Field Meaning Description

01E 01: Series Enhanced Split Cylindrical Roller Bearing. Load capacity is approximately 30% higher than the basic 01 series. Sizes are interchangeable; existing housings can be used.

B: Inner ring with tapered locking sleeve. Quick clamping and positioning, strong anti-loosening, efficient installation/removal.

307 Imperial inner diameter 3-7/16″ (87.31 mm). Corresponds to metric 87.31 mm.

EX: Floating (Expansion) type. Outer ring without flanges, only bears radial loads, allows free axial movement of the shaft (maximum approximately 18.8 mm).

Structure and Core Features

Fully Split Structure: The inner ring, outer ring, rollers, and cage are all split in half, allowing for assembly and disassembly without disassembling the shaft or adjacent components, significantly reducing downtime and adapting to narrow/hard-to-access installation locations.

Increased Load Capacity: Compared to the basic 01 series, radial load capacity is increased by approximately 30%, and axial load capacity by approximately 20%, resulting in higher service life and safety margins.

Floating Design (EX): Adapts to the axial free movement of the shaft due to thermal expansion and contraction, avoiding additional stress and bearing only radial loads.

Tapered Locking Sleeve (B): Quick-locking positioning, excellent centering, efficient installation/disassembly, and strong anti-loosening capability.

Size Interchangeability: Can directly replace older 01 series bearings of the same specifications; no modifications to existing housings/cartridges are required.

Relubricated: Equipped with standard lubrication holes for convenient maintenance and extended service life.