ABMA 19.1:2011 pdf free

ABMA 19.1:2011 pdf free.Tapered Roller Bearings – Radial Metric Design
In order to ensure that tapered roller bearing chamfers are compatible with the dimensions of parts which come into contact with the rolling bearings, values of the chamfer dimension limits, of which the minimum limit is of primary interest to the bearing user and application designer, are required.
The bearings covered in the Boundary Dimension Tables (2-5) are a combination of those in common use, bearings from ISO 355, and bearings to meet anticipated future needs. The tables are designed to minimize the number of metric design tapered roller bearings, yet satisfy present and future needs of bearing users. These tables do not contain any indication as to availability of bearings.
Bearing mounting designs must afford adequate clearance for the cage. It should be noted that often the small end of the cage extends beyond the faces of the inner and outer ring.
The following table shows the types of tapered roller bearing assemblies which appear in the Boundary Dimension Tables, with a brief description and a typical ilustration of each type. Other types of single row, two row, and four row tapered roller bearing assemblies, with or without spacers, are available. Individual bearing manufacturers should be consulted for further details.
Type 2TS bearing assemblies included in the boundary dimension tables of this standard are shown with spacers. Type TDO bearing assemblies included in this standard can be furnished by the manufacturer with inner ring spacers. Spacers are made of both hardened and unhardened steel of numerous configurations. Consult individual manufacturers for availability. When these types of bearings are ftted with spacers, they are furnished as pre- set assemblies in which the spacers have been finished to size to establish a pre-determined axial clearance within each bearing assembly. Therefore component parts from one assembly are not interchangeable with similar assemblies even if made by the same manufacturer. Because spacer assemblies are pre-set by the manufacturer, spacers are generally not sold separately.ABMA 19.1 pdf free download.