DALUO Spherical roller bearings are a core category in the rolling bearing family, specifically designed to "handle complex working conditions". With their high load-carrying capacity and self-aligning function, they have become key transmission components in fields such as heavy machinery, metallurgy, mining, and papermaking. They are particularly suitable for scenarios where the shaft and bearing housing are misaligned during installation, or where impact loads or heavy loads exist.
Model System
Applicable Options
1. Prefix
- BS2-..: Prefix for bearings represented by drawing numbers
2. Basic Model
3. Suffix - Internal Design
- CA: Brass cage
- CC: Stamped steel cage
- E: Stamped steel cage
- E1: Stamped steel cage
4. Suffix - External Design (Sealing, Retaining Groove, etc.)
- -CS, -2CS: With nitrile rubber contact seals on one or both sides
- -RS, -2RS: With nitrile rubber contact seals on one or both sides
- K: Tapered bore, taper 1:12
- K30: Tapered bore, taper 1:30
5. Suffix - Cage Design
- F: Machined steel cage, inner ring guided
- FA: Machined steel cage, outer ring guided
- J: Stamped steel cage, inner ring guided
- JA: Stamped steel cage, outer ring guided
- MA: Machined brass cage, outer ring guided
6.1 Suffix - Precision, Clearance, Preload, Quiet Operation
- C2: Radial clearance smaller than that of the normal group
- C3: Radial clearance larger than that of the normal group
- C4: Radial clearance larger than C3
- C5: Radial clearance larger than C4
- P5: Dimensional tolerance and geometric tolerance (runout and orientation tolerance) meet grade P5
- P6: Dimensional tolerance and geometric tolerance (runout tolerance) meet grade P6
- P63: P6 + C3
6.2 (Suffix - Lubrication - Related)
- W64: Solid oil
- W: Outer ring without lubrication grooves and lubrication holes
- W20: Outer ring with three lubrication holes
- W26: Inner ring with six lubrication holes
- W33: Outer ring with annular lubrication groove and three lubrication holes in the groove
- W33X: Outer ring with annular lubrication groove and six lubrication holes in the groove
6.3 Suffix - Other Models
- R505: Special bearing for railway axle boxes
- VA405: Special bearing for vibrating machinery, with surface-hardened stamped steel cage
- VA944: Bearing suitable for food and beverage industry applications
- VA991: Bearing suitable for high-speed operation applications
- VA9B1: Bearing suitable for continuous casting machine applications
