce non-standard high-end bearings for specific OEM requirements. Our engineering team works from your drawings or samples to deliver a bearing that fits your exact envelope.
Quality Assurance and Testing
Quality is built into every step. We perform inspections after each manufacturing process, and finished bearings undergo full inspection according to your requirements and international standards. Our QC center is equipped with precision measuring instruments to verify dimensions, noise, and vibration.
We can provide material certificates, dimensional reports, and test data with your shipment. For critical applications, we can agree on sampling plans and acceptance criteria before production.
Integration and Support
We supply bearings for new designs and as replacements in existing equipment. Our team can help with mounting recommendations, shaft and housing tolerances, and lubrication selection to maximize bearing life.
For automation or high-volume lines, we can package bearings in tubes or trays for easy feeding. We also offer training for your assembly staff on correct handling and installation.
Information We Use to Configure Your Solution
To prepare an accurate quotation and technical proposal, please provide:
- Bearing series or part number (if known)
- Required dimensions: bore, OD, width, or flange details
- Application type and operating conditions (load, speed, temperature)
- Material preference (chrome steel or stainless)
- Precision grade and radial clearance
- Shield/seal and lubrication requirements
- Annual quantity and target delivery schedule
With this information, we can recommend the most suitable bearing configuration and provide a competitive quotation.
FAQs
What is the minimum order quantity for custom miniature ball bearings?
Our MOQ is typically 100 sets for standard sizes, but for custom designs, we evaluate based on complexity and production feasibility. Contact us with your requirements for a specific MOQ.
Can you supply bearings in stainless steel?
Yes, we offer miniature ball bearings in stainless steel (AISI 440C) for corrosion resistance. We also provide chrome steel bearings for general applications.
Do you provide technical support for bearing selection?
Yes, our technical team can help you choose the right bearing based on load, speed, temperature, and environmental conditions. We can also recommend lubrication and sealing options.
What quality documentation do you provide?
We provide material certificates, inspection reports, and dimensional data as required. Full inspection is performed on finished products according to your specifications and international standards.
How do you handle packaging and delivery?
Bearings are individually packaged to prevent damage and contamination. We offer standard export packaging and can customize for automated assembly lines. Delivery terms are agreed per order.
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