Shanghai Yinin Bearing & Transmission Company is a professional Wholesale Ordinary Type Linear Ball Bearing manufacturer and supplier. With over 20 years of bearing industry experience and an integrated sales and manufacturing group, we supply ST and ST...B series ordinary linear ball bearings designed for high-precision, high-load, and low-friction motion systems.
Our Range: ST and ST...B Series
Our ordinary type linear ball bearings are available in two complementary series, each engineered for specific performance priorities. Both series are manufactured in chrome steel or stainless steel, with options for seals and lubrication to match your operating environment.
| Series |
Key Characteristics |
Typical Applications |
| ST Series |
High precision, high load capacity, robust construction |
Automation equipment, robotics, heavy-load linear guides |
| ST...B Series |
High precision, low friction, optimized for energy efficiency |
Machining centers, transport systems, high-speed actuation |
Application Fit and Engineering Value
Ordinary type linear ball bearings are the workhorse of linear motion systems where shafts need smooth, low-friction guidance. Our ST series is specified when load capacity and rigidity are critical, while the ST...B series is chosen for applications demanding minimal frictional resistance and improved energy efficiency.
We understand that each machine has unique operating conditions. Our engineering team evaluates your load profile, speed, travel length, and environmental factors to recommend the correct series, size, and internal clearance. We also offer customization of non-standard dimensions and materials for specialized projects.
Key Specifications We Address
- Bore and outer diameter: Standard metric sizes, with custom dimensions available.
- Dynamic and static load ratings: Matched to your application's expected loads and service life.
- Accuracy class: High-precision grades for consistent motion and minimal runout.
- Friction coefficient: Optimized through ball selection and raceway finishing.
- Material options: Chrome steel (GCr15) for general use, stainless steel (AISI 440C) for corrosion resistance.
Quality Assurance and Testing
As a China-based factory, we implement process-level inspections at each manufacturing stage. Finished bearings undergo full inspection according to customer requirements and international standards. Our QC team uses precision measuring instruments to verify dimensional accuracy, radial clearance, and surface finish.
We also conduct noise and vibration testing to ensure smooth operation. For high-volume orders, we provide sampling inspection reports and can arrange third-party verification upon request.
Integration and Support
Our bearings are designed for straightforward integration into your existing linear motion systems. We provide technical documentation including dimensional drawings, mounting recommendations, and lubrication guidelines. Our team assists with shaft tolerance selection and housing fit to maximize bearing life.
We support both OEM and aftermarket projects. For automation integrators, we can supply matched sets or pre-lubricated bearings to streamline assembly. Our export experience covers the United States, Europe, and Asia, ensuring reliable packaging and documentation for international shipments.
Information We Use to Configure Your Solution
To prepare an accurate quotation and technical proposal, we need the following project details:
- Required bore diameter, outer diameter, and length (if non-standard).
- Operating load (radial and axial) and expected life in hours or cycles.
- Travel speed and acceleration profile.
- Environmental conditions (temperature, humidity, dust, chemicals).
- Material preference (chrome steel or stainless steel) and any corrosion resistance requirements.
- Lubrication type (grease, oil, or dry film) and sealing requirements.
- Quantity per order and delivery schedule.
Frequently Asked Questions
What is the difference between ST and ST...B series?
ST series focuses on high load capacity and rigidity, suitable for heavy-duty applications. ST...B series is optimized for low friction, improving energy efficiency and reducing heat generation in high-speed or high-cycle operations.
Can you provide stainless steel ordinary type linear ball bearings?
Yes, we manufacture both chrome steel and stainless steel versions. Stainless steel is recommended for corrosive environments such as food processing, medical devices, or outdoor equipment.
What is your minimum order quantity?
Our standard MOQ is 100 sets for stocked sizes. For custom or non-standard bearings, we evaluate based on manufacturing feasibility and tooling requirements.
How do you ensure quality for wholesale orders?
We perform in-process inspections and final inspection on finished bearings. For large orders, we can provide batch testing reports and support third-party inspection before shipment.
Do you offer custom sizes or special materials?
Yes, we can customize dimensions, materials, and tolerances for specific applications. Share your drawings or specifications, and our technical team will advise on feasibility and lead time.
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