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.
KMB reinforced brass cage provides exceptional strength, rigidity, and impact resistance
Tapered bore (K) supports precise shaft mounting and improved stability under heavy loads
C3 clearance enhances heat tolerance and ensures smooth operation in high-temperature environments
W33 lubrication groove enhances cooling, lubrication efficiency, and overall service life
Ideal for mining, steel mills, cement plants, paper machinery, and heavy industrial gear systems
| Bore diameter | 280 mm |
| Outside diameter | 580 mm |
| Width | 175 mm |
| Basic dynamic load rating | 2420 kN |
| Basic static load rating | 4650 kN |
| Grease Reference speed | 450 r/min |
| Oil Limiting speed | 560 r/min |
| Bore type | Tapered 1:12 |
| 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 |
| Product net weight | 238 kg |
| Roller material | Chrome steel |
| Ring Material | Chrome steel |
| Cage | Brass |
The JRZC 22356KMB/W33C3 spherical roller bearing is engineered for extremely heavy-duty industrial applications that require high radial load capacity, strong axial performance, and reliable operation under shock, impact, and variable load conditions. Featuring a KMB reinforced brass cage and a tapered bore design, this model ensures excellent stability, precise shaft mounting, and improved rigidity. The C3 internal clearance enhances heat tolerance and compensates for thermal expansion, while the W33 lubrication groove significantly improves grease distribution and cooling efficiency. It is widely applied in mining equipment, metallurgical machinery, cement mills, paper mills, and large gear-driven systems requiring long-term stable performance.
Q1: Why is the C3 internal clearance suitable for this bearing?
A1: C3 provides additional internal space, ensuring stable operation under high temperature and heavy-load conditions.
Q2: What are the advantages of the KMB brass cage?
A2: The KMB cage offers superior strength, excellent impact resistance, and high durability for harsh industrial environments.
Q3: Does the W33 lubrication groove improve service life?
A3: Yes, it ensures better lubrication flow, reduces heat buildup, and significantly extends operating life.
Q4: What industries commonly use the 22356KMB/W33C3 bearing?
A4: It is widely used in mining, metallurgy, cement production, paper processing, and heavy-duty industrial machinery.