ABMA 3096:1996 pdf free
ABMA 3096:1996 pdf free.Rolling bearings – Needle rollers – Dimensions and tolerances
This International Standard specifies dimensions and tolerances for finished steel needle rollers used as rlling elements:
The following standards contain provisions which, through reference in this text, constitute provisions of this International Standard. At the time of publication, the editions indicated were valid. AIlI standards are subject to revision, and parties to agreements based on this International Standard are encouraged to investigate the possbility of applying the most recent edition of the standard indicated below. Members of IEC and ISO maintain registers of currently valid International Standards.
ISO 286-2 :1988, ISo system of limits and fits一Part 2: Tables of standard tolerance grades and limit deviations for holes and shafts.
ISO 4291 :1985, Methods for the assessment of departure from roundness一Measurement of variations in radius.
For the purposes of this International Standard, the following terms and definitions apply. The symbols (except those for tolerances) shown in figures 1 and 2 and the values given in tables 1 and 3 denote nominal dimensions uniess specified otherwise.
circularity deviation: Difference between the largest radius and the smallest radius of the measured profile of the workpiece, the values of the radii being taken from the centre of the least squares mean circle, LSC.
needle roller gauge: Diameter deviation range limited by a high and a low deviation of the mean needle roller diameter Dwmp from the nominal diameter, Dw. in a radial plane through the middle of the roller length.
NOTE- A gauge is designated by the high and low deviation expressed in micrometres, for example -2 -4.
gauge lot: Quantity of needle rollers, of the same grade and nominal dimensions, all having a mean diameter Dwmp within the same gauge;
NOTE- Needle rollers of any grade and nominal dimensions are supplied in gauge lots. If nothing to the contrary has been agreed between the customer and the supplier, the gauge lots may be of any one or more of the gauges included in table 2.
variation of gauge lot diameter, VDwL: Difference between the mean diameter Dwmp of the needle roller having the largest mean diameter and that of the needle roller having the smallest mean diameter in the gauge lot.ABMA 3096 pdf free download.
