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Zhejiang waxing electromechanical co.LTD.,Factory located in Shandong,Headquarters located in Zhejiang,China.
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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