precision
The precision of rolling bearing is divided into dimensional precision and rotational precision.The specification of the precision is according to GB/T18254 GB/ t3073-96.The rolling bearings manufactured by yuyuan bearing manufacturing co., LTD are in GB/T18254, GB/t307-96 and JB/t8921-99 standards.Precision specification table used in
The code is as follows:
(1) size (5) rotation accuracy
D: nominal bearing bore Kia(Ki) : radial oscillating pendulum of the inner ring
D: nominal bearing inner diameter Sia (Si): axial pendulum of the inner ring
B: nominal inner ring width Sd(Sdi): lateral oscillation of the inner ring
C: nominal outer ring width Kea(Ke): radial oscillation pendulum of the outer ring
R: chamfer size of inner or outer ring Sea(Se): axial pendulum of outer ring
SD(SD) : verticality Seal of outer diameter surface: axial vibration pendulum on the back of flange disk surface
(2) size deviation
The size of the Δ ds: inner diameter deviation
Δ DMP: plane size deviation of average diameter
(Δ dm) : the size of the average diameter deviation
Δ Ds: outer diameter size deviation
Δ Dmp: plane dimensional deviation of average diameter
(Δ Dmp) : the size of the average outside diameter deviation
Δ Bs: the size of the inner ring width deviation or the size of the central ring height deviation
Δ Cs: the size of the outer ring width deviation
Δ Dis: measured the size of the flange diameter deviation
Δ Dis: measured the size of the flange width deviation
(3) chamfering
Rs min: minimum allowable chamfering size for inner and outer rings
Rs Max: minimum allowable chamfer size for inner and outer rings
(4) size variation
Vdp: inside diameter variation in plane
Vdmp: average diameter variation in a plane
VDp: inside and outside diameter variation
VDmp: mean diameter variation in the plane
VBs: inner ring width variation
VCs: outer ring width changes
VCis: flange width variation
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