ABMA 3096:2014 pdf free
ABMA 3096:2014 pdf free.Rolling bearings一Needle rollers一Dimensions and tolerances
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. All standards are subject to revision, and parties to agreements based on this International Standard are encouraged to investigate the possibility 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 unless specified otherwise.
nominal diameter of a needle roller, Dw: Diameter value used for the purpose of general identification of a needle roller diameter. See figures 1 and 2.
single diameter of a needle roller, Dws :Distance between two tangents to the needle roller surface parallel to each other and in a plane perpendicular to the needle roller axis, i.e. a radial plane.
mean diameter of a needle roller in a single plane, Dwmp: Arithmetical mean of the largest and the smallest actual single diameters of the needle roller in a single radial plane.
nominal length of a needle roller, Lw: Length value used for the purpose of general identification of a needle roller length. See figures 1 and 2.
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, VowL: Difference between the mean diameter Dwrmp 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.
