TIMKEN offers a tailored range of spherical roller bearings to match the unique needs of different heavy industries. Below are three of the most trusted models, chosen for their track record in critical applications:
1. TIMKEN 22220EK Spherical Roller Bearing: The Workhorse for General Heavy Duty
The 22220EK is TIMKEN’s flagship spherical roller bearing for general heavy-duty use—and for good reason. With an inner diameter (ID) of 100 mm, outer diameter (OD) of 180 mm, and width of 46 mm, it balances compact size with exceptional load capacity:
- Dynamic Load Rating: 340 kN (radial), 145 kN (axial)
- Static Load Rating: 500 kN (radial), 220 kN (axial)
- Key Application: Ideal for conveyor rollers, vibrating screens (common in mining and aggregate processing), and industrial pump shafts. Its “EK” suffix indicates a cylindrical bore with a locking collar, making installation and repositioning easy—critical for maintenance teams working on large equipment.
Customers in the mining sector often report that the 22220EK outlasts competing bearings by 30–40% in conveyor systems, thanks to its ability to handle the constant impact of bulk materials (e.g., coal, gravel) without premature failure.
2. TIMKEN 23034EAW33 Spherical Roller Bearing: For Extreme Shock and Vibration
When heavy machinery operates under severe shock loads (e.g., rock crushers, hammer mills) or high radial loads with occasional axial thrust (e.g., steel mill rolling stands), the 23034EAW33 is the go-to choice. This model features a larger OD (260 mm) and width (67 mm) than the 22220EK, with a 170 mm ID—engineered for maximum stability:
- Dynamic Load Rating: 620 kN (radial), 230 kN (axial)
- Static Load Rating: 980 kN (radial), 360 kN (axial)
- Key Feature: The “W33” suffix denotes a lubrication groove and three oil holes in the outer ring, ensuring consistent grease or oil flow even in sealed, hard-to-reach locations. The “EA” design adds a brass cage for enhanced strength, preventing roller skew under shock.
A leading steel manufacturer in the U.S. replaced its existing bearings with the 23034EAW33 in a hot rolling mill and saw unplanned downtime drop by 50%—a result of the bearing’s ability to withstand the extreme heat (up to 120°C) and shock of red-hot steel passing through rollers.
3. TIMKEN 24138EMW33 Spherical Roller Bearing: For High-Speed Heavy Duty
Some heavy-duty applications require both load capacity and high rotational speed—e.g., large industrial fans (used in power plants) or centrifugal separators (in chemical processing). The 24138EMW33 is designed for this niche, with a double-row roller configuration and optimized raceway geometry:
- Dynamic Load Rating: 780 kN (radial), 320 kN (axial)
- Static Load Rating: 1,250 kN (radial), 500 kN (axial)
- Key Advantage: The “EM” suffix indicates an optimized internal design for smoother rolling at high speeds (up to 2,800 RPM), while the W33 lubrication system ensures minimal heat buildup. Its 190 mm ID, 320 mm OD, and 128 mm width make it suitable for large-diameter shafts in high-power equipment.
A European power plant reported that the 24138EMW33 extended the service life of its boiler induced draft fans from 12 months to 24 months—cutting maintenance costs and reducing the risk of unplanned shutdowns during peak energy demand.
As experienced professionals in the bearing industry for many years, we have always been committed to providing our customers with the highest quality products and the most satisfactory services. Through collaborations with top brands such as SKF, TIMKEN, FAG, THK, and others, we have not only established a wide range of product lines but also accumulated rich industry experience and technical knowledge. For more information, please mail to crystal@wsbearing.com.