This Standard specifies the boundary dimensions and preferred dimensions to be
used for drawn cup needle roller bearings without inner ring as well as the minimum
chamfer dimension limits. Also specified are the closed end thickness dimensions for
bearings with closed end drawn cups.
In addition, dimensional tolerances and methods for checking the needle roller com-
plement bore diameter are specified.
NOTE1 This Standard specifies the boundary dimensions and tolerances of
needle roller bearings intending to ensure compatibility and not in-
tending to perform conformity assessment in accordance with this
Standard.
2 The International Standard corresponding to this Standard is as fol~
lOWS.
ISO 3245:2007 Rolling bearings--Needle roller bearings, drawn cup
without inner ring--Boundary dimensions and tolerances (IDT)
In addition, symbols which denote the degree of correspondence in
the contents between the relevant International Standard and JIS are
IDT (identical), MOD (modified), and NEQ (not equivalent) according
to ISO/IEC Guide 21.