TIMKEN Matched single row tapered roller bearing 31307DF

Timken metric tapered roller bearing matched assemblies consist of two single-row bearings (type TS) with individually matched spacers that are set at the factory to pre-determined dimensions and tolerances. The standard outer ring spacer is designed with lubrication holes to allow for lubricant flow into both bearing rows.
Matched bearing assemblies are supplied ready-to-fit into customer applications, with a unique serial number marked on spacers and bearing components for easy identification.

Timken can supply standard matched bearing assemblies in both the direct (DF) and indirect (DB) mounting arrangements to meet the application needs. Both types can accommodate axial loads in both directions.

Direct mounting “DF” (face-to-face)
This arrangement consists of:

• Two single-row bearings, with abutting back-facing inner-rings
• An outer-ring spacer with lubricating holes

Indirect mounting “DB” (back-to-back)
This arrangement consists of:

• Two single-row bearings
• An outer-ring spacer with lubricating holes
• A solid inner-ring spacer