222 Series Spherical Roller Bearings

1. 222 Series Spherical Roller Bearings overview

222 Series Spherical Roller Bearings are double-row self-aligning roller bearings, widely adopted in heavy-duty industrial machinery. Consisting of one outer ring with a single spherical concave raceway, one inner ring with two inclined raceways, symmetric barrel-shaped rollers and precision cages, this classic series balances compact width and outstanding load capacity, becoming the most universal self-aligning bearing solution for medium & heavy load working conditions.

The series covers complete metric sizes ranging from tiny 22205 to large-size 22260, with two core bore options: straight cylindrical bore and tapered bore (1:12 taper, suffix K/EK) for quick installation with adapter sleeves. Multiple structural variants (CC, CA, MB, E) and clearance grades (C0, C2, C3, C4) meet diverse speed, vibration and load requirements. Most models support W33 lubrication groove & hole design for easy on-machine re-lubrication.

2. Core Structural & Material Advantages

• 2.1 Powerful Self-Aligning Performance

  The spherical outer raceway allows the bearing to automatically compensate 0.5°–2° angular misalignment caused by shaft bending, assembly errors or housing deformation. No extra friction or temperature rise occurs under deflection, effectively avoiding premature bearing failure from coaxial deviation.

• 2.2 Ultra-High Radial Load Capacity

  Dual barrel rollers realize linear contact with raceways, delivering superior radial load-bearing capacity. It can simultaneously bear bidirectional moderate axial loads, perfectly handle heavy static loads, dynamic shock loads and continuous vibration, yet cannot work under pure axial force alone.

• 2.3 Optimized Internal Structure Options

• CC Type: Stamped steel cage, optimized roller profile, low friction, high limiting speed, cost-effective for general industrial use

• CA/MB Type: Solid brass machined cage, stronger rigidity, better resistance to high temperature & heavy shock loads

• E/EK Type: Enhanced roller geometry, higher dynamic load rating, ideal for high-speed heavy-load equipment

• W33: Outer ring with circumferential lubrication groove and oil holes, convenient for periodic grease/oil replenishment without disassembly

• C3/C4 Clearance: Larger internal clearance for high temperature, vibration and heavy impact scenarios

• 2.4 Premium Raw Material & Long Service Life

  All rings and rollers are manufactured with high-purity GCr15 bearing steel, through integral quenching and precision grinding. The finished parts feature high surface hardness, excellent fatigue resistance and wear resistance, greatly extending service life under dusty, humid and high-temperature harsh environments.

• 2.5 Low Maintenance & Easy Installation

• Straight bore models mount directly on solid shafts; tapered bore (K/EK) matches standard adapter sleeves for fast disassembly and positioning. W33 lubrication structure simplifies daily maintenance, reducing equipment downtime and replacement costs.

3. Main Technical Specifications

• Bore range: 25mm ~ 300mm (standard metric series)

• Two bore forms: Cylindrical bore (no suffix) / Tapered bore (suffix K/EK)

• Cage materials: Stamped steel cage (CC), solid brass cage (CA/MB)

• Clearance grades: Normal C0, small C2, large C3, extra large C4

• Lubrication design: W33 groove & oil hole optional

• Lubrication mode: Grease lubrication (standard); oil lubrication for higher speed

4. Wide Industrial Applications

222 Series spherical roller bearings are the standard component for equipment with heavy loads, vibration and misalignment risks, covering nearly all heavy industries:

• Mining & Aggregate: Vibrating screens, jaw crushers, belt conveyors, rotary kilns

• Metallurgy: Rolling mills, steel furnaces, continuous casting equipment

• Paper & Printing: Paper machine rollers, drying cylinders, printing presses

• Power & Wind: Large industrial motors, fan blowers, wind turbine auxiliary gearboxes

• Construction Machinery: Mixers, cement rotary kilns, stone crushers

• General Heavy Machinery: Gearboxes, centrifuges, elevators, large pumps

5. Our Product Superiority

Full complete size inventory of 222 series from 22205 to 22260, all suffix types in stock

Strict dimensional tolerance control, consistent precision matching international standards

Customizable clearance, cage and W33 design per customer working conditions

Stable batch quality, low noise, low heat generation during long continuous operation

Competitive factory direct price, flexible MOQ, fast global delivery for B2B industrial buyers

6. Summary

As a versatile medium-width spherical roller bearing line, 222 Series combines strong self-aligning ability, heavy load endurance and flexible configuration. It solves core pain points of shaft misalignment, vibration and heavy impact for heavy machinery, and remains the most cost-effective self-aligning bearing choice for global manufacturing, mining and metallurgy industries.