ISO/TC 4/SC 9 - Tapered roller bearings

This document specifies bearing and subunit boundary dimensions for complete single-row and double-row tapered roller bearings. It also specifies the flange dimensions of flanged outer rings for a selection of these bearings. A series designation for each bearing is also specified.

ISO 10317:2008 establishes a system for the designation of metric size tapered roller bearings produced in accordance with ISO 355. The system covers designations for single-row bearings, double-row bearings, and bearings with flanged outer rings. ISO 10317:2008 also establishes designations for separate inner subunits (inner ring, tapered rollers and cage) and outer rings of such bearings. ISO 10317:2008 does not apply to bearings or inner subunits or outer rings which in any respect deviate from ISO 355.

ISO 355:2007 specifies bearing and subunit boundary dimensions for complete single-row and double-row tapered roller bearings. It also specifies the flange dimensions of flanged outer rings for a selection of these bearings. A series designation for each bearing is also specified.

Specifies the designation structure which includes: the sub-unit prefix, the bearing designator, and the designations of: dimension series, bore size, design variant and tolerance class.

Applies to bearing and sub-unit boundary dimensions for single-row metric tapered roller. It also specifies a series designation for each bearing. Tolerances are given in separate ISO publications. For front face corners no dimensions are given, however, they should not be sharp.