Motion & Linkage
Stainless Steel Spherical Bearings
Profab stainless steel spherical bearings are designed for use in harsh industrial conditions, offering durable solutions for angular misalignment and smooth motion control. With over 20 years of experience in stainless steel component manufacturing, we combine advanced CNC machining capabilities, strict quality management, and streamlined production processes to meet the diverse needs of global customers.
- ISO 9001 Certified
- Custom OEM Solutions
- Fast Global Shipping
- Technical Support
Product Range
Types of Stainless Steel Spherical Plain Bearings
Whether you are an equipment manufacturer, system integrator, or industrial procurement expert, we can provide customized solutions based on your drawings, specifications, tolerances, and material preferences. From prototype design to mass production, we ensure consistent quality, reliable performance, and responsive support every step of the way.
Material Specification
Choosing the Right Grade
304 Stainless
General-purpose grade. Good resistance to humidity, mild chemicals, and food-safe cleaning agents. Use this for indoor machinery, agricultural equipment, and dry-run automation.
Food · Automation · Indoor
316 / 316L
Molybdenum addition gives 316L roughly 3× better chloride resistance than 304. Required for marine applications, salt-spray environments, offshore, and food-grade lines with CIP chemical cleaning.
Marine · Chemical · Pumps
17-4PH
Precipitation-hardened grade. After H900 heat treatment, tensile strength reaches ~1310 MPa — significantly stronger than 316. Used in motorsport, aerospace, and high-cycle fatigue applications where load ratings matter more than cost.
Aerospace · Motorsport · Hi-load
Exploring Core Features of PROFAB Stainless Spherical Bearings
360° Multi-directional self-adjustment
Automatically compensates for axial and angular misalignment, ensuring smooth operation without sticking and stress concentration.
High load carrying capacity
Designed to withstand heavy radial and axial forces, suitable for highly dynamic scenarios such as robotics, aerospace and industrial machinery.
Excellent Corrosion and Wear Resistance
Precision machined from 304/316 stainless steel, it resists salt spray, chemical corrosion, and abrasion for longer service life.
Flexible lubrication
Optional self-lubricating PTFE lining or lubrication programme with greasing device to meet different maintenance cycle requirements.
Superior PROFAB Machining - For High Quality SS Spherical Bearings
Machining centres utilise the latest CNC technology to turn and mill stainless steel spherical bearing housings and inner rings with exceptional precision. The second stage is strengthening the material by quenching or ageing heat treatment. The third stage is passivation, which is achieved through pickling to create a dense protective layer.
For the assembly step, self-lubricating PTFE linings or grease lubrication systems with dust-proof seals are fitted to different models. Dimensional and concentricity checks are done in batches on a CMM, and corrosion resistance is tested with an ASTM B117 salt spray test.
Profab spherical plain bearings are kept with quality and reliability in mind, thus calibrated to specific torque values.
Why Profab
Your Reliable OEM Partner
01
Direct-from-Manufacturer Advantage
We are the original manufacturer—no middlemen. Our pricing is transparent and competitive, helping you lower procurement costs while maintaining product quality.
02
Precision Tolerance and Wear Resistance
Each bearing is manufactured with tight tolerances and treated for superior wear resistance—ideal for dynamic or oscillating movements under load.
03
Corrosion Resistance in Harsh Environments
Our stainless steel spherical bearings are ideal for marine, food processing, and chemical machinery applications requiring long-term corrosion resistance.
Technical Reference
Specifications & Videos
| B DIA. (mm) | D DIA. (mm) | B DIA. (Inch) | D DIA. (Inch) |
|---|---|---|---|
| 3 | 12 | 0.1650 | 0.4687 |
| 4 | 12 | 0.1900 | 0.5625 |
| 5 | 14/16 | 0.2500 | 0.6562 |
| 6 | 14/18 | 0.3125 | 0.7500 |
| 8 | 16/22 | 0.3750 | 0.8125 |
| 10 | 19/26 | 0.4375 | 0.9062 |
| 12 | 22/30 | 0.5000 | 1.0000 |
| 14 | 34 | 0.5625 | 1.0937 |
| 15 | 26 | 0.6250 | 1.1875 |
| 16 | 38 | 0.7500 | 1.4375 |
| 17 | 30 | 0.8750 | 1.5625 |
| 18 | 42 | 1.0000 | 1.7500 |
| 20 | 35/46 | 1.0000 | 2.0000 |
| 22 | 50 | 1.1875 | 2.3750 |
| 25 | 42/56 | 1.2500 | 2.3750 |
| 30 | 47/66 | 1.5000 | 2.7500 |
| Custom | Custom | 1.7500 | 3.1250 |
| 2.0000 | 3.5000 | ||
| Custom | Custom |
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Often Ordered Together
FAQ
Common Questions
Not seeing your question? Email us at [email protected] and we typically reply same day.
How do stainless steel spherical bearings handle misalignment?
Their design allows for both angular rotation and slight shaft misalignments, reducing stress on machinery and extending service life.
Are these bearings suitable for food or medical applications?
Yes. With 304 or 316 stainless steel, they meet hygienic and corrosion-resistant requirements often needed in food processing and medical equipment.
How to Order
From Inquiry to Delivery
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Send Specs
Series, thread size, grade, hand, safety catch, quantity. DXF or drawing for custom items.
Respond Within 24 Hours
We will work on the best solution base on your request and send you a specific quote within 24 hours.
Production
7–15 days standard. Samples before full production run on new custom parts. QC report before shipment.
Delivery
Sea, air, or express courier. Material certs and inspection report inside every box. Tracking same day.
BLOG
Spherical Bearings Knowledge Base
What is A Spherical Plain Bearings？
This article will explain the bearing from construction, types, applications, and how to choose the most suitable type.
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If you already have the drawings, please send email to [email protected] directly for an instant quote.
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