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four-row spherical roller bearing
Main applications
Heavy industry: rolling mills, continuous casting machines
Mining machinery: crushers, vibrating screens
Papermaking equipment: drying cylinders, calendering rollers
Textile machinery: spinning machines, looms
Reducers and gearboxes: high-load transmission systems
Ship propulsion: propeller shaft support
Core advantages
✅ Automatic self-aligning – adapt to shaft deflection and reduce friction and wear
✅ High load capacity – four-row roller design, withstands extremely heavy loads
✅ Anti-vibration and shock – suitable for harsh working conditions
✅ Long life – optimize roller contact stress and improve durability
✅ Multiple configurations available – different lubrication, sealing and material solutions
🔩 Structure and features
The four-row spherical roller bearing consists of an outer ring, an inner ring, a cage and rollers. The outer ring adopts a spherical raceway design, and its curvature center coincides with the bearing rotation center, giving the bearing an automatic self-aligning function, which can effectively compensate for the deflection caused by the installation deviation of the shaft and the bearing seat or the bending of the shaft.
📈 Model and specification
The model of the four-row spherical roller bearing usually includes the following elements:
Basic model: such as 22300, 23000 and other series.
Inner ring design identification: for example, C (no rib structure, with stamped cage), CA (with double-sided ribs, with solid cage).
Outer ring feature identification: such as W33 (outer ring with oil groove and three oil holes).
Accuracy and clearance code: P6 (accuracy grade), C3 (radial clearance range).
Temperature resistance grade: S1 (resistant to high temperature of 200°C), S2 (resistant to high temperature of 250°C).
The selection needs to be considered comprehensively in combination with the equipment working conditions and technical parameters.
Common brands
SKF Spherical Roller Bearing four-row
NSK four-row spherical roller bearing
FAG four-row spherical roller bearing
KOYO four-row spherical roller bearing
NTN four-row spherical roller bearing
TIMKEN four-row spherical roller bearing
NACHI four-row spherical roller bearing
INA four-row spherical roller bearing
🏗️ Application areas
This bearing is widely used in the following scenarios due to its high load-bearing and self-aligning capabilities:
Metallurgical equipment: heavy equipment such as rolling mills and continuous casting machines.
Mining machinery: harsh environments such as crushing equipment, screening machines and conveying systems.
Papermaking industry: high-temperature, high-speed and heavy-loaded parts such as drying cylinders and calender rollers.
Textile machinery: fiber processing equipment such as spinning machines and looms.
Power transmission: gearboxes, crane reduction devices, etc.
Fluid machinery: rotating systems such as centrifugal fans and compressors.
Agricultural machinery: field equipment such as tillers and harvesters.
Marine engineering: axial load support parts such as propeller shafting.
❔ FAQ
Q1: What are the typical application conditions for this type of bearing?
A1: Suitable for occasions with heavy loads, vibrations or poor shaft alignment, such as mining equipment, metallurgical rolling mills, etc.
Q2: What factors should be considered for selection?
A2: Parameters such as load characteristics, speed range, temperature rise limit and installation space need to be comprehensively evaluated.
Q3: What lubrication solutions are recommended?
A3: Grease lubrication or circulating oil lubrication can be selected according to the working conditions, and special lubricants are required for high temperature environments.
Q4: How to improve bearing durability?
A4: The focus includes regular replenishment of lubricants, prevention of contaminants, monitoring of operating loads, and timely replacement of failed parts.
Please see the Rodamiento de rodillos a rótula Catalog for more information!