DGBB-Inspection

The Dimension Inspection of Deep Groove Ball Bearings

 

In accordance with the requirements of the standard GB/T 307.1-2005 Rolling bearing-Radial bearing-Tolerances,  the redial bearings (Cylindrical Bore) should be strictly control the Three Tolerance Parameter:

Δdmp – Dimension,  Vdp-Ellipse,  Vdmp-Cylindricity for the bore (inner diameter).

     dmp (Cylindrical Bore) Mean bore diameter; arithmetical mean of the largest and smallest single bore diameters in one plane.

(Tapered Bore)Mean diameter at the small end of a tapered bore; arithmetical mean of the largest and smallest single diameters

Δdmp Deviation of the mean bore diameter from the nominal (Ddmp = dmp – d)

Vdp Bore diameter variation; difference between the largest and smallest single bore diameters in one plane

Vdmp Mean bore diameter variation; difference between the largest and smallest mean bore diameters.  

   The outside diameter is the same requirements as the inner diameter.    

 About the width, the below two tolerances must be check Both our ring and inner ring).    
 DBs, DCs Deviation of a single inner ring width or single outer ring width from the nominal.  
 VBs, VCs Ring width variation; difference between the largest and smallest single widths of an inner ring and outer ring, respectively.