22318MB/W33C3
MB Series Spherical Roller Bearings feature a symmetrical barrel roller design combined with a solid brass cage, delivering exceptional load capacity, strength, and alignment compensation. Engineered for superior durability and thermal stability, these bearings ensure reliable performance under heavy loads, shock, and harsh operating conditions. They are ideal for demanding industrial applications such as mining, metallurgy, construction, and heavy machinery, where high strength, long service life, and consistent efficiency are critical.
MB one-piece machined brass cage provides high rigidity, stable roller guidance, and excellent impact resistance
C3 internal clearance accommodates thermal expansion and ensures reliable operation under load
W33 lubrication groove and oil holes improve grease circulation and cooling efficiency
High radial and axial load capacity with self-aligning capability
Suitable for continuous operation in demanding industrial environments
- Dimensions
Bore diameter 90 mm Outside diameter 190 mm Width 64 mm - Performance
Basic dynamic load rating 365 kN Basic static load rating 542 kN Grease Reference speed 1700 r/min Oil Limiting speed 2200 r/min - Properties
Bore type Cylindrical For Load Direction Radial Number of rows Double row Radial internal clearance C3 Tolerance class for dimensions Nomal Tolerance class for run-out P6 Seal type Without Lubricant None Relubrication feature Without - Weight and Material
Product net weight 8.8 kg Roller material Chrome steel Ring Material Chrome steel Cage Brass
The JRZC 22318MB/W33C3 spherical roller bearing is designed for heavy-load industrial applications that require reliable performance, self-aligning capability, and long-term operational stability. This bearing features an MB one-piece machined brass cage, ensuring high mechanical strength, precise roller guidance, and excellent resistance to vibration and shock loads.
The C3 internal clearance allows for moderate thermal expansion, making the bearing suitable for applications involving elevated temperatures or tighter shaft fits. The W33 lubrication groove and oil holes enhance lubricant distribution, improving heat dissipation and reducing wear during continuous operation. The 22318MB/W33C3 bearing is widely used in mining equipment, conveyors, crushers, gearboxes, and other heavy-duty industrial machinery.
FAQ
Q1: What is the benefit of C3 internal clearance in this bearing?
A1: C3 clearance provides additional internal space to compensate for thermal expansion and mounting conditions, helping maintain stable performance under higher operating temperatures.
Q2: Why is the MB brass cage preferred for heavy-duty applications?
A2: The MB machined brass cage offers superior strength, precise roller guidance, and enhanced resistance to shock and vibration compared to pressed steel cages.
Q3: What is the function of the W33 lubrication groove?
A3: The W33 groove and oil holes allow better lubricant distribution, improved cooling, and reduced friction, extending the bearing’s service life.
Q4: Typical applications of the 22318MB/W33C3 bearing?
A4: It is commonly used in mining machinery, conveyors, crushers, industrial gearboxes, and other heavy-load equipment.
