Designed for truck and automotive powertrain systems, our 22220EK and 22226 spherical roller bearings feature self-aligning geometry that compensates shaft deflection. Manufactured to ISO, DIN, GB and JIS standards from bearing steel, these units handle both radial and axial loads across a broad size range from 20mm to 1600mm bore. Backed by 5 million+ piece annual capacity, we support OEM sourcing with flexible lead times of 3-10 days.
22222 22220EK
Bearing Steel
DIN, GB, ISO, JIS
Barreled, bagged, boxed, palletized or as customers' requirement
The 22220EK is a double-row spherical roller bearing with a 100 mm tapered bore (1:12 taper), 180 mm outer diameter, and 46 mm width. The E designation indicates an enhanced internal design with optimized roller geometry and raceway profiles, while the K suffix denotes a tapered bore with a 1:12 conical taper, intended for mounting on adapter sleeves or withdrawal sleeves. Manufactured from through-hardened GCr15 bearing steel, this bearing supports heavy radial loads combined with axial loads in both directions, and provides self-aligning capability to accommodate shaft deflection and housing misalignment.
Spherical roller bearings of the 22220EK type feature two rows of barrel-shaped rollers operating between a common sphered outer ring raceway and two inner ring raceways inclined at an angle to the bearing axis. This geometry allows the inner ring to tilt relative to the outer ring by up to approximately 1.5° to 2.5° (depending on clearance and load), compensating for shaft deflection, mounting errors, and housing bore misalignment. The tapered bore design enables the bearing to be mounted onto shafts using adapter sleeves (such as the H3120 series) or withdrawal sleeves, which simplifies installation and removal in applications where the bearing must be positioned along the shaft length.
22220EK Bearing Specifications
Parameter
Value
Bearing type
Spherical roller bearing, double row
Designation
22220EK
Bore diameter
100 mm (tapered bore, 1:12 taper)
Outer diameter
180 mm
Width
46 mm
Bore type
Tapered bore (K), 1:12 conical taper
Internal design
E-type — enhanced roller and raceway geometry
Standard clearance
C0 (normal) — C3 and C4 available on request
Cage
Stamped steel (standard) — brass or polyamide available
Seals
Open type
Lubrication
Grease or oil; W33 outer ring groove available as option
Material
GCr15 (100Cr6) bearing steel
Standard
ISO 15, DIN 635-2
Approx. weight
4.8 kg
Basic dynamic load rating (C)
approx. 325 kN
Basic static load rating (C0)
approx. 380 kN
Design Features of 22220EK Spherical Roller Bearings
Enhanced E-Type Internal Design
The E designation refers to an optimized internal design featuring improved roller end contact with the guide flanges, optimized roller crowning, and enhanced raceway profiles. These modifications distribute stress more evenly across the roller-raceway contact area, contributing to higher load ratings and longer service life compared with standard designs.
Tapered Bore with 1:12 Taper
The K suffix indicates a tapered bore machined to a 1:12 conical taper. This design allows the bearing to be mounted using an adapter sleeve (pressed onto the shaft and into the bearing bore) or a withdrawal sleeve (used to remove the bearing from a stepped shaft). Tapered bore mounting provides secure seating and allows adjustment of internal clearance during installation.
Self-Aligning Capability
The sphered outer ring raceway enables the inner ring and roller assembly to pivot relative to the outer ring, accommodating shaft deflection and misalignment between the shaft and housing bore. This feature reduces edge stresses on the rollers and raceways that would otherwise accelerate fatigue in misaligned conditions.
Bidirectional Axial Load Support
With two rows of rollers arranged symmetrically, the 22220EK can carry axial loads in both directions simultaneously with radial loads. This makes it suitable for applications where thrust loads reverse direction or vary during operation.
22220EK Bearing Industrial Applications
The 22220EK spherical roller bearing is specified across heavy industrial sectors where high radial loads, moderate bidirectional axial loads, and misalignment tolerance are required. Primary applications include conveyor pulleys and idlers in mining and bulk material handling, vibrating screens and feeders in aggregate processing, dryer cylinders and press rolls in paper machinery, gearbox supports in wind turbine main drives, roll neck supports in steel mill continuous casters, and fan shaft bearings in cement plant equipment. The tapered bore design, when paired with adapter sleeves, is particularly common in applications where the bearing must be mounted on a smooth shaft without a shoulder, or where frequent removal for maintenance is planned.
FAQ
What does the EK suffix mean on the 22220 bearing?
The E indicates an enhanced internal design with optimized roller and raceway geometry for improved load capacity. The K indicates a tapered bore with a 1:12 conical taper, designed for mounting on adapter sleeves or withdrawal sleeves rather than a straight cylindrical shaft.
What is the bore size of the 22220EK spherical roller bearing?
The 22220EK has a 100 mm nominal bore diameter. Because it features a tapered bore (1:12 taper), the actual inside diameter varies slightly along the width of the inner ring; the 100 mm dimension refers to the nominal bore size at the small end of the taper.
How does the tapered bore of 22220EK affect mounting?
The tapered bore allows the bearing to be mounted using an adapter sleeve (such as H3120 for standard shafts) or a withdrawal sleeve. The sleeve is driven into the bearing bore during installation, expanding the inner ring and creating a secure interference fit on the shaft. This method also allows internal clearance to be adjusted by controlling how far the sleeve is driven into the bearing.
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