Self-Aligning Ball Bearings: Features, Models, Classification & Applications

Self-aligning ball bearings are versatile double-row precision bearings designed to solve shaft misalignment and coaxiality errors. Featuring a spherical outer ring raceway, these bearings deliver excellent self-aligning performance, strong radial load capacity and flexible installation. With complete standard and adapter sleeve models, they are widely used in low-precision tolerance and harsh industrial working conditions, ensuring stable and low-friction operation.

1. Core Bearing Features

•Excellent Self-Aligning Performance: The spherical outer ring raceway automatically compensates angular deviation caused by shaft deflection and installation coaxiality errors, generating no extra bearing load during operation.

•Stable Load-Bearing Capacity: Primarily designed for heavy radial loads, these bearings also withstand a small amount of bidirectional axial loads, while not supporting moment loads. The small contact angle remains stable under axial force.

•Strong Environmental Adaptability: Outstanding radial load and impact resistance, suitable for heavy-load and harsh working scenarios with low machining and operation accuracy requirements.

•Flexible & Tool-Free Installation: Models equipped with adapter sleeves and lock nuts can be installed at any position on smooth shafts without positioning shoulders, greatly simplifying assembly and maintenance.

2. Product Classification

•By Row Count: Single-row self-aligning ball bearings, double-row self-aligning ball bearings (mainstream industrial type)

•By Mounting Form: Standard locating type, adapter sleeve mounting type for flexible shaft installation

3. Full-Series Mainstream Models

1200 Series Standard Models: 1200, 1201, 1202, 1203, 1204, 1205, 1206, 1207, 1208, 1209, 1210, 1212, 1215, 1220

1300 Series Heavy-Duty Models: 1300, 1302, 1304, 1305, 1306, 1307, 1308, 1309, 1310, 1312, 1315, 1318

2200 Series Light Type Models: 2200, 2202, 2204, 2205, 2206, 2208, 2210, 2212, 2215, 2218

2300 Series Ultra-Heavy Models: 2304, 2305, 2306, 2308, 2310, 2312, 2314, 2316, 2318, 2320

Adapter Sleeve Mounted Models: 1206K+H206, 1208K+H208, 1310K+H310, 2212K+H212, 2310K+H230 self-aligning bearing units

Functional Suffix Types: Open type, ZZ dust-proof sealed type, 2RS waterproof sealed type, C3 large clearance type for vibrating equipment

4. Application Scope

Self-aligning ball bearings are widely applied in industrial equipment with low machining and operation accuracy requirements and harsh working conditions, including fans, conveyors, agricultural machinery, textile machinery, mining auxiliary equipment and general industrial transmission machinery.

5. Product Advantages

Our self-aligning ball bearings feature reliable misalignment compensation, strong radial impact resistance and flexible installation. Multiple series and sealing types adapt to various harsh working environments. All standard models are highly interchangeable, providing cost-effective, stable and low-maintenance bearing solutions for general industrial mechanical systems.